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Evaluation of 2-μm Pulsed Integrated Path Differential Absorption Lidar for Carbon Dioxide Measurement—Technology Developments, Measurements, and Path to SpaceThe societal benefits of understanding climate change through the identification of global carbon dioxide sources and sinks led to the recommendation for NASA's Active Sensing of Carbon Dioxide Emissions over Nights, Days, and Seasons space-based mission for global carbon dioxide measurements. For more than 15 years, the NASA Langley Research Center has developed several carbon dioxide active remote sensors using the differential absorption lidar technique operating at 2-μm wavelength. Recently, an airborne double-pulsed integrated path differential absorption lidar was developed, tested, and validated for atmospheric carbon dioxide measurement. Results indicated 1.02% column carbon dioxide measurement uncertainty and 0.28% bias over the ocean. Currently, this technology is progressing toward triple-pulse operation targeting both atmospheric carbon dioxide and water vapor-the dominant interfering molecule on carbon dioxide remote sensing. Measurements from the double-pulse lidar and the advancement of the triple-pulse lidar development are presented. In addition, measurement simulations with a space-based IPDA lidar, incorporating new technologies, are also presented to assess feasibility of carbon dioxide measurements from space.
Document ID
20190026469
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1109/JSTARS.2017.2777453
Authors
Singh, Upendra N. ORCID(NASA Langley Research Center Hampton, VA, United States)
Refaat, Tamer F. (NASA Langley Research Center Hampton, VA, United States)
Petros, Mulugeta (NASA Langley Research Center Hampton, VA, United States)
Ismail, Syed (Analytical Services and Materials, Inc. Hampton, VA, United States)
Date Acquired
June 18, 2019
Publication Date
January 23, 2018
Publication Information
Publication: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Publisher: Institute of Electrical and Electronics Engineers
Volume: 11
Issue: 6
ISSN: 1939-1404
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NF1676L-28231
Funding Number(s)
WBS: 478643.02.09.02.02
PROJECT: SCMD-EarthScienceSystem_478643
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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