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Study of Tropospheric Ozone from Space

Pawan Bhartia(1), Xiong Liu(2), Jerald Ziemke(2) and Sushil Chandra(2)

(1) NASA Goddard Space Flight Center, Mail Code 613.3, Greenbelt, Maryland, 20771, United States
(2) University of MD Baltimore County (UMBC), Mail Code 613.3, Greenbelt, Maryland, 20771, United States


We will provide an overview of the techniques that have been used to study tropospheric ozone using data from backscatter ultraviolet instruments on NASA satellites. These instruments include TOMS and OMI which have produced a time series that now spans more than 3 decades. So far the greatest success has been in studying the behavior of the tropical tropospheric ozone (TTO) on a variety of temporal scales. These studies have revealed the effects of biomass burning, lightning, Madden-Julian Oscillation, ENSO and other tropical phenomena on the TTO. Recent analysis of OMI data has allowed us to probe inside tropical deep convective clouds. Paradoxically, ozone inside these clouds appears to be a good marker of ozone in the planetary boundary layer that gets lofted up into the passing thunderstorm clouds, rather than ozone in the ambient air. Improvements in the tropospheric ozone retrieval techniques are now making it possible to extend the study region to the subtropics. We will discuss these enhancements and discuss how these results could be used in designing future satellite instruments to measure air quality from space.


Workshop presentation