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RISAn Analysis of the Kinetic Energy Budget for Two Extratropical Cyclones: The Vertically Averaged Flow and the Vertical Shear Flow
Publisher: American Meteorological Society
Abstract: An analysis of the kinetic energy budget is made for two intensely developing cyclones over North America. The principal kinetic energy source for the first cyclone is the net horizontal transport of kinetic energy across ...
Planetary Wave Coupling between the Troposphere and the Middle Atmosphere as a Possible Sun-Weather Mechanism
Publisher: American Meteorological Society
Abstract: The possibility of planetary wave coupling between the troposphere and solar-induced alterations in the upper atmosphere providing a viable mechanism for giving rise to sun-weather relationships is investigated. Some of ...
Systematic Errors in the Annual and Intraseasonal Variations of the Planetary-Scale Divergent Circulation in NMC Medium-Range Forecasts
Publisher: American Meteorological Society
Abstract: The systematic error in the National Meterological Center's (NMC) medium-range operational forecasts of the global divergence during 1987 and 1988 is examined in this study. As in other operational NWP models the NMC model ...
Radial Wind Super-Obs from the WSR-88D Radars in the NCEP Operational Assimilation System
Publisher: American Meteorological Society
Abstract: The spatial and temporal densities of Weather Surveillance Radar-1988 Doppler (WSR-88D) raw radar radial wind represent a rich source of high-resolution observations for initializing numerical weather prediction models. A ...
NOMADS: A Climate and Weather Model Archive at the National Oceanic and Atmospheric Administration
Publisher: American Meteorological Society
Abstract: An online archive of real-time and historical weather and climate model output and observationaldata is now available from the National Oceanic and Atmospheric Administration (NOAA). This archive, known asthe NOAA National ...
Variability and Predictability in an Empirically Forced Global Model
Publisher: American Meteorological Society
Abstract: Climatological and predictability features of a simplified moist general circulation model are described herein. The simplified model is driven by empirical forcings designed to eliminate systematic errors and maintain ...
The Effects of Divergent and Nondivergent Winds on the Kinetic Energy Budget of a Mid-Latitude Cyclone: A Case Study
Publisher: American Meteorological Society
Abstract: The magnitude of the divergent component of the wind is relatively small compared to that of the nondivergent component in large-scale atmospheric flows; nevertheless, it plays an important role in the case of explosive ...
Further Evaluation of the National Meterological Center's Medium-Range Forecast Model Precpitation Forecasts
Publisher: American Meteorological Society
Abstract: Precipitation forecasts made by the National Meteorological Center's medium-range forecast (MRF) model are evaluated for the period, 1 March 1987 to 31 March 1989. As shown by Roads and Maisel, the MRF model wet bias was ...
Forecast Advisory for a Cold-Season Heavy Rainfall/Flood Event That Developed from Multiple Interactions of the Cold-Surge Vortex with Cold-Surge Flows in the South China Sea
Publisher: American Meteorological Society
Abstract: he peak intensity occurrence frequency over the life cycles of parent cold-surge vortices (CSVs) for heavy rainfall/flood (HRF) events is classified into two types depending on their life cycles having two or three peak ...
Impact of the Summer Monsoon Westerlies on the South China Sea Tropical Cyclone Genesis in May
Publisher: American Meteorological Society
Abstract: fter the onset of the Southeast Asian summer monsoon in mid-May, the South China Sea (SCS) trough is deepened by the intensified monsoon westerlies to facilitate the development of a synoptic cyclonic shear flow. This shear ...