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SATELLITE TRACE GASSES M/M

Since AURA/OMI ozone profiles are not yet available for analysis, we focus on AURA/TES ozone data. The coincidences between AURA/TES ozone measurements (Global Survey mode) and ozonesondes are identified for Huntsville, AL during AURA/TES operating period. The algorithm can be applied to other ozonesonde stations or other kinds of ozonesonde measurements (i.e., MOZAIC ozone, Dobson and Brewer measurements), to identify coincidence pairs for AURA/TES validation purpose. Ozonesonde profiles are convolved with AURA/TES operator (averaging kernel and a priori constraint vector) to account for AURA/TES measurement sensitivity and vertical resolution. The resulting AURA/TES – sonde difference can be used to assess systematic errors in the AURA/TES calibration and retrieval process. Monthly mean ozone is obtained for Aug. 2006, and will be applied as model boundary and initial conditions for studying the impact of lightning-produced NOx on upper tropospheric ozone concentration.

In the future, we plan to apply TES ozone retrieval as boundary and initial conditions to CMAQ model to study the possible influence of lightning NOx on upper tropospheric ozone maximum that occurred at Huntsville, AL during Aug. 2006 and compare with IONS06 ozonesonde measurements. MetOp/GOME-2 is going to provide ozone, NO2, SO2, HCHO retrievals starting from Oct. 2006, and we can use these retrievals to improve the capacity of CMAQ model in simulating tropospheric ozone concentration and other air quality related trace gases.

 

 

 


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