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Ultraspectral Sounding Retrieval Error Budget and Estimation
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Author and Affiliation:
Zhou, Daniel K.(NASA Langley Research Center, Hampton, VA, United States);
Larar, Allen M.(NASA Langley Research Center, Hampton, VA, United States);
Liu, Xu(NASA Langley Research Center, Hampton, VA, United States);
Smith, William L.(Hampton Univ., VA, United States);
Strow, L. Larrabee(Maryland Univ. Baltimore County, Baltimore, MD, United States);
Yang, Ping(Texas A&M Univ., College Station, TX, United States)
Abstract: The ultraspectral infrared radiances obtained from satellite observations provide atmospheric, surface, and/or cloud information. The intent of the measurement of the thermodynamic state is the initialization of weather and climate models. Great effort has been given to retrieving and validating these atmospheric, surface, and/or cloud properties. Error Consistency Analysis Scheme (ECAS), through fast radiative transfer model (RTM) forward and inverse calculations, has been developed to estimate the error budget in terms of absolute and standard deviation of differences in both spectral radiance and retrieved geophysical parameter domains. The retrieval error is assessed through ECAS without assistance of other independent measurements such as radiosonde data. ECAS re-evaluates instrument random noise, and establishes the link between radiometric accuracy and retrieved geophysical parameter accuracy. ECAS can be applied to measurements of any ultraspectral instrument and any retrieval scheme with associated RTM. In this paper, ECAS is described and demonstration is made with the measurements of the METOP-A satellite Infrared Atmospheric Sounding Interferometer (IASI)..
Publication Date: Sep 19, 2011
Document ID:
20110015883
(Acquired Oct 03, 2011)
Subject Category: GEOPHYSICS
Report/Patent Number: NF1676L-13280
Document Type: Conference Paper
Meeting Information: SPIE Remote Sensing Europe 2011; 19-22 Sep. 2011; Prague; Czech Republic
Meeting Sponsor: International Society for Optical Engineering; United States
Contract/Grant/Task Num: WBS 199008.02.07.9474.11
Financial Sponsor: NASA; Washington, DC, United States
NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 6p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: ATMOSPHERIC COMPOSITION; ATMOSPHERIC SOUNDING; CLIMATE MODELS; CLOUD PHYSICS; ERROR ANALYSIS; INFRARED INTERFEROMETERS; METEOROLOGICAL PARAMETERS; RADIATIVE TRANSFER; REMOTE SENSING; STANDARD DEVIATION; THERMODYNAMICS; CONSISTENCY; DOMAINS; GEOPHYSICS; RADIOSONDES; RANDOM NOISE; SURFACE PROPERTIES
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