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RISSimulation of Late Summer Arctic Clouds during ASCOS with Polar WRF
Publisher: American Meteorological Society
Abstract: ow-level clouds are extensive in the Arctic and contribute to inadequately understood feedbacks within the changing regional climate. The simulation of low-level clouds, including mixed-phase clouds, over the Arctic Ocean ...
Influence of Surface Drag on the Evolution of Fronts
Publisher: American Meteorological Society
Abstract: Surface frontal structure during cyclogenesis, and the sensitivity of this structure to surface friction, is examined. The approach is based on the analyses of simulations using a primitive equation model, with the domain ...
Frontogenesis Processes in the Middle and Upper Troposphere
Publisher: American Meteorological Society
Abstract: Basic issues regarding upper-level frontogenesis addressed in this paper are: (i) simulated frontogenesis influenced by the initial flow, (ii) upper-level frontogenesis as essentially a two-dimensional process, and (iii) ...
Development and Testing of Polar Weather Research and Forecasting (WRF) Model. Part I: Greenland Ice Sheet Meteorology
Publisher: American Meteorological Society
Abstract: A polar-optimized version of the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5) was developed to fill climate and synoptic needs of the polar science community ...
Wintertime Surface Winds over the Greenland Ice Sheet
Publisher: American Meteorological Society
Abstract: Clear-sky, wintertime surface winds over the Greenland Ice Sheet are simulated with a three-dimensional mesoscale numerical model. It is shown that the simulated winds blow from the broad gently sloped interior to the steep ...
Modeled Antarctic Precipitation. Part II: ENSO Modulation over West Antarctica
Publisher: American Meteorological Society
Abstract: The impacts of the El Niño?Southern Oscillation (ENSO) on the Antarctic region are of special importance in evaluating the variability and change of the climate system in high southern latitudes. In this study, the ENSO ...
Artificial Surface Pressure Trends in the NCEP–NCAR Reanalysis over the Southern Ocean and Antarctica
Publisher: American Meteorological Society
Abstract: An examination of 50 years of the National Centers for Environmental Prediction (NCEP)?National Center for Atmospheric Research (NCAR) reanalysis from 1949 to 1998 reveals that significant spurious trends occur in the ...
Simulating the Mutual Forcing of Anomalous High Southern Latitude Atmospheric Circulation by El Niño Flavors and the Southern Annular Mode
Publisher: American Meteorological Society
Abstract: umerical simulations using the National Center for Atmospheric Research Community Atmosphere Model (CAM) are conducted based on tropical forcing of El Niño flavors. Though these events occur on a continuum, two general ...
El Niño Flavors and Their Simulated Impacts on Atmospheric Circulation in the High Southern Latitudes
Publisher: American Meteorological Society
Abstract: wo El Niño flavors have been defined based on whether warm sea surface temperature (SST) anomalies are located in the central or eastern tropical Pacific (CP or EP). This study further characterizes the impacts on atmospheric ...
Surface Energy Balance of the NCEP MRF and NCEP–NCAR Reanalysis in Antarctic Latitudes during FROST
Publisher: American Meteorological Society
Abstract: The surface energy budget in Antarctic latitudes is evaluated for the medium-range numerical weather forecasts produced by the National Centers for Environmental Prediction (NCEP) and for the NCEP?National Center for ...