{"id":732,"date":"2016-03-31T18:45:13","date_gmt":"2016-03-31T18:45:13","guid":{"rendered":"http:\/\/newvista.cira.colostate.edu\/Improve\/?page_id=732"},"modified":"2026-02-19T20:14:30","modified_gmt":"2026-02-19T20:14:30","slug":"yosemite-aerosol-characterization-study","status":"publish","type":"page","link":"https:\/\/vista.cira.colostate.edu\/Improve\/yosemite-aerosol-characterization-study\/","title":{"rendered":"Yosemite Aerosol Characterization Study"},"content":{"rendered":"\n

Background<\/strong><\/p>\n\n\n\n

The Yosemite Aerosol Characterization Study (YACS) was an intensive field measurement campaign conducted by a number of U.S. research groups from 15 July to 4 September 2002 at Yosemite National Park (NP), California. The objectives of the study were to:<\/p>\n\n\n\n

1) Determine appropriate values for converting analyzed aerosol carbon mass to ambient aerosol organic carbon mass.<\/p>\n\n\n\n

2) Develop an improved understanding of the visibility-impairment-related characteristics of a smoke\/organic carbon-dominated aerosol, including the role of relative humidity in modifying visibility impairment.<\/p>\n\n\n\n

3) Examine the sources contributing to high aerosol organic carbon mass concentrations.<\/p>\n\n\n\n

Reports<\/h2>\n\n\n\n

Final Report: The Yosemite Aerosol Characterization Study of 2002<\/a><\/p>\n\n\n\n

Publications<\/h2>\n\n\n\n

Carrico, C.M., S.M. Kreidenweis, W.C. Malm, D.E. Day, T. Lee, J. Carrillo, G.R. McMeeking, and J.L. Collett Jr., Hygroscopic growth behavior of a carbon-dominated aerosol in Yosemite National Park, Atmos. Environ.<\/em>, 39<\/em>, 1393-1404, 2005.<\/p>\n\n\n\n

Engling, G., P. Herckes, S.M. Kreidenweis, W.C. Malm, and J.L. Collett Jr., Composition of the fine organic aerosol in Yosemite National Park during the 2002 Yosemite Aerosol Characterization Study, Atmos. Environ, <\/em>40, 2959-2972, 2006.<\/p>\n\n\n\n

Hand, J.L., W.C. Malm, D. Day, T. Lee, C. Carrico, J. Carrillo, J.L. Collett Jr., A. Laskin, C. Wang, J.P. Cowin, and M.J. Iedema, Optical, physical and chemical properties of tar balls observed during the Yosemite Aerosol Characterization Study, J. Geophys. Res.<\/em>, 110<\/em>, doi:10.1029\/204JD005728, 2005.<\/p>\n\n\n\n

Malm, W.C., D.E. Day, C.M. Carrico, S.M. Kreidenweis, J. J.L. Collett Jr., G. McMeeking, T. Lee, J. Carrillo, and B.A. Schichtel, Inter-comparison and closure calculations using measurements of aerosol species and optical properties during the Yosemite Aerosol Characterization Study, J. Geophys. Res.<\/em>, 110<\/em>, doi:10.1029\/2004JD005494, 2005.<\/p>\n\n\n\n

Malm, W.C., D.E. Day, S.M. Kreidenweis, J.L. Collett Jr., C.M. Carrico, G. McMeeking, and T. Lee, Hygroscopic growth properties of an organic-laden aerosol, Atmos. Environ.<\/em>, 39<\/em>, 4969-4982, 2005.<\/p>\n\n\n\n

McMeeking, G.R., S.M. Kreidenweis, C.M. Carrico, T. Lee, J.L. Collett Jr., and W.C. Malm, Observations of smoke influenced aerosol during the Yosemite Aerosol Characterization Study: Size distributions and chemical composition,J. Geophys. Res.<\/em>, 110<\/em>, doi:10.1029\/2004JD005389, 2005.<\/p>\n\n\n\n

McMeeking, G.R., S.M. Kreidenweis, C.M. Carrico, J.L. Collett Jr., D.E. Day, and W.C. Malm, Observations of smoke influenced aerosol during the Yosemite Aerosol Characterization Study: 2. Aerosol scattering and absorbing properties, J. Geophys. Res.<\/em>, 110<\/em>, doi:10.1029\/2004JD005624, 2005.<\/p>\n\n\n\n

McMeeking, G.R., S.M. Kreidenweis, M. Lunden, J. Carrillo, C.M., Carrico, T. Lee, P. Herckes, G. Engling, D.E. Day, J.L. Hand, N. Brown, W.C. Malm, and J.L. Collett Jr., Smoke-impacted regional haze in California during the summer of 2002. Agricultural and Forest Meteorology, <\/em>1-2<\/strong>,  25-42, 2006.<\/p>\n","protected":false},"excerpt":{"rendered":"

Background The Yosemite Aerosol Characterization Study (YACS) was an intensive field measurement campaign conducted by a number of U.S. research groups from 15 July to 4 September 2002 at Yosemite National Park (NP), California. The objectives of the study were to: 1) Determine appropriate values for converting analyzed aerosol carbon mass to ambient aerosol organic […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-732","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/comments?post=732"}],"version-history":[{"count":12,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/732\/revisions"}],"predecessor-version":[{"id":4841,"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/pages\/732\/revisions\/4841"}],"wp:attachment":[{"href":"https:\/\/vista.cira.colostate.edu\/Improve\/wp-json\/wp\/v2\/media?parent=732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}