Evaluation of NOx emission inventories in California using multi-satellite data sets, AMAX-DOAS and in-situ airborne measurements, and regional model simulations during the CalNex field campaign
Abstract
Satellite NO2 column measurements indicate large NOx emissions from urban and agricultural sources in California. Comparison of regional model-simulated NO2 columns with satellite retrievals has proven useful in evaluating emission inventories for various sectors. We compare the NO2 columns from the WRF-Chem model with the multi-satellite data sets from different instruments and retrieval groups for a variety of California sources. Use of multiple satellite data sets help to define the uncertainties in the satellite retrievals. In addition, the CalNex 2010 intensive field campaign provides a unique opportunity to independently assess California's emission inventories. CU-AMAX-DOAS and in-situ airborne observations from CalNex 2010 and fine-resolution model simulations are used to estimate the accuracy of the satellite NO2 column retrievals over urban and agricultural areas. To understand differences in the retrievals, we will present sensitivity of satellite NO2 retrievals to a priori NO2 profiles that are produced from global models and the fine-resolution WRF-Chem model using state-of-the-art emission inventories.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.A43I..04K
- Keywords:
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- 0322 ATMOSPHERIC COMPOSITION AND STRUCTURE Constituent sources and sinks;
- 0345 ATMOSPHERIC COMPOSITION AND STRUCTURE Pollution: urban and regional;
- 0365 ATMOSPHERIC COMPOSITION AND STRUCTURE Troposphere: composition and chemistry;
- 0368 ATMOSPHERIC COMPOSITION AND STRUCTURE Troposphere: constituent transport and chemistry