Advanced processing of Airborne Doppler Wind Lidar wind measurements to resolve PBL circulations and near surface wind fields over the open ocean
Abstract
Over the past five years, Airborne Doppler Wind Lidars (ADWL) have been operated and funded by NASA, NOAA, and the Office of Naval Research (ONR) to investigate the Marine Atmospheric Boundary Layer (MABL) over open ocean waters. Using data taken by the Twin Otter Doppler Wind Lidar (TODWL) off the coast of California in September of 2018 (and previous missions) and new data processing techniques, we have been able to study and document the presence of shear driven rolls or Organized Large Eddies (OLEs) in the MABL and near the surface, with a focus on detailing the circulation and vertical turbulent transports and exchanges near the air/sea interface. More recently, an ADWL has been flown aboard the NOAA P3 (P3DWL) during the 2017-2019 Hurricane Reconnaissance Program and NASA's Doppler Aerosol WiNd (DAWN) lidar has been flown during the 2017 CPEX field campaign in the Gulf of Mexico, Caribbean Sea and western Atlantic Ocean as well as off the California Coast in April 2019 as part of NASA's Aeolus CAL/VAL preparedness mission. Using high resolution wind data collected from these missions, we have developed advanced signal processing algorithms that allow us to process data and provide high resolution wind and aerosol measurements in the bottom 200m of the atmosphere, including the near surface layer and spray zone. Results of these investigations will be presented, with a focus on high wind situations, including tropical cyclone conditions.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.A41L2736E
- Keywords:
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- 3307 Boundary layer processes;
- ATMOSPHERIC PROCESSES;
- 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSES;
- 3322 Land/atmosphere interactions;
- ATMOSPHERIC PROCESSES;
- 3379 Turbulence;
- ATMOSPHERIC PROCESSES