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Global Climate Change DigestArchives of the
Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 10, NUMBER 5, MAY 1997

NEWS...
RESEARCH NEWS


Item #d97may99

Longer, greener growing season: Satellite measurements show that in the northern high latitudes, photosynthetic activity increased between 1981 and 1991 in a manner suggesting increased plant growth associated with a longer growing season. The change in photosynthesis may be related to the observed rise of atmospheric CO2 or of temperature in those regions over the period. (See Myneni et al. paper and related comment, PROF. PUBS./OF GEN. INTEREST, thisGlobal Climate Change Digest issue--May 1997; also New Scientist, p. 16, Apr. 19, 1997, and The New York Times, p. C3, Apr. 22.)


Item #d97may100

Climate sensitivity to greenhouse gases may be on the high side of the range assumed in IPCC scenarios, suggests newly published simulations of ice age climate which show substantial cooling in the tropics. (See Webb article and related comment, PROF. PUBS./OF GEN. INTEREST, this Global Climate Change Digest issue--May 1997, and feature article in Global Environ. Change Rep., pp. 1-3, Feb. 28, 1997.)


Item #d97may101

West African droughts over the past 20 years may have been caused by the destruction of rainforests along its southern coast, according to simulations of the West African monsoon. (See Zheng article, New Scientist, p. 15, Jan. 18, 1997.)

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