HR: 1400h
AN: A23A-08    [Abstracts]
TI: Evaluation of soil moisture in the Florida State University climate model-National Center for Atmospheric Research community land model (FSU-CLM) using two reanalyses (R2 and ERA40) and in situ observations
AU: * boisserie, m
EM: marie@coaps.fsu.edu
AF: coaps, Florida State University, 2035 E. Paul Dirac Dr., Tallahassee, FL 32306-2840, tallahassee, fl 32306-2840, United States
AB: The simulated soil moisture from the Florida State University/Center of Ocean and Atmosphere Prediction Studies (FSU/COAPS) global spectral model coupled to the National Center for Atmospheric Research community land model (CLM2) is evaluated using two reanalyses (the European Centre for Medium-Range Weather Forecasts 40-year Reanalysis (ERA40) and the National Centers for Environmental Prediction/Department of Energy Reanalysis 2 (R2)) and in situ observations in Illinois and China from the Global Soil Moisture Data Bank. While the soil moisture was prescribed in the previous FSU/COAPS model, the implementation of the CLM2 within the FSU/COAPS (hereafter FSU-CLM) provides a prognostic soil moisture (both soil liquid water and soil ice) in 10 vertical layers. For the first layer (0-10 cm) the comparison of the soil moisture annual cycle between the FSU-CLM and the two reanalyses shows that in the Northern Hemisphere (NH) the FSU-CLM and the ERA40 are in phase but they are out of phase with the R2. While a parameterization of the soil ice process is included in both the FSU-CLM and ERA40, it is not included in the R2. In this study, we found that the soil ice plays a key role in determining the soil moisture variation over the NH. The two reanalyses and the FSU-CLM are also compared with in situ observations. The FSU-CLM turns out to follow the annual cycle of the in situ observations better than both reanalyses.
UR: http:www.coaps.fsu.edu/~marie
DE: 1866 Soil moisture
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly