February 28, 2007
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FROM VOLUME 4, NUMBER 10, OCTOBER 1991
NASA Scales Back: A panel of outside experts convened by NASA at the
urging of the White House has recommended that the two large satellites planned
for the Earth Observing System (EOS) be replaced by a series of smaller, more
flexible satellites. This conclusion is consistent with recent suggestions made
by others, and NASA itself has started heading in that direction, in part
because of recent budget constraints. See Sci. News, pp. 198-199, Sep.
28, 1991; New Scientist, p. 11, Oct. 5. Several articles in Eos
discuss the redesign of EOS (p. 425, Oct. 1; p. 417, Sep. 24; p. 361, Aug. 20).
DOE Fellowships: Applications for the second round of U.S. Dept. of
Energy Global Change Distinguished Postdoctoral Fellowships, for the physical,
biological and geological sciences, are due Feb. 15, 1992. Contact Sci./Eng.
Educ. Div., Oak Ridge Assoc. Univ., POB 117, Oak Ridge TN 37831 (615-576-4805).
"Signs of Wet Weather in the Polar Mesosphere?" R. Stone, Science,
p. 1488, Sep. 27, 1991. Observations of noctilucent clouds in the polar
mesosphere have increased over the past decade; there is now evidence that
rising levels of methane are responsible.
"Report Nixes 'Geritol' Fix for Global Warming," L. Roberts,
ibid., pp. 1490-1491. A report from the American Society of Limnology
and Oceanography released in late summer rejects fertilizing the ocean with iron
as a greenhouse fix, but surprisingly endorses a small-scale test of the
"Global Warming Rings True," I. Anderson, New Scientist,
p. 23, Sep. 21, 1991. Tree-ring results from Tasmania are consistent with a
recent, rapid global warming. (See Cook article, Prof. Pub./Gen. Int.)
"Blooming Algae Warm the World," ibid., p. 23, Sep. 7.
Recent results of British oceanographers show that algae are a source of CO2,
rather than a sink as some climatologists had assumed.
"Volcanic Dust Threatens the Ozone Layer," J. Gribbin, ibid.,
p. 27. Calculations made at the University of Rome indicate that chlorine
present in the atmosphere from human activity could nearly double the amount of
ozone depletion expected from volcanic eruptions. (See also Geophys. Res.
Lett., p. 833, May 1991.)
"Greenhouse Bandwagon Rolls On," R.A. Kerr, Science, p.
845, Aug. 23, 1991. Marine geochemist Wallace Broecker is campaigning against
projects such as the World Ocean Circulation Experiment that he feels are
exploiting the recent burst of interest in global change to obtain funding.
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