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IASI observations of seasonal and day-to-day variations of tropospheric ozone over three highly populated areas of China: Beijing, Shanghai, and Hong Kong

Dufour, G.; Eremenko, M.; Orphal, J.; Flaud, J.M.

Abstract:
IASI observations of tropospheric ozone over the Beijing, Shanghai and Hong Kong areas during one year (2008) have been analysed, demonstrating the capability of space-borne infrared nadir measurements to probe seasonal and even day-to-day variations of lower tropospheric ozone (0–6 km partial columns) on the regional scale of highly populated areas. The monthly variations of lower tropospheric ozone retrieved from IASI clearly show the influence of the Asian summer monsoon that brings clean air masses from the Pacific during summer. They exhibit indeed a sharp ozone maximum in late spring and early summer (May–June) followed by a summer minimum. The time periods and the intensities of the maxima and of the decreases are latitudedependent: they are more pronounced in Hong Kong and Shanghai than in Beijing. Moreover, IASI provides the opportunity to follow the spatial variations of ozone over the surroundings of each megacity as well as its daily variability. We show here that the large lower tropospheric ozone amounts (0–6 km partial columns) observed with IASI are mainly downwind the highest populated areas in each region, thus pos ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000039144
Veröffentlicht am 27.04.2018
Originalveröffentlichung
DOI: 10.5194/acp-10-3787-2010
Scopus
Zitationen: 61
Web of Science
Zitationen: 59
Seitenaufrufe: 170
seit 17.05.2018
Downloads: 86
seit 17.05.2018
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung (IMK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2010
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
urn:nbn:de:swb:90-391444
KITopen-ID: 1000039144
HGF-Programm 12.04 (POF II, LK 01)
Erschienen in Atmospheric chemistry and physics
Band 10
Seiten 3787-3801
Externe Relationen Abstract/Volltext
Nachgewiesen in Web of Science
Scopus
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