Description

Anevolutionaiy improvement to the existing GOES I-M Sounder has been proposed as the GOES High-Resolution Interferometer Sounder (GHIS). This instrument will be based upon technology developed during successful demonstrations of an airborne Michelson interferometer instrument for the temperature and moisture sounding of the atmosphere from passive infrared measurements. The spectral resolution afforded by the interferometer technology will substantially improve retrieval accuracy and vertical resolution of the sounding information. Simulations of the spectral radiance measurements have been used to study the expected retrieval performance of the GHIS. A fast transmittance code has been used in the simulations and in the calculation ofthe retrieval operator in an iterative, non-linear physical retrieval scheme. The effects of instrument noise and spectral operating mode have been considered in the retrieval simulation. A measure of the vertical resolution of the retrieved profiles has been developed. This measure considers the correlation in the retrieval error between atmospheric levels of the retrieved parameters. The effects of both the instrument characteristics and those of the retrieval algorithm are thus considered in this measure. The results indicate that the GHIS is expected to provide temperature retrieval accuracy on the order of 1°C throughout the troposphere which will be a significant improvement over the existing GOES-8 sounder. The vertical resolution simulations also show improvement over GOES-8 capabilities.

Date of creation, presentation, or exhibit

8-7-1996

Comments

GOES-8 and Beyond 2812 (1996) 409-418 "GOES high-resolution interferometer sounder retrieval performance simulations," Proceedings of GOES-8 and Beyond, vol. 2812. International Society of Optical Engineers. Held in Denver, Colorado: 7-9 August 1996. Copyright 1996 Society of Photo-Optical Instrumentation Engineers. This paper was published in GOES-8 and Beyond, SPIE vol. 2812 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. This work was sponsored by the National Oceanic and Atmospheric Administration under Air Force Contract F19628-95-C-0002. The authors would like to thank David Hearn of MIT/LL for performing the GHIS radiometric noise calculations. ISBN: 081-94-2200-2Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Proceeding

Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)

Campus

RIT – Main Campus

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