Diagnosis of the summertime warm and dry bias over the U. S. Southern Great Plains in the GFDL climate model using a weather forecasting approach
Weather forecasts started from realistic initial conditions are used to diagnose the large warm and dry bias over the United States Southern Great Plains simulated by the GFDL climate model. The forecasts exhibit biases in surface air temperature and precipitation within 3 days which appear to be similar to the climate bias. With the model simulating realistic evaporation but underestimated precipitation, a deficit in soil moisture results which amplifies the initial temperature bias through feedbacks with the land surface. The underestimate of precipitation is associated with an inability of the model to simulate the eastward propagation of convection from the front-range of the Rocky Mountains and is insensitive to an increase of horizontal resolution from 2{sup o} to 0.5{sup o} latitude.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 900082
- Report Number(s):
- UCRL-JRNL-222802; TRN: US200709%%374
- Journal Information:
- Geophysical Research Letters, vol. 33, N/A, September 22, 2006, Geophys. Res. Lett., 33, L18805, doi:10.1029/2006GL027567, Journal Name: Geophysical Research Letters, vol. 33, N/A, September 22, 2006, Geophys. Res. Lett., 33, L18805, doi:10.1029/2006GL027567
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Summertime Precipitation Bias in E3SM Atmosphere Model Version 1 over the Central United States
Land–Atmosphere Coupling at the U.S. Southern Great Plains: A Comparison on Local Convective Regimes between ARM Observations, Reanalysis, and Climate Model Simulations