Search
CSV
RISMesoscale Convective Complexes and Persistent Elongated Convective Systems over the United States during 1992 and 1993
Publisher: American Meteorological Society
Abstract: Large, long-lived convective systems over the United States in 1992 and 1993 have been classified according to physical characteristics observed in satellite imagery as quasi-circular [mesoscale convective complex (MCC)] ...
Representation of Summertime Low-Level Jets in the Central United States by the NCEP–NCAR Reanalysis
Publisher: American Meteorological Society
Abstract: Reanalysis datasets that are produced by assimilating observations into numerical forecast models may contain unrealistic features owing to the influence of the underlying model. The authors have evaluated the potential ...
Mesoscale Convective Systems over the United States during the 1997–98 El Niño
Publisher: American Meteorological Society
Abstract: Large, long-lived mesoscale convective systems (MCSs) over the United States during the 1997?98 El Niño are documented. Two periods of abnormal MCS activity are identified in 1998: from March to mid-April an unusually large ...
Accuracy of 404-MHz Radar Profilers for Detection of Low-Level Jets over the Central United States
Publisher: American Meteorological Society
Abstract: The authors have evaluated the performance of operational hourly data from a NOAA Wind Profiler Network 404-MHz radar profiler for detecting low-level jet (LLJ) events in the central United States. Independent, collocated ...
An Alternative Mass Flux Profile in the Kain–Fritsch Convective Parameterization and Its Effects in Seasonal Precipitation
Publisher: American Meteorological Society
Abstract: The authors have altered the vertical profile of updraft mass flux detrainment in an implementation of the Kain?Fritsch2 (KF2) convective parameterization within the fifth-generation Pennsylvania State University?National ...
Idealized Mesoscale Convective System Structure and Propagation Using Convective Parameterization
Publisher: American Meteorological Society
Abstract: The development and propagation of mesoscale convective systems (MCSs) was examined within the Weather Research and Forecasting (WRF) model using the Kain?Fritsch (KF) cumulus parameterization scheme and a modified version ...
The Impact of Different Physical Parameterizations and Their Interactions on Cold Season QPF in the American River Basin
Publisher: American Meteorological Society
Abstract: The most significant precipitation events in California occur during the winter and are often related to synoptic-scale storms from the Pacific Ocean. Because of the terrain characteristics and the fact that the urban and ...
Bayesian Estimation of Stochastic Parameterizations in a Numerical Weather Forecasting Model
Publisher: American Meteorological Society
Abstract: Parameterizations in numerical models account for unresolved processes. These parameterizations are inherently difficult to construct and as such typically have notable imperfections. One approach to account for this ...
Short-Range Precipitation Forecasts from Time-Lagged Multimodel Ensembles during the HMT-West-2006 Campaign
Publisher: American Meteorological Society
Abstract: High-resolution (3 km) time-lagged (initialized every 3 h) multimodel ensembles were produced in support of the Hydrometeorological Testbed (HMT)-West-2006 campaign in northern California, covering the American River basin ...
Population Influences on Tornado Reports in the United States
Publisher: American Meteorological Society
Abstract: The number of tornadoes reported in the United States is believed to be less than the actual incidence of tornadoes, especially prior to the 1990s, because tornadoes may be undetectable by human witnesses in sparsely ...