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Pulsed Airborne Lidar Measurements of C02 Column AbsorptionWe report on airborne lidar measurements of atmospheric CO2 column density for an approach being developed as a candidate for NASA's ASCENDS mission. It uses a pulsed dual-wavelength lidar measurement based on the integrated path differential absorption (IPDA) technique. We demonstrated the approach using the CO2 measurement from aircraft in July and August 2009 over four locations. The results show clear CO2 line shape and absorption signals, which follow the expected changes with aircraft altitude from 3 to 13 km. The 2009 measurements have been analyzed in detail and the results show approx.1 ppm random errors for 8-10 km altitudes and approx.30 sec averaging times. Airborne measurements were also made in 2010 with stronger signals and initial analysis shows approx. 0.3 ppm random errors for 80 sec averaging times for measurements at altitudes> 6 km.
Document ID
20110013448
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Abshire, James B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Riris, Haris
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Allan, Graham R.
(Sigma Space, Inc. Lanham, MD, United States)
Weaver, Clark J.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Mao, Jianping
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Sun, Xiaoli
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hasselbrack, William E.
(Sigma Space, Inc. Lanham, MD, United States)
Rodriquez, Michael
(Sigma Space, Inc. Lanham, MD, United States)
Browell, Edward V.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
June 20, 2011
Subject Category
Optics
Report/Patent Number
GSFC.CP.4442.2011
Meeting Information
Meeting: Coherent Laser Radar Technology and Applications
Location: Long Beach, CA
Country: United States
Start Date: June 20, 2011
End Date: June 24, 2011
Distribution Limits
Public
Copyright
Public Use Permitted.
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