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RISComparative Study of Various Formulations of Evaporations from Bare Soil Using In Situ Data
Publisher: American Meteorological Society
Abstract: Vajious formulations of surface evaporation are tested against in situ data collected over a plot of loamy bare ground. Numerical simulations lasting seven days are compared with observations of near-surface water content ...
Inclusion of Gravitational Drainage in a Land Surface Scheme Based on the Force-Restore Method
Publisher: American Meteorological Society
Abstract: This paper presents a simple parameterization of gravitational drainage for land surface schemes describing soil water transfers according to the force-restore method of Deardorff. A one-year time series of observed soil ...
Sequential Assimilation of Soil Moisture from Atmospheric Low-Level Parameters. Part I: Sensitivity and Calibration Studies
Publisher: American Meteorological Society
Abstract: This paper and its companion report on the development of a sequential assimilation technique based upon optimum interpolation in order to initialize soil moisture in atmospheric models. A previous study by Mahfouf has ...
Sequential Assimilation of Soil Moisture from Atmospheric Low-Level Parameters. Part II: Implementation in a Mesoscale Model
Publisher: American Meteorological Society
Abstract: A sequential assimilation technique based upon optimum interpolation is developed to initialize soil moisture in atmospheric models. Soil moisture increments are linearly related to forecast errors of near-surface atmospheric ...
A Land Data Assimilation System for Soil Moisture and Temperature: An Information Content Study
Publisher: American Meteorological Society
Abstract: A Canadian Land Data Assimilation System (CaLDAS) for the analysis of land surface prognostic variables is designed and implemented at the Meteorological Service of Canada for the initialization of numerical weather ...
One-Dimensional Variational Data Assimilation of SSM/I Observations in Rainy Atmospheres at MSC
Publisher: American Meteorological Society
Abstract: Currently, satellite radiances in the Canadian Meteorological Centre operational data assimilation system are only assimilated in clear skies. A two-step method, developed at the European Centre for Medium-Range Weather ...
A Global Root-Zone Soil Moisture Analysis Using Simulated L-band Brightness Temperature in Preparation for the Hydros Satellite Mission
Publisher: American Meteorological Society
Abstract: The aim of this study is to test a land data assimilation prototype for the production of a global daily root-zone soil moisture analysis. This system can assimilate microwave L-band satellite observations such as those ...
The Land Surface Scheme ISBA within the Météo-France Climate Model ARPEGE. Part I. Implementation and Preliminary Results
Publisher: American Meteorological Society
Abstract: This paper describes recent developments in climate modeling at Météo-France related to land surface processes. The implementation of a simple land surface parameterization, Interactions between Soil Biosphere Atmosphere ...
A Comparative Study of Various Parameterizations of the Planetary Boundary Layer in a Numerical Mesoscale Model
Publisher: American Meteorological Society
Abstract: Various parameterizations of the planetary boundary layer (PBL) currently used in three-dimensional (3D) mesoscale models are compared with a more complex scheme including a turbulent kinetic energy (TKE) equation. In the ...
The Usage of Screen-Level Parameters and Microwave Brightness Temperature for Soil Moisture Analysis
Publisher: American Meteorological Society
Abstract: This study focuses on testing two different soil moisture analysis systems based on screen-level parameters (2-m temperature T2m, 2-m relative humidity RH2m) and 1.4-GHz passive microwave brightness temperatures TB. First, ...