DOI: 10.1002/2014GB004805
Scopus记录号: 2-s2.0-84910130016
论文题名: Global dry deposition of nitrogen dioxide and sulfur dioxide inferred from space-based measurements
作者: Nowlan C ; R ; , Martin R ; V ; , Philip S ; , Lamsal L ; N ; , Krotkov N ; A ; , Marais E ; A ; , Wang S ; , Zhang Q
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2014
卷: 28, 期: 10 起始页码: 1025
结束页码: 1043
语种: 英语
英文关键词: dry deposition
; nitrogen dioxide
; OMI
; sulfur dioxide
Scopus关键词: Aura (satellite)
; dry deposition
; EOS
; map
; nitrogen dioxide
; sulfur dioxide
; urban area
; China
; Guangdong
; Jinan [Shandong]
; Shandong
; Zhujiang Delta
英文摘要: A method is developed to estimate global NO2 and SO2 dry deposition fluxes at high spatial resolution (0.1°×0.1°) using satellite measurements from the Ozone Monitoring Instrument (OMI) on the Aura satellite, in combination with simulations from the Goddard Earth Observing System chemical transport model (GEOS-Chem). These global maps for 2005-2007 provide a data set for use in examining global and regional budgets of deposition. In order to properly assess SO2 on a global scale, a method is developed to account for the geospatial character of background offsets in retrieved satellite columns. Globally, annual dry deposition to land estimated from OMI as NO2 contributes 1.5 ± 0.5 Tg of nitrogen and as SO2 contributes 13.7 ± 4.0 Tg of sulfur. Differences between OMI-inferred NO2 dry deposition fluxes and those of other models and observations vary from excellent agreement to an order of magnitude difference, with OMI typically on the low end of estimates. SO2 dry deposition fluxes compare well with in situ Clear Air Status and Trends Network-inferred flux over North America (slope = 0.98, r = 0.71). The most significant NO2 dry deposition flux to land per area occurs in the Pearl River Delta, China, at 13.9 kg N ha-1 yr-1, while SO2 dry deposition has a global maximum rate of 72.0 kg S ha-1 yr-1 to the east of Jinan in China's Shandong province. Dry deposition fluxes are explored in several urban areas, where NO2 contributes on average 9-36% and as much as 85% of total NOy dry deposition. Key PointsNO2 and SO2 dry deposition is derived from space-based measurementsGlobal and regional budgets of dry deposition are determinedNO2 and SO2 deposition in urban areas is examined © 2014. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77516
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada; Atomic and Molecular Physics Division, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; School of Environment, Tsinghua University, Beijing, China; Center for Earth System Science, Tsinghua University, Beijing, China
Recommended Citation:
Nowlan C,R,, Martin R,et al. Global dry deposition of nitrogen dioxide and sulfur dioxide inferred from space-based measurements[J]. Global Biogeochemical Cycles,2014-01-01,28(10)