Spring to summer northward migration of high O3 over the western North Atlantic

被引：32

作者：

Choi, Yunsoo ^{[2
]}

Wang, Yuhang ^{[2
]}

Yang, Qing ^{[2
]}

Cunnold, Derek ^{[2
]}

Zeng, Tao ^{[2
]}

Shim, Changsub ^{[1
]}

Luo, Ming ^{[1
]}

Eldering, Annmarie ^{[1
]}

Bucsela, Eric ^{[3
]}

Gleason, James ^{[3
]}

机构：

[1] Jet Prop Lab, Pasadena, CA 91109 USA

[2] Georgia Inst Technol, Dept Earth & Atmospher Sci, Atlanta, GA 30332 USA

[3] NASA GSFC, Greenbelt, MD 20771 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 04期

关键词：

D O I：

10.1029/2007GL032276

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Tropospheric O-3 columns retrieved from OMI and MLS measurements, NO2 columns from OMI, and upper tropospheric O-3 concentrations from TES over North America and the western North Atlantic from April to August 2005 are analyzed using the Regional chEmical and trAnsport Model (REAM). Large enhancements of column and upper tropospheric O-3 over the western North Atlantic comparable to those over the eastern United States are found in the satellite measurements and REAM simulations. The O-3 enhancement region migrates northward from spring to summer. Model analysis indicates that the northward migration is driven by seasonal shifts of O-3 transported from the stratosphere and that produced through photochemistry from surface emissions and lightning NOx. As their uncertainties improve, satellite measurements of O-3 and its precursors will be able to provide more quantitative constraints on pollutant outflow from the continents.

引用

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