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| Titel |
Overview of the 2010 Carbonaceous Aerosols and Radiative Effects Study (CARES) |
| VerfasserIn |
R. A. Zaveri, W. J. Shaw, D. J. Cziczo, B. Schmid, R. A. Ferrare, M. L. Alexander, M. Alexandrov, R. J. Alvarez, W. P. Arnott, D. B. Atkinson, S. Baidar, R. M. Banta, J. C. Barnard, J. Beranek, L. K. Berg, F. Brechtel, W. A. Brewer, J. F. Cahill, B. Cairns, C. D. Cappa, D. Chand, S. China, J. M. Comstock, M. K. Dubey, R. C. Easter, M. H. Erickson, J. D. Fast, C. Floerchinger, B. A. Flowers, E. Fortner, J. S. Gaffney, M. K. Gilles, K. Gorkowski, W. I. Gustafson, M. Gyawali, J. Hair, R. M. Hardesty, J. W. Harworth, S. Herndon, N. Hiranuma, C. Hostetler, J. M. Hubbe, J. T. Jayne, H. Jeong, B. T. Jobson, E. I. Kassianov, L. I. Kleinman, C. Kluzek, B. Knighton, K. R. Kolesar, C. Kuang, A. Kubátová, A. O. Langford, A. Laskin, N. Laulainen, R. D. Marchbanks, C. Mazzoleni, F. Mei, R. C. Moffet, D. Nelson, M. D. Obland, H. Oetjen, T. B. Onasch, I. Ortega, M. Ottaviani, M. Pekour, K. A. Prather, J. G. Radney, R. R. Rogers, S. P. Sandberg, A. Sedlacek, C. J. Senff, G. Senum, A. Setyan, J. E. Shilling, M. Shrivastava, C. Song, S. R. Springston, R. Subramanian, K. Suski, J. Tomlinson, R. Volkamer, H. W. Wallace, J. Wang, A. M. Weickmann, D. R. Worsnop, X.-Y. Yu, A. Zelenyuk, Q. Zhang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 16 ; Nr. 12, no. 16 (2012-08-22), S.7647-7687 |
| Datensatznummer |
250011409
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| Publikation (Nr.) |
 copernicus.org/acp-12-7647-2012.pdf |
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| Zusammenfassung |
| Substantial uncertainties still exist in the scientific understanding of the
possible interactions between urban and natural (biogenic) emissions in the
production and transformation of atmospheric aerosol and the resulting impact
on climate change. The US Department of Energy (DOE) Atmospheric Radiation
Measurement (ARM) program's Carbonaceous Aerosol and Radiative Effects Study
(CARES) carried out in June 2010 in Central Valley, California, was a
comprehensive effort designed to improve this understanding. The primary
objective of the field study was to investigate the evolution of secondary
organic and black carbon aerosols and their climate-related properties in the
Sacramento urban plume as it was routinely transported into the forested
Sierra Nevada foothills area. Urban aerosols and trace gases experienced
significant physical and chemical transformations as they mixed with the
reactive biogenic hydrocarbons emitted from the forest. Two
heavily-instrumented ground sites – one within the Sacramento urban area and
another about 40 km to the northeast in the foothills area – were set up to
characterize the evolution of meteorological variables, trace gases, aerosol
precursors, aerosol size, composition, and climate-related properties in
freshly polluted and "aged" urban air. On selected days, the DOE G-1
aircraft was deployed to make similar measurements upwind and across the
evolving Sacramento plume in the morning and again in the afternoon. The NASA
B-200 aircraft, carrying remote sensing instruments, was also deployed to
characterize the vertical and horizontal distribution of aerosols and aerosol
optical properties within and around the plume. This overview provides: (a)
the scientific background and motivation for the study, (b) the operational
and logistical information pertinent to the execution of the study, (c) an
overview of key observations and initial findings from the aircraft and
ground-based sampling platforms, and (d) a roadmap of planned data analyses
and focused modeling efforts that will facilitate the integration of new
knowledge into improved representations of key aerosol processes and
properties in climate models. |
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