Spaceborne Wind Lidar Observations by Aeolus Data Products and Pre-Launch Validation with an Airborne Instrument

Transcription

1 DRAGON 3 Project ID Cal/Val Spaceborne Wind Lidar Observations by Aeolus Data Products and Pre-Launch Validation with an Airborne Instrument Reitebuch Oliver, Lemmerz Christian, Marksteiner Uwe, Stephan Rahm, Witschas Benjamin DLR German Aerospace Center, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany

2 Project Partners June 2007 May 2010 Europe: DLR and UCL China: OUC, CMA and SIOM German Aerospace Center DLR, Institute of Atmospheric Physics University College London UCL, Mullard Space Science Laboratory MSSL Ocean University of China OUC, Ocean Remote Sensing Institute ORSI China Meteorological Administration CMA, Nat. Satellite Meteorological Center Shanghai Institute of Optics and Mechanics SIOM, Chinese Academy Sciences February 2009 November 2013

3 Project Objectives credits: ESA/ATG-Medialab Wind Lidar Observations from ADM-Aeolus Validation with ground-based and airborne campaigns in Europe and China (DLR, OUC, SIOM) Study of atmospheric dynamics and assimilation of wind lidar observations (DLR, CMA) Derivation of high-resolution land-surface albedo observations in the UV (DLR, MSSL) Derivation of cloud motion winds from multi-angle imaging spectroradiometer and comparison of wind and cloud height with ADM-Aeolus (MSSL) Development and test of new retrieval algorithms for wind and land surface observations (Young Scientist)

4 Outline of the talk credits: ESA/ATG-Medialab ADM-Aeolus the 1 st wind lidar in space latest status ESA-NASA-DLR airborne campaign from May 2015 Future airborne campaigns

5 The Atmospheric Dynamics Mission ADM-Aeolus Aeolus is the first European lidar mission from ESA and first wind lidar mission worldwide Objective is to improve weather forecasting by providing global wind-profile observations Polar orbiting satellite at 400 km with single payload instrument - the Doppler lidar ALADIN credits-esa/atg-medialab 5

6 Aeolus the first wind lidar in space - first time that retrieval algorithms for spaceborne wind lidars are developed High requirement on random error (precision): 1 m/s (0-2 km) to 2 m/s (2-16 km) HLOS H max : km ΔH: m Very demanding requirements for the systematic error (accuracy): bias <0.4 m/s and linearity error <0.7 % of actual wind Fig.: adapted from ESA (2008) Wind products need to be available for NWP users within 3 hours after observation => different to other lidar missions and science-driven missions

7 True Wind as input to simulator ADM-Aeolus Data Products Fig. Courtesy M. Rennie, ECMWF L2b processed Rayleigh wind Data Product Level 1b Level 2a Level 2b Level 2c Content Line-of-Sight LOS wind geo-located, calibrated aerosol backscatter and extinction coefficient LOS wind corrected for atmospheric temperature, pressure horizontal wind vector after assimilation at ECMWF

8 Aeolus Workshop at ESRIN in February 2015 Status of Aeolus Telescope credits: R. Wimmer ADS Laser credits: ESA Aeolus workshop in Feb 2015 with representatives from WMO, WCRP, ECMWF re-emphasized need for global wind profiles Major milestone achieved by finalisation of 2 nd Flight Model lasers in April 2015 Integration of lasers into instrument on-going => performance testing of instrument starts in summer Ready for launch by end 2016

9 ADM-Aeolus WindVal Campaign in May 2015 Iceland and Greenland credits-esa/atg-medialab

10 First time with 4 Wind Lidars on 2 aircrafts

11 A2D receiver thermal hood The ALADIN airborne demonstrator and 2-µm reference wind lidar on DLR aircraft 2-µm DWL electronic rack A2D telescope 2-µm Doppler wind lidar DLR Falcon aircraft 2015 DLR Falcon aircraft payload during campaigns in 2007, 2008, 2009 and km wind observations along Greenland coast 2009

12 Greenland Summit sea ice calibration Satellite underpass DLR Falcon Flight Tracks May 2015 Jet Stream Greenland calibration Greenland Tip Jet Aeolus Track ASCAT underpass Aeolus Track Jet Stream

13 Greenland East Coast Greenland East Coast Sea Ice

14 Greenland Summit Station (3216 m ASL, N) with Wind Lidar from University Leeds (UK) Fig. courtesy Ryan Neely (Leeds)

15 Jet Stream Flight on 15 May 2015 during Textbook example of Iceland Low Pressure System Track of DLR Falcon and NASA DC 8

16 Jet Stream with wind speeds up to 70 m/s observed by 2-µm Wind Lidar on May 15,

17 THORPEX North Atlantic Waveguide and Downstream Impact Experiment NAWDEX in Sept-Oct 2016 Factors modifying waveguide disturbances Downstream impact of diabatically modified PV anomalies L L Evolution of Rossby waves along the waveguide L German HALO aircraft Water Vapor + HSRL- Lidar + Doppler Radar + Microwave Radiometer: EarthCARE Payload L ADM-Aeolus DLR Falcon aircraft with ALADIN airborne demonstrator and 2-µm wind lidar Preparation by A. Schäfler (DLR) and G. Craig (University Munich)

18 Track for 1 day over Central Europe ADM-Aeolus Validation in 2017 Central Europe Campaign Coordination of German, French, and UK aircrafts Overflights of radar windprofilers and lidar North Atlantic Campaign Coordination of DLR and NASA aircrafts Validation of Aeolus winds in sensitive regions and high-wind speed conditions Validation of Aeolus in-flight calibration over Greenland Ice sheet Aeolus Orbits for 1 week Cooperation for ground-based validation of Aeolus in China within Dragon Project

19 Perspectives for Earth Observation with Lidar ADM-Aeolus The first Doppler lidar in space for wind EarthCARE The first high spectral resolution lidar in space for aerosol and clouds MERLIN The first differential absorption lidar in space for methane ESA/ATG-Medialab ESA CNES

20 Summary and Conclusion ADM-Aeolus will sense the vertical profile of wind up to the lower stratosphere (20-30 km) with high accuracy of 1-2 m/s. credits-esa/atg-medialab ADM-Aeolus is planned to by ready for launch by end 2016 First time that 4 wind lidars were deployed on 2 aircrafts during ESA- NASA-DLR Windval campaign in 2015 Dragon 3 activities are used to prepare and coordinate a Chinese-European effort to validate ADM-Aeolus mission after launch with ground and airborne campaigns in 2017

21 Animation by Uwe Marksteiner (DLR) Aeolus Cal/Val ESA ESRIN February 10 th, 2015 Uwe Marksteiner 21