Global observations of the carbon budget 1. Expected satellite capabilities for emission spectroscopy in the EOS and NPOESS eras

Richard J. Engelen, A. Scott Denning, Kevin Gurney, Graeme L. Stephens

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

This paper investigates the expected capabilities of the new generation of infrared satellite sounders for detecting CO2. A general circulation model is used to simulate realistic CO2 fields and to define the needed accuracy of CO2 observations in order to be useful in constraining surface sources and sinks of CO2, which will be described in more detail in a future paper. Optimal estimation retrieval theory is then used to determine the possible accuracy of the satellite measurements and to define the retrieval characteristics. A discussion of several factors that affect the retrievals is also included. We conclude that tropospheric column retrievals of CO2 are possible with an accuracy of better than 1 ppmv on a monthly mean basis. Several factors, like thin cirrus clouds and radiative transfer modeling errors, will degrade these results if not carefully accounted for. The possibility of extensive time and spatial averaging of the satellite observations will overcome some of these problems.

Original languageEnglish (US)
Article number2001JD900223
Pages (from-to)20055-20068
Number of pages14
JournalJournal of Geophysical Research: Atmospheres
Volume106
Issue numberD17
StatePublished - Sep 16 2001
Externally publishedYes

Fingerprint

NPOESS
carbon budget
Emission spectroscopy
EOS
budgets
retrieval
Carbon
spectroscopy
Satellites
carbon
cirrus
radiative transfer
general circulation model
Radiative transfer
cirrus clouds
satellite observation
sounding
sinks
modeling
Infrared radiation

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Oceanography

Cite this

Global observations of the carbon budget 1. Expected satellite capabilities for emission spectroscopy in the EOS and NPOESS eras. / Engelen, Richard J.; Denning, A. Scott; Gurney, Kevin; Stephens, Graeme L.

In: Journal of Geophysical Research: Atmospheres, Vol. 106, No. D17, 2001JD900223, 16.09.2001, p. 20055-20068.

Research output: Contribution to journalArticle

Engelen, Richard J. ; Denning, A. Scott ; Gurney, Kevin ; Stephens, Graeme L. / Global observations of the carbon budget 1. Expected satellite capabilities for emission spectroscopy in the EOS and NPOESS eras. In: Journal of Geophysical Research: Atmospheres. 2001 ; Vol. 106, No. D17. pp. 20055-20068.
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