DOI: 10.1002/2015GL066293
论文题名: Tropical sources and sinks of carbonyl sulfide observed from space
作者: Glatthor N. ; Höpfner M. ; Baker I.T. ; Berry J. ; Campbell J.E. ; Kawa S.R. ; Krysztofiak G. ; Leyser A. ; Sinnhuber B.-M. ; Stiller G.P. ; Stinecipher J. ; Von Clarmann T.
刊名: Geophysical Research Letters
ISSN: 0094-8420
EISSN: 1944-8151
出版年: 2015
卷: 42, 期: 22 起始页码: 10082
结束页码: 10090
语种: 英语
英文关键词: tropical sources and sinks of COS
Scopus关键词: Budget control
; Carbon
; Carbon dioxide
; Michelson interferometers
; Vegetation
; Carbonyl sulfide
; Global distribution
; Maritime Continent
; Michelson interferometer for passive atmospheric soundings
; Parts per trillion
; Seasonal variation
; Tropical vegetation
; Upper troposphere
; Tropics
; biological uptake
; carbon cycle
; carbon dioxide
; carbonyl compound
; data set
; emission inventory
; MIPAS
; photosynthesis
; seasonality
; source-sink dynamics
; spacecraft
; sulfide
; tropical region
; troposphere
; vegetation cover
; Pacific Ocean
; Pacific Ocean (West)
; South America
; Southeast Asia
英文摘要: According to current budget estimations the seasonal variation of carbonyl sulfide (COS) is governed by oceanic release and vegetation uptake. Its assimilation by plants is assumed to be similar to the photosynthetic uptake of CO2 but, contrary to the latter process, to be irreversible. Therefore, COS has been suggested as cotracer of the carbon cycle. Observations of COS, however, are sparse, especially in tropical regions. We use the comprehensive data set of spaceborne measurements of the Michelson Interferometer for Passive Atmospheric Sounding to analyze its global distribution. Two major features are observed in the tropical upper troposphere around 250 hPa: enhanced amounts over the western Pacific and the Maritime Continent, peaking around 550 parts per trillion by volume (pptv) in boreal summer, and a seasonally varying depletion of COS extending from tropical South America to Africa. The large-scale COS depletion, which in austral summer amounts up to -40 pptv as compared to the rest of the respective latitude band, has not been observed before and reveals the seasonality of COS uptake through tropical vegetation. The observations can only be reproduced by global models, when a large vegetation uptake and a corresponding increase in oceanic emissions as proposed in several recent publications are assumed. Key Points First comprehensive global data set of upper tropospheric COS Detection of a tropical sink of COS Highest COS amounts above the Maritime Continent and the tropical western Pacific. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956911505&doi=10.1002%2f2015GL066293&partnerID=40&md5=30ae3eacbab8218759e91ddd4c64edc7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8036
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Karlsruher Institut für Technologie, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany
Recommended Citation:
Glatthor N.,Höpfner M.,Baker I.T.,et al. Tropical sources and sinks of carbonyl sulfide observed from space[J]. Geophysical Research Letters,2015-01-01,42(22).