High resolution atmospheric measurements during high-level horizontal flight leg SP50319H05 with POLAR 5

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，采集于2013年3月开展的三次飞行任务期间，主要覆盖斯瓦尔巴群岛（Svalbard）及其以北海冰边缘区域，相关探测隶属于"春季大气边界层实验（SpringTime Atmospheric Boundary Layer Experiment, STABLE）"科考项目。本次科考项目由阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute, AWI）与芬兰气象研究所（Finnish Meteorological Institute, FMI）主导。探测任务由POLAR 5研究飞机执行，所有单次科研飞行时长为5至6小时，起降均位于朗伊尔城机场（Longyearbyen Airport）。本次科考期间，观测重点聚焦于对流层低层的垂直结构以及边界层的变化特征，例如海洋冷空气爆发期间的边界层演变，以及海冰冰间水道上空的对流活动。本数据集的主体数据采集于斯匹次卑尔根岛（Spitsbergen）北部的维德峡湾（Wijdefjorden），该峡湾呈南北走向，全长超过100公里。本次探测旨在研究该峡湾内的边界层结构，并分析地形对大气状态的影响。峡湾南部区域在距峡湾顶端以北约72.5公里范围内均被固定海冰覆盖，峡湾北部则存在开阔水域。