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Record Details

Record 59 of 28053
Development and Implementation of a Comprehensive Radiometric Validation Protocol for the CERES Earth Radiation Budget Climate Record Sensors
Author and Affiliation:
Priestley, K. J.(NASA Langley Research Center, Hampton, VA, United States)
Matthews, G.(Analytical Services and Materials, Inc., Hampton, VA, United States)
Thomas, S.(Science Applications International Corp., Hampton, VA, United States)
Abstract: The CERES Flight Models 1 through 4 instruments were launched aboard NASA's Earth Observing System (EOS) Terra and Aqua Spacecraft into 705 Km sun-synchronous orbits with 10:30 a.m. and 1:30 p.m. equatorial crossing times. These instruments supplement measurements made by the CERES Proto Flight Model (PFM) instrument launched aboard NASA's Tropical Rainfall Measuring Mission (TRMM) into a 350 Km, 38-degree mid-inclined orbit. CERES Climate Data Records consist of geolocated and calibrated instantaneous filtered and unfiltered radiances through temporally and spatially averaged TOA, Surface and Atmospheric fluxes. CERES filtered radiance measurements cover three spectral bands including shortwave (0.3 to 5 microns), total (0.3 to 100 microns) and an atmospheric window channel (8 to 12 microns). The CERES Earth Radiation Budget measurements represent a new era in radiation climate data, realizing a factor of 2 to 4 improvement in calibration accuracy and stability over the previous ERBE climate records, while striving for the next goal of 0.3-percent per decade absolute stability. The current improvement is derived from two sources: the incorporation of lessons learned from the ERBE mission in the design of the CERES instruments and the development of a rigorous and comprehensive radiometric validation protocol consisting of individual studies covering different spatial, spectral and temporal time scales on data collected both pre and post launch. Once this ensemble of individual perspectives is collected and organized, a cohesive and highly rigorous picture of the overall end-to-end performance of the CERES instrument's and data processing algorithms may be clearly established. This approach has resulted in unprecedented levels of accuracy for radiation budget instruments and data products with calibration stability of better than 0.2-percent and calibration traceability from ground to flight of 0.25-percent. The current work summarizes the development, philosophy and implementation of the protocol designed to rigorously quantify the quality of the data products as well as the level of agreement between the CERES TRMM, Terra and Aqua climate data records.
Publication Date: Jul 24, 2006
Document ID:
20080009758
(Acquired Feb 27, 2008)
Subject Category: METEOROLOGY AND CLIMATOLOGY
Report/Patent Number: Paper No. A45A-06
Document Type: Conference Paper
Meeting Information: 2006 Western Pacific Geophysics Meeting; 24-27 Jul. 2006; Beijing; China
Contract/Grant/Task Num: WBS 921266.04.07.07
Financial Sponsor: NASA Langley Research Center; Hampton, VA, United States
Organization Source: NASA Langley Research Center; Hampton, VA, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EARTH RADIATION BUDGET; ATMOSPHERIC RADIATION; FLIGHT INSTRUMENTS; CLIMATE; DATA PROCESSING; RADIOMETERS; ENERGY BUDGETS; TERRA SPACECRAFT; AQUA SPACECRAFT; EARTH OBSERVING SYSTEM (EOS); PROTOCOL (COMPUTERS)
Availability Source: Other Sources
Availability Notes: Abstract Only
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