Retrieval and Interpretation of Tropospheric Retrieval and Interpretation of Tropospheric Observations from GOMEObservations from GOME

Randall Martin Daniel Jacob Paul Palmer

Sushil Chandra Jerry Ziemke Mian Chin

Kelly Chance Thomas Kurosu Robert Spurr

RETRIEVAL OF BrO DURING SPRING SHOWS REGIONAL RETRIEVAL OF BrO DURING SPRING SHOWS REGIONAL EPISODIC TROPOSPHERIC OZONE DESTRUCTIONEPISODIC TROPOSPHERIC OZONE DESTRUCTION

Kelly Chance

INTEGRATED ANALYSIS OVER AMAZON DURING OCTOBERINTEGRATED ANALYSIS OVER AMAZON DURING OCTOBER

GOME HCHO GOME NO2

ATSR FIRECOUNTS

AEROSOLS DECREASE GOME SENSITIVITY TO NOAEROSOLS DECREASE GOME SENSITIVITY TO NO22 BY BY

MORE THAN 30% OVER BIOMASS BURNING REGIONSMORE THAN 30% OVER BIOMASS BURNING REGIONS

Based on aerosol fields from the GOCART model [Chin et al., 2002]

Calculated with LIDORT model [Spurr et al., 2001]

NO2 profiles from GEOS-CHEM

GOME Tropospheric NO2 GEOS-CHEM Tropospheric NO2

1015 molecules cm-2

DJF

MAM

JJA

SON

r = 0.75 bias=5%

GOME / GEOS-CHEM TROPOSPHERIC NOGOME / GEOS-CHEM TROPOSPHERIC NO22 COLUMNS OVER COLUMNS OVER

REGIONS THAT EXCEED THE RETRIEVAL UNCERTAINTYREGIONS THAT EXCEED THE RETRIEVAL UNCERTAINTY

DJF JJA

MAM SON

ANNUAL MEAN SURFACE NOANNUAL MEAN SURFACE NOXX EMISSIONS EMISSIONS

36.6

37.3

Tg N yr-1

TROPOSPHERIC OZONE DETERMINED FROM TOMS/MLS TROPOSPHERIC OZONE DETERMINED FROM TOMS/MLS SUGGESTS GEOS-CHEM NOSUGGESTS GEOS-CHEM NOXX EMISSIONS HIGH OVER INDIA EMISSIONS HIGH OVER INDIA

Dobson Units for March, April, May

TOMS/MLS Chandra et al. [2002]

GEOS-CHEM