Simulation framework to estimate the performance of CO2 and O2 sensing from space and airborne platforms for the ASCENDS mission requirements analysis

Denis Pliutau; Narasimha S. Prasad

doi:10.1117/12.919476

21 May 2012 Simulation framework to estimate the performance of CO₂ and O₂ sensing from space and airborne platforms for the ASCENDS mission requirements analysis

Denis Pliutau, Narasimha S. Prasad

Author Affiliations +

Proceedings Volume 8379, Laser Radar Technology and Applications XVII; 83790K (2012) https://doi.org/10.1117/12.919476
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The Active Sensing of CO2 Emissions over Nights Days and Seasons (ASCENDS) mission recommended by the NRC Decadal Survey has a desired accuracy of 0.3% in carbon dioxide mixing ratio (XCO2) retrievals requiring careful selection and optimization of the instrument parameters. NASA Langley Research Center (LaRC) is investigating 1.57 micron carbon dioxide as well as the 1.26-1.27 micron oxygen bands for our proposed ASCENDS mission requirements investigation. Simulation studies are underway for these bands to select optimum instrument parameters. The simulations are based on a multi-wavelength lidar modeling framework being developed at NASA LaRC to predict the performance of CO₂ and O₂ sensing from space and airborne platforms. The modeling framework consists of a lidar simulation module and a line-by-line calculation component with interchangeable lineshape routines to test the performance of alternative lineshape models in the simulations. As an option the line-by-line radiative transfer model (LBLRTM) program may also be used for line-by-line calculations. The modeling framework is being used to perform error analysis, establish optimum measurement wavelengths as well as to identify the best lineshape models to be used in CO₂ and O₂ retrievals. Several additional programs for HITRAN database management and related simulations are planned to be included in the framework. The description of the modeling framework with selected results of the simulation studies for CO₂ and O₂ sensing is presented in this paper.

Citation Download Citation

Denis Pliutau and Narasimha S. Prasad "Simulation framework to estimate the performance of CO₂ and O₂ sensing from space and airborne platforms for the ASCENDS mission requirements analysis", Proc. SPIE 8379, Laser Radar Technology and Applications XVII, 83790K (21 May 2012); https://doi.org/10.1117/12.919476

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