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Microphysical and optical properties of contrails and cirrus

Abstract

Aircraft contrails have significantly different properties to natural cirrus clouds. Their local and global climate impact cannot be assessed without consideration of these differences. Microphysical data were obtained from the Merlin aircraft equipped with a PMS FSSP-100 for particle spectrum measurements over the 3 {mu}m to 45 {mu}m diameter range; a PMS 2D-C for particle size spectrum and particle shape over the size range from 25 {mu}m to 800 {mu}m and a Johnson-Williams cloud liquid-water probe. Radiative measurements were obtained from a Do228 aircraft which carried the upward looking ALEX-F Lidar operating at a wavelength of 1.06 {mu}m and a Barnes PRT-5 radiometer aligned parallel to the lidar and with a 9 to 11 {mu}m spectral range. The limitation in accuracy of cloud microphysical sensor used in contrail studies are also discussed with subsequent errors on description of cloud radiative properties. (R.P.) 9 refs.
Authors:
Gayet, J F; Febvre, G; [1]  Brogniez, G; [2]  Wendling, P; [3]  Larsen, H [4] 
  1. Universite Blaise Pascal, Clermont-Ferand (France). Lab. de Meteorologie Physique
  2. Universite des Sciences et Techniques de Lille, (France). Lab. d`Optique Atmospherique
  3. Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V. (DLR), Oberpfaffenhofen (Germany). Inst. fuer Physik der Atmosphaere
  4. National Inst. for Water and Atmospheric Research, Wellington (New Zealand)
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
ONERA-97-Vol.1; CONF-9610234-
Reference Number:
SCA: 580000; 540110; 440600; PA: FRC-98:000120; EDB-98:076902; SN: 98001913090
Resource Relation:
Conference: International colloquium: Impact of aircraft emissions upon the atmosphere, Paris (France), 15-18 Oct 1996; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of impact of aircraft emissions upon the atmosphere. V. 1; PB: [381] p.
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; AIRCRAFT; CONDENSATES; CLOUDS; PARTICLES; OPTICAL RADAR; PARTICLE SIZE; ICE; INFRARED SPECTROMETERS
OSTI ID:
623596
Research Organizations:
Office National d`Etudes et de Recherches Aerospatiales (ONERA), 92 - Chatillon (France)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE98731902; TRN: FR9800120
Availability:
OSTI as DE98731902
Submitting Site:
FR
Size:
pp. 167-172
Announcement Date:

Citation Formats

Gayet, J F, Febvre, G, Brogniez, G, Wendling, P, and Larsen, H. Microphysical and optical properties of contrails and cirrus. France: N. p., 1997. Web.
Gayet, J F, Febvre, G, Brogniez, G, Wendling, P, & Larsen, H. Microphysical and optical properties of contrails and cirrus. France.
Gayet, J F, Febvre, G, Brogniez, G, Wendling, P, and Larsen, H. 1997. "Microphysical and optical properties of contrails and cirrus." France.
@misc{etde_623596,
title = {Microphysical and optical properties of contrails and cirrus}
author = {Gayet, J F, Febvre, G, Brogniez, G, Wendling, P, and Larsen, H}
abstractNote = {Aircraft contrails have significantly different properties to natural cirrus clouds. Their local and global climate impact cannot be assessed without consideration of these differences. Microphysical data were obtained from the Merlin aircraft equipped with a PMS FSSP-100 for particle spectrum measurements over the 3 {mu}m to 45 {mu}m diameter range; a PMS 2D-C for particle size spectrum and particle shape over the size range from 25 {mu}m to 800 {mu}m and a Johnson-Williams cloud liquid-water probe. Radiative measurements were obtained from a Do228 aircraft which carried the upward looking ALEX-F Lidar operating at a wavelength of 1.06 {mu}m and a Barnes PRT-5 radiometer aligned parallel to the lidar and with a 9 to 11 {mu}m spectral range. The limitation in accuracy of cloud microphysical sensor used in contrail studies are also discussed with subsequent errors on description of cloud radiative properties. (R.P.) 9 refs.}
place = {France}
year = {1997}
month = {Dec}
}