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NASA Science Overview

This article provides an overview of the coordinated airborne wind lidar campaign scheduled for May 11-27, 2015, from Keflavik, Iceland. The campaign aims to gather 3-dimensional atmospheric wind profiles that will be useful for planning ESA's ADM-AEOLUS mission, processing ADM-AEOLUS wind data, and conducting calibration/validation activities. The NASA DC-8 aircraft will carry the Doppler Aerosol WiNd (DAWN) lidar system, the Tropospheric Wind Lidar Technology Experiment (TWiLiTE) lidar system, and parachute-less dropsondes.

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NASA Science Overview

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  1. NASA Science Overview Ramesh Kakar NASA Program Scientist for Wind Lidar (also, Aqua, TRMM, GPM and CYGNSS) 28 April, 2015 1

  2. NASA Weather Focus Area WorkshopPreliminary Result, April 7 – 9, Arlington, VA About 80 people attended the two and a half days NASA weather focus area workshop Top phenomena: Extreme events Top observations: high res wind profile obs in all weather high res temp and moisture profiles Atmosphere – Land fluxes Top system capability development advanced DA (including coupled) high res global models OSSE

  3. Brief Points • A coordinated airborne wind lidar campaign is scheduled for May 11-27, 2015 from Keflavik, Iceland. Both ESA- and NASA-provided instruments and platforms will be flying coordinated trajectories to get information of 3-dimensional atmospheric wind profiles that will be useful in the final planning of ESA’s ADM-AEOLUS mission, in processing the ADM-AEOLUS wind data, and in conducting cal/val activities when it is in orbit. • Underflights of MODIS, CALIPSO and ASCAT will provide lidar winds and cloud/aerosol information useful to these instruments’ science teams. The planned measurements will also aid longer-term studies by NASA for the 3D WINDS mission called for in the 2007 Decadal Survey for Earth Science. • The ESA and NASA aircraft will be the DLR Falcon and the DC-8, respectively. NASA’s DC-8 will carry the Doppler Aerosol WiNd (DAWN) pulsed wind-profiling coherent-detection lidar system from Langley Research Center, the Tropospheric Wind Lidar Technology Experiment (TWiLiTE) pulsed wind-profiling direct-detection lidar system from Goddard Space Flight Center, and parachute-less dropsondes from Yankee Environmental Systems, Inc. • NASA demonstrated the viability of its primary payload, the DAWN lidar, using the NASA UC-12B aircraft, in an October-November 2014 airborne campaign from Kangerlussuaq, Greenland. • Evaluation of ATHENA-OAWL is ongoing. 3

  4. PolarWinds and ADM Cal/Val Preparatory Campaigns Campaign 1: 10/26 – 11/14/14; LaRC’s UC-12B; Kangerlussaq, Greenland Campaign 2: 05/11 – 05/29/15; NASA DC-8; Keflavik, Iceland Leads: NASA LaRC and Simpson Weather Associates (PI) Science Team: Colorado University, Ohio State University, University of Washington NASA LaRC, Simpson Weather Associates. Campaign Objectives: PolarWinds Mesoscale model validation/development Stable boundary layers; katabatic flows; marginal ice zone dynamics ESA ADM Cal/Val Obtain DWL LOS observations that mimic those expected with ADM Co-fly with DLR Falcon in Campaign 2 to calibrate Aeolus simulator (A2D) Instrumentation: Campaign 1: DAWN only Campaign 2: DAWN, Yankee dropsondes, TWiLiTE

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