Tethered balloon-borne measurements of terrestrial radiation during flight 1 (PS122/4_45-141)

The tethered balloon system BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) was operated during leg 4 of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC). The balloon was operated from the Balloon Town site in the central observatory, close to RV Polarstern (Shupe et al., 2022, Elementa). Balloon payload included an extended meteorological package, an ultrasonic anemometer package, a broadband radiation package, the video ice particle sampler, and the cubic aerosol measurement platform. An overview showing the value of the combined observation is displayed by Lonardi et al. (submitted). The data processing is described in Pilz et al. (in preparation). The present dataset covers the processed terrestrial irradiances measured by the broadband radiation package on 18 flights between 29 June and 27 July 2020. Terrestrial irradiances were corrected for the time response of the pyrgeometer (6 s) and averaged over 3 s. Flagging of ice and liquid water is provided, based on the analysis of 0.1 Hz pictures of the upper pyrgeometer. Solar irradiances are also available (doi:10.1594/PANGAEA.944232).

用于低层大气廓线探测的模块化系留气球系统"白鲸"（BELUGA，Balloon-bornE moduLar Utility for profilinG the lower Atmosphere）曾在北极气候研究多学科漂流观测站（MOSAiC）第4航次中投入作业。该气球于观测站中部的"气球镇"站点开展操作，紧邻极星号（RV Polarstern）科考船（Shupe等人，2022，《Elementa》）。气球搭载的载荷组件包括扩展型气象探测套件、超声风速仪套件、宽带辐射测量套件、视频冰粒子采样器以及立方体质气溶胶测量平台。Lonardi等人（已投稿）的研究展示了该综合观测体系的应用价值。数据处理流程详见Pilz等人（在编）的相关成果。本数据集涵盖2020年6月29日至7月27日期间18次飞行任务中，由宽带辐射测量套件测得的经处理地面辐射照度数据。地面辐射照度已针对长波辐射计（pyrgeometer）6秒的时间响应特性完成校正，并以3秒为间隔进行平均。基于对长波辐射计上部0.1Hz分辨率图像的分析，数据集提供了冰相与液相水的识别标记。太阳辐射照度数据亦已公开（doi:10.1594/PANGAEA.944232）。