Bridging the gap between microscale land-surface processes and land-atmosphere interactions at the scale of GCM`s
- Department of Meteorology and Physical Oceanography, Rutgers University, New Brunswick, New Jersey 08903 (United States)
Assuming that instantaneous wind can be separated into synoptic scale, mesoscale, and turbulent scale within a grid element of a GCM, the mesoscale kinetic energy per unit mass is defined as half the variance of mesoscale perturbations from the synoptic-scale wind. A simulation of the atmospheric boundary layer that develops above a locally deforested region is used to illustrate the relation that exists between mesoscale kinetic energy and mesoscale latent and sensible heat fluxes. A prognostic equation for mesoscale kinetic energy is suggested to relate subgrid-scale landscape heterogeneity to subgrid-scale convective clouds, which could be used to improve the parameterization of clouds and precipitation in GCMs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 142574
- Report Number(s):
- CONF-9201138--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 277; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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