Tethered balloon-borne measurements of turbulence on 2020-07-24 from 10:17 to 11:53 during MOSAiC leg 4@en

The tethered balloon system BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) was operated during MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) leg 4 in July 2020. The balloon was started from an ice floe close to RV Polarstern between 29 June 2020 and 27 July 2020. BELUGA consists of a 90m3 helium-filled balloon with modular instrumentation: An ultrasonic anemometer package, a broadband radiation package with upward and downward-looking pyranometers and pyrgeometers, and an aerosol package. Lonardi et al. (in preparation) give an overview of the BELUGA operation during MOSAiC leg 4. The data processing routines are described in Pilz et al. (in preparation). The present data set covers the turbulence measurements of the ultrasonic anemometer recorded on eight days between 10 and 26 July 2020.系留气球系统BELUGA（全称：Balloon-bornE moduLar Utility for profilinG the lower Atmosphere，即低层大气廓线探测模块化通用载荷）于2020年7月在MOSAiC（北极气候研究多学科漂流观测站，Multidisciplinary drifting Observatory for the Study of Arctic Climate）第4航次期间投入运行。该系留气球于2020年6月29日至7月27日期间，从紧邻极星号（RV Polarstern）科考船的浮冰处放飞。BELUGA系统由容积90立方米的充氦气球与模块化探测载荷组成，具体包括：超声风速仪（ultrasonic anemometer）套件、配备上行与下行式总辐射表（pyranometer）和长波辐射表（pyrgeometer）的宽带辐射套件，以及气溶胶探测套件。Lonardi等人（待刊）对MOSAiC第4航次中BELUGA的作业情况进行了概述。Pilz等人（待刊）则详细阐述了配套的数据处理流程。本数据集涵盖2020年7月10日至26日期间共8天的超声风速仪湍流测量数据。