How will changes in carbon dioxide and methane modify the mean structure of the mesosphere and the thermosphere

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Geophysical Research Letters (American Geophysical Union); (USA)

DOI:https://doi.org/10.1029/GL016i012p01441· OSTI ID:5608809

Roble, R G; Dickinson, R E ^[1]

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1. National Center for Atmospheric Research, Boulder, CO (USA)

A global average model of the coupled mesosphere, thermosphere and ionosphere is used to examine the effect of trace gas variations on the overall structure of these regions. In particular, the variations caused by CO{sub 2} and CH{sub 4} doublings and halvings from present day mixing ratios are presented. The results indicate that the mesosphere and thermosphere temperatures will cool by about 10K and 50K respectively as the Co{sub 2} and Ch{sub 4} mixing ratios are doubled. These regions are heated by similar amounts when the trace gas mixing ratios are halved. Compositional redistributions also occur in association with changes in the temperature profile. The results show that global change will occur in the upper atmosphere and ionosphere as well as in the lower atmosphere during the 21st century.

• OSTI ID: 5608809
• Journal Information: Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 16:12; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

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