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Comparing the degree of land-atmosphere interaction in four atmospheric general circulation models
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Koster, Randal D. Dirmeyer, Paul A. Hahmann, Andrea N. Ijpelaar, Ruben Tyahla, Lori Cox, Peter Suarez, Max J. |
| Copyright Year | 2001 |
| Description | Land-atmosphere feedback, by which (for example) precipitation-induced moisture anomalies at the land surface affect the overlying atmosphere and thereby the subsequent generation of precipitation, has been examined and quantified with many atmospheric general circulation models (AGCMs). Generally missing from such studies, however, is an indication of the extent to which the simulated feedback strength is model dependent. Four modeling groups have recently performed a highly controlled numerical experiment that allows an objective inter-model comparison of land-atmosphere feedback strength. The experiment essentially consists of an ensemble of simulations in which each member simulation artificially maintains the same time series of surface prognostic variables. Differences in atmospheric behavior between the ensemble members then indicates the degree to which the state of the land surface controls atmospheric processes in that model. A comparison of the four sets of experimental results shows that feedback strength does indeed vary significantly between the AGCMs. |
| File Size | 869168 |
| Page Count | 25 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010069259 |
| Archival Resource Key | ark:/13960/t6p03467h |
| Language | English |
| Publisher Date | 2001-01-01 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Atmospheric General Circulation Models Air Land Interactions Comparison Feedback Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
