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Pressure Line Broadening and Feasibility of CO_2 Profile Retrieval using Near Infrared Observations of an Absorption Line

Shia, Run-Lie and Kuai, Le and Line, Michael R. and Trauger, John T. and Yung, Yuk L. (2013) Pressure Line Broadening and Feasibility of CO_2 Profile Retrieval using Near Infrared Observations of an Absorption Line. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20140822-092102214

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Abstract

Analytic expressions are derived for the transmittance and reflectance of sunlight and their Jacobians for an absorption line with Lorentz line broadening. Rodgers information analysis is applied to calculate the information content, the degrees of freedom and the averaging kernel for a simple atmospheric model to investigate the feasibility of retrieving the profile of CO_2 using near-infrared (NIR) measurements over a single absorption line. The results have implications for the design of future space instruments with high spectral resolution and high signal to noise ratios to obtain global scale information on the CO_2 vertical distribution which is important for inferring the sources, sinks, and transport of CO_2.


Item Type:Report or Paper (Discussion Paper)
ORCID:
AuthorORCID
Shia, Run-Lie0000-0003-1911-3120
Kuai, Le0000-0001-6406-1150
Line, Michael R.0000-0002-2338-476X
Alternate Title:Pressure Line Broadening and Feasibility of CO2 Profile Retrieval using Near Infrared Observations of an Absorption Line
Additional Information:We thank Dr. J. Margolis for his valuable suggestions on the noise-resolution relation for instruments, Dr. V. Natraj for helpful comments and GOSAT retrieval data and Dr. S. Newman for her suggestions to improve the manuscript. This research is supported in part by the Orbiting Carbon Observatory 2 (OCO-2) project, a NASA Earth System Science Pathfinder (ESSP) mission and Project JPL.1382974 to the California Institute of Technology.
Funders:
Funding AgencyGrant Number
NASA Orbiting Carbon Observatory 2 (OCO-2) ProjectUNSPECIFIED
JPLJPL.1382974
Record Number:CaltechAUTHORS:20140822-092102214
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140822-092102214
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48800
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Aug 2014 04:38
Last Modified:03 Oct 2019 07:07

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