Pinpointing nitrogen oxide emissions from space

被引：143

作者：

Beirle, Steffen ^{[1
]}

Borger, Christian ^{[1
]}

Doerner, Steffen ^{[1
]}

Li, Ang ^{[2
]}

Hu, Zhaokun ^{[2
]}

Liu, Fei ^{[3
,4
]}

Wang, Yang ^{[1
]}

Wagner, Thomas ^{[1
,5
]}

机构：

[1] Max Planck Inst Chem, Mainz, Germany

[2] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei, Anhui, Peoples R China

[3] Univ Space Res Assoc, GESTAR, Columbia, MD USA

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[5] Heidelberg Univ, Inst Environm Phys, Heidelberg, Germany

来源：

SCIENCE ADVANCES | 2019年 / 5卷 / 11期

关键词：

NOX EMISSIONS; POWER-PLANTS; AIR-QUALITY; RESOLUTION; LIFETIMES; CHINA;

D O I：

10.1126/sciadv.aax9800

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Satellite observations of nitrogen dioxide (NO2) provide valuable information on the location and strength of NOx emissions, but spatial resolution is limited by horizontal transport and smearing of temporal averages due to changing wind fields. In this study, we map NOx emissions on high spatial resolution from TROPOMI observations of NO2 combined with wind fields based on the continuity equation. The divergence of horizontal fluxes proves to be highly sensitive for point sources like exhaust stacks. Thus, NOx emissions from individual power plants can be resolved and quantified even on top of considerably high urban pollution from the Saudi Arabian capital city Riyadh. This allows us to catalog NOx emissions from large point sources globally, as demonstrated for South Africa and Germany, with a detection limit of about 0.11 kg/s down to 0.03 kg/s for ideal conditions.

引用

页数：6

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