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| Titel |
Chemistry and transport of pollution over the Gulf of Mexico and the Pacific: spring 2006 INTEX-B campaign overview and first results |
| VerfasserIn |
H. B. Singh, W. H. Brune, J. H. Crawford, F. Flocke, D. J. Jacob |
| 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 ; 9, no. 7 ; Nr. 9, no. 7 (2009-04-01), S.2301-2318 |
| Datensatznummer |
250007152
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| Publikation (Nr.) |
 copernicus.org/acp-9-2301-2009.pdf |
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| Zusammenfassung |
| Intercontinental Chemical Transport Experiment-B (INTEX-B) was a major NASA
(Acronyms are provided in Appendix A.) led multi-partner atmospheric field
campaign completed in the spring of 2006
(http://cloud1.arc.nasa.gov/intex-b/). Its major objectives
aimed at (i) investigating the extent and persistence of the outflow of
pollution from Mexico; (ii) understanding transport and evolution of Asian
pollution and implications for air quality and climate across western North
America; and (iii) validating space-borne observations of tropospheric
composition. INTEX-B was performed in two phases. In its first phase
(1–21 March), INTEX-B operated as part of the MILAGRO campaign with a focus
on observations over Mexico and the Gulf of Mexico. In the second phase
(17 April–15 May), the main INTEX-B focus was on trans-Pacific Asian
pollution transport. Multiple airborne platforms carrying state of the art
chemistry and radiation payloads were flown in concert with satellites and
ground stations during the two phases of INTEX-B. Validation of Aura
satellite instruments (TES, OMI, MLS, HIRDLS) was a key objective within
INTEX-B. Satellite products along with meteorological and 3-D chemical
transport model forecasts were integrated into the flight planning process to
allow targeted sampling of air parcels. Inter-comparisons were performed
among and between aircraft payloads to quantify the accuracy of data and to
create a unified data set. Pollution plumes were sampled over the Gulf of
Mexico and the Pacific several days after downwind transport from source
regions. Signatures of Asian pollution were routinely detected by INTEX-B
aircraft, providing a valuable data set on gas and aerosol composition to
test models and evaluate pathways of pollution transport and their impact on
air quality and climate. This overview provides details about campaign
implementation and a context within which the present and future
INTEX-B/MILAGRO publications can be understood. |
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