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Application of satellite observations for timely updates to global anthropogenic NO x emission inventories
Author(s) -
Lamsal L. N.,
Martin R. V.,
Padmanabhan A.,
van Donkelaar A.,
Zhang Q.,
Sioris C. E.,
Chance K.,
Kurosu T. P.,
Newchurch M. J.
Publication year - 2011
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2010gl046476
Subject(s) - environmental science , satellite , remote sensing , meteorology , atmospheric sciences , physics , geology , astronomy
Anthropogenic emissions of nitrogen oxides (NO x ) can change rapidly due to economic growth or control measures. Bottom‐up emissions estimated using source‐specific emission factors and activity statistics require years to compile and can become quickly outdated. We present a method to use satellite observations of tropospheric NO 2 columns to estimate changes in NO x emissions. We use tropospheric NO 2 columns retrieved from the SCIAMACHY satellite instrument for 2003–2009, the response of tropospheric NO 2 columns to changes in NO x emissions determined from a global chemical transport model (GEOS‐Chem), and the bottom‐up anthropogenic NO x emissions for 2006 to hindcast and forecast the inventories. We evaluate our approach by comparing bottom‐up and hindcast emissions for 2003. The two inventories agree within 6.0% globally and within 8.9% at the regional scale with consistent trends in western Europe, North America, and East Asia. We go on to forecast emissions for 2009. During 2006–2009, anthropogenic NO x emissions over land increase by 9.2% globally and by 18.8% from East Asia. North American emissions decrease by 5.7%.