Far-infrared Spectroscopy of the Troposphere (FIRST): sensor calibration performance

Bingham, Gail E.; Latvakoski, Harri; Wellard, Stanley J.; Mlynczak, Martin G.; Johnson, David G.; Traub, Wesley A.; Jucks, K. W.

doi:10.1117/12.578770

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Point source scans will provide field-of-view characteristics. The FIRST calibration is described in the paper by Bingham et al 11 contained within this proceedings volume.…”

Section: First Calibrationmentioning

confidence: 99%

The far-infrared spectroscopy of the troposphere (FIRST) project

et al. 2005

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The far-infrared spectroscopy of the troposphere (FIRST) project is under development by NASA through its Instrument Incubator Program (IIP) administered by the Earth Science Technology Office. The objective of the FIRST project is to develop and demonstrate the technology needed to routinely observe from space the far-infrared spectrum between 15 and 100 micrometers in wavelength. This spectral region contains about half of the outgoing longwave radiation from the Earth and its atmosphere and is responsible for about half of the natural greenhouse effect. Radiative cooling of the free troposphere occurs almost exclusively in the far-infrared. The far-infrared emission is modulated almost entirely by water vapor, the main greenhouse gas. Cirrus clouds exhibit significant climate forcing in the far-infrared. Despite this fundamental science, the far-infrared has remained almost unobserved directly, primarily due to technological limitations. The FIRST project is advancing technology in the areas of high throughput interferometers, broad bandpass beamsplitters, and detector focal planes to enable routine measurement of the far-infrared from space. FIRST will conduct a technology demonstration on a high altitude balloon platform in Spring 2005.

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“…Point source scans will provide field-of-view characteristics. The FIRST calibration is described in the paper by Bingham et al 11 contained within this proceedings volume.…”

Section: First Calibrationmentioning

confidence: 99%

The far-infrared spectroscopy of the troposphere (FIRST) project

et al. 2005

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show abstract

“…Following that the instrument was adapted to operate from high-altitude ground-based sites to take measurements of the downwelling radiation, where the atmosphere is highly transparent to perform sounding in the FIR. 2006; Bingham et al 2005;Mlynczak et al 2005). FIRST is a FTS with a demonstrated spectral coverage of 50 cm −1 to cm −1 (200 µm to 5 µm) and a nominal resolution of 0.625 cm −1 .…”

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confidence: 99%

FORUM: Unique Far-Infrared Satellite Observations to Better Understand How Earth Radiates Energy to Space

Palchetti

Brindley

Bantges

et al. 2020

Bulletin of the American Meteorological Society

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“…Calibrating FIRST required addressing basic issues of absolute radiometric response, frequency scale, instrument line shape, phase alignment and self-apodization. Techniques for quantifying and modeling these effects were applied to FIRST 10,11,12,13,14,15 during its calibration. For Earth scene calibration, FIRST utilized the same calibration scheme adopted by the NPOESS Cross Track Infrared Sounder (CrIS) sensor with calibration information from space view (cold BB) and then the warm flight blackbody.…”

Section: First Calibrationmentioning

confidence: 99%

Far infrared spectroscopy of the troposphere (FIRST): flight performance and data processing

et al. 2006

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The radiative balance of the troposphere, and hence global climate, is dominated by the infrared absorption and emission of water vapor, particularly at far-infrared (far-IR) wavelengths from 15-50 µm. Current and planned satellites observe the infrared region to about 15.4 µm, ignoring spectral measurement of the far-IR region from 15 to 100µm. The far-infrared spectroscopy of the troposphere (FIRST) project, flown in June 2005, provided a balloon-based demonstration of the two key technologies required for a space-based far-IR spectral sensor. We discuss the FIRST Fourier transform spectrometer system (0.6 cm -1 unapodized resolution), its radiometric calibration in the spectral range from 10 to 100 µm, and its performance and science data from the flight. Two primary and two secondary goals are given and data presented to show the goals were achieved by the FIRST flight.

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Far-infrared Spectroscopy of the Troposphere (FIRST): sensor calibration performance

Cited by 4 publications

References 7 publications

The far-infrared spectroscopy of the troposphere (FIRST) project

The far-infrared spectroscopy of the troposphere (FIRST) project

FORUM: Unique Far-Infrared Satellite Observations to Better Understand How Earth Radiates Energy to Space

Far infrared spectroscopy of the troposphere (FIRST): flight performance and data processing

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