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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 18 — Jun. 20, 2009
  • pp: 3322–3336

Retrievals of atmospheric CO2 from simulated space-borne measurements of backscattered near-infrared sunlight: accounting for aerosol effects

André Butz, Otto P. Hasekamp, Christian Frankenberg, and Ilse Aben  »View Author Affiliations


Applied Optics, Vol. 48, Issue 18, pp. 3322-3336 (2009)
http://dx.doi.org/10.1364/AO.48.003322


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Abstract

Retrievals of atmospheric carbon dioxide (CO2) from space-borne measurements of backscattered near-infrared sunlight are hampered by aerosol and cirrus cloud scattering effects. We propose a retrieval approach that allows for the retrieval of a few effective aerosol parameters simultaneously with the CO2 total column by parameterizing particle amount, height distribution, and microphysical properties. Two implementations of the proposed method covering different spectral bands are tested for an ensemble of simulated nadir observations for aerosol (and cirrus) loaded scenes over low- and mid-latitudinal land surfaces. The residual aerosol-induced CO2 errors are mostly below 1% up to aerosol optical thickness 0.5. The proposed methods also perform convincing for scenes where cirrus clouds of optical thickness 0.1 overlay the aerosol.

© 2009 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(290.1090) Scattering : Aerosol and cloud effects
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: March 17, 2009
Revised Manuscript: May 22, 2009
Manuscript Accepted: May 26, 2009
Published: June 10, 2009

Citation
André Butz, Otto P. Hasekamp, Christian Frankenberg, and Ilse Aben, "Retrievals of atmospheric CO2 from simulated space-borne measurements of backscattered near-infrared sunlight: accounting for aerosol effects," Appl. Opt. 48, 3322-3336 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-18-3322

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