Kenneth H. Underwood Atmospheric Systems Corporation Santa Clarita, CA NAQC 2011 San Diego1.

Slides:

Advertisements

Similar presentations

Snodar (Surface layer NOn-Doppler Acoustic Radar) A new instrument to measure the height of the Atmospheric boundary layer on the Antarctic plateau. Colin.

Advertisements

Specular reflectorquasi-specular reflector quasi-Lambert reflector Lambert reflector Limiting Forms of Reflection and Scatter from a Surface.

Microscale structure of air ion spatial and temporal distribution: some problems Hyytiälä

Extracting Energy from Wind Matt Aldeman Senior Energy Analyst Center for Renewable Energy Illinois State University.

EM Wave Source Object Re-radiated EM field ???. GeneratorTransmission Line Dipole Antenna free space wave uniform traveling wave reflected traveling wave.

Some Measurement Issues for Urban Test Beds R. P. Hosker, Jr. NOAA / OAR / ARL Atmospheric Turbulence & Diffusion Division Oak Ridge, TN USA.

Lecture 12 Content LIDAR 4/15/2017 GEM 3366.

Specular reflectorquasi-specular reflector quasi-Lambert reflector Lambert reflector Limiting Forms of Reflection and Scatter from a Surface.

A Lagrangian approach to droplet condensation in turbulent clouds Rutger IJzermans, Michael W. Reeks School of Mechanical & Systems Engineering Newcastle.

Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. The wave model Sinusoidal waves Sound and light waves Energy & Intensity.

1 Sinusoidal Waves The waves produced in SHM are sinusoidal, i.e., they can be described by a sine or cosine function with appropriate amplitude, frequency,

Radio Acoustic Sounding System Preliminary Design Review by Elisabeth Bobrow, Edward Breen, Wisnel Lorzeille, and Daniel Oren.

How can we get a vertical profile of the wind in the atmosphere?

© 2010 Pearson Education, Inc. Slide Traveling Waves and Sound.

METO 637 Lesson 13. Air Pollution The Troposphere In the Stratosphere we had high energy photons so that oxygen atoms and ozone dominated the chemistry.

How can we get a vertical profile of the atmosphere?

Balloon-Borne Sounding System (BBSS) Used for atmospheric profiling Measures P, T, RH, wind speed and direction Uncertainties arise from incorrect surface.

Elements of a Remote Sensor Signals, Noise, Definitions.

Transmission Media / Channels. Introduction Provides the connection between the transmitter and receiver. 1.Pair of wires – carry electric signal. 2.Optical.

Wireless Transmission Fundamentals (Physical Layer) Professor Honggang Wang

The Remote Sensing of Winds Student: Paul Behrens Placement and monitoring of wind turbines Supervisor: Stuart Bradley.

RADAR Detection of Extensive Air Showers Nils Scharf III. Physikalisches Institut A Bad Honnef Nils Scharf III. Physikalisches Institut A Bad.

RADAR METEOROLOGY Yrd. Doç. Dr. Ali DENİZ. OUTLINE INTRODUCTION RADAR HARDWARE ELECTROMAGNETİC WAVES RADAR EQUATION FOR POINT TARGETS METEOROLOGICAL TARGETS.

B. Gentry/GSFCSLWG 06/29/05 Scaling Ground-Based Molecular Direct Detection Doppler Lidar Measurements to Space Using Wind Profile Measurements from GLOW.

MECHANICAL WAVES WAVE PROPERTIES SOUND…“WHAT?”

Chapter #12 Sound and Light.

Results from the SMEAR III urban measurement station

RADAR System Anas Abu Siam. Introduction RADAR Is a device or system for detecting and locating a target by radio waves. The term RADAR was coined in.

Doppler Radar Basic Principles.

TLE Corte June 2008 BALLOON BORNE DC AND AC ELECTRIC MEASUREMENTS IN THE VICINTY OF TROPICAL CONVECTIVE CLOUDS. J.J. BERTHELIER 1, F. SIMOES 1, J.P. POMMEREAU.

Scaling Surface and Aircraft Lidar Results for Space-Based Systems (and vice versa) Mike Hardesty, Barry Rye, Sara Tucker NOAA/ETL and CIRES Boulder, CO.

ASHOR CHIRACKAL MICHELLE TAN IMRAN BUTT LUKE LEHMAN CLIENT: MR. JOSH UNDERWOOD, ASC ADVISOR: DR. TIM BIGELOW ISU SODAR Team sddec

B. Gentry/GSFCGTWS 2/26/01 Doppler Wind Lidar Measurement Principles Bruce Gentry NASA / Goddard Space Flight Center based on a presentation made to the.

Activity B1-WA due by 4 pm Friday 03/28 Chapter 5 Mallard HW quiz – Due by 12 AM Thursday 03/27 Chapter 5 quiz in class on Thursday 03/27 Tuesday, March.

Introduction Acknowledgements Funding for the CSU-MAPS is provided through a joint NSF-MRI R 2 grant (AGS# , ) awarded to San Francisco and.

Wind power Part 2: Resource Assesment San Jose State University FX Rongère February 2009.

IGARSS2011 : FR3.T01.1: THE BISTATIC SAR EXPERIMENT WITH ALOS / PALSAR AND Pi-SAR-L 1 THE BISTATIC SAR EXPERIMENT WITH ALOS / PALSAR AND Pi-SAR-L July.

Toward a mesoscale flux inversion in the 2005 CarboEurope Regional Experiment T.Lauvaux, C. Sarrat, F. Chevallier, P. Ciais, M. Uliasz, A. S. Denning,

Session 3, Unit 5 Dispersion Modeling. The Box Model Description and assumption Box model For line source with line strength of Q L Example.

Transport and dispersion of air pollution

Environmental Business Council December 17, 2009

Surface Inversions, Atmospheric Stability, and Spray Drift.

Microphone Array Project ECE5525 – Speech Processing Robert Villmow 12/11/03.

Part 3  Transmission Media & EM Propagations.  Provides the connection between the transmitter and receiver. 1.Pair of wires – carry electric signal.

CHARACTERIZING COLD AIR POOL DYNAMICS USING THERMAL IMAGERY PRESENTED BY CHRIS JOHNSON BIOMICROMETEOROLOGY GROUP.

Hearing Detection Loudness Localization Scene Analysis Music Speech.

Validation of urbanSTREAM Using JU2003 CRTI RD Project Review Meeting Canadian Meteorological Centre August 22-23, 2006.

Institute for Atmospheric Science SCHOOL OF EARTH AND ENVIRONMENT UNIVERSITY OF LEEDS Tethered Soundings & Profiling Cathryn Birch Ian Brooks.

5. Interference Interference – combination of waves (an interaction of two or more waves arriving at the same place) Principle of superposition: (a) If.

Michael Allen. MooSci  MooSci is a device that uses scintillation measurements from the Moon to reconstruct the ground layer turbulence profile.  This.

Challenges in PBL and Innovative Sensing Techniques Walter Bach Army Research Office

Chapter 29 Urban Environment. The City as a System A city influences and is influenced by its environment A city must: –Maintain a flow of energy –Provide.

Atmospheric Lifetime and the Range of PM2.5 Transport Background and Rationale Atmospheric Residence Time and Spatial Scales Residence Time Dependence.

Observations of cold air pooling in a narrow mountain valley Allison Charland, Craig Clements, Daisuke Seto Department of Meteorology and Climate Science.

Early VALIDAR Case Study Results Rod Frehlich: RAL/NCAR Grady Koch: NASA Langley.

Chapter 14 Objectives: 1) Define periodic motion.

Hyytiälä Microscale structure of air ion spatial and temporal distribution: some problems Hyytiälä

Eddy correlation – basic principles

(sonic detection and ranging)

Martin Piringer, Claudia Flandorfer, Sirma Stenzel, Marlies Hrad

Model Experiments Part 2

Models of atmospheric chemistry

Tommy Van Horn and Jay Hooper Fall 2007

Meteorology & Air Pollution Dr. Wesam Al Madhoun

5. Interference Interference – combination of waves

Wind Velocity One of the effects of wind speed is to dilute continuously released pollutants at the point of emission. Whether a source is at the surface.

Section 3-2 Properties of Waves.

Meteorological Measurements for Improved Air Quality Modeling

Presentation transcript:

Kenneth H. Underwood Atmospheric Systems Corporation Santa Clarita, CA NAQC 2011 San Diego1

Background What is a SoDAR? Acoustic wind profiling instrument How does it work? Receives the atmosphere echo from a pulse of acoustic energy traveling away from its source What are the data products? Wind and turbulence profiles Local mixing heights Applications Transport and dispersion of pollution, particles, etc. “Virtual” instrument tower of wind instruments NAQC 2011 San Diego2

SoDAR data example NAQC 2011 San Diego3

4 System Geometries Monostatic Emitter / receptor are the same (or a closely spaced) speaker or set of speakers Bistatic Emitter and receptor speaker (or speakers) are separated at a distance.

Brief History of SoDAR Technology Monostatic and Bistatic geometry Phased array of speakers, monostatic geometry High frequency, low altitude, monostatic geometry Bistatic geometry reborn ?? NAQC 2011 San Diego5

6 Atmospheric echo components Change of Monostatic and additional Bistatic echo efficiency in altitude. Atmospheric echo “efficiency” is related to local atmospheric turbulence.

Bistatic signal improvement (4500 Hz) NAQC 2011 San Diego7

Summary Bi-static SoDAR geometry One of original geometries explored (1970s) Common volume sampling, 3D measurement with each pulse Higher data recovery expected due to higher signal level Minimum influence on and by the ambient acoustic environment Applications Wind energy Ambient wind and inversion monitoring Urban monitoring of free atmospheric flows Airport operations Cost effective (value/purchase price) instrument NAQC 2011 San Diego8