CaltechAUTHORS
  A Caltech Library Service

Microwave temperature and pressure measurements with the Odin satellite: I. Observational method

Pardo, J.R. and Ridal, M. and Murtagh, D. and Cernicharo, J. (2002) Microwave temperature and pressure measurements with the Odin satellite: I. Observational method. Canadian Journal of Physics, 80 (4). pp. 443-454. ISSN 0008-4204. http://resolver.caltech.edu/CaltechAUTHORS:PARcjp02

[img]
Preview
PDF
See Usage Policy.

186Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:PARcjp02

Abstract

The Odin satellite is equipped with millimetre and sub-millimetre receivers for observations of several molecular lines in the middle and upper atmosphere of our planet (~25–100 km, the particular altitude range depending on the species) for studies in dynamics, chemistry, and energy transfer in these regions. The same receivers are also used to observe molecules in outer space, this being the astrophysical share of the project. Among the atmospheric lines that can be observed, we find two corresponding to molecular oxygen (118.75 GHz and 487.25 GHz). These lines can be used for retrievals of the atmospheric temperature vertical profile. In this paper, we describe the radiative-transfer modeling for O2 in the middle and upper atmosphere that we will use as a basis for the retrieval algorithms. Two different observation modes have been planned for Odin, the three-channel operational mode and a high-resolution mode. The first one will determine the temperature and pressure on an operational basis using the oxygen line at 118.75 GHz, while the latter can be used for measurements of both O2 lines, during a small fraction of the total available time for aeronomy, aimed at checking the particular details of the radiative transfer near O2 lines at very high altitudes (>70 km). The Odin temperature measurements are expected to cover the altitude range ~30–90 km.


Item Type:Article
Additional Information:© 2002 NRC Canada. Received 13 May 1999. Accepted 23 November 2001. Published on the NRC Research Press Web site at http://cjp.nrc.ca/ on 30 April 2002. J.R. Pardo gratefully acknowledges the financial support of the Centre National d’Études Spatiales (France) and Météo-France for the development of this work. He also acknowledges Observatoire de Grenoble, Institut de Radioastronomie Millimétrique (IRAM), and Caltech Submillimetre Observatory (NSF grant AST-9980846) for the use of their facilities for some measurements presented in this paper. The work by the MISU group was supported by grants from the Swedish National Space Board.
Subject Keywords:LINE; SUBMILLIMETER; STRATOSPHERE; VALIDATION; MILLIMETER; PROFILES; SOUNDER; O-2
Record Number:CaltechAUTHORS:PARcjp02
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PARcjp02
Alternative URL:http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_abst_e?cjp_p01-158_80_ns_nf_cjp80-02
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7229
Collection:CaltechAUTHORS
Deposited By: Lindsay Cleary
Deposited On:23 Jan 2007
Last Modified:26 Dec 2012 09:30

Repository Staff Only: item control page