More on Wind Shear Statistics: Intercomparison of Measurements from Airborne DWL and Ground-based Sensors S. Greco and G.D. Emmitt Simpson Weather Associates.

Slides:

Advertisements

Similar presentations

Airborne Doppler Wind Lidars for Climate and Weather Forecasting G. D. Emmitt Simpson Weather Associates Charlottesville, VA.

Advertisements

G. D. Emmitt and C. O’Handley Simpson Weather Associates

Validation of meso-scale model winds in complex terrain and coastal regions using an airborne coherent Doppler wind lidar G. D. Emmitt, S. Greco, S. Wood.

Two impact studies of airborne DWL data on tropical cyclone track and intensity forecasts G. D. Emmitt, K. Godwin and S. Greco Simpson Weather Associates.

CALIPSO and LITE data for space-based DWL design and Data utility studies: Research plans G. D. Emmitt Simpson Weather Associates D. Winker and Y. Hu (LaRC)

US Calibration/Validation Activities for the ADM/Aeolus Mission Mike Hardesty and Lars-Peter Riishojgaard.

Atmospheric structure from lidar and radar Jens Bösenberg 1.Motivation 2.Layer structure 3.Water vapour profiling 4.Turbulence structure 5.Cloud profiling.

Atmospheric Sciences 370 Observing Systems January 2007.

Lidar Remote Sensing for Environmental Monitoring IX

Observations and simulations of the wind structure in the boundary layer around an isolated mountain during the MATERHORN field experiment Stephan F.J.

Application of a High-Pulse-Rate, Low-Pulse-Energy Doppler Lidar for Airborne Pollution Transport Measurement Mike Hardesty 1,4, Sara Tucker 4*,Guy Pearson.

Science Objectives for the ATHENA-OAWL Venture Tech Airborne Mission M. Hardesty CIRES University of Colorado/NOAA S. Tucker and C. Weimer Ball Aerospace.

Prospecting for atmospheric energy for autonomous flying machines G. D. Emmitt and C. O'Handley Simpson Weather Associates Lidar Working Group Meeting.

Utility of Doppler Wind Lidars in cloudy conditions For Marty Ralph Provided by Dave Emmitt per request by Wayman Baker 1.

Kick-Off-Treffen SPP, Bonn October 2006 Improved Water Vapour and Wind Initialisation for Precipitation Forecasts: Impact Studies with the ECMWF.

QuikScat and WindSat underflights with TODWL G. D. Emmitt, C. O'Handley and S. Greco Simpson Weather Associates Lidar Working Group Meeting Snowmass July.

Lidar Working Group on Space-Based Winds, Snowmass, Colorado, July 17-21, 2007 A study of range resolution effects on accuracy and precision of velocity.

AO: Areas solicited for contribution Validation using other satellite, airborne, or ground- based experiments providing independent measurements of wind.

Science Mission Directorate Meeting of the Working Group on Space-Based Lidar Winds: View from NASA Headquarters Ramesh Kakar Weather Focus Area Leader.

Point vs. VAD scans for complex terrain G. D. Emmitt and C. O’Handley WG SBLW Destin, FL January 27-30, 2009.

Using TODWL and Optical Particle Counters to Investigate Aerosol Backscatter Signatures from Organized Structures in the Marine Boundary Layer D.A. Bowdle.

TODWL and other Navy airborne wind lidar plans including nocturnal flight plan in November G. D. Emmitt SWA Working Group meeting Snowmass, CO 18 July,

Update on Hybrid Detection DWL Study* G. D. Emmitt WG on Space-based Lidar Winds Oxnard, CA 7-9 February, 2001 *funded by the IPO.

Integrating Airborne DWL and PBL Models in Real Time G.D. Emmitt, C. O’Handley, S. A. Wood and S. Greco Simpson Weather Associates WGSBLW Miami 2007.

Status of TODWL and GWOLF G. D. Emmitt & C. O’Handley SWA January 2006.

OThree Chemistry MM5/CAMx Model Diagnostic and Sensitivity Analysis Results Central California Ozone Study: Bi-Weekly Presentation 2 T. W. Tesche Dennis.

Update on NASA’s Sensor Web Experiments Using Simulated Doppler Wind Lidar Data S. Wood, D. Emmitt, S. Greco Simpson Weather Associates, Inc. Working Group.

Status of CFLOS study using CALIPSO data G. D. Emmitt, D. Winker and S. Greco WG SBLW Destin, FL January 27-30, 2009.

Project goals Evaluate the accuracy and precision of the CO2 DIAL system, in particular its ability to measure: –Typical atmospheric boundary layer - free.

Airborne Measurement of Horizontal Wind and Moisture Transport Using Co-deployed Doppler and DIAL lidars Mike Hardesty, Alan Brewer, Brandi McCarty, Christoph.

Combining TODWL with Smart Towed Platform for unique investigation of the marine atmospheric boundary layer G. D. Emmitt and C. O'Handley, Simpson Weather.

HS3 Review and Planning Meeting Scott Braun. Goals of Meeting Review 2012 campaign – Initial science results – Lessons learned Prepare for 2013 campaign.

© 2008 Noblis, Inc. Planning for DWL Airborne Demonstration - Discussion Ken Miller Lidar Working Group Monterey CA February 7, 2008.

October 02, st IHOP_2002 Water Vapor Intercomparison Workshop Status of intercomparisons and the next steps  Characterize moisture measuring techniques.

Developing a Cal/Val Plan* for a Space-based Doppler Wind Lidar G. D. Emmitt WG on Space-based Lidar Winds Oxnard, CA 7-9 February, 2001 * funded by the.

Evaluation of T511(1°) clouds Simpson Weather Associates 7 June 2007 NCEP OSSE meeting.

Layered Water Vapor Quick Guide by NASA / SPoRT and CIRA Why is the Layered Water Vapor Product important? Water vapor is essential for creating clouds,

Radio Occultation. Temperature [C] at 100 mb (16km) Evolving COSMIC Constellation.

NOAA Airborne Doppler Update Mike Hardesty, Alan Brewer, Brandi McCarty and Christoph Senff NOAA/ETL and University of Colorado/CIRES Gerhard Ehret, Andreas.

Doppler Lidar Winds & Tropical Cyclones Frank D. Marks AOML/Hurricane Research Division 7 February 2007.

The Orbiting Carbon Observatory (OCO) Mission: Retrieval Characterisation and Error Analysis H. Bösch 1, B. Connor 2, B. Sen 1, G. C. Toon 1 1 Jet Propulsion.

Validation of Satellite-derived Clear-sky Atmospheric Temperature Inversions in the Arctic Yinghui Liu 1, Jeffrey R. Key 2, Axel Schweiger 3, Jennifer.

Adaptive Observations at NWS Lacey Holland, SAIC at EMC/NCEP/NWS Zoltan Toth, EMC/NCEP/NWS Acknowledgements:

Prospecting for Thermals Using an Airborne DWL G. D. Emmitt and C. O’Handley Simpson Weather Associates WGSBWL Miami 2007.

GWOLF and VALIDAR Comparisons M. Kavaya & G. Koch NASA/LaRC D. Emmitt & S. Wood SWA Lidar Working Group Meeting Sedona, AZ January 2004.

METR Introduction to Synoptic Meteorology Other upper air sounding systems, apart from radiosondes University of Oklahoma 2004.

Shear statistics in the lower troposphere and impacts on DWL data interpretation G. D. Emmitt and S. Greco Simpson Weather Associates WG on Space-Based.

ISTP 2003 September15-19, Airborne Measurement of Horizontal Wind and Moisture Transport Using Co-deployed Doppler and DIAL lidars Mike Hardesty,

NASA Science Overview Ramesh Kakar NASA Program Scientist for Wind Lidar (also, Aqua, TRMM, GPM and CYGNSS) 28 April,

Planned Simulations for New Nature Run G. D. Emmitt, S. Greco, S. A. Wood and C. O’Handley Simpson Weather Associates OSEE meeting November 16, 2006.

Kavaya-1 Coherent Doppler Lidar Roadmap to Both the NRC Decadal Survey “Science Demonstration” and “Operational” Missions Michael J. Kavaya Jirong Yu Upendra.

Complex terrain study using TODWL data Emmitt (SWA) de Wekker and Godwin (SWA/UVa) DWL WG Meeting 24 – 26 August 2010 Bar Harbor, Me.

NPOESS P 3 I Space Demonstration of 3D wind observations using Doppler Wind Lidar (DWL) DWL Mission Definition Team April 18, April 05.

CFLOS opportunities update with CALIPSO and impact on simulating GWOS and ADM in OSSEs G. D. Emmitt and S. Greco Simpson Weather Associates D. Winker NASA/LaRC.

DWL Operations within a Sensor Web Modeling and Data Assimilation System:Recent Results M. Seabloom, S. Talabac, G. McConaughy, J. Ardizzone, G. Brin,

Mountain meteorology research using the TODWL

Clouds, shear and the simulation of hybrid wind lidar

IPO Funded Airborne DWL for Cal/Val Planning

Status of Hybrid DWL Study

Diagnostic Wind Model Initialization

Assorted Observation Systems

Application of Aeolus Winds

GLAS Cloud Statistics and Their Implications for a Hybrid Mission

New Sampling Perspectives for TODWL

NPOESS P3I & Follow-on Threshold Operational Mission

The Impact of Airborne Doppler Wind Lidar Profiles on Numerical

HARGLO-2 Wind Intercomparisons

Status of Bracketing OSSEs at NCEP for Several DWL Notional Concepts

IPO Cal/Val for a Space-Based Wind Observing Systems

Chasing tornados in VORTEX2 with TODWL/ TWOLF

Presentation transcript:

More on Wind Shear Statistics: Intercomparison of Measurements from Airborne DWL and Ground-based Sensors S. Greco and G.D. Emmitt Simpson Weather Associates Charlottesville, VA Working Group on Space-Based Lidar Winds Wintergreen, VA 8 July 2008

Motivation Shear is a major component of atmospheric instability From space and airborne platforms, a Doppler wind lidar offers the capability to measure high resolution vertical profiles of the wind, thus providing a direct, vertically contiguous measure of shear Shear can be persistent as well as transient (representativeness issue)

Overview What is Wind Shear? Wind Shear Climatologies Sounding comparisons of winds and wind shear RAOBs Microwave sounders Airborne Doppler Wind Lidar (TODWL)

Wind Shear • Wind Shear is defined in NOAA Technical Memorandum NWS FCST-23 as “a change in horizontal wind speed and/or direction, and/or vertical speed with distance, measured in a horizontal and/or vertical direction” • As defined by the National Weather Service, Low-Level Wind Shear is wind shear of 5 m/s or more per 30m (.169s-1) in a layer more than 60m thick within the lowest 600m of the atmosphere

Wind Shear • Vertical wind shear is not a scalar quantity, but a vector. Using just “speed shear” will often underestimate the amount of shear present. Direction of the horizontal winds must be considered as well • On benign days, wind shear values are typically < 0.08 s-1. Wind shear meeting official criteria is 0.169 s-1

Wind Shear Climatologies • Very limited and usually averaged (hourly, monthly, seasonally, annually) • Deep layer (850 -200mb) shear for tropics but no full column shear values • Mostly based on tower level data (0 -150m) - Central Plains network

Observations

Global Radiosonde Network

NOAA Profiler Network (Central US)

COOPERATIVE AGENCY PROFILERS

TODWL TODWL - Twin Otter Doppler Wind Lidar Joint ONR and NPOESS IPO research project Flown aboard the Navy CIRPAS Twin Otter aircraft Flights supported by Army, Navy and DARPA Series of seven flight missions conducted near the coast of Monterey, CA since 2002 (125 hours) Most recent campaign in November 2007 Develop calibration/validation procedures for all wind profiling systems

TODWL DATA & OBSERVATIONS Corrected for aircraft induced pointing errors Corrected for lidar beam pointing errors Employ threading near ground Complete wind profiles every 250m Accuracy of .05 m/s for wind observations 25-50 m vertical resolution

Particle probes TODWL scanner STV Surface Temperature Sensor

Monterey Bay Leg 5 Leg 4 Leg 3 Leg 1 Leg 2 November 12, 2007

Leg 5 NE - SW

Intercomparisons

TODWL vs. microwave sounder

TODWL vs. Rawinsondes

November 16, 2007 Calibration Flight

Concluding Thoughts High resolution shear measurements represents a primary target of both current airborne and future space-based observations and a challenge to signal processing Shear represents a major source of bias and possible error in estimating an average wind over a layer Airborne lidar provide excellent data bases for simulating space-based DWL observations of shear.

Aerosol weighted shear processing