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Scientific Objectives, measurement needs, and challenges motivating the PARAGON Aerosol Initiative

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dc.contributor.author Seinfeld, John H.
dc.contributor.author Kahn, Ralph A.
dc.contributor.author Anderson, Theodore L.
dc.contributor.author Charlson, Robert J.
dc.contributor.author Davies, Roger
dc.contributor.author Diner, David J.
dc.contributor.author Ogren, John A.
dc.contributor.author Schwartz, Stephen E.
dc.contributor.author Wielicki, Bruce A.
dc.date.accessioned 2008-08-21T22:36:28Z
dc.date.available 2008-08-21T22:36:28Z
dc.date.issued 2004-10
dc.identifier.citation Bulletin of the American Meteorological Society October 2004, DOI:10.1175/BAMS-85-10-1503 en_US
dc.identifier.clearanceno 04-1522
dc.identifier.uri http://hdl.handle.net/2014/40931
dc.description.abstract A systematic, comprehensive aerosol research framework needs to replace the current, fragmented approach. The Progressive Aerosol Retrieval and Assimilation Global Observing Network (PARAGON) concept (Diner et al. 2004) envisions a coordinated and systematic approach for dramatically improving our understanding of aerosol climate impacts and environmental interactions. Among its scientific motivations is the need to establish, with great confidence, the magnitude of direct anthropogenic aerosol influences on climate and the magnitude and sign of indirect aerosol–cloud effects. Modeling of the industrial era temperature record indicates that net aerosol forcing is slightly less, but opposite in sign, than forcing from anthropogenic greenhouse gases (GHGs). However, the uncertainties in aerosol direct and indirect anthropogenic forcing are of the same magnitude as the effects themselves (Penner et al. 2001; Ramaswamy et al. 2001), and are the dominant sources of uncertainty in current estimates of total anthropogenic climate forcing. A major cause of uncertainty is the tremendous tropospheric aerosol variability in space and time. On regional scales, aerosols can have a much greater effect than GHGs, especially at the earth’s surface. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher American Meteorological Society en_US
dc.subject anthropogenic en_US
dc.subject aerosols en_US
dc.subject cloud effects en_US
dc.subject Progressive Aerosol Retrieval and Assimilation Global Observing Network (PARAGON)
dc.title Scientific Objectives, measurement needs, and challenges motivating the PARAGON Aerosol Initiative en_US
dc.type Article en_US


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