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

FROM VOLUME 2, NUMBER 2, FEBRUARY 1989

PROFESSIONAL PUBLICATIONS...
GLOBAL MODELING

Item #d89feb41

"How to Make Models for Behaviour of Clouds" (comment), M.E. Schlesinger (Dept. Atmos. Sci., Oregon State Univ., Corvallis OR 97331), Nature, 336(6197), 315-316, Nov. 24, 1988.

Discusses, in response to a previous article, the cloud-cover feedback component in general circulation models and explains why its sign is very difficult to estimate by intuition.

Item #d89feb42

"Dependence of Warm and Cold Climate Depiction on Climate Model Resolution," D. Rind (address immed. above), J. Climate, 1(10), 965-997, Oct. 1988.

Examines the resolution question by running doubled-CO₂ and ice age simulations with identical boundary conditions for two different resolutions with the GISS model. Discusses resolution dependency of climate change sensitivity, atmospheric dynamics and regional climate depictions. Results show that model resolution affects moist convection and the nonlinear transfer of kinetic energy into the zonal mean flow.

Item #d89feb43

"Climatic Effect of Observed Changes in Atmospheric Trace Gases at Antarctica," M. Lal (Ctr. Atmos. Sci., Indian Inst. Technol., Hauzkhas, New Delhi-110016, India), Atmos. Environ., 22(9), 2047-2048, 1988.

Uses a two-dimensional radiative-convective model of the earth-atmosphere system to examine the nature of the greenhouse effect and potential climatic effects of changes in trace gases at the surface and in the atmosphere over Antarctica.

Item #d89feb44

"Tropical Deforestation: Important Processes for Climate Models," A. Henderson-Sellers (Sch. Earth Sci., Macquarie Univ., North Rode, NSW, Australia), Climatic Change, 13(1), 43-67, Aug. 1988.

Reviews the results from the most recent study of climate change from tropical deforestation. Includes processes such as submodels for soil and forest canopy. Proposes a simulation methodology to treat ensuing questions such as: what are the parameters and predictions that govern the rate and extent of deforestation; what land cover replaces the forest; and what physical properties of the forest and its replacement are most important for the simulation.

Item #d89feb45

"The Radiative-Dynamical Response of a Stratospheric-Tropospheric General Circulation Model to Changes in Ozone," J.T. Kiehl (NCAR, POB 3000, Boulder CO 80307), B.A. Boville, J. Atmos. Sci., 45(12), 1798-1817, June 15, 1988.

Uses the NCAR community climate model to study imposed changes to the model ozone distribution for perpetual January conditions. The imposed changes include both uniform reductions of 50, 75 and 100 percent and an ozone reduction scenario calculated from a two-dimensional chemical model. Authors compare the response of the general circulation model to a model that employs the fixed dynamical heating assumption proposed by Fels et al.

Item #d89feb46

"Sensitivity of Soil Moisture to Doubling of Carbon Monoxide in Climate Model Experiments. Part II: The Asian Monsoon Region," Z.-C. Zhao, W.W. Kellogg (address immed. above), J. Climate, 367-378, Apr. 1988.

Compares results of five models (GFDL, GISS, NCAR, OSU, and UKMO) with respect to soil moisture distributions and sensitivity to CO₂ content. While there were significant differences in detailed results, regional results were similar, showing a drier average climate in the northern parts of the regions, with the season of highest soil moisture occurring in the mid-to-late winter in the northern parts and the mid-to-late summer in the southern parts. Doubling CO₂ intensified seasonally changing monsoon circulation.