PANGAEA_902805 Wind and backscatter profiles measured by a wind lidar during POLARSTERN cruise PS109 (ARK-XXXI/4) Zentek, Rolf; Preußer, Andreas; Heinemann, Günther Wind and backscatter profiles measured by a wind lidar during POLARSTERN cruise PS109 (ARK-XXXI/4) 2019-06-20 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.902805 Investigator Rolf Zentek zentek@uni-trier.de Earth Science DATE/TIME LONGITUDE LATITUDE Wind speed Wind direction Fit deviation Optical backscattering coefficient geoscientificInformation Arctic Backscatter Doppler Wind-LiDAR Lidar PS109 PS109_0_underway-8 wind direction wind lidar wind speed Doppler wind lidar, Halo Photonics, Stream Line [ship born] Polarstern 2017-09-18 2017-10-07 Complete 76.14689 80.46152 -19.77924 -5.88968 CATS CATS - The Changing Arctic Transpolar System SWIARC-YOPP Ship-based wind lidar measurements of the Arctic boundary layer YOPP Year of Polar Prediction unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 18565 data points text/tab-separated-values Kanzow, Torsten (2018): The Expedition PS109 of the Research Vessel POLARSTERN to the Nordic Seas in 2017. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 715, 139 pp, https://doi.org/10.2312/BzPM_0715_2018

This data set includes vertical profiles of wind speed (FF), wind direction (DD), fit deviation (FD) and the backscatter confident (BB) measured by a ship born wind lidar. The definition of the fit deviation, the main processing of the lidar data and an evaluation of the measurements is described in Zentek et al. (2018; doi:10.5194/amt-11-5781-2018 ). For this data set winds were computed every 50 m up to 1000 m and the data is averaged over time. The averaging time is one hour (+-30min around each full hour) and missing values are removed. A weighted arithmetic mean was used for the u- and v-component as well as for the fit deviation with the weights "1/fit deviation". The backscatter coefficient was averaged without weights. As backscatter was always measured, hours were included even if no wind could be computed due to atmospheric conditions but hours with no reliable data were excluded (e.g. the lidar was turned off; the ship was rocking to hard; etc.). Further detailed information for this measurement campaign: number of rays per VAD [6-8], averaging time [3-8 sec], chosen SNR threshold [-19 dB]. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.902805"! ** The measurements were performed during the Polarstern cruise PS109 funded by the Alfred Wegener Institute under Polarstern grants AWI_PS109_12. The research was funded by the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung–BMBF) as part of the project CATS ("The Changing Arctic Transpolar System") under grant 03F0776D.

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.17815/jlsrf-3-163 Polarstern https://doi.org/10.2312/BzPM_0715_2018 The Expedition PS109 of the Research Vessel POLARSTERN to the Nordic Seas in 2017 https://www.polarprediction.net YOPP https://www.transdrift.info/home CATS DIF 9.4 2019-06-20 2026-04-29