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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 2 — Jan. 10, 2013
  • pp: 264–273

Far-infrared spectroscopy of the troposphere: instrument description and calibration performance

Harri Latvakoski, Martin G. Mlynczak, David G. Johnson, Richard P. Cageao, David P. Kratz, and Kendall Johnson  »View Author Affiliations


Applied Optics, Vol. 52, Issue 2, pp. 264-273 (2013)
http://dx.doi.org/10.1364/AO.52.000264


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Abstract

The far-infrared spectroscopy of the troposphere (FIRST) instrument is a Fourier transform spectrometer developed to measure the Earth’s thermal emission spectrum with a particular emphasis on far-infrared (far-IR) wavelengths greater than 15 μm. FIRST was developed under NASA’s Instrument Incubator Program to demonstrate technology for providing measurements from 10 to 100 μm (1000 to 100cm1) on a single focal plane with a spectral resolution finer than 1cm1. Presently no spectrometers in orbit are capable of directly observing the Earth’s far-IR spectrum. This fact, coupled with the fundamental importance of the far-IR to Earth’s climate system, provided the impetus for the development of FIRST. In this paper the FIRST instrument is described and results of a detailed absolute laboratory calibration are presented. Specific channels in FIRST are shown to be accurate in the far-IR to better than 0.3 K at 270 K scene temperature, 0.5 K at 247 K, and 1 K at 225 K.

© 2013 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.7030) Atmospheric and oceanic optics : Troposphere
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: September 7, 2012
Manuscript Accepted: October 20, 2012
Published: January 10, 2013

Citation
Harri Latvakoski, Martin G. Mlynczak, David G. Johnson, Richard P. Cageao, David P. Kratz, and Kendall Johnson, "Far-infrared spectroscopy of the troposphere: instrument description and calibration performance," Appl. Opt. 52, 264-273 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-2-264

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