February 28, 2007
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FROM VOLUME 5, NUMBER 11, NOVEMBER 1992
TREND ANALYSIS: UPPER ATMOSPHERE
"Long-Term Variation of Stratospheric Temperature at the North Pole,"
R.P. Kane (Inst. Nacl. Pesquisas Especiasis, Caixa Postal 515, BR-12201 Sao Josť
Campos, Brazil), J. Atmos. Terr. Phys., 54(9), 1139-1148, Sep.
Examination of 30 mb temperatures shows quasi-biennial oscillations, but
also decreased temperatures since 1978, likely associated with greenhouse gases.
"Possible Radioindications of Anthropogenic Influences on the
Mesosphere and Lower Thermosphere," K. Serafimov (Dept. Astron., Bulgarian
Acad. Sci., 72 Lenin Blvd., Sofia 1784, Bulgaria), M. Serafimova, J. Atmos.
Terr. Phys., 54(7-8), 847-850, July-Aug. 1992.
Analyzes global anthropogenic influences on several ionospheric
characteristics, showing that the collision frequency is the parameter that
changes most when the ratio between CO2 plus CH4 and other components is
changed. Hence ionospheric absorption may be the most sensitive ground-based
indicator of global cooling of near-Earth space. Recommends a frequency range of
400 to 800 kHz.
"Mesospheric Clouds and the Physics of the Mesopause Region,"
G.E. Thomas (Lab. Atmos. Phys., Univ. Colorado, Boulder CO 80309), Rev.
Geophys., 29(4), 553-575, Nov. 1991.
A review of the topic, which discusses the implications of apparent secular
changes in cloud brightness for global change of the entire atmosphere, and
suggests needed research. (A news article in Science (p. 1488, Sep. 27,
1991) mentions this paper in relation to the possibility that increasing levels
of methane are producing water vapor, leading to the increasing frequency of
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