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123-468: The SPM of the WG I report contains the following statements: Greenhouse gas concentrations have continued to increase; anthropogenic aerosols tend to produce negative radiative forcings; climate has changed over the past century (air temperature has increased by between 0.3 and 0.6 °C since the late 19th century; this estimate has not significantly changed since the 1990 report); The balance of evidence suggests

246-620: A cloud seed . More and more water accumulates on the seed until a visible cloud is formed. In the case of ship tracks, the cloud seeds are stretched over a long narrow path where the wind has blown the ship's exhaust, so the resulting clouds resemble long strings over the ocean. The warming caused by human-produced greenhouse gases has been somewhat offset by the cooling effect of human-produced aerosols. In 2020, regulations on fuel significantly cut sulfur dioxide emissions from international shipping by approximately 80%, leading to an unexpected global geoengineering termination shock. Aerosols in

369-717: A cloud seed . More and more water accumulates on the seed until a visible cloud is formed. In the case of ship tracks, the cloud seeds are stretched over a long narrow path where the wind has blown the ship's exhaust, so the resulting clouds resemble long strings over the ocean. The warming caused by human-produced greenhouse gases has been somewhat offset by the cooling effect of human-produced aerosols. In 2020, regulations on fuel significantly cut sulfur dioxide emissions from international shipping by approximately 80%, leading to an unexpected global geoengineering termination shock. The liquid or solid particles in an aerosol have diameters typically less than 1 μm . Larger particles with

492-409: A histogram with the area of each bar representing the proportion of particles in that size bin, usually normalised by dividing the number of particles in a bin by the width of the interval so that the area of each bar is proportionate to the number of particles in the size range that it represents. If the width of the bins tends to zero , the frequency function is: where Therefore, the area under

615-520: A temperate climate: its Köppen climate classification is Cfb . It is characterised by cool summers and cool winters with frequent cloudy and rainy periods. Average rainfall levels increase as the land rises: the 1958–1990 mean was 740 mm (29 in) on the seafront and about 1,000 mm (39 in) at the top of the South Downs above Brighton. Storms caused serious damage in 1703 , 1806, 1824, 1836, 1848, 1850, 1896, 1910 and 1987 . Heavy snow

738-643: A common Old English name associated with villages elsewhere in England. The tūn element is common in Sussex, especially on the coast, although it occurs infrequently in combination with a personal name. An alternative etymology taken from the Old English words for "stony valley" is sometimes given but has less acceptance. Brighthelm gives its name to, among other things, a church, a pub in Brighton, some halls of residence at

861-415: A discernible human influence on global climate (considerable progress since the 1990 report in distinguishing between natural and anthropogenic influences on climate, because of: including aerosols; coupled models; pattern-based studies). Climate is expected to continue to change in the future (increasing realism of simulations increases confidence ; important uncertainties remain but are taken into account in

984-455: A discernible human influence on global climate." An introductory preface to the SAR written by IPCC chairman Bolin and his co-chairs John T. Houghton and L. Gylvan Meira Filho highlighted "that observations suggest 'a discernible human influence on global climate', one of the key findings of this report, adds an important new dimension to discussion of the climate issue." Prior to the publication of

1107-559: A global scale." Other rebuttals of Seitz's comments include a 1997 paper by Paul Edwards and IPCC author Stephen Schneider , and a 2007 complaint to the UK broadcast regulator Ofcom about the television programme, " The Great Global Warming Swindle ". The 2007 complaint includes a rebuttal of Seitz's claims by the former IPCC chairman, Bert Bolin . One of the controversies of the Second Assessment Working Group III report

1230-548: A greater understanding (despite continuing uncertainties) that global warming continues and is most likely due to human activity, and that very substantial cuts in emissions would be required to stabilize greenhouse gas concentrations. Working Group II assessed whether the range of plausible impacts of global warming constitutes dangerous anthropogenic interference with the climate system, while Working Group III provided information to help countries "take decisions they believe are most appropriate for their specific circumstances". In

1353-472: A mix of businesses dominated by cafés, bars, theatres, and over 400 shops independent and avant-garde shops including an erotic shop and indoor flea markets. The Lanes which is characterised by a labyrinth of narrow alleyways form a retail, leisure and residential area near the seafront, following the street pattern of the original fishing village. The Lanes contain predominantly clothing stores, jewellers, antique shops, restaurants and pubs. Churchill Square

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1476-486: A pun on Smith's description, became popular when the Brighton trunk murders came to the public's attention in the 1930s. The mid-19th-century nickname "School Town" referred to the remarkable number of boarding, charity and church schools in the town at the time. The first settlement in the Brighton area was Whitehawk Camp , a Neolithic encampment on Whitehawk Hill which has been dated to between 3500 BC and 2700 BC. It

1599-414: A resident population of about 277,965 and the wider Brighton and Hove conurbation has a population of 474,485 (2011 census). Brighton's location has made it a popular destination for tourists, renowned for its diverse communities, shopping areas, large and vibrant cultural, music and arts scene, and its large LGBT population , leading to its recognition as the "unofficial gay capital of the UK" and as of

1722-506: A significant effect on Earth's climate: volcanic, desert dust, sea-salt, that originating from biogenic sources and human-made. Volcanic aerosol forms in the stratosphere after an eruption as droplets of sulfuric acid that can prevail for up to two years, and reflect sunlight, lowering temperature. Desert dust, mineral particles blown to high altitudes, absorb heat and may be responsible for inhibiting storm cloud formation. Human-made sulfate aerosols , primarily from burning oil and coal, affect

1845-506: A significant effect on Earth's climate: volcanic, desert dust, sea-salt, that originating from biogenic sources and human-made. Volcanic aerosol forms in the stratosphere after an eruption as droplets of sulfuric acid that can prevail for up to two years, and reflect sunlight, lowering temperature. Desert dust, mineral particles blown to high altitudes, absorb heat and may be responsible for inhibiting storm cloud formation. Human-made sulfate aerosols , primarily from burning oil and coal, affect

1968-429: A significant settling speed make the mixture a suspension , but the distinction is not clear. In everyday language, aerosol often refers to a dispensing system that delivers a consumer product from a spray can . Diseases can spread by means of small droplets in the breath , sometimes called bioaerosols . Aerosol is defined as a suspension system of solid or liquid particles in a gas. An aerosol includes both

2091-416: A volume of gas under study include diffusion , gravitational settling, and electric charges and other external forces that cause particle migration. A second set of processes internal to a given volume of gas include particle formation (nucleation), evaporation, chemical reaction, and coagulation. Brighton Brighton ( / ˈ b r aɪ t ən / BRY -tən ) is a seaside resort and one of

2214-786: A week after the Second Assessment Report was released, the Global Climate Coalition was echoed in a letter published in The Wall Street Journal from the retired condensed matter physicist and former president of the US National Academy of Sciences , Frederick Seitz , chair of the George C. Marshall Institute and Science and Environmental Policy Project , but not a climatologist. In this letter, Seitz alleged that Santer had perpetrated "a disturbing corruption of

2337-422: Is a shopping centre with a floor space of 470,000 sq ft (44,000 m ) and over 80 shops, several restaurants and 1,600 car-parking spaces. It was built in the 1960s as an open-air, multi-level pedestrianised shopping centre, but was rebuilt and enlarged in 1998 and is no longer open-air. Further retail areas include Western Road and London Road, the latter of which is undergoing extensive regeneration in

2460-458: Is evidence of an emerging pattern of climate response to forcings by greenhouse gases and sulphate aerosols in the observed climate record. Taken together, these results point towards a human influence on global climate." The final paragraph in the chapter stated "The body of statistical evidence in Chapter 8, when examined in the context of our physical understanding of the climate system, now points to

2583-655: Is more concentrated in some areas. The highest concentration is in the Whitehawk, Moulsecoomb, and Hollingbury areas but is also found around the St. James's Street and Eastern Road areas. A 2015 government statistic showed that the area around Brighton's Palace Pier roundabout and to the east towards St James's Street in Kemptown is the seventh-worst living environment in England. On 19 January 2017, Brighton council announced they were looking at certain initiatives to try to alleviate some of

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2706-505: Is one of six causewayed enclosures in Sussex. Archaeologists have only partially explored it, but have found numerous burial mounds , tools and bones, suggesting it was a place of some importance. There was also a Bronze Age settlement at Coldean . Brythonic Celts arrived in Britain in the 7th century BC, and an important Brythonic settlement existed at Hollingbury Castle on Hollingbury Hill. This Celtic Iron Age encampment dates from

2829-433: Is one of the largest such facilities in Brighton; in its early days about 6,000 people were employed, principally in industrial jobs, but in the late 20th and early 21st centuries its focus has switched to commercial and retail development, limiting Brighton's potential for industrial growth. Brighton Corporation laid out the estate on 18 acres (7.3 ha) of land around Crowhurst Road in 1950. By 1956, large-scale employment

2952-574: Is rare, but particularly severe falls were recorded in 1881 and 1967. At the time of the Domesday survey in 1086, Brighton was in the Rape of Lewes and the Hundred of Welesmere. The new Hundred of Whalesbone, which covered the parishes of Brighton, West Blatchington , Preston and Hove , was formed in 1296. Parishes moved in and out several times, and by 1801 only Brighton and West Blatchington were included in

3075-498: Is still not in commercial use: it houses some administrative departments of the University of Brighton . It was Brighton's first ultramodern commercial property and was intended for mixed commercial and industrial use, but its completion coincided with a slump in demand for high-tech premises. Brighton is well known for its high number of independent shops, which add to the character of the city. Walking from Brighton station towards

3198-408: Is still widely used, and "Old Ocean's Bauble". Novelist William Makepeace Thackeray referred to "Doctor Brighton", calling the town "one of the best of Physicians". "London-by-the-Sea" is well-known, reflecting Brighton's popularity with Londoners as a day-trip resort, a commuter dormitory and a desirable destination for those wanting to move out of the metropolis. "The Queen of Slaughtering Places",

3321-450: Is the economic valuation of human life, which is used in monetized (i.e., converted into US dollar values) estimates of climate change impacts . Often in these monetized estimates, the health risks of climate change are valued so that they are "consistent" with valuations of other health risks. There are a wide range of views on monetized estimates of climate change impacts. The strengths and weaknesses of monetized estimates are discussed in

3444-460: Is the largest area, has an estimated resident population of 277,965 residents. It is ranked the 59th most populous district in England. Compared to the national average, Brighton has fewer children and old residents but a large proportion of adults aged 20–44. Brighton has long had an LGBT-friendly history . In a 2014 estimate, 11–15 per cent of the city's population aged 16 or over is thought to be lesbian, gay or bisexual. The city also had

3567-511: The mass concentration ( M ), defined as the mass of particulate matter per unit volume, in units such as μg/m . Also commonly used is the number concentration ( N ), the number of particles per unit volume, in units such as number per m or number per cm . Particle size has a major influence on particle properties, and the aerosol particle radius or diameter ( d p ) is a key property used to characterise aerosols. Aerosols vary in their dispersity . A monodisperse aerosol, producible in

3690-529: The American Meteorological Society (AMS) and University Corporation for Atmospheric Research (UCAR). The presidents of the AMS and UCAR stated that there was a "systematic effort by some individuals to undermine and discredit the scientific process that has led many scientists working on understanding climate to conclude that there is a very real possibility that humans are modifying Earth's climate on

3813-626: The Georgian era , Brighton developed as a highly fashionable seaside resort, encouraged by the patronage of the Prince Regent, later King George IV , who spent much time in the town and constructed the Royal Pavilion in the Regency era . Brighton continued to grow as a major centre of tourism following the arrival of the railways in 1841, becoming a popular destination for day-trippers from London. Many of

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3936-454: The Royal Pavilion showing "quite a pool of water across the Steyne". Despite 16th-century writer Andrew Boorde 's claim that "Bryght-Hempston [is] among the noble ports and havens of the realm", Brighton never developed as a significant port: rather, it was considered as part of Shoreham . Nevertheless, the descriptions "Port of Brighthelmston" or "Port of Brighton" were sometimes used between

4059-535: The University of Sussex . Writing in 1950, historian Antony Dale noted that unnamed antiquaries had suggested an Old English word "brist" or "briz", meaning "divided", could have contributed the first part of the historic name Brighthelmstone. The town was originally split in half by the Wellesbourne , a winterbourne which was culverted and buried in the 18th century. Brighton has several nicknames. Poet Horace Smith called it "The Queen of Watering Places", which

4182-649: The Wellesbourne (or Whalesbone), which flowed from the South Downs above Patcham . This emptied into the English Channel at the beach near the East Cliff, forming "the natural drainage point for Brighton". Behind the estuary was a stagnant pond called the Pool or Poole, so named since the medieval era. This was built over with houses and shops from 1793, when the Wellesbourne was culverted to prevent flooding, and only

4305-688: The West Pier (1866), and the Palace Pier (1899). Prior to either of these structures, the famous Royal Suspension Chain Pier was built, to the designs of Captain Samuel Brown. It lasted from 1823 to 1896 and is featured in paintings by both Turner and Constable . Due to the boundary changes, the land area of Brighton expanded from 1,640 acres (7 km ) in 1854 to 14,347 acres (58 km ) in 1952. New housing estates were established in

4428-517: The power function distribution , occasionally applied to atmospheric aerosols; the exponential distribution , applied to powdered materials; and for cloud droplets, the Khrgian–Mazin distribution. For low values of the Reynolds number (<1), true for most aerosol motion, Stokes' law describes the force of resistance on a solid spherical particle in a fluid. However, Stokes' law is only valid when

4551-427: The skewness associated with a long tail of larger particles. Also for a quantity that varies over a large range, as many aerosol sizes do, the width of the distribution implies negative particles sizes, which is not physically realistic. However, the normal distribution can be suitable for some aerosols, such as test aerosols, certain pollen grains and spores . A more widely chosen log-normal distribution gives

4674-514: The terminal velocity of a particle undergoing gravitational settling in still air. Neglecting buoyancy effects, we find: where The terminal velocity can also be derived for other kinds of forces. If Stokes' law holds, then the resistance to motion is directly proportional to speed. The constant of proportionality is the mechanical mobility ( B ) of a particle: A particle traveling at any reasonable initial velocity approaches its terminal velocity exponentially with an e -folding time equal to

4797-533: The "value of statistical life") was viewed by some governments (such as India) as suggesting that people living in poor countries are worth less than people living in rich countries. David Pearce , who was a lead author of the relevant chapter of the SAR, officially dissented on the SPM. According to Pearce: The relevant chapter [of the Report] values of statistical life based on actual studies in different countries ... What

4920-410: The 14th and 19th centuries, as for example in 1766 when its notional limits were defined for customs purposes. The East Cliff runs for several miles from Pool Valley towards Rottingdean and Saltdean , reaching 24 m (80 ft) above sea level. The soil beneath it, a mixture of alluvium and clay with some flint and chalk rubble , has experienced erosion for many years. The cliff itself, like

5043-441: The 18th century. It is home to several major companies, some of which employ thousands of people locally; as a retail centre it is of regional importance; creative, digital and new media businesses are increasingly significant; and, although Brighton was never a major industrial centre, its railway works contributed to Britain's rail industry in the 19th and 20th centuries, particularly in the manufacture of steam locomotives. Since

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5166-487: The 1990s has been referred to as "Silicon Beach". By 2007, over 250 new media business had been founded in Brighton. Brandwatch is a social media monitoring company based in offices near Brighton station. Computer game design company Black Rock Studio was founded in 1998 and was taken over by Disney Interactive Studios , who closed it down in 2011. The Gamer Network, whose portfolio of websites relating to computer gaming (including Eurogamer ) and creative industries

5289-399: The 1990s, as Brighton regained the fashionable status it held in the 18th and 19th centuries. In 1997, the town of Brighton and its neighbouring town Hove were joined to form the unitary authority of Brighton and Hove , which was granted city status by Queen Elizabeth II as part of the millennium celebrations in 2000. As of 2017 , the Brighton and Hove district, of which Brighton

5412-487: The 1990s. Two large headquarters buildings were vacated in quick succession when British Bookshops left in March 2011 and The Argus newspaper moved out of its headquarters in 2012—although the Brighton & Hove Bus and Coach Company signed a contract to move its 1,250 employees into the latter building. Brighton has a high density of businesses involved in the media sector, particularly digital or " new media ", and since

5535-672: The 1st century AD, the Romans built a number of villas in Brighton and Romano-British Brythonic Celts formed farming settlements in the area. After the Romans left in the early 4th century AD, the Brighton area returned to the control of the native Celts. Anglo-Saxons then invaded in the late 5th century AD, and the region became part of the Kingdom of Sussex , founded in 477 AD by king Ælle . Anthony Seldon identified five phases of development in pre-20th century Brighton. The village of Bristelmestune

5658-485: The 20 μm range show a particularly long persistence time in air conditioned rooms due to their "jet rider" behaviour (move with air jets, gravitationally fall out in slowly moving air); as this aerosol size is most effectively adsorbed in the human nose, the primordial infection site in COVID-19 , such aerosols may contribute to the pandemic. Aerosol particles with an effective diameter smaller than 10 μm can enter

5781-508: The 2021 census, 10.7% of the population of Brighton and Hove over the age of 18 identify as gay, lesbian or bisexual, the highest percentage in the entire UK. Brighton has been called the UK's " hippest city" and "the happiest place to live in the UK". The earliest attestation of Brighton's name is Bristelmestune , recorded in the Domesday Book . Although more than 40 variations have been documented, Brighthelmstone (or Brighthelmston )

5904-431: The 3rd or 2nd century BC and is circumscribed by substantial earthwork outer walls with a diameter of c. 1,000 ft (300 m). Cissbury Ring , roughly 10 mi (16 km) from Hollingbury, is suggested to have been the tribal "capital". Later, there was a Roman villa at Preston Village , a Roman road from London ran nearby, and much physical evidence of Roman occupation has been discovered locally. From

6027-561: The Brighton Town Commissioners (of which he was a member). Brighton Corporation spent £40,000 to extend it in 1897–99 to the Classical design of Brighton Borough Surveyor Francis May. Despite this, the building was too small for municipal requirements by the mid-20th century, and extra council buildings were built in locations throughout Brighton Borough Council's existence: the most recent, Bartholomew House and Priory House next to

6150-451: The Earth's atmosphere can influence its climate, as well as human health. Volcanic eruptions release large amounts of sulphuric acid , hydrogen sulfide and hydrochloric acid into the atmosphere. These gases represent aerosols and eventually return to earth as acid rain , having a number of adverse effects on the environment and human life. When aerosols absorb pollutants, it facilitates

6273-475: The Hundred. In its original form, Brighton parish covered about 1,640 acres (660 ha) between the English Channel, Hove, Preston, Ovingdean and Rottingdean . The borough (but not the civil parish) was first extended from 31 October 1873, when 905 acres (366 ha) was annexed from Preston civil parish. In 1894 the part outside the borough became Preston Rural civil parish and Preston civil parish continued in

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6396-457: The IPCC process, a "convening lead author" for each chapter worked with other lead authors and contributing authors to agree the structure of the chapter, and assign teams of scientists to write each section of the chapter, producing a draft which was subject to acceptance by the whole author group. Participating governments then provided review comments on the draft, incorporated into the assessment which

6519-491: The Old Town (the present Lanes area) were well developed and the town grew quickly: the population rose from c. 1,500 in 1600 to c. 4,000 in the 1640s. By that time Brighton was Sussex's most populous and important town. Over the next few decades, though, events severely affected its local and national standing, such that by 1730 "it was a forlorn town decidedly down on its luck". More foreign attacks, storms (especially

6642-421: The Old Town developed, but it languished in the early modern period , affected by foreign attacks, storms, a suffering economy and a declining population. Brighton began to attract more visitors following improved road transport to London and becoming a boarding point for boats travelling to France . The town also developed in popularity as a health resort for sea bathing as a purported cure for illnesses. In

6765-527: The SAR and later IPCC assessments. In the preparation of the SAR, disagreement arose over the Working Group III Summary for Policymakers (SPM). The SPM is written by a group of IPCC authors, who then discuss the draft with government delegates from all of the UNFCCC Parties (i.e., delegates from most of the world's governments). The economic valuation of human life (referred to by economists as

6888-467: The Second Assessment Report, the industry group Global Climate Coalition distributed a report entitled "The IPCC: Institutionalized Scientific Cleansing" to reporters, US Congressmen, and scientists, which said that Santer had altered the text, after acceptance by the Working Group, and without approval of the authors, to strike content characterizing the uncertainty of the science. Three weeks later, and

7011-567: The UK's most "Godless" city. The largest religion is Christianity , with 43 per cent reporting an affiliation. The second-largest religion is Islam , with 2.2 per cent, which is lower than the national average. As part of the Jedi census phenomenon in 2001, 2.6 per cent claimed their religion was 'Jedi Knight', the largest percentage in the country. In December 2021, new data released by Shelter , revealed that "one in 78 people in Brighton and Hove are homeless". The report also records

7134-473: The acquired areas, including Moulsecoomb , Bevendean , Coldean and Whitehawk . The major expansion of 1928 also incorporated the villages of Patcham , Ovingdean and Rottingdean , and much council housing was built in parts of Woodingdean after the Second World War. By the 1970s, the town had acquired a reputation as a retirement destination, with an elderly population. However, this was reversed in

7257-406: The adjective "discernible" and this was agreed. The approved Summary for Policymakers includes a section headed "The balance of evidence suggests a discernible human influence on global climate", setting out progress in detection and attribution studies, cautioning that "Our ability to quantify the human influence on global climate is currently limited because the expected signal is still emerging from

7380-579: The amalgamation of Brighton and Hove, economic and retail data has been produced at a citywide level only. Examples of statistics include: Brighton and Hove's tourism industry contributes £380m to the economy and employs 20,000 people directly or indirectly; the city has 9,600 registered companies; and a 2001 report identified it as one of five "supercities for the future". In the past couple of years tourists to Brighton and Hove have fallen in numbers. Over 2016, day visitors to Brighton and Hove dropped by an average of 2,400 per day. In August 2017, new figures for

7503-416: The areas added to the borough became part of Brighton civil parish. From 1 April 1952, more of Falmer and part of the adjacent Stanmer parish were added; 20 years later, land and marine territory associated with the new Brighton Marina development also became part of Brighton. Except for a small addition of rural land in 1993 (from Pyecombe parish), Brighton Borough's boundaries remained the same until it

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7626-416: The authors of Chapter 6 did not accept, and still do not accept, was the call from a few [government] delegates for a common valuation based on the highest number for willingness to pay. In other words, a few government delegates wanted "statistical lives" in poor countries to be valued at the same level as "statistical lives" in rich countries. IPCC author Michael Grubb later commented: Many of us think that

7749-463: The beach at the bottom of the valley, which was partly protected from erosion by an underwater sandbar . Changes in sea level affected the foreshore several times: 40 acres (16 ha) disappeared in the first half of the 14th century, and the Great Storm of 1703 caused widespread destruction. The first sea defences were erected in 1723, and a century later a long sea wall was built. Brighton has

7872-451: The behavior of clouds. Although all hydrometeors , solid and liquid, can be described as aerosols, a distinction is commonly made between such dispersions (i.e. clouds) containing activated drops and crystals, and aerosol particles. The atmosphere of Earth contains aerosols of various types and concentrations, including quantities of: Aerosols can be found in urban ecosystems in various forms, for example: The presence of aerosols in

7995-431: The behavior of clouds. When aerosols absorb pollutants, it facilitates the deposition of pollutants to the surface of the earth as well as to bodies of water. This has the potential to be damaging to both the environment and human health. Ship tracks are clouds that form around the exhaust released by ships into the still ocean air. Water molecules collect around the tiny particles ( aerosols ) from exhaust to form

8118-493: The borough from Patcham parish in 1923 for the construction of the Moulsecoomb estate, and in 1928 the ward was divided into four: Hollingbury, Moulsecoomb, Preston and Preston Park. Elm Grove and Patcham wards were created at the same time, bringing the total to 19. There were further changes in 1952, 1955 and 1983, at which time there were 16 wards. This situation continued until 1 April 1997, when Hove and its wards became part of

8241-640: The borough. On 1 April 1889 Brighton became a county borough. On 1 October 1923, 94 acres (38 ha) were added to Brighton borough and to Preston civil parish from Patcham parish: Brighton Corporation was developing the Moulsecoomb estate there at the time. On 1 April 1928, Brighton civil parish was extended to include Preston civil parish. On the same date the borough grew by nearly five times by adding Ovingdean and Rottingdean parishes in their entirety and parts of Falmer , Patcham and West Blatchington; it also exchanged small parts with Hove municipal borough. All

8364-439: The bronchi, while the ones with an effective diameter smaller than 2.5 μm can enter as far as the gas exchange region in the lungs, which can be hazardous to human health. For a monodisperse aerosol, a single number—the particle diameter—suffices to describe the size of the particles. However, more complicated particle-size distributions describe the sizes of the particles in a polydisperse aerosol. This distribution defines

8487-651: The cause of protests since 2004. The premises were significantly damaged in January 2009 when protesters broke in. In 1985, the Borough Council described three "myths" about Brighton's economy. Common beliefs were that most of the working population commuted to London every day; that tourism provided most of Brighton's jobs and income; or that the borough's residents were "composed entirely of wealthy theatricals and retired business people" rather than workers. Brighton has been an important centre for commerce and employment since

8610-458: The charting of a future which allows for economic development which is sustainable. Working Group I, dealing with the scientific aspects of climate, stated that carbon dioxide remains the most important contributor to anthropogenic forcing of climate change; projections of future global mean temperature change and sea level rise confirm the potential for human activities to alter the Earth's climate to an extent unprecedented in human history; and

8733-460: The city as having the third highest rate of homelessness in England, with London claiming the top spot followed by Luton . In a previous charity report issued in November 2016, three areas in Brighton & Hove, East Brighton, Queen's Park, and Moulsecoomb & Bevendean ranked in the top ten per cent nationally for deprivation. Although deprivation in Brighton is distributed across the city, it

8856-630: The city of Brighton and Hove, of which 12 are in Brighton. Regency, St Peter's & North Laine, Preston Park, Withdean, Patcham, Hollingdean & Stanmer and Hanover & Elm Grove are part of the Brighton Pavilion constituency; Moulsecoomb & Bevendean, Queen's Park, East Brighton, Woodingdean and Rottingdean Coastal are covered by the Brighton Kemptown constituency. The newly created Borough of Brighton consisted of six wards in 1854: St Nicholas, St Peter, Pier, Park, Pavilion and West. When

8979-496: The deposition of pollutants to the surface of the earth as well as to bodies of water. This has the potential to be damaging to both the environment and human health. Aerosols interact with the Earth's energy budget in two ways, directly and indirectly. Ship tracks are clouds that form around the exhaust released by ships into the still ocean air. Water molecules collect around the tiny particles ( aerosols ) from exhaust to form

9102-406: The devastating Great Storm of 1703 ), a declining fishing industry, and the emergence of nearby Shoreham as a significant port caused its economy to suffer. By 1708 other parishes in Sussex were charged rates to alleviate poverty in Brighton, and Daniel Defoe wrote that the expected £8,000 cost of providing sea defences was "more than the whole town was worth". The population declined to 2,000 in

9225-444: The diameter of the spherical particle with a density of 1000 kg/m and the same settling velocity as the irregular particle. Neglecting the slip correction, the particle settles at the terminal velocity proportional to the square of the aerodynamic diameter, d a : where This equation gives the aerodynamic diameter: One can apply the aerodynamic diameter to particulate pollutants or to inhaled drugs to predict where in

9348-412: The early 18th century. From the 1730s, Brighton entered its second phase of development—one which brought a rapid improvement in its fortunes. The contemporary fad for drinking and bathing in seawater as a purported cure for illnesses was enthusiastically encouraged by Richard Russell from nearby Lewes . He sent many patients to "take the cure" in the sea at Brighton, published a popular treatise on

9471-409: The factual basis of the issue of climate change, gleaned from available expert literature and further carefully reviewed by experts and governments." The Synthesis Report gave its purpose as providing the scientific, technical and socio-economic information for determining what concentrations of greenhouse gases might be regarded as " dangerous anthropogenic interference with the climate system " and

9594-566: The first UK City to adopt the Homeless Bill of Rights . The bill was passed by 31 votes to 11, with 7 abstentions. Brighton lies between the South Downs and the English Channel to the north and south, respectively. The Sussex coast forms a wide, shallow bay between the headlands of Selsey Bill and Beachy Head ; Brighton developed near the centre of this bay around a seasonal river ,

9717-558: The frequency curve between two sizes a and b represents the total fraction of the particles in that size range: It can also be formulated in terms of the total number density N : Assuming spherical aerosol particles, the aerosol surface area per unit volume ( S ) is given by the second moment : And the third moment gives the total volume concentration ( V ) of the particles: The particle size distribution can be approximated. The normal distribution usually does not suitably describe particle size distributions in aerosols because of

9840-410: The governments were basically right. The metric [used by Pearce] makes sense for determining how a given government might make tradeoffs between its own internal projects. But the same logic fails when the issue is one of damage inflicted by some countries on others: why should the deaths inflicted by the big emitters—principally the industrialised countries—be valued differently according to the wealth of

9963-423: The highest percentage of same-sex households in the UK in 2004 and the largest number of civil partnership registrations outside London in 2013. Brighton is identified as one of the least religious places in the UK, based upon analysis of the 2011 census which revealed that 42 per cent of the population profess no religion , far higher than the national average of 25 per cent. Brighton has been described as

10086-511: The increasing homelessness seen on Brighton's streets and were hoping to open the first in-house temporary housing for homeless people in the city. Homelessness figures released by Crisis in December 2018 reported a record high in the UK, with figures in Sussex , including Brighton and Hove, reported as being "high". At a meeting of the full B&H Council on 25 March 2021, Brighton and Hove became

10209-403: The laboratory, contains particles of uniform size. Most aerosols, however, as polydisperse colloidal systems, exhibit a range of particle sizes. Liquid droplets are almost always nearly spherical, but scientists use an equivalent diameter to characterize the properties of various shapes of solid particles, some very irregular. The equivalent diameter is the diameter of a spherical particle with

10332-658: The long time-scales governing both the accumulation of greenhouse gases in the atmosphere and the response of the climate system to those accumulations, means that many important aspects of climate change are effectively irreversible. Working Group I subsequently characterized its reports in the First and Second Assessments as progressing from an understanding that the greenhouse effect is well understood, greenhouse gases are increasing (due largely to human activity), and therefore should lead to significant global warming (though lack of understanding limited specific regional predictions), to

10455-607: The major attractions were built in the Victorian era , including the Grand Hotel , the Hilton Brighton Metropole , the Palace Pier and the West Pier . The town continued to grow into the 20th century, expanding to incorporate more areas into the town's boundaries before joining Hove to form the unitary authority of Brighton and Hove in 1997, which was granted city status in 2000. Today, Brighton and Hove district has

10578-437: The mixture of particulates in air, and not to the particulate matter alone. Examples of natural aerosols are fog , mist or dust . Examples of human caused aerosols include particulate air pollutants , mist from the discharge at hydroelectric dams , irrigation mist, perfume from atomizers , smoke , dust , sprayed pesticides , and medical treatments for respiratory illnesses. Several types of atmospheric aerosol have

10701-425: The name of the road (Pool Valley, originally Pool Lane) marks its site. One original house survives from the time of the pool's enclosure. Behind Pool Valley is Old Steine (historically The Steyne ), originally a flat and marshy area where fishermen dried their nets. The Wellesbourne occasionally reappears during times of prolonged heavy rain; author Mark Antony Lower referred to an early 19th-century drawing of

10824-610: The new unitary authority of Brighton and Hove . Brighton Town Hall occupies a large site in the Lanes . Medieval Brighthelmston had a town hall, although it was called the Townhouse and functioned more like a market hall. A later building (1727) known as the Town Hall was principally used as a workhouse . Work on the first purpose-built town hall began in 1830; Thomas Read Kemp laid the first stone, and Thomas Cooper designed it on behalf of

10947-444: The noise of natural variability, and because there are uncertainties in key factors." Santer was subsequently required by the IPCC to bring the rest of the chapter into compliance with this wording. The summary at the start of the accepted version of the chapter stated that "these results indicate that the observed trend in global mean temperature over the past 100 years is unlikely to be entirely natural in origin. More importantly, there

11070-535: The number frequency as: where: The log-normal distribution has no negative values, can cover a wide range of values, and fits many observed size distributions reasonably well. Other distributions sometimes used to characterise particle size include: the Rosin-Rammler distribution , applied to coarsely dispersed dusts and sprays; the Nukiyama–Tanasawa distribution, for sprays of extremely broad size ranges;

11193-519: The particles and the suspending gas, which is usually air. Meteorologists and climatologists often refer to them as particle matter, while the classification in sizes ranges like PM2.5 or PM10, is useful in the field of atmospheric pollution as these size range play a role in ascertain the harmful effects in human health. Frederick G. Donnan presumably first used the term aerosol during World War I to describe an aero- solution , clouds of microscopic particles in air. This term developed analogously to

11316-413: The peer-review process." Seitz criticized the conclusions of Chapter 8, and wrote that "key changes were made after the scientists had met and accepted what they thought was the final peer-reviewed version", deleting "hints of the skepticism" he attributed to other unnamed scientists. The position of the lead author of Chapter 8, Benjamin D. Santer, was supported by fellow IPCC authors and senior figures of

11439-514: The plenary meeting in November. The Chapter 8 draft report put together on 5 October had an Executive Summary of the evidence, and after various qualifications, said "Taken together, these results point towards a human influence on climate." Governments at the November plenary meeting in Madrid demanded changes to how this was worded in the Summary for Policymakers, after extended discussions Bolin suggested

11562-471: The range of model projections). Finally, the report stated that there were still many uncertainties (estimates of future emissions and biogeochemical cycling; models; instrument data for model testing, assessment of variability, and detection studies). The Second Assessment Report, titled Climate Change 1995 , consists of reports from each of the three Working Groups, and a Synthesis Report: These reports were prepared by over two thousand experts, and "contain

11685-436: The relative amounts of particles, sorted according to size. One approach to defining the particle size distribution uses a list of the sizes of every particle in a sample. However, this approach proves tedious to ascertain in aerosols with millions of particles and awkward to use. Another approach splits the size range into intervals and finds the number (or proportion) of particles in each interval. These data can be presented in

11808-401: The relaxation time: where: To account for the effect of the shape of non-spherical particles, a correction factor known as the dynamic shape factor is applied to Stokes' law. It is defined as the ratio of the resistive force of the irregular particle to that of a spherical particle with the same volume and velocity: where: The aerodynamic diameter of an irregular particle is defined as

11931-461: The respiratory tract such particles deposit. Pharmaceutical companies typically use aerodynamic diameter, not geometric diameter, to characterize particles in inhalable drugs. The previous discussion focused on single aerosol particles. In contrast, aerosol dynamics explains the evolution of complete aerosol populations. The concentrations of particles will change over time as a result of many processes. External processes that move particles outside

12054-451: The rest of Brighton's soil, is chalk. Below this are thin layers of Upper and Lower Greensand separated by a thicker band of Gault clay . The land slopes upwards gradually from south to north towards the top of the Downs. Main transport links developed along the floor of the Wellesbourne valley, from which the land climbs steeply—particularly on the east side. The earliest settlement was by

12177-421: The same value of some physical property as the irregular particle. The equivalent volume diameter ( d e ) is defined as the diameter of a sphere of the same volume as that of the irregular particle. Also commonly used is the aerodynamic diameter ,  d a . People generate aerosols for various purposes, including: Some devices for generating aerosols are: Several types of atmospheric aerosol have

12300-562: The scientific topic areas, and discussion continued by email. At the first drafting session (in Sigtuna , Sweden, in October) Santer persuaded the others that the chapter should discuss observational and model uncertainties, though these were also covered in other chapters. The "zeroth" draft was then sent out for peer review to scientific topic experts, all the chapter authors and lead authors of other chapters. Their responses were incorporated in

12423-527: The seafront, first, is the North Laine area, stretching from Trafalgar Street, Kensington Gardens, Sydney Street, Gardner Street and Bond Street and is mostly pedestrianised. It is a retail, leisure and the residential area immediately north of the Lanes. Its name derives from the Anglo-Saxon "Laine" meaning "fields", although the misnomer "North Lanes" is often used to describe the area. The North Laine contains

12546-619: The seafront, the boundary runs up Little Western Street (pavement on eastern side, in Brighton), but it is not visible. Northwards from Western Road, it runs to the west of Norfolk Road, Norfolk Terrace, Windlesham Road and Windlesham Gardens in the Montpelier area, then along the south side of Davigdor Road to Seven Dials . From there it runs along the west side of Dyke Road as far as Withdean Road in Withdean , at which point it crosses Dyke Road so that

12669-487: The second drafting session in March 1995 at Brighton . In May the entire draft Working Group I report as well as the summary for policymakers was submitted for full "country review" by participating governments, to provide comments for incorporation at the third drafting session at Asheville, North Carolina , in July. Because of the delayed timing, Santer did not receive government comments for this meeting, some did not arrive until

12792-556: The section north of that is part of Hove parish. The boundary continues to follow Dyke Road towards Devil's Dyke on the South Downs. Brighton is covered by two constituencies in the Parliament of the United Kingdom : Brighton Kemptown and Peacehaven and Brighton Pavilion . In the 2024 general election , Brighton Kemptown elected Chris Ward , Labour ; Brighton Pavilion elected Siân Berry , Green Party . There are 21 wards in

12915-480: The subject, and moved to the town soon afterwards (the Royal Albion , one of Brighton's early hotels, occupies the site of his house). Others were already visiting the town for recreational purposes before Russell became famous, and his actions coincided with other developments which made Brighton more attractive to visitors. From the 1760s it was a boarding point for boats travelling to France; road transport to London

13038-625: The term hydrosol , a colloid system with water as the dispersed medium. Primary aerosols contain particles introduced directly into the gas; secondary aerosols form through gas-to-particle conversion. Key aerosol groups include sulfates, organic carbon, black carbon, nitrates, mineral dust, and sea salt, they usually clump together to form a complex mixture. Various types of aerosol, classified according to physical form and how they were generated, include dust, fume, mist, smoke and fog. There are several measures of aerosol concentration. Environmental science and environmental health often use

13161-407: The territory was extended to include part of Preston parish in 1873, the new area became a seventh ward named Preston. The seven were split into 14 in 1894: Hanover, Kemp Town (renamed King's Cliff in 1908), Lewes Road, Montpelier, Pavilion, Pier, Preston, Preston Park, Queen's Park, Regency, St John, St Nicholas, St Peter, and West. Preston ward was extended in 1923 to incorporate the area taken into

13284-538: The town hall, were finished in 1987. The town hall ceased to be responsible solely for Brighton's affairs when Brighton and Hove were united in 1997, but it is still used by Brighton & Hove City Council—particularly for weddings and civil partnerships. The presence of a British subsidiary of the United States arms company EDO Corporation on the Home Farm Industrial Estate in Moulsecoomb has been

13407-517: The two main areas of the city of Brighton and Hove in the county of East Sussex , England. It is located 47 miles (76 km) south of London . Archaeological evidence of settlement in the area dates back to the Bronze Age , Roman and Anglo-Saxon periods. The ancient settlement of "Brighthelmstone" was documented in the Domesday Book (1086). The town's importance grew in the Middle Ages as

13530-463: The velocity of the gas at the surface of the particle is zero. For small particles (< 1 μm) that characterize aerosols, however, this assumption fails. To account for this failure, one can introduce the Cunningham correction factor , always greater than 1. Including this factor, one finds the relation between the resisting force on a particle and its velocity: where This allows us to calculate

13653-525: The victims' countries? The Second Assessment Report consists of the following reports from each of the three Working Groups, and a Synthesis Report. The WG2 report has on-line text; all are available in PDF format at the IPCC's documents web page . Aerosol An aerosol is a suspension of fine solid particles or liquid droplets in air or another gas . Aerosols can be generated from natural or human causes . The term aerosol commonly refers to

13776-618: The year showed Brighton's tourism had fallen by a further 1 per cent on the previous year. Brighton's largest private sector employer is American Express , whose European headquarters are at John Street. As of 2012, about 3,000 people work there. Planning permission to demolish the old Amex offices and build a replacement was granted in 2009, and work started in March 2010. Other major employers include Lloyds Bank , Legal & General , Asda (which has hypermarkets at Hollingbury and Brighton Marina ), Brighton & Hove Bus and Coach Company and call-centre operator Inkfish. In 2012, it

13899-437: Was about 400. By the 14th century there was a parish church , a market and rudimentary law enforcement (the first town constable was elected in 1285). Sacked and burnt by French invaders in the early 16th century—the earliest depiction of Brighton, a painting of c. 1520, shows Admiral Pregent de Bidoux's attack of June 1514—the town recovered strongly based on a thriving mackerel -fishing industry. The grid of streets in

14022-407: Was founded by these Anglo-Saxon invaders, probably in the early Saxon period. They were attracted by the easy access for boats, sheltered areas of raised land for building and better conditions compared to the damp, cold and misty Weald to the north. By the time of the Domesday survey in 1086 it was a fishing and agricultural settlement, a rent of 4,000 herring was established, and its population

14145-534: Was founded in 1999, is based in Brighton. By the early 21st century, the market for office accommodation in the city was characterised by fluctuating demand and a lack of supply of high-quality buildings. As an example, the Trafalgar Place development ( c. 1990), "now considered a prime office location", stood partly empty for a decade. Exion 27 (built in 2001), a high-tech, energy-efficient office development at Hollingbury , remained empty for several years and

14268-428: Was further encouraged by the patronage of the Prince Regent (later King George IV ) after his first visit in 1783. He spent much of his leisure time in the town and constructed the Royal Pavilion during the early part of his Regency . In this period the modern form of the name Brighton came into common use. A permanent military presence was established in the city with the completion of Preston Barracks in 1793. It

14391-406: Was improved when the main road via Crawley was turnpiked in 1770; and spas and indoor baths were opened by other entrepreneurial physicians such as Sake Dean Mahomed and Anthony Relhan (who also wrote the town's first guidebook). From 1780, the development of the Georgian terraces had started, and the fishing village developed as the fashionable resort of Brighton. The growth of the town

14514-511: Was joined to Hove Borough in 1997 to form the unitary authority of Brighton and Hove. The old boundary between Brighton and Hove is most clearly seen on the seafront, where the King Edward Peace Statue (1912) straddles the border, and in a twitten called Boundary Passage which runs northwards from Western Road to Montpelier Road. There is a Grade II-listed parish boundary marker stone in this passageway. Between Western Road and

14637-505: Was presented to seek acceptance at a plenary session of the IPCC. The IPCC chairman Bert Bolin had difficulty finding a convening lead author for Chapter 8. After delays, Benjamin D. Santer who was doing postdoctoral research on the topic was persuaded to take on the task. Twenty participants from various countries met at the initial meeting in Livermore, California , in August 1994 to identify

14760-602: Was provided at a bakery, a typewriter factory and a machine tools manufacturer among others. Most of the large factories closed during the recessions of the 1980s and 1990s, employment fell to 1,000, and structural changes started in the mid-1980s with a move towards small-scale industrial units (the Enterprise Estate was finished in October 1985) and then retail warehouses. Asda 's superstore opened in November 1987, MFI followed two years later, and other retail units were built in

14883-452: Was rebuilt in 1830. The population increased rapidly throughout the 19th century from 7,339 in 1801 to 46,661 in 1841, and by 1901 the population had reached more than 120,000. The arrival of the London and Brighton Railway in 1841 brought Brighton within the reach of day-trippers from London. Many of the major attractions were built during the Victorian era , such as the Grand Hotel (1864),

15006-664: Was reported that about 1,500 of Gatwick Airport 's 21,000 workers lived in the city of Brighton and Hove. Brighton is a popular destination for conferences, exhibitions and trade fairs, and has had a purpose-built conference centre—the Brighton Centre —since 1977. Direct income from the Brighton Centre's 160 events per year is £8 million, and a further £50 million is generated indirectly by visitors spending money during their stay. Events range from political party conferences to concerts. The Hollingbury Industrial Estate

15129-438: Was the standard rendering between the 14th and 18th centuries. "Brighton" was originally an informal shortened form, first seen in 1660; it gradually supplanted the longer name and was in general use from the late 18th century, although Brighthelmstone remained the town's official name until 1810. The name is of Anglo-Saxon origin. Most scholars believe that it derives from Beorthelm + tūn —the homestead of Beorthelm ,

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