Far infrared measurements of cirrus

I. G. Nolt; M. D. Vanek; N. D. Tappan; P. Minnis; J. L. Alltop; P. A.R. Ade; C. Lee; P. A. Hamilton; K. F. Evans; A. H. Evans; E. E. Clothiaux; A. J. Baran

Far infrared measurements of cirrus

I. G. Nolt, M. D. Vanek, N. D. Tappan, P. Minnis, J. L. Alltop, P. A.R. Ade, C. Lee, P. A. Hamilton, K. F. Evans, A. H. Evans, E. E. Clothiaux, A. J. Baran

Meteorology and Atmospheric Science

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Improved techniques for remote sensing of cirrus are needed to obtain global data for assessing the effect of cirrus in climate change models. Model calculations show that the far infrared/sub-millimeter spectral region is well suited for retrieving cirrus Ice Water Path and particle size parameters. Especially useful cirrus information is obtained at frequencies below 60 cm^-1 where single particle scattering dominates over thermal emission for ice particles larger than about 50 μm. Earth radiance spectra have been obtained for a range of cloud conditions using an aircraft-based Fourier transform spectrometer. The Far InfraRed Sensor for Cirrus (FIRSC) is a Martin-Puplett interferometer which incorporates a polarizer for the beamsplitter and can be operated in either intensity or linear polarization measurement mode. Two detector channels span 10 to 140 cm^-1 with a spectral resolution of 0.1 cm_-1; achieving a Noise Equivalent Temperature of approximately 1K at 30 cm^-1 in a 4 sec scan. Examples are shown of measured and modeled Earth radiance for a range of cloud conditions from 1998 and 1999 flights.

Original language	English (US)
Pages (from-to)	28-38
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3867
State	Published - Dec 1 1999
Event	Proceedings of the 1999 Satellite Remote Sensing of Clouds and the Atmosphere IV - Florence, Italy Duration: Sep 20 1999 → Sep 22 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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@article{7eaea98928844ef682f952190f4f0291,

title = "Far infrared measurements of cirrus",

abstract = "Improved techniques for remote sensing of cirrus are needed to obtain global data for assessing the effect of cirrus in climate change models. Model calculations show that the far infrared/sub-millimeter spectral region is well suited for retrieving cirrus Ice Water Path and particle size parameters. Especially useful cirrus information is obtained at frequencies below 60 cm-1 where single particle scattering dominates over thermal emission for ice particles larger than about 50 μm. Earth radiance spectra have been obtained for a range of cloud conditions using an aircraft-based Fourier transform spectrometer. The Far InfraRed Sensor for Cirrus (FIRSC) is a Martin-Puplett interferometer which incorporates a polarizer for the beamsplitter and can be operated in either intensity or linear polarization measurement mode. Two detector channels span 10 to 140 cm-1 with a spectral resolution of 0.1 cm-1; achieving a Noise Equivalent Temperature of approximately 1K at 30 cm-1 in a 4 sec scan. Examples are shown of measured and modeled Earth radiance for a range of cloud conditions from 1998 and 1999 flights.",

author = "Nolt, {I. G.} and Vanek, {M. D.} and Tappan, {N. D.} and P. Minnis and Alltop, {J. L.} and Ade, {P. A.R.} and C. Lee and Hamilton, {P. A.} and Evans, {K. F.} and Evans, {A. H.} and Clothiaux, {E. E.} and Baran, {A. J.}",

year = "1999",

month = dec,

day = "1",

language = "English (US)",

volume = "3867",

pages = "28--38",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Proceedings of the 1999 Satellite Remote Sensing of Clouds and the Atmosphere IV ; Conference date: 20-09-1999 Through 22-09-1999",

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TY - JOUR

T1 - Far infrared measurements of cirrus

AU - Nolt, I. G.

AU - Vanek, M. D.

AU - Tappan, N. D.

AU - Minnis, P.

AU - Alltop, J. L.

AU - Ade, P. A.R.

AU - Lee, C.

AU - Hamilton, P. A.

AU - Evans, K. F.

AU - Evans, A. H.

AU - Clothiaux, E. E.

AU - Baran, A. J.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - Improved techniques for remote sensing of cirrus are needed to obtain global data for assessing the effect of cirrus in climate change models. Model calculations show that the far infrared/sub-millimeter spectral region is well suited for retrieving cirrus Ice Water Path and particle size parameters. Especially useful cirrus information is obtained at frequencies below 60 cm-1 where single particle scattering dominates over thermal emission for ice particles larger than about 50 μm. Earth radiance spectra have been obtained for a range of cloud conditions using an aircraft-based Fourier transform spectrometer. The Far InfraRed Sensor for Cirrus (FIRSC) is a Martin-Puplett interferometer which incorporates a polarizer for the beamsplitter and can be operated in either intensity or linear polarization measurement mode. Two detector channels span 10 to 140 cm-1 with a spectral resolution of 0.1 cm-1; achieving a Noise Equivalent Temperature of approximately 1K at 30 cm-1 in a 4 sec scan. Examples are shown of measured and modeled Earth radiance for a range of cloud conditions from 1998 and 1999 flights.

AB - Improved techniques for remote sensing of cirrus are needed to obtain global data for assessing the effect of cirrus in climate change models. Model calculations show that the far infrared/sub-millimeter spectral region is well suited for retrieving cirrus Ice Water Path and particle size parameters. Especially useful cirrus information is obtained at frequencies below 60 cm-1 where single particle scattering dominates over thermal emission for ice particles larger than about 50 μm. Earth radiance spectra have been obtained for a range of cloud conditions using an aircraft-based Fourier transform spectrometer. The Far InfraRed Sensor for Cirrus (FIRSC) is a Martin-Puplett interferometer which incorporates a polarizer for the beamsplitter and can be operated in either intensity or linear polarization measurement mode. Two detector channels span 10 to 140 cm-1 with a spectral resolution of 0.1 cm-1; achieving a Noise Equivalent Temperature of approximately 1K at 30 cm-1 in a 4 sec scan. Examples are shown of measured and modeled Earth radiance for a range of cloud conditions from 1998 and 1999 flights.

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M3 - Conference article

AN - SCOPUS:0033342234

SN - 0277-786X

VL - 3867

SP - 28

EP - 38

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Proceedings of the 1999 Satellite Remote Sensing of Clouds and the Atmosphere IV

Y2 - 20 September 1999 through 22 September 1999

ER -

Far infrared measurements of cirrus

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

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