Radar Application in Weather Forecast EECS 725 Chao Jiang 05/01/2015.

Slides:

Advertisements

Similar presentations

Weather Forecasting: Part 2

Advertisements

Terry Schuur Weather Radar Research Meteorological Observations in Support of Dual Polarization Research.

NEXRAD or WSR-88D [Next Generation Radar] [Weather Surveillance Radar, 1988, Doppler]

7. Radar Meteorology References Battan (1973) Atlas (1989)

ATS 351 Lecture 9 Radar. Radio Waves Electromagnetic Waves Consist of an electric field and a magnetic field Polarization: describes the orientation.

X-band About the CSU-CHILL Radar The CSU-CHILL National Weather Radar Facility, located in Greeley, CO, is an advanced, transportable dual-polarized, dual-wavelength.

Echo Tops Fairly accurate at depicting height of storm tops Inaccurate data close to radar because there is no beam angle high enough to see tops. Often.

TRMM Tropical Rainfall Measurement (Mission). Why TRMM? n Tropical Rainfall Measuring Mission (TRMM) is a joint US-Japan study initiated in 1997 to study.

Rainfall Monitioring Using Dual-polarization Radars Alexander Ryzhkov National Severe Storms Laboratory / University of Oklahoma, USA.

Operational Weather Radar Featuring: WSR-88D Doppler Radar

New Concepts in Utilization of Polarimetric Weather Radars Alexander Ryzhkov (CIMMS) February 25–27, 2015 National Weather Center Norman, Oklahoma.

Colorado State University

Lecture 13: Precipitation W & H: Sections 6.4 and 6.5.

ASOS – Automated Surface Observing System. Why automate the surface observation? All models start with initial conditions. The most important initial.

Measuring Precipitation. How? Raingauges Radar Snow pillows Hail pads Precipitation patterns.

High-Resolution X-band Dual-Polarization Weather Radar: Theory and Applications Sense and Nonsense on precipitation and drop size distribution estimation.

Radar: Acronym for Radio Detection and Ranging

CASA – Collaborative Adaptive Sensing of the Atmosphere NWRT/PAR – National Weather Radar Testbed / Phased Array Radar Kurt D. Hondl DOC/NOAA/OAR National.

Doppler Radar From Josh Wurman Radar Meteorology M. D. Eastin.

Spaceborne Weather Radar

Weather Radar Radar - acronym for RADio Detection and Ranging

Basic RADAR Principles Prof. Sandra Cruz-Pol, Ph.D. Electrical and Computer Engineering UPRM.

Moonlight reflecting off ice crystals in cirrostratus clouds can cause a halo to appear around the moon. Such a halo often indicates that precipitation.

Spaceborne Radar for Snowfall Measurements

Precipitation & Storms. Target #24- I can identify the different types of precipitation Any moisture that falls from the air to earth’s surface is called.

Similar in concept to JDOP, except with the goal to operationally demonstrate the value of the polarimetric upgrade of the 88D. Multi-seasonal to study.

ELEMENTS of a RADAR SYSTEM

A Doppler Radar Emulator and its Application to the Detection of Tornadic Signatures Ryan M. May.

Phased Array Radar Configurations for Ground-Based and Airborne Deployments Dual Use: Deployable on airborne and ground-based platforms Key measurements:

Guided Notes on Gathering Weather Data

Satellite and Radar Imagery

Radars Sandra Cruz-Pol Professor Electrical and Computer Engineering Department University of Puerto Rico at Mayagüez CASA- Collaborative Adaptive Sensing.

Weather Maps and Atmospheric Effects. Fronts Humidity.

METR February Radar Basics RADAR - acronym for RAdio Detection And Ranging; a radio device or system for locating an object by means of ultrahigh-frequency.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Precipitation Chapter 23 Objectives Identify the four forms.

Weather Predicting Weather forecasting is a prediction of what the weather will be like in an hour, tomorrow, or next week. Weather forecasting involves.

Chapter 5 Observing the Atmosphere ATMO 1300 SPRING 2010.

–thermometer –barometer –anemometer –hygrometer Objectives Recognize the importance of accurate weather data. Describe the technology used to collect.

Read. Answer the following in your notebook:  What type of pressure systems produce hurricanes, tornadoes, and winter weather storms?  What things do.

RAdio Detection And Ranging. Was originally for military use 1.Sent out electromagnetic radiation (Active) 2.Bounced off an object and returned to a listening.

Where are the radars located? What is the radar coverage?

1 Development Of Space-borne Rain Radar In China: The First Results From Airborne Dual- Frequency Rain Radar Field Campaign Hu Yang, Honggang Yin, Jian.

Dual-Polarization and Dual-Wavelength Radar Measurements Vivek National Center for Atmospheric Research Boulder, Colorado I.Polarization and dual- wavelength.

Water in the Atmosphere Section 3 Section 3: Precipitation Preview Key Ideas Forms of Precipitation Causes of Precipitation Measuring Precipitation Weather.

EumetCal Examples.

Next Week: QUIZ 1 One question from each of week: –5 lectures (Weather Observation, Data Analysis, Ideal Gas Law, Energy Transfer, Satellite and Radar)

Atmospheric InstrumentationM. D. Eastin Fundamentals of Doppler Radar Mesocyclone WER Hook Echo Radar ReflectivityRadar Doppler Velocities.

RADAR METEOROLOGY Courtney Schumacher Texas A&M University ATMO 352.

What does radar measure? Hydrometeors: rain drops, ice particles Other objects: e.g. birds, insects.

Weather Radars in the US ---- An Overview and Their Applications Cai Huaqing National Center for Atmospheric Research Boulder, CO.

Clouds and Precipitation

Radar Requirements David J. Stensrud NOAA/National Severe Storms Laboratory 2013 Warn-on-Forecast Workshop and Technical Guidance Meetings.

Lecture 8 (10/28) METR 1111 Radars. Radar & its History RADAR is an acronym Stands for RAdio Detecting And Ranging In 1930’s, radar used to monitor shipping.

Read. Answer the following in your notebook:  What type of pressure systems produce hurricanes, tornadoes, and winter weather storms?  What things do.

Pam Heinselman Weather Radar Research Evaluation of Phased Array Radar Data via Comparisons to the WSR-88D.

JMA Japan Meteorological Agency QPE/QPF of JMA Application of Radar Data Masashi KUNITSUGU Head, National Typhoon Center Japan Meteorological Agency TYPHOON.

1 A conical scan type spaceborne precipitation radar K. Okamoto 1),S. Shige 2), T. Manabe 3) 1: Tottori University of Environmental Studies, 2: Kyoto University.

High-Resolution Polarimetric Radar Observation of Snow- Generating Cells Karly Reimel May 10, 2016.

BENT 4343 RADIO NAVIGATION SYSTEM Dr. Ho Yih Hwa Room: A3/37 Tel:

Water in the Atmosphere Section 3 Section 3: Precipitation Preview Key Ideas Forms of Precipitation Causes of Precipitation Measuring Precipitation Weather.

Radar Interpretation Chad Entremont National Weather Service Jackson, MS.

B) Secondary RADAR Secondary Radar is always known as Secondary Surveillance Radar (SSR). SSR is complement to the primary radar as it provide ATC with.

Chap IV. Fundamentals of Radar Beam propagation

Paper Review Jennie Bukowski ATS APR-2017

Radar Observation of Severe Weather

Lecture 6 RADAR Part II.

Alejandro López Ontavilla

Free Powerpoint Templates

Spaceborne Radar for Snowfall Measurements

Presentation transcript:

Radar Application in Weather Forecast EECS 725 Chao Jiang 05/01/2015

Radar Application in Weather Forecast Introduce to Weather Radar Typical Weather Radar Specification Limitation and Future Development

Weather Radar Most of the weather radars are monostatic radars. Capable of detecting location of precipitation, calculating the motion of rain droplets, and its intensity. Usually operates in S-band and C-band. X-band weather radar is used only to detect nearby target, and Ka-band is used to research small-particle phenomenon. Ground, Airborne, and Spaceborne.

Introduce to WSR-88D Weather Radar WSR-88D Network (160 Radars), operated by National Weather Service Deployed across the US in the 1990s. Was the first radar able to detect particle motions. Operates in S-band (Frequency: 3.1 GHz; wavelength: 10.5 cm)

Basic Structure

Dual-polarization

Differentiating Rain and Snow. Detecting Hail Cores. Debris from Significant Tornadoes.

Limitations (Beam Height) Due to the curvature of the Earth.

Limitations (Beam Height)

Limitations (Attenuation) Occurs when large objects scatter most of the microwave. Makes the storms behind the large object appear weaker

Limitations (PRF constraints) PRF min = 2 Δf D PRF max = c/2R max Multiple scans at each angle Change PRF at the radar depending on the situation

Future development (Phased Array) Consists of four stationary panels. Providing rapid scanning. Able to scan the sky in less than 1 minutes (more than 4 times faster than WSR-88D). Making the observation more accurate and reduce false alarms.

Phased Array Radar in Norman, Oklahoma

Reference