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RISScale-Selective Verification of Rainfall Accumulations from High-Resolution Forecasts of Convective Events
Publisher: American Meteorological Society
Abstract: The development of NWP models with grid spacing down to ?1 km should produce more realistic forecasts of convective storms. However, greater realism does not necessarily mean more accurate precipitation forecasts. The rapid ...
Impact of Data Assimilation on Forecasting Convection over the United Kingdom Using a High-Resolution Version of the Met Office Unified Model
Publisher: American Meteorological Society
Abstract: A high-resolution data assimilation system has been implemented and tested within a 4-km grid length version of the Met Office Unified Model (UM). A variational analysis scheme is used to correct larger scales using ...
Effects of Initial and Boundary Conditions of Mesoscale Models on Simulated Atmospheric Refractivity
Publisher: American Meteorological Society
Abstract: adar ducting is caused by sharp vertical changes in temperature and, especially, water vapor at the top of the atmospheric boundary layer, both of which are sensitive to variations in the underlying surface conditions, ...
Combination of Mesoscale and Synoptic Mechanisms for Triggering an Isolated Thunderstorm: Observational Case Study of CSIP IOP 1
Publisher: American Meteorological Society
Abstract: An isolated thunderstorm formed in the southern United Kingdom on 15 June 2005 and moved through the area where a large number of observational instruments were deployed as part of the Convective Storm Initiation Project. ...
The Surprising Role of Orography in the Initiation of an Isolated Thunderstorm in Southern England
Publisher: American Meteorological Society
Abstract: Many factors, both mesoscale and larger scale, often come together in order for a particular convective initiation to take place. The authors describe a modeling study of a case from the Convective Storms Initiation Project ...
Convective-Scale Perturbation Growth across the Spectrum of Convective Regimes
Publisher: American Meteorological Society
Abstract: AbstractConvection-permitting ensembles have led to improved forecasts of many atmospheric phenomena. However, to fully utilize these forecasts the dependence of predictability on synoptic conditions needs to be understood. ...
Characteristics of Diagnostics for Identifying Elevated Convection over the British Isles in a Convection-Allowing Model
Publisher: American Meteorological Society
Characteristics of High-Resolution Versions of the Met Office Unified Model for Forecasting Convection over the United Kingdom
Publisher: American Meteorological Society
Abstract: With many operational centers moving toward order 1-km-gridlength models for routine weather forecasting, this paper presents a systematic investigation of the properties of high-resolution versions of the Met Office Unified ...
The DYMECS Project: A Statistical Approach for the Evaluation of Convective Storms in High-Resolution NWP Models
Publisher: American Meteorological Society
Abstract: A new frontier in weather forecasting is emerging by operational forecast models now being run at convection-permitting resolutions at many national weather services. However, this is not a panacea; significant systematic ...
The Three-Dimensional Morphology of Simulated and Observed Convective Storms over Southern England
Publisher: American Meteorological Society
Abstract: set of high-resolution radar observations of convective storms has been collected to evaluate such storms in the Met Office Unified Model during the Dynamical and Microphysical Evolution of Convective Storms (DYMECS) ...