Velocity-Azimuth Display Analysis of Doppler Velocity for HIWRAP

  title={Velocity-Azimuth Display Analysis of Doppler Velocity for HIWRAP},
  author={Lin Tian and Gerald M. Heymsfield and Anthony C. Didlake and Stephen R. Guimond and Lihua Li},
  journal={Journal of Applied Meteorology and Climatology},
AbstractThe velocity–azimuth display (VAD) analysis technique established for ground-based scanning radar is applied to the NASA High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP). The VAD technique provides a mean vertical profile of the horizontal winds for each complete conical scan of the HIWRAP radar. One advantage of this technique is that it has shown great value for data assimilation and for operational forecasts. Another advantage is that it is computationally inexpensive… 

First Spaceborne Version of Velocity-Azimuth Display Technique for Wind Field Retrieval on Cloud and Precipitation Radar

Cloud and precipitation radar mounted on a polar orbiting satellite opens up a new opportunity for global wind observation to improve numerical weather forecasting and prevent weather disasters.

Relationship between Horizontal Wind Velocity and Normalized Surface Cross Section Using Data from the HIWRAP Dual-Frequency Airborne Radar

The High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) dual-frequency conically scanning airborne radar provides estimates of the range-profiled mean Doppler and backscattered power from

Novel Scanning Strategy for Future Spaceborne Doppler Weather Radar With Application to Tropical Cyclones

A novel scanning strategy for future spaceborne Doppler weather radar mission to retrieve 3-D wind fields of TCs, which has three downward-pointing (with three different fixed tilt angles) and conically scanning beams, is presented and optimized to construct three noncollinear radar observations.

Review of Lidar-Based Applications for Aviation Weather

Measurements collected by Leosphere Doppler lidars were reviewed to study meteorological processes such as wind shear, wind profiles, gust fronts, and wake vortices over airports. First, the basic

An LES-based airborne Doppler lidar simulator for investigation of wind profiling in inhomogeneous flow conditions

Abstract. Wind profiling by Doppler lidar is common practice and highly useful in a wide range of applications. Airborne observations can provide additional insights to ground-based systems by

An LES-based airborne Doppler lidar simulator and its application to wind profiling in inhomogeneous flow conditions

Abstract. Wind profiling by Doppler lidar is common practice and highly useful in a wide range of applications. Airborne Doppler lidar can provide additional insights relative to ground-based systems

Concentric Eyewall Asymmetries in Hurricane Gonzalo (2014) Observed by Airborne Radar

AbstractTwo eyewall replacement cycles were observed in Hurricane Gonzalo by the NOAA P3 Tail (TA) radar and the recently developed NASA High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP)

An Automatic Recognition Method for Airflow Field Structures of Convective Systems Based on Single Doppler Radar Data

Airflow structures within convective systems are important predictors of damaging convective disasters. To automatically recognize different kinds of airflow structures (the convergence, divergence,

Investigating Axisymmetric and Asymmetric Signals of Secondary Eyewall Formation Using Observations‐Based Modeling of the Tropical Cyclone Boundary Layer

This study examines axisymmetric and asymmetric aspects of secondary eyewall formation (SEF) in tropical cyclones (TCs) by applying a nonlinear boundary layer model to tangential wind composites of

Sensing Hazards with Operational Unmanned Technology : impact study of Global Hawk unmanned aircraft system observations for hurricane forecasting, final report

....................................................................................................................................... xx



The Coplane Analysis Technique for Three-Dimensional Wind Retrieval Using the HIWRAP Airborne Doppler Radar

AbstractThe coplane analysis technique for mapping the three-dimensional wind field of precipitating systems is applied to the NASA High-Altitude Wind and Rain Airborne Profiler (HIWRAP). HIWRAP is a

An Improved Version of the Extended Velocity-Azimuth Display Analysis of Single-Doppler Radar Data

Abstract Extended velocity-azimuth display (EVAD) analysis is useful for obtaining vertical profiles of horizontal divergence, vertical air velocity, vertical hydrometer velocity, and hydrometeor

A Method for Retrieving Mean Horizontal Wind Profiles from Single-Doppler Radar Observations Contaminated by Aliasing

The velocity–azimuth display (VAD) technique was designed to estimate the areal mean vertical profile of the horizontal wind above a ground-based Doppler radar. The method uses radial velocity

Multi-beam techniques for deriving wind fields from airborne doppler radars

SummaryTwo techniques for deriving horizontal and vertical air motions using vertically scanning airborne Doppler radar data are presented and discussed. These techniques make use of the scanning

Wind Retrieval Algorithms for the IWRAP and HIWRAP Airborne Doppler Radars with Applications to Hurricanes

AbstractAlgorithms for the retrieval of atmospheric winds in precipitating systems from downward-pointing, conically scanning airborne Doppler radars are presented. The focus is on two radars: the

Doppler Radar Study of the Trailing Anvil Region Associated with a Squall Line

Abstract The kinematic structure and reflectivity distribution within a region of widespread precipitation associated with a summertime midlatitude (Illinois) squall line, as revealed by an analysis

The EDOP Radar System on the High-Altitude NASA ER-2 Aircraft

Abstract The NASA ER-2 high-altitude (20 km) aircraft that emulates a satellite view of precipitation systems carries a variety of passive and active (lidar) remote sensing instruments. A new Doppler

Airborne Radar Observations of Severe Hailstorms: Implications for Future Spaceborne Radar

AbstractA new dual-frequency (Ku and Ka band) nadir-pointing Doppler radar on the high-altitude NASA ER-2 aircraft, called the High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP), has

Ensemble Kalman Filter Assimilation of Simulated HIWRAP Doppler Velocity Data in a Hurricane

AbstractThis study utilizes ensemble Kalman filter (EnKF) observing system simulation experiments (OSSEs) to analyze the potential impact of assimilating radial velocity observations of hurricanes

A Procedure to Correct Airborne Doppler Radar Data for Navigation Errors Using the Echo Returned from the Earth's Surface

Abstract The development of airborne Doppler radars for atmospheric sciences research has vastly improved the ability to measure atmospheric storms. This paper addresses a new technique for improving