Maximum and Minimum Temperature Trends for the Globe

American Association for the Advancement of Science (AAAS) - Tập 277 Số 5324 - Trang 364-367 - 1997
David R. Easterling1,2,3,4,5, B. H. Horton1,2,3,4,5, Phil Jones1,2,3,4,5, Thomas C. Peterson1,2,3,4,5, Thomas R. Karl1,2,3,4,5, D. E. Parker1,2,3,4,5, M. J. Salinger1,2,3,4,5, Vyacheslav Razuvayev1,2,3,4,5, Neil Plummer1,2,3,4,5, P. Jamason1,2,3,4,5, C. K. Folland1,2,3,4,5
1B. Horton, D. E. Parker, C. K. Folland, Hadley Center, Meteorological Office, Bracknell, Berkshire, UK.
2D. R. Easterling, T. C. Peterson, T. R. Karl, National Climatic Data Center, Asheville, NC 28801, USA.
3M. J. Salinger, National Institute of Water and Atmospheric Research, Auckland, New Zealand.
4P. D. Jones, Climatic Research Unit, University of East Anglia, Norwich, UK.
5V. Razuvayev, All-Russia Research Institute of Hydrometeorological Information, Obninsk, Russia.

Tóm tắt

Analysis of the global mean surface air temperature has shown that its increase is due, at least in part, to differential changes in daily maximum and minimum temperatures, resulting in a narrowing of the diurnal temperature range (DTR). The analysis, using station metadata and improved areal coverage for much of the Southern Hemisphere landmass, indicates that the DTR is continuing to decrease in most parts of the world, that urban effects on globally and hemispherically averaged time series are negligible, and that circulation variations in parts of the Northern Hemisphere appear to be related to the DTR. Atmospheric aerosol loading in the Southern Hemisphere is much less than that in the Northern Hemisphere, suggesting that there are likely a number of factors, such as increases in cloudiness, contributing to the decreases in DTR.

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Tài liệu tham khảo

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This paucity of data may become less of a problem with the introduction of maximum and minimum temperatures into the CLIMAT messages transmitted by the World Meteorological Organization. However there would still be a gap between the end of currently archived data and the end of 1994 when the new CLIMAT message format became effective. Furthermore some of the country data used here are continually updated and improved in an effort to provide better regional analyses (for example Australia) [S. Torokand N. Nicholls Aust. Meteorol. Mag. 45 251 (1996)].

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We thank P. Ya. Groisman for his insightful comments. Partial support for this work was provided by the U.S. Department of Energy.

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American Association for the Advancement of Science (AAAS)

Tập 277 Số 5324

364-367

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