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A 4 U Laser Heterodyne Radiometer for Methane (CH4) and Carbon Dioxide (CO2) Measurements from an Occultation-Viewing CubeSatWe present a design for a 4 U (20 cm 20 cm 10 cm) occultation-viewing laser heterodyne radiometer (LHR) that measures methane (CH4), carbon dioxide (CO2) and water vapor(H2O) in the limb that is designed for deployment on a 6 U CubeSat. The LHR design collects sunlight that has undergone absorption by the trace gas and mixes it with a distributive feedback (DFB) laser centered at 1640 nm that scans across CO2, CH4, and H2O absorption features. Upper troposphere lower stratosphere measurements of these gases provide key inputs to stratospheric circulation models: measuring stratospheric circulation and its variability is essential for projecting how climate change will affect stratospheric ozone.
Document ID
20170007781
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1088/1361-6501/aa5440
Authors
Wilson, Emily L. (NASA Goddard Space Flight Center Greenbelt, MD United States)
DiGregorio, A. J. (Science Systems and Applications, Inc. Lanham, MD, United States)
Riot, Vincent J. (Lawrence Livermore National Lab. Livermore, CA, United States)
Ammons, Mark S. (Lawrence Livermore National Lab. Livermore, CA, United States)
Bruner, WIlliam W. (Lawrence Livermore National Lab. Livermore, CA, United States)
Carter, Darrell (Lawrence Livermore National Lab. Livermore, CA, United States)
Mao, Jianping (Maryland Univ. College Park, MD, United States)
Ramanathan, Anand (Maryland Univ. College Park, MD, United States)
Strahan, Susan E. (Universities Space Research Association Columbia, MD, United States)
Oman, Luke D. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Hoffman, Christine (California Univ. Merced, CA, United States)
Garner, Richard M. (Science Systems and Applications, Inc. Lanham, MD, United States)
Date Acquired
August 17, 2017
Publication Date
January 13, 2017
Publication Information
Publication: Measurement Science and Technology
Publisher: Measurement Science and Technology
Volume: 28
Issue: 3
ISSN: 0957-0233
e-ISSN: 1361-6501
Subject Category
Geophysics
Report/Patent Number
GSFC-E-DAA-TN45718
Funding Number(s)
CONTRACT_GRANT: DE-AC52-07NA27344
CONTRACT_GRANT: NNG15HQ01C
Distribution Limits
Public
Copyright
Other
Keywords
occultation
laser heterodyne radiometer
greenhouse gases
methane
water vapor
carbon dioxide
CubeSat

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