High resolution atmospheric measurements during high-level horizontal flight leg SP50317H01 with POLAR 5@en

The data set consists of high resolution airborne measurements that were obtained mainly over Svalbard and near the sea ice edge north of Svalbard on three days in March 2013 during the campaign \"SpringTime Atmospheric Boundary Layer Experiment (STABLE). STABLE was led by the Alfred Wegener Institue (AWI) and by the Finnish Meteorological Institute (FMI). The measurements were performed using the POLAR 5 research aircraft, where all research flights of 5-6 hours duration started and ended at Longyearbyen airport. During STABLE, observations focused on the vertical structure of the lower troposphere as well as boundary layer modifications, e.g. during marine cold-air outbreaks and by convection over leads in sea ice. The data set presented here predominantly consists of measurements that were obtained over the Wijdefjorden, which is a North-South oriented fjord with a length of more than 100km in the northern part of Spitsbergen. The measurements were carried out to study the boundary layer structure in the fjord as well as for analyses of the role of the topography on the atmospheric conditions. In its southern part, the fjord was covered by land-fast sea ice until about 72.5km north of the fjord's head. In its northern part, there was open water.本数据集包含高分辨率航空探测数据，主要采集于“春季大气边界层实验（SpringTime Atmospheric Boundary Layer Experiment, STABLE）”执行期间的2013年3月的三天科考作业中，观测区域覆盖斯瓦尔巴群岛（Svalbard）及该群岛北侧的海冰边缘附近海域。该实验由阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute, AWI）与芬兰气象研究所（Finnish Meteorological Institute, FMI）联合主导。本次探测工作由POLAR 5号科研飞机执行，所有单次时长5至6小时的科研航班均以朗伊尔城机场（Longyearbyen airport）作为起降站点。实验期间，观测重点聚焦于对流层低层的垂直结构特征，以及大气边界层的演化规律——例如海洋性冷空气爆发期间，或是海冰裂缝上方对流活动引发的边界层扰动。本次发布的数据集核心收录了维德峡湾（Wijdefjorden）区域的探测数据：该峡湾呈南北走向，位于斯匹次卑尔根岛（Spitsbergen）北部，全长超过100千米。本次探测旨在研究该峡湾内的大气边界层结构，同时分析地形对局地大气环境的影响作用。峡湾南部区域，在距离峡湾湾顶以北约72.5千米的范围内均被固定海冰（land-fast sea ice）覆盖；而峡湾北部区域则分布有开阔水域。