February 28, 2007
GCRIO Program Overview
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 8, NUMBER 3, MARCH 1995
OF GENERAL INTEREST: TEMPERATURE TRENDS
"Simulation of Recent Global Temperature Trends," N.E.
Graham (Sci. Res. Div., Scripps Inst. Oceanog., La Jolla CA
92093), Science, 267(5198), 666-671, Feb. 3, 1995.
Global average tropospheric temperatures have risen during the
past century. The sharp rise since the mid-1970s can be closely
reproduced by atmospheric models forced only with observed ocean
surface temperatures. Although the observed behavior may be from
natural climate variability, there is disquieting similarity
among the model results, observed climate trends in recent
decades, and the early expressions of the climatic response to
increased atmospheric CO2 in numerical simulations.
"Resampling of Network-Induced Variability in Estimates of
Terrestrial Air Temperature Change," S.M. Robeson (Dept.
Geog., Indiana Univ., Bloomington IN 47405), Clim. Change, 29(2),
213-229, Feb. 1995.
Addresses the problem of uneven and changing spatial
distributions of air temperature stations and the changing
numbers of stations in relation to estimates of air temperature
change derived from historical observation networks. Terrestrial
average air temperature anomaly estimates are produced that vary
by more than 0.3·C, solely due to network changes.
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