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RISSensitivity of ECMWF Analyses-Forecasts of Tropical Cyclones to Cumulus Parameterization
Publisher: American Meteorological Society
Abstract: The sensitivity of the ECMWF analysis-forecast system for four tropical cyclones during the period spanned by the Australian Monsoon Experiment to cumulus parameterization and model resolution is presented. Two parameterization ...
The Use of Satellite Data in the Specification of Convective Heating for Diabatic Initialization and Moisture Adjustment in Numerical Weather Prediction Models
Publisher: American Meteorological Society
Abstract: Although diabatic processes play an important role in the tropical circulation, current analysis schemes and numerical weather prediction models are unable to adequately include diabatic heating information. In this paper, ...
Traveling Convective Storms over Venezuela
Publisher: American Meteorological Society
Abstract: The low-level atmospheric transformation associated with a class of traveling convective storms observed. over Venezuela is described. A strong low-level cooling is observed, confined mostly to the subcloud layer, and ...
An Example of Hurricane Tracking and Forecasting with a Global Analysis-Forecasting System
Publisher: American Meteorological Society
Abstract: The tracking of Hurricane Elena by the ECMWF operational analysis system is compared with reported positions from reconnaissance aircraft and coastal radar. An example forecast is shown for the operational model and also ...
Diagnosing the Origin of Extended-Range Forecast Errors
Publisher: American Meteorological Society
Abstract: Experiments with the ECMWF model are carried out to study the influence that a correct representation of the lower boundary conditions, the tropical atmosphere, and the Northern Hemisphere stratosphere would have on ...
The Sensitivity of the ECMWF Model to the Parameterization of Evaporation from the Tropical Oceans
Publisher: American Meteorological Society
Abstract: Stimulated by the results of a simple SST anomaly experiment with the ECMWF forecast model, a study was carried out to examine the model parameterization of evaporation from the tropica] oceans. In earlier versions of the ...
Modeling Interannual Variations of Summer Monsoons
Publisher: American Meteorological Society
Abstract: Results from a set of 90-day integrations, made with a T42 version of the ECMWF model and forced with a variety of specified sea surface temperature (SST) datasets, are discussed. Most of the integrations started from data ...
High-Resolution Global Climate Simulations with the ECMWF Model in Project Athena: Experimental Design, Model Climate, and Seasonal Forecast Skill
Publisher: American Meteorological Society
Abstract: he sensitivity to the horizontal resolution of the climate, anthropogenic climate change, and seasonal predictive skill of the ECMWF model has been studied as part of Project Athena?an international collaboration formed ...
Tropical and Subtropical Cloud Transitions in Weather and Climate Prediction Models: The GCSS/WGNE Pacific Cross-Section Intercomparison (GPCI)
Publisher: American Meteorological Society
Abstract: model evaluation approach is proposed in which weather and climate prediction models are analyzed along a Pacific Ocean cross section, from the stratocumulus regions off the coast of California, across the shallow convection ...