Table of Contents

RAP Annual Scientific Report 1999

• I. INTRODUCTION
  • A. Mission
  • B. Historical Perspective
  • C. Approach to Technology Transfer
  • D. Strategic Goals

• II. MOST SIGNIFICANT ACHIEVEMENTS DURING 1999
  • A. Meso-gamma Scale Prediction System Operational at Three Army Test Ranges
  • B. Mount Washington Icing Sensors Project (MWISP)
  • C. Development and Implementation of Aviation Digital Data System (ADDS)
  • D. Transfer of Weather Support to Deicing Decision Making (WSDDM) System to ARINC
  • E. Buffalo Creek Flash Flood Prediction Studies Using Radar, TITAN, 4DVAR, and MM5 Mesoscale Model Coupled to a Runoff Model

• III. MAJOR SCIENTIFIC ACHIEVEMENTS IN RAP DURING 1999
  • A. In-Cloud Icing
    • 1. Background
    • 2. Integrated Icing Diagnostic Algorithm (IIDA)
    • 3. MWISP -- The Mt. Washington Icing Sensors Project
    • 4. Predicting Glaze or Rime Ice Growth on Airfoils
    • 5. Freezing Rain as an In-Flight Icing Hazard
    • 6. Development of a New Method to Estimate Cloud Droplet Size and Liquid Water Content Using Dual Frqequency Radar
    • 7. Testing New Icing Nucleation Curves in Detailed and Bulk Microphysical Model Parameterizations
    • 8. Regional Verification of Icing Forecasts
  • B. Snowfall and Freezing Precipitation
    • Background
      • 1. Evaluation of the Effect of Wind on the Performance of Snowgauges
      • 2. Evaluation of ASOS Instrumentation to Detect and Measure Winter Precipitation
      • 3. Artificial Snowmaking Machine
  • C. Convective Weather Forecasting
    • 1. Background
    • 2. FY 99 Field Deployments
    • 3. Thunderstorm Auto-nowcaster Sytem
    • 4. National Convective Forecast Product
  • D. Atmospheric Turbulence
    • 1. Background
    • 2. In Situ Turbulence Measurement
    • 3. Terrain-induced Turbulence
    • 4. Turbulence Forecasting
    • 5. Remote Sensing of Turbulence
    • 6. Northeast Colorado Turbulence Field Program
    • 7. Verification of Clear-Air Turbulence Forecasts
  • E. Numerical Weather Prediction
    • 1. Background
    • 2. Development and Testing of an Improved Land-Surface Modeling System for Mesoscale Models
    • 3. Development of Operational Mesogamma-scale Numerical Weather Prediction Systems for Army Test Ranges
    • 4. Use of the Penn State/NCAR MM5 Modeling System for Production of a Mesogamma-scale Re-analysis of Meteorological Conditions during the Gulf War
    • 5. Nested-model Simulation of Moist Convection: The Impact of Coarse-grid Parameterized Convection on Fine-grid Resolved Convection
    • 6. A High-Wind Event in Complex Topography: Comparison of Numerical Simulations with Observations
    • 7. Ensemble Atmospheric Dispersion Simulations Employing a Coupled Atmospheric Dynamic Model and a Dispersion Model
    • 8. Explicit Simulation of Convection over Complex Terrain, and its Sensitivity to the Land-Surface Specification
  • F. Water Resources
    • 1. Background
    • 2. An Evaluation of Model- and Radar-based Convective Precipitation Estimates for Use in Runoff-model Predictions of Flash Floods in Complex Terrain
    • 3. Water Resource Assessment of the Potential Enhancement of Precipitation in the State of Durango, Mexico
  • G. Modeling of Land-Surface Processes and Its Application to Numerical Weather Forecasts
    • 1. Background
    • 2. Validating/Improving Land-Surface Models with CASES-97 Data
    • 3. Improving the Parameterization Scheme of the Atmospheric Surface Layer
    • 4. Applying the Coupled Model System to Forecast the 1996 Buffalo Creek Flash Flood
  • H. Remote Sensing of Precipitation
    • 1. Background
    • 2. Recent Achievements
  • I. Analysis of Precipitation Enhancement Potential
    • 1. Background
    • 2. Program for the Augmentation of Precipitation in Coahuila (Mexico) - PARC
    • 3. The Durango Rainfall Induction Program (DRIP)

• IV. TECHNOLOGY TRANSFER ACTIVITIES
  • A. Taiwan Advanced Operational Aviation Weather System (AOAWS)
  • B. Transfer of the Integrated Turbulence Forecasting Algorithm (ITFA) to the NWS Aviation Weather Center in Kansas City
  • C. 4DWX Technology Transfers
  • D. Weather Information in the Cockpit
  • E. Initial National Convective Forecast Product Transferred to Aviation Weather Center
  • F. Thunderstorm Auto-Nowcast System
  • G. Technology Transfer of ADDS to the NWS Aviation Weather Center in Kansas City
  • H. Technology Transfer of the Weather Support to Deicing Decision Making System to ARINC
  • I. Transfer of Algorithm for Instrument Approaches near Precipitous Terrain to the FAA

• V. STAFF AND VISITORS

• VI. 1999 RAP PUBLICATIONS
  • Refereed
  • Unrefereed