By National Research Council, Division on Earth and Life Studies, Board on Atmospheric Sciences and Climate, Committee on Challenges in Representing Physical Processes in Coupled Atmosphere-Land-Ocean Models
The nationwide Academies' Board on Atmospheric Sciences and weather (BASC) held a workshop to discover and evaluation present efforts to version actual techniques of coupled atmosphere-land-ocean (A-L-O) versions. Numerical versions of the ambience and ocean are primary to climate prediction, learn, and schooling. even if nice strides were revamped the earlier few a long time in realizing the ambience and ocean, modeling features, and numerical A-L-O simulations, a few unresolved methods within the versions don't correctly signify wisdom of the underlying physics. furthermore, there's facts that additional growth in numerical simulations is being impeded via the gradual velocity of development within the illustration of key actual approaches within the types and the truth that geophysical movement versions aren't receiving the eye had to make those instruments extra important and exact. those versions usually are used to foretell destiny occasions, so it really is valuable that their underlying actual methods be represented as robustly as attainable. through the workshop, the parameterization of actual procedures in A-L-O versions used to be addressed, together with linked blunders, trying out, and efforts to enhance using parameterizations. members additionally tested highbrow and clinical demanding situations in modeling and highlighted the concept that the various key impediments to growth in representing actual strategies are basically cultural in nature.
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Incorrect parameterization of initial carbon pools and environmental dependence of respiration rates can then hide errors in models of the slower carbon flux processes that control future atmospheric CO2. Eddy covariance measurements of surface fluxes of heat, moisture, and CO2 are tremendously valuable for elucidating the dependence of land-atmosphere exchanges on radiation, temperature, and precipitation (soil moisture). The network of tower sites has unfortunately been oversold as a way to directly observe the time-mean source or sink of carbon, which is probably the weakest aspect of their measurements.
Wielicki. 2003. Confronting models with data: The GEWEX Cloud Systems Study. Bull. Amer. Meteor. Soc. 84:455469. Scaife, A. , N. Butchart, C. D. Warner, D. Stainforth, and W. Norton. 2000. Realistic quasi-biennial oscillations in a simulation of the global climate. Geophys. Res. Let. 27(21): 3481-3484. Scaife, A. , N. Butchart, C. D. Warner, and R. Swinbank. 2002. Impact of a spectral gravity wave parameterization on the stratosphere in the Met Office Unified Model. J. Atmos. Sci. 59(9):1473-1489.
J. Geophys. Res. (in press) Copyright © National Academy of Sciences. All rights reserved. html A Statement of Task This workshop, which will be open to the public, will use key presentations, panelist discussion, and open discussion to explore and evaluate current efforts to model physical processes of coupled atmosphere-ocean-land models. Specifically, the following questions will be addressed at the workshop: • What is the status of and what are the major errors associated with the parameterization of physical processes in A-L-O models ranging from localdaily scales to regional-decadal scales?
Improving the Scientific Foundation for Atmosphere-land-ocean Simulations: Report of a Workshop by National Research Council, Division on Earth and Life Studies, Board on Atmospheric Sciences and Climate, Committee on Challenges in Representing Physical Processes in Coupled Atmosphere-Land-Ocean Models