February 28, 2007
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FROM VOLUME 4, NUMBER 1, JANUARY 1991
- Role of Polar Regions in Global Change, held at Univ. of Alaska,
Fairbanks, June 1990. Eos, p. 1758, Oct. 30, 1990.
- Climate Impact of Solar Variability, held at Goddard Space Flight
Center, Maryland, April 1990. Eos, p. 1103, Sep. 25, 1990.
"Tiny Bubbles Explain the Babble of Undersea Noise," M.W.
Browne, New York Times, pp. C1, C4, Dec. 11, 1990. A recent conference
on acoustical oceanography discussed developments in understanding and
exploiting the sound made by the breaking of tiny bubbles in the ocean. This may
provide efficient techniques for measuring rainfall at sea and the direction and
speed of ocean currents, both climatically important variables. (See also Sci.
News, p. 341, Dec. 1.)
"`Fixing' the Greenhouse Problem?" J. Emsley, New Scientist,
p. 12, Dec. 22-29, 1990. Chemists in Japan have discovered a copper compound
that could lead to a process for extracting (or fixing) carbon dioxide from the
air, although the practicality of the scheme has been questioned by a leading
"A Climate of Change Sweeps the Tropics," J. Hecht, ibid.,
p. 13. Two U.S. researchers studying the temperature in the tropics in the
distant past have cast doubt upon the assumption that the tropics are well
insulated from climatic change.
"The Sea's Forgotten Carbon Enters the Climate Debate," D.
Charles, ibid., p. 10, Dec. 15, 1990. Observations made during one field
experiment of the international Joint Ocean Flux Study, show that levels of
dissolved organic carbon molecules fall as much as 30 percent during the spring
bloom of phytoplankton. Previously, dissolved organic carbon was not even
included in models of the earth's carbon cycle because it was thought to be
"How Do Plankton Handle the Ozone Hole?" C. Joyce, ibid.,
p. 35, Sep. 22, 1990. Describes research on the effects of increased ultraviolet
light on bacteria, algae and plankton, carried out on a National Science
Foundation research ship in October, the Antarctic spring.
"Busy Bacteria May Reduce the Risk of a Runaway Greenhouse,"
ibid., p. 30, July 28, 1990. Research on tundra at the University of
Alaska indicates that warming of the polar regions could produce a negative
greenhouse feedback as bacteria reduce methane production. (See Whalen article,
Nature, p. 160, July 12, 1990, in Prof. Pubs./Earth System Science.)
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