Atmospheric measurement analysis for the Radiometric Calibration Test Site (RadCaTS)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Radiometric Calibration Test Site (RadCaTS) was developed by the University of Arizona in the early 2000s to collect ground-based data in support of the calibration and validation of Earth-observing sensors. It uses the reflectance-based approach, which requires measurements of the atmosphere and surface reflectance. The measurements are used in MODTRAN to determine the at-sensor radiance for a given time and date. In the traditional reflectance-based approach, on-site personnel use an automated solar radiometer (ASR) to measure the atmospheric attenuation, but in the case of RadCaTS, an AERONET Cimel sun photometer is used to make atmospheric measurements. This work presents a comparison between the Cimel-derived atmospheric characteristics such as aerosol optical depth, the Angstrom exponent, and the columnar water vapor, to those derived using a traditional solar radiometer. The top-of-atmosphere radiance derived using the Cimel and ASR measurements are compared using Landsat 8 OLI bands as a test case for the period 2012-2014 to determine if any biases exist between the two methodologies.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9607
ISBN (Print)9781628417739
DOIs
StatePublished - 2015
EventEarth Observing Systems XX - San Diego, United States
Duration: Aug 10 2015Aug 13 2015

Other

OtherEarth Observing Systems XX
CountryUnited States
CitySan Diego
Period8/10/158/13/15

Keywords

  • absolute radiometric calibration
  • AERONET
  • Cimel
  • Landsat 8
  • OLI
  • RadCaTS

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Czapla-Myers, J. S. (2015). Atmospheric measurement analysis for the Radiometric Calibration Test Site (RadCaTS). In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9607). [96070A] SPIE. https://doi.org/10.1117/12.2188254