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RISA Study of Aerosol Impacts on Clouds and Precipitation Development in a Large Winter Cyclone
Publisher: American Meteorological Society
Abstract: erosols influence cloud and precipitation development in complex ways due to myriad feedbacks at a variety of scales from individual clouds through entire storm systems. This paper describes the implementation, testing, ...
Explicit Forecasts of Winter Precipitation Using an Improved Bulk Microphysics Scheme. Part I: Description and Sensitivity Analysis
Publisher: American Meteorological Society
Abstract: This study evaluates the sensitivity of winter precipitation to numerous aspects of a bulk, mixed-phase microphysical parameterization found in three widely used mesoscale models [the fifth-generation Pennsylvania State ...
Using Satellite Data to Reduce Spatial Extent of Diagnosed Icing
Publisher: American Meteorological Society
Abstract: Overprediction of the spatial extent of aircraft icing is a major problem in forecaster products based on numerical model output. Dependence on relative humidity fields, which are inherently broad and smooth, is the cause ...
Volcanic Aerosol Impacts on Hawai‘i Island Rainfall
Publisher: American Meteorological Society
Examination of Mixed-Phase Precipitation Forecasts from the High-Resolution Rapid Refresh Model Using Surface Observations and Sounding Data
Publisher: American Meteorological Society
Abstract: ccurate prediction of mixed-phase precipitation remains challenging for numerical weather prediction models even at high resolution and with a sophisticated explicit microphysics scheme and diagnostic algorithm to designate ...
A New Perspective on Coastally Trapped Disturbances Using Data from the Satellite Era
Publisher: American Meteorological Society
Abstract: AbstractThe ability of global climate models to simulate accurately marine stratiform clouds continues to challenge the atmospheric science community. These cloud types, which account for a large uncertainty in Earth?s ...
Aggregate Terminal Velocity/Temperature Relations
Publisher: American Meteorological Society
Abstract: Terminal velocities of snow aggregates in storms along the Front Range in eastern Colorado are examined with a ground-based two-dimensional video disdrometer. Power-law relationships for particles having equivalent volume ...
Observations of Freezing Drizzle in Extratropical Cyclonic Storms during IMPROVE-2
Publisher: American Meteorological Society
Abstract: Observations of supercooled drizzle aloft within two storms impacting the Oregon Cascades during the second Improvement of Microphysical Parameterization through Observational Verification Experiment (IMPROVE-2) field ...
Real-Time Mesoscale Prediction on workstations
Publisher: American Meteorological Society
Abstract: Experience in performing real-time mesoscale numerical prediction forecasts using the Regional Atmospheric Modeling System (RAMS) over Colorado for a winter season on high-performance workstations is summarized. Performance ...
High-Resolution Simulations of Wintertime Precipitation in the Colorado Headwaters Region: Sensitivity to Physics Parameterizations
Publisher: American Meteorological Society
Abstract: n investigation was conducted on the effects of various physics parameterizations on wintertime precipitation predictions using a high-resolution regional climate model. The objective was to evaluate the sensitivity of ...