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                    森羅万象セミナー    第 58 回
               http://www.ep.sci.hokudai.ac.jp/~sinra/

                          Prof. Frank D. Stacey

     『A geophysical perspective on energy use and climate change』

            日時    2001 年 10 月 19 日 (金) 10:30 - 11:45

                  場所    理学部 2 号館 409 号室

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（講演要旨）

     The human use of energy exceeds 14 terawatts and is comparable to 
the energy dissipations in global scale geophysical processes. This 
simple fact imposes a fundamental restriction on the available options 
in the search for alternative energy sources, independently of 
environmental considerations or technical problems. Only the solar 
radiative power reaching the Earth clearly dwarfs our energy demand. 
Heat flow from the Earth, wind, waves, tides, and river flow appear too 
limited to become main players in the energy game. In this 
circumstances, and in the light of concerns about global warming, the 
intrinsic variability of solar power deserves more attention than it 
receives. The observation of a lunar periodicity in tropospheric 
temperature, not explained as a tidal effect, provides a calibration of 
the atmospheric response to radiative forcing, which tends to be 
obscured by atmospheric feedback mechanisms at other periods. It 
offers the prospect of a more quantitative measure of the climate 
effect of solar variability than we have had until now.

世話人：藤野清志

セミナー幹事: 倉本圭, 横畠徳太