HR: 1340h
AN: B43D-1602    [Abstracts]
TI: Ground-based Remote Sensing of Carbon Trace Gases: Validation of AERI CO Retrievals and Validation of Satellite CO Observations
AU: * Wilson, R C
EM: wilsonr1@umbc.edu
AF: University of Maryland at Baltimore County, UMBC Physics Department 1000 Hilltop Circle, Baltimore, MD 21250, United States
AU: Yurganov, L
EM: yurganov@umbc.edu
AF: University of Maryland at Baltimore County, UMBC Physics Department 1000 Hilltop Circle, Baltimore, MD 21250, United States
AU: McMillan, W W
EM: mcmillan@umbc.edu
AF: University of Maryland at Baltimore County, UMBC Physics Department 1000 Hilltop Circle, Baltimore, MD 21250, United States
AU: Novelli, P
EM: Paul.Novelli@noaa.gov
AF: NOAA ESRL Global Monitoring Division, 325 Broadway, GMD-1, Boulder, CO 80305, United States
AU: Fischer, M
EM: mlfischer@lbl.gov
AF: Lawrence Berkeley National Laboratory, 1, Cyclotron Road, Berkeley, CA 94720, United States
AU: Biraud, S
EM: scbiraud@lbl.gov
AF: Lawrence Berkeley National Laboratory, 1, Cyclotron Road, Berkeley, CA 94720, United States
AB: Global to regional satellite measurements of CO and other trace gases in the boundary layer can provide essential constraints for air quality forecasting and climate change science. We present validation of a carbon monoxide (CO) retrieval algorithm developed for zenith-viewing Atmospheric Emitted Radiance Interferometers (AERI) using co-located in situ measurements at the United States Department of Energy (DOE) Southern Great Plains (SGP) Atmospheric Radiation Measurements (ARM) site near Lamont, Oklahoma. The AERI measures downwelling radiation emitted from the atmosphere every 7-8 minutes, providing near real-time temperature and moisture profiling of the boundary layer since January, 1997. AERI CO averaging kernels indicate approximately 70% of the retrieved information comes from the boundary layer, with rapidly decreasing sensitivity to the free troposphere. We report a comparison of AERI CO retrievals with a combination of ground-based continuous measurements of CO mixing ratios at 60 m above the surface and weekly aircraft flask profiles (from 300 to 5000 m above ground level) at the SGP site between March, 2006 and April, 2007. Results show that AERI retrievals are well correlated with measured CO. A subset of the ten-year record of AERI CO retrievals are then compared with retrievals of lower tropospheric CO obtained from satellite-borne instruments including the Measurement Of Pollution In The Troposphere (MOPITT) instrument onboard Terra, the Atmospheric InfraRed Sounder (AIRS) onboard Aqua, and the Tropospheric Emission Spectrometer (TES) onboard Aura. Results from this comparison show that the satellite measurements successfully retrieve the column CO over the SGP.
DE: 0452 Instruments and techniques
DE: 0478 Pollution: urban, regional and global (0345, 4251)
DE: 0480 Remote sensing
SC: Biogeosciences [B]
MN: 2007 Fall Meeting