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 2, NUMBER 1, JANUARY 1989
RADIATION AND GLOBAL MODELING
"Simultaneous Measurement of UV Radiation Received by the Biosphere
and Total Ozone Amount," K. Stamnes (Dept. Phys., Univ. Alaska), K.
Henriksen, P. Ostensen, Geophys. Res. Lett., 15(8), 784-787,
Demonstrates the feasibility of determining atmospheric ozone abundances and
spectral ultraviolet irradiances simultaneously with a UV-sensitive
spectrometer, providing the missing link between stratospheric ozone content and
UV radiation received at the ground. Suggests that this procedure be used to
monitor the relation between atmospheric ozone amounts and UV radiation
transmitted through the atmosphere. Also, by combining UV measurements with
appropriate radiation transfer modeling, it is possible to assess the effects of
cloud cover and aerosol loading on UV transmittance.
"Fluxes and Influxes of Heat Radiation in the 15 micro m CO2 Band,"
Y.M. Timofeev (Leningrad State Univ.), T.A. Naumova, A.V. Polyakov, Soviet
Meteor. Hydrol., 27-31, 1988 (trans. of Meteor. Gidrologiya, 2,
A new integral function of the 15 micro m CO2 band has been constructed that
includes temperature dependence. Temperature dependence is especially
substantial in calculations of descending fluxes and influxes of radiation in
the stratosphere. The greatest errors in calculating radiation influxes are
observed in winter.
"Runaway and Moist Greenhouse Atmospheres and the Evolution of Earth
and Venus," J.F. Kasting (NASA Ames Res. Ctr., Moffett Field CA 94035),
Icarus, 74, 472-494, June 1988.
Uses a one-dimensional climate model to examine the response of an earthlike
atmosphere to large solar flux increases, for fully moisture-saturated,
cloud-free conditions. The critical solar flux at which a runaway greenhouse
(total evaporation of oceans) occurs is estimated to be 1.4 times the present
flux at the earth's orbit, and is almost independent of the CO2 content of the
atmosphere. The value is, however, sensitive to the H2O absorption coefficient
in the 8-12 micron window. The oceans of Venus may have been lost early in the
planet's history due to rapid water vapor photodissociation, followed by
hydrogen escape into space.
"A Methodology for Understanding and Intercomparing Atmospheric
Climate Feedback Processes in General Circulation Models," R.D. Cess
(Atmos. Sci. Dept., State Univ. N.Y., Stony Brook NY 11794), G.L. Potter, J.
Geophys. Res., 93(D7), 8305-8314, July 20, 1988.
Suggests design of future climate model simulations that take changes due to
increasing atmospheric CO2 into account. Also suggests that seasurface
temperature perturbations may be used in conjunction with separation of clear
and overcast regions within a model. Illustrates this approach through the use
of the Oregon State University/Lawrence Livermore National Laboratory General
Guide to Publishers
Index of Abbreviations