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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 4 — Feb. 1, 2004
  • pp: 914–927

Sensitivity studies for space-based measurement of atmospheric total column carbon dioxide by reflected sunlight

Jianping Mao and S. Randolph Kawa  »View Author Affiliations


Applied Optics, Vol. 43, Issue 4, pp. 914-927 (2004)
http://dx.doi.org/10.1364/AO.43.000914


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Abstract

The feasibility of making space-based carbon dioxide (CO2) measurements for global and regional carbon-cycle studies is explored. With the proposed detection method, we use absorption of reflected sunlight near 1.58 μm. The results indicate that the small (∼1%) changes in CO2 near the Earth’s surface are detectable provided that an adequate sensor signal-to-noise ratio and spectral resolution are achievable. Modification of the sunlight path by scattering of aerosols and cirrus clouds could, however, lead to systematic errors in the CO2 column retrieval; therefore ancillary aerosol and cloud data are important to reduce errors. Precise measurement of surface pressure and good knowledge of the atmospheric temperature profile are also required.

© 2004 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.1310) Remote sensing and sensors : Atmospheric scattering
(300.1030) Spectroscopy : Absorption
(300.6320) Spectroscopy : Spectroscopy, high-resolution

History
Original Manuscript: May 28, 2003
Revised Manuscript: October 14, 2003
Published: February 1, 2004

Citation
Jianping Mao and S. Randolph Kawa, "Sensitivity studies for space-based measurement of atmospheric total column carbon dioxide by reflected sunlight," Appl. Opt. 43, 914-927 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-4-914

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