Weather and Forecasting: Recent submissions
Now showing items 2101-2120 of 3043
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Automated Detection of the Bright Band Using WSR-88D Data
(American Meteorological Society, 2003)During stratiform precipitation, hydrometeors within the melting layer increase backscatter to radar. This layer can persist at a nearly constant height for hours and can lead to serious radar-based overestimates in ... -
Nowcasting Storm Initiation and Growth Using GOES-8 and WSR-88D Data
(American Meteorological Society, 2003)The evolution of cumulus clouds over a variety of radar-detected, boundary layer convergence features in eastern Colorado has been examined using Geostationary Operational Environmental Satellite (GOES) imagery and Weather ... -
NCAR Auto-Nowcast System
(American Meteorological Society, 2003)The Auto-Nowcast System (ANC), a software system that produces time- and space-specific, routine (every 5 min) short-term (0?1 h) nowcasts of storm location, is presented. A primary component of ANC is its ability to ... -
Reply
(American Meteorological Society, 2003) -
Comments on “Use of a Mesoscale Model to Forecast Severe Weather Associated with a Cold Front Aloft”
(American Meteorological Society, 2003) -
Short-Range Prediction of Tropospheric Ozone Concentrations and Exceedances for Baton Rouge, Louisiana
(American Meteorological Society, 2003)Previous research has been focused on improving forecasts of the daily maximum 1-h concentration of tropospheric ozone, which was based on criteria used by the U.S. Environmental Protection Agency (EPA). However, in 2001, ... -
Shear Parameter Thresholds for Forecasting Tornadic Thunderstorms in Northern and Central California
(American Meteorological Society, 2003)A study of 39 nontornadic and 30 tornadic thunderstorms (composing 25 tornado ?events,? as defined in the text) that occurred in northern and central California during the period 1990?94 shows that stratification of the ... -
Environmental Vertical Wind Shear with Hurricane Bertha (1996)
(American Meteorological Society, 2003)Hurricane Bertha (1996) was influenced by vertical wind shear with highly variable direction and magnitude. The paper describes a unique method for determining the vertical tilt of a tropical cyclone vortex using satellite ... -
Numerical Modeling of an Orographically Enhanced Precipitation Event Associated with Tropical Storm Rachel over Taiwan
(American Meteorological Society, 2003)An orographic rainfall event that occurred on 6?7 August 1999 during the passage of Tropical Storm (TS) Rachel over Taiwan is investigated by performing triply nested, nonhydrostatic numerical simulations using the Naval ... -
Improvement of Long-Range Forecasting by EEOF Extrapolation Using an AR-MEM Model
(American Meteorological Society, 2003)This paper presents an optimum combination of two robust statistical techniques that can be used to improve the skill of long-range weather forecasts. The first method uses decomposition and analysis based on extended ... -
An Adaptive Nonlinear MOS Scheme for Precipitation Forecasts Using Neural Networks
(American Meteorological Society, 2003)A novel neural network (NN)?based scheme performs nonlinear model output statistics (MOS) for generating precipitation forecasts from numerical weather prediction (NWP) model output. Data records from the past few weeks ... -
The Canadian Updateable Model Output Statistics (UMOS) System: Validation against Perfect Prog
(American Meteorological Society, 2003)This paper describes validation tests of the Canadian Updateable Model Output Statistics (UMOS) system against the perfect prognosis forecast system and forecasts of weather elements from the operational numerical weather ... -
Improving Snowfall Forecasting by Diagnosing Snow Density
(American Meteorological Society, 2003)Current prediction of snowfall amounts is accomplished either by using empirical techniques or by using a standard modification of liquid equivalent precipitation such as the 10-to-1 rule. This rule, which supposes that ... -
Mesoscale Model Simulations of High-Wind Events in the Complex Terrain of Western Nevada
(American Meteorological Society, 2003)The fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model (MM5) has been used to simulate high-wind events in the complex terrain of western Nevada. The objective was to ... -
Synoptic-Scale Controls on the Sea Breeze of the Central New England Coast
(American Meteorological Society, 2003)Using routinely available hourly surface observations and United States surface analyses for 2001, a method was developed for predicting sea-breeze events. The method is adaptable to any coastal region in the world where ... -
An Unexpectedly Heavy and Complex Snowfall Event across the Southern Appalachian Region
(American Meteorological Society, 2003)On 26 March 1999, an unexpectedly heavy and complex snowfall event occurred across the southern Appalachian region. This event produced 20?30 cm (8?12 in.) of snow across the Smoky Mountains and 10?15 cm (4?6 in.) across ... -
Annular Hurricanes
(American Meteorological Society, 2003)This study introduces and examines a symmetric category of tropical cyclone, which the authors call annular hurricanes. The structural characteristics and formation of this type of hurricane are examined and documented ... -
ADWICE: Advanced Diagnosis and Warning System for Aircraft Icing Environments
(American Meteorological Society, 2003)This paper describes the design of the Advanced Diagnosis and Warning System for Aircraft Icing Environments (ADWICE) and presents results for two different icing weather situations with typical icing conditions. ADWICE ... -
Comparative Verification of Recent Quantitative Precipitation Forecasts in the National Weather Service: A Simple Approach for Scoring Forecast Accuracy
(American Meteorological Society, 2003)Comparative verification of operational 6-h quantitative precipitation forecast (QPF) products used for streamflow models run at National Weather Service (NWS) River Forecast Centers (RFCs) is presented. The QPF products ... -
Performance of Weather Forecast Models in the Rescue of Dr. Ronald Shemenski from the South Pole in April 2001
(American Meteorological Society, 2003)In late April 2001, an unprecedented late-season flight to Amundsen?Scott South Pole Station was made in the evacuation of Dr. Ronald Shemenski, a medical doctor seriously ill with pancreatitis. This case study analyzes ...