February 28, 2007
GCRIO Program Overview
Our extensive collection of documents.
Archives of the
Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 8, NUMBER 6, JUNE 1995
OF GENERAL INTEREST: IMPACTS
Two related items in
Nature, 375(6530), June 1, 1995:
"Drought and Decline," J.A. Sabloff (Museum Archeol. &
Anthropol., Univ. Pennsylvania, Philadelphia PA 19104), 357. The relatively
sudden decline of Classic Maya civilization is seen at many sites. Hodell et
al., in the next paper, supply fresh evidence regarding climate change in the
region. The research raises a general question deserving of continued attention:
how severe do internal stresses in a civilization have to become before
relatively minor climate shifts can trigger widespread cultural collapse?
"Possible Role of Climate in the Collapse of Classic Maya Civilization,"
D.A. Hodell (Dept. Geol., Univ. Florida, Gainesville FL 32611), 391-394. Uses
temporal variations in oxygen isotope and sediment composition in a core from
Lake Chichancanab, Mexico, as a climate proxy, to reconstruct a continuous
record of Holocene climate change for the central Yucatan peninsula. The
interval between 1,300 and 1,100 yr bp was the driest of the middle-to-late
Holocene epoch, and coincided with the collapse of Classic Maya civilization.
Convective Weather in the Context of a Nighttime Global Warming," J.
Dessens (Ctr. Recherches Atmos., 653 Campistrous, France),
Geophys. Res. Lett., 22(10), 1241-1244, May 15, 1994.
The finding that most of the recently observed global warming is due to an
increase of nighttime temperature may have important implications on occurrence
of severe storms. This hypothesis was tested for France from 1946 to 1992. Two
elements (annual mean minimum temperature and a hail severity index) correlated
year-to-year, implying a 40% increase in hail damage for a 1° C increase in
mean minimum temperature.
and Human History. Some Indications from Europe, ad 400-1400," N. Brown
(Environ. Change Unit, Univ. Oxford, 1a Mansfield Rd., Oxford OX1 3TB, UK), Environ.
Pollut., 83, 37-43, 1994.
Examines the 1000 years after the collapse of Roman Europe, when
civilization seemed to wane, then wax and wane again, in phase with
deteriorations and improvements in climate. Shows the great vulnerability to
climatic perturbation of societies that are marginally poised for other reasons,
and concludes that the entire world society will be marginal in the 21st
the Impact of Rising Carbon Dioxide and Other Potential Climate Changes on
Vegetation," J.T. Baker (Agron. Dept., Univ. Florida, Gainsville FL 32611),
L.H. Allen Jr., ibid., 223-235.
Discusses how changes in climatic parameters, singly or in combination,
affect vegetation of varying species. However, there are few studies on the
interactive effect of CO2 concentration and temperature on plants,
and on the effects of UV-B radiation at elevated CO2 concentration.
Since CO2, UV-B, and temperature may increase concurrently, more
such research is needed to determine plant responses.
Guide to Publishers
Index of Abbreviations