Showing papers by "Fred A. Best published in 2013"
Langley Research Center1, Goddard Space Flight Center2, Harvard University3, California Institute of Technology4, Imperial College London5, University of Wisconsin-Madison6, Lawrence Berkeley National Laboratory7, National Physical Laboratory8, University of Michigan9, McGill University10, University of Maryland, College Park11, University of Colorado Boulder12, National Oceanic and Atmospheric Administration13, National Institute of Standards and Technology14, University of Miami15
TL;DR: The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission as discussed by the authors provides a calibration laboratory in orbit for the purpose of accurately measuring and attributing climate change.
Abstract: The Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission will provide a calibration laboratory in orbit for the purpose of accurately measuring and attributing climate change. CLARREO measurements establish new climate change benchmarks with high absolute radiometric accuracy and high statistical confidence across a wide range of essential climate variables. CLARREO's inherently high absolute accuracy will be verified and traceable on orbit to Systeme Internationale (SI) units. The benchmarks established by CLARREO will be critical for assessing changes in the Earth system and climate model predictive capabilities for decades into the future as society works to meet the challenge of optimizing strategies for mitigating and adapting to climate change. The CLARREO benchmarks are derived from measurements of the Earth's thermal infrared spectrum (5–50 μm), the spectrum of solar radiation reflected by the Earth and its atmosphere (320–2300 nm), and radio occultation refractivity from which...
244 citations
TL;DR: In this paper, the authors describe the CrIS radiometric calibration uncertainty based on pre-launch and on-orbit efforts to estimate calibration parameter uncertainties, and provide example results of recent post-launch validation efforts to assess the predicted uncertainty.
Abstract: [1] The Cross-track Infrared Sounder (CrIS) is the high spectral resolution spectroradiometer on the Suomi National Polar-Orbiting Partnership (NPP) satellite, providing operational observations of top-of-atmosphere thermal infrared radiance spectra for weather and climate applications This paper describes the CrIS radiometric calibration uncertainty based on prelaunch and on-orbit efforts to estimate calibration parameter uncertainties, and provides example results of recent postlaunch validation efforts to assess the predicted uncertainty Prelaunch radiometric uncertainty (RU) estimates computed for the laboratory test environment are less than ~02 K 3 sigma for blackbody scene temperatures above 250 K, with primary uncertainty contributions from the calibration blackbody temperature, calibration blackbody reflected radiance terms, and detector nonlinearity Variability of the prelaunch RU among the longwave band detectors and midwave band detectors is due to different levels of detector nonlinearity A methodology for on-orbit adjustment of nonlinearity correction parameters to reduce the overall contribution to RU and to reduce field of view (FOV)-to-FOV variability is described The resulting on-orbit RU estimates for Earth view spectra are less than 02 K 3 sigma in the midwave and shortwave bands, and less than 03 K 3 sigma in the longwave band Postlaunch validation efforts to assess the radiometric calibration of CrIS are underway; validation results to date indicate that the on-orbit RU estimates are representative CrIS radiance products are expected to reach “Validated” status in early 2014
81 citations
23 Jun 2013
TL;DR: The Absolute Radiance Interferometer (ARI) at UW-SSEC as mentioned in this paper is a state-of-the-art absolute radiiance interferometer that was designed and developed at the University of Wisconsin Space Science and Engineering Center.
Abstract: A summary of the instrument design and development, and the radiometric performance of the Absolute Radiance Interferometer (ARI) at the University of Wisconsin Space Science and Engineering Center (UW-SSEC) will be presented.
11 citations
01 Dec 2013
7 citations
23 Jun 2013
TL;DR: In this article, a prototype was developed for a new class of advanced accuracy FTS satellite instrumentation to make high-accuracy measurements of the earth's outgoing thermal radiance, for benchmarking climate change and testing climate models.
Abstract: The prototype was developed for a new class of advanced accuracy FTS satellite instrumentation to make high-accuracy measurements of the earth& rsquo;s outgoing thermal radiance, for benchmarking climate change and testing climate models.
23 Jun 2013
TL;DR: For the Hurricane and Severe Storm Sentinel (HS3) field experiment, the Scanning High-resolution Interferometer Sounder (S-HIS) now includes a ground segment delivering atmospheric profiles within 1 minute of observation from Global Hawk drone aircraft as mentioned in this paper.
Abstract: For the Hurricane and Severe Storm Sentinel (HS3) field experiment, the Scanning High-resolution Interferometer Sounder (S-HIS) now includes a ground segment delivering atmospheric profiles within 1 minute of observation from Global Hawk drone aircraft.
23 Jun 2013
TL;DR: In this article, an on-orbit absolute radiance standard (OARS) traceable to SI standards was developed to provide end-to-end calibration verification of high accuracy IR spectral radiance measurements, to better than 0.1K brightness temperature error.
Abstract: An on-orbit absolute radiance standard (OARS) traceable to SI standards on-orbit has been developed to provide end-to-end calibration verification of high accuracy IR spectral radiance measurements, to better than 0.1K brightness temperature error.