Extrapolation of Earth-Based Solar Irradiance Measurements to Exoatmospheric Levels for Broad-Band and Selected Absorption-Band Observations

John A Reagan, Peter A. Pilewskie, Ian C. Scott-Fleming, Benjamin M. Herman, Avishai Ben-David

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

This paper describes techniques and presents results for extrapolating earth-based spectral-band measurements of directly transmitted solar irradiance to equivalent exoatmospheric signal gain settings of the Halogen Occultation Experiment (HALOE) sunsensor system being developed for the NASA Upper Atmosphere Research Satellite (UARS) and for the Stratospheric Aerosol and Gas (SAGE) II instrument launched in October 1984, on the NASA Earth Radiation Budget Satellite (ERBS). A band transmittance approach was employed for the HALOE sunsensor, which has a broad-band channel determined by the spectral responsivity of a silicon detector. A modified Langley plot approach, assuming a square-root law behavior for the water-vapor transmittance, was used for the SAGE II 940-nm water-vapor channel.

Original languageEnglish (US)
Pages (from-to)647-653
Number of pages7
JournalIEEE Transactions on Geoscience and Remote Sensing
VolumeGE-25
Issue number6
DOIs
StatePublished - 1987

Keywords

  • Exoatmospheric
  • Langley plot
  • solar radiometer
  • solar spectral irradiance

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Electrical and Electronic Engineering

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