Observing U.S. urban NO x emissions from Ozone Monitoring Instrument (OMI) satellite retrievals Zifeng Lu, David G. Streets Decision and Information Sciences Division Argonne National Laboratory Presented at AQAST 6 Meeting Rice University, Houston, TX January 15-17, 2014
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Observing U.S. urban NO x emissions from Ozone Monitoring Instrument (OMI) satellite retrievals Zifeng Lu, David G. Streets Decision and Information Sciences.
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Observing U.S. urban NOx emissions from Ozone Monitoring Instrument (OMI) satellite retrievals
Zifeng Lu, David G. Streets
Decision and Information Sciences DivisionArgonne National Laboratory
Presented at AQAST 6 Meeting
Rice University, Houston, TXJanuary 15-17, 2014
Zifeng Lu, Observing US urban NOx emissions from OMI satellite retrievalsAQAST 6 Meeting, Rice University, Houston, TX, January 15, 2014
Introduction
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Our previous efforts on emissions estimation from satellite retrievals– Power plants in China
• NOx emissions Zhang et al., 2009; Wang et al., 2010; Wang et al., 2012
• SO2 emissions Li et al., 2010
– Power plants in India• NOx emissions Lu and Streets, 2012
• SO2 emissions Lu et al., 2013
– Power plants in US• NOx emissions Duncan et al., 2013
Good agreement between satellite observations and bottom-up emissions for areas dominated by power plant emissions
This work NOx emissions from US urban areas
Problem to be solved
Is it possible to use OMI NO2 retrievals to estimate the NOx emissions from US urban areas?
If so, how accurate are the estimates?
Zifeng Lu, Observing US urban NOx emissions from OMI satellite retrievalsAQAST 6 Meeting, Rice University, Houston, TX, January 15, 2014
OMI NO2 retrievals can be used to constrain the trends and estimate the amounts of NOx emissions from urban areas with reasonable accuracy
For a single urban area, the 95% CI of the estimated NOx emission is ±45% for the Berkeley retrievals and ±57% for the NASA retrievals
The total OMI NO2 burden over major US urban areas decreased by >30% from 2005 to 2013, in good agreement with decreases in bottom-up emissions and ground-based measurements