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 5, NUMBER 8, AUGUST 1992
CO2 uptake by trees: Contrary to hopes that rising CO2 levels would
be compensated by increased growth of forests, experiments show that trees that
are not fertilized or irrigated do not increase carbon storage under elevated
CO2. (See Norby paper, Nature, p. 322, May 28, 1992, in Prof. Pubs./Gen.
Int.--Sci., this issue--Aug. 1992; also New York Times, p. C4, June 2.)
Pinatubo cooling detected: At an American Geophysical Union press
conference, NASA climatologist James Hansen said that the 0.4° C global
atmospheric cooling observed by satellite as of April is close to climate model
predictions of the effect of dust from Mount Pinatubo (Science, p. 1276,
May 29, 1992). A July 3 press release from the National Oceanic and Atmospheric
Administration reports that this cooling results from a 20-30 percent decrease
in direct solar radiation reaching the ground.
CO2 disposal: Norwegian researchers have concluded that it may be
possible to sequester CO2 from power stations in the deep ocean, even if it is
injected at relatively shallow depths near coastlines. (See Haugen and Drange,
Nature, p. 318, May 28, 1992, in Prof. Pub./Emissions & Control,
this issue--Aug. 1992.) In the same Nature issue (pp. 283-284), James C.
Orr of Princeton University comments on these findings, and concludes that ocean
injection of CO2 should only complement a strategy founded on energy
conservation and resource management.
Middle atmosphere cooling: New results showing a trend in the height
of a thin layer of sodium vapor 90 km above the Earth's surface add to other
evidence of possible global change at this level. See paper by Clemesha et al.
and comment by Garcia (Nature, May 7, 1992) in Prof. Pubs./Trend
Analysis, this issue--Aug. 1992.
Dissolved organic carbon: In 1988 Sugimura and Suzuki claimed the
existence of a major new pool of biospheric carbon based on a new technique for
measuring dissolved organic carbon in the ocean. Several recent papers give
conflicting views on their conclusions. (See Prof. Pub./Marine Biogeochem., this
"Researchers Look beyond UNCED," I. Mundell, Nature, p.
269, May 28. Environmental researchers comment on the relationship of their work
to preparations for the Earth Summit and subsequent activities, and recommend
that the U.N. set up an office on future scientific work.
Guide to Publishers
Index of Abbreviations