Investigation of radiative tranfer model effect on radiometric inter-calibration of GPM sounder channels

Hamideh Ebrahimi, Saswati Datta, W. Linwood Jones

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This paper concerns the development of an improved algorithm for the inter-satellite radiometric calibration (XCAL) for microwave sounders in support of NASA's Global Precipitation Mission (GPM). This research extends previous XCAL work by incorporating different radiative transfer models for atmospheric water vapor absorption (namely; Rosenkranz and MonoRTM) to assess the robustness of the CFRSL 'double difference' technique for sounder X-CAL. This paper presents new results of the GPM Microwave Imager (GMI) comparisons with the SAPHIR sounder on the Megha-Tropique satellite. Using a one-year GMI observations, we present a statistical analysis of SAPHIR radiometric biases performed over time and viewing geometry (SAPHIR scan angles).

Original languageEnglish
Title of host publication2015 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4750-4753
Number of pages4
ISBN (Electronic)9781479979295
DOIs
StatePublished - Nov 10 2015
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Milan, Italy
Duration: Jul 26 2015Jul 31 2015

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2015-November

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015
Country/TerritoryItaly
CityMilan
Period07/26/1507/31/15

Keywords

  • GPM
  • SAPHIR
  • XCAL
  • microwave sounders

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