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Sökning: onr:"swepub:oai:research.chalmers.se:18148490-be2e-400e-9e78-6190677475f8" > Validation of the I...

Validation of the Improved Limb Atmospheric Spectrometer-II (ILAS-II) Version 1.4 nitrous oxide and methane profiles

Ejiri, M.K., (författare)
National Institute for Environmental Studies of Japan, Japan, Utah State University, United States
Terao, Y., (författare)
Harvard University, USA
Sugita, T., (författare)
National Institute for Environmental Studies of Japan, Japan
visa fler...
Nakajima, H., (författare)
National Institute for Environmental Studies of Japan, Japan
Yokota, T., (författare)
National Institute for Environmental Studies of Japan, Japan
Toon, G., (författare)
Jet Propulsion Laboratory, California Institute of Technology, United States
Sen, B., (författare)
Karlsruhe Institute of Technology (KIT), Germany
Wetzel, G., (författare)
Karlsruhe Institute of Technology (KIT), Germany
Oelhaf, H., (författare)
Karlsruhe Institute of Technology (KIT), Germany
Urban, Joachim, 1964- (författare)
Chalmers tekniska högskola, Chalmers University of Technology
Murtagh, Donal, 1959- (författare)
Chalmers tekniska högskola, Chalmers University of Technology
Irie, H., (författare)
Frontier Research Center for Global Change, Japan
Saitoh, N., (författare)
National Institute for Environmental Studies of Japan, Japan, University of Tokyo, Japan
Tanaka, T., (författare)
National Institute for Environmental Studies of Japan, Japan
Kanzawa, H., (författare)
Nagoya University, Japan
Shiotani, M., (författare)
Kyoto University, Japan
Aoki, S., (författare)
Tohoku University, Japan
Hashida, G., (författare)
National Institute of Polar Research, Japan
Machida, T., (författare)
National Institute for Environmental Studies of Japan, Japan
Nakazawa, T., (författare)
Tohoku University, Japan
Kobayashi, H., (författare)
Central Research Institute of Electric Power Industry (CRIEPI), Japan
Sasano, Y., (författare)
National Institute for Environmental Studies of Japan, Japan
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2006
Engelska.
Ingår i: Journal of Geophysical Research. - 01480227 .- 21562202. ; 111:D22
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • This study assesses polar stratospheric nitrous oxide (N(2)O) and methane (CH(4)) data from the Improved Limb Atmospheric Spectrometer-II (ILAS-II) on board the Advanced Earth Observing Satellite-II (ADEOS-II) retrieved by the Version 1.4 retrieval algorithm. The data were measured between January and October 2003. Vertical profiles of ILAS-II volume mixing ratio (VMR) data are compared with data from two balloon-borne instruments, the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS-B) and the MkIV instrument, as well as with two satellite sensors, the Odin Sub-Millimetre Radiometer (SMR) for N(2)O and the Halogen Occultation Experiment (HALOE) for CH(4). Relative percentage differences between the ILAS-II and balloon/satellite data and their median values are calculated in 10-ppbv-wide bins for N(2)O (from 0 to 400 ppbv) and in 0.05-ppmv-wide bins for CH(4) (from 0 to 2 ppmv) in order to assess systematic differences between the ILAS-II and balloon/satellite data. According to this study, the characteristics of the ILAS-II Version 1.4 N(2)O and CH(4) data differ between hemispheres. For ILAS-II N(2)O VMR larger than 250 ppbv, the ILAS-II N(2)O agrees with the balloon/SMR N(2)O within +/- 20% in both hemispheres. The ILAS-II N(2)O in the VMR range from 30-50 to 250 ppbv (corresponding to altitudes of similar to 17-30 km in the Northern Hemisphere (NH, mainly outside the polar vortex) and similar to 13-21 km in the Southern Hemisphere (SH, mainly inside the polar vortex) is smaller by similar to 10-30% than the balloon/SMR N(2)O. For ILAS-II N(2)O VMR smaller than 30 ppbv (>similar to 21 km) in the SH, the differences between the ILAS-II and SMR N(2)O are within +/- 10 ppbv. For ILAS-II CH(4) VMR larger than 1 ppmv (similar to 30 km) and the ILAS-II CH(4) for its VMR smaller than 1 ppmv (>similar to 25 km) only in the NH, are abnormally small compared to the balloon/satellite data.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)

Nyckelord

ADEOS
SMR
ILAS
Odin

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