Anthropogenic influence on climate through changes in aerosol emissions from air pollution and land use change

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Acosta Navarro, Juan Camilo,1983-Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi (author)

Anthropogenic influence on climate through changes in aerosol emissions from air pollution and land use change

BookEnglish2017

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Stockholm :Department of Environmental Science and Analytical Chemistry, Stockholm University,2017
44 s.
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:su-137077
ISBN:9789176496503
ISBN:9789176496510
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-137077URI

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Language:English
Summary in:English

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Subject category:vet swepub-contenttype
Subject category:dok swepub-publicationtype

Notes

Particulate matter suspended in air (i.e. aerosol particles) exerts a substantial influence on the climate of our planet and is responsible for causing severe public health problems in many regions across the globe. Human activities have altered the natural and anthropogenic emissions of aerosol particles through direct emissions or indirectly by modifying natural sources. The climate effects of the latter have been largely overlooked. Humans have dramatically altered the land surface of the planet causing changes in natural aerosol emissions from vegetated areas. Regulation on anthropogenic and natural aerosol emissions have the potential to affect the climate on regional to global scales. Furthermore, the regional climate effects of aerosol particles could potentially be very different than the ones caused by other climate forcers (e.g. well mixed greenhouse gases). The main objective of this work was to investigate the climatic effects of land use and air pollution via aerosol changes.Using numerical model simulations it was found that land use changes in the past millennium have likely caused a positive radiative forcing via aerosol climate interactions. The forcing is an order of magnitude smaller and has an opposite sign than the radiative forcing caused by direct aerosol emissions changes from other human activities. The results also indicate that future reductions of fossil fuel aerosols via air quality regulations may lead to an additional warming of the planet by mid-21st century and could also cause an important Arctic amplification of the warming. In addition, the mean position of the intertropical convergence zone and the Asian monsoon appear to be sensitive to aerosol emission reductions from air quality regulations. For these reasons, climate mitigation policies should take into consideration aerosol air pollution, which has not received sufficient attention in the past.

Subject headings and genre

NATURVETENSKAP Geovetenskap och miljövetenskap Klimatforskning hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Climate Research hsv//eng
NATURVETENSKAP Geovetenskap och miljövetenskap Meteorologi och atmosfärforskning hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Meteorology and Atmospheric Sciences hsv//eng
NATURVETENSKAP Geovetenskap och miljövetenskap Miljövetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Environmental Sciences hsv//eng
NATURVETENSKAP Geovetenskap och miljövetenskap Oceanografi, hydrologi och vattenresurser hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Oceanography, Hydrology and Water Resources hsv//eng
Climate change
Air quality
Land use
General circulation
Atmosphere-Ocean interactions
Aerosol climate effects
Earth system modelling
Applied Environmental Science
tillämpad miljövetenskap

Added entries (persons, corporate bodies, meetings, titles ...)

Riipinen, Ilona,Associate professorStockholms universitet,Institutionen för miljövetenskap och analytisk kemi (thesis advisor)
Ekman, Annica M.L.ProfessorStockholms universitet,Meteorologiska institutionen (MISU) (thesis advisor)
Hansson, Hans-Christen,ProfessorStockholms universitet,Institutionen för miljövetenskap och analytisk kemi (thesis advisor)
Makkonen, Risto,PhDUniversity of Helsinki (opponent)
Stockholms universitetInstitutionen för miljövetenskap och analytisk kemi (creator_code:org_t)

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Climate Research

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Meteorology and ...

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Environmental Sc ...

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