High resolution atmospheric measurements during descending profile SP50317t06 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机载观测资料，采集于2013年3月的三次飞行任务，观测区域主要覆盖斯瓦尔巴群岛（Svalbard）以及斯瓦尔巴群岛北侧的海冰边缘附近海域，相关观测隶属于“春季大气边界层实验（SpringTime Atmospheric Boundary Layer Experiment, STABLE）”科考项目。该项目由阿尔弗雷德·魏格纳研究所（Alfred Wegener Institute, AWI）与芬兰气象研究所（Finnish Meteorological Institute, FMI）联合牵头实施。观测任务搭载POLAR 5号研究飞机执行，所有科研飞行时长为5至6小时，起降均位于朗伊尔城机场。本次STABLE科考的观测核心聚焦于对流层低层的垂直结构以及大气边界层的演变特征，例如海洋冷气团爆发期间、海冰冰间水道上方对流活动引发的边界层改造过程。本数据集收录的观测数据主要采集自斯匹次卑尔根岛北部的维德菲厄泽峡湾（Wijdefjorden），该峡湾呈南北走向，全长超过100千米。此次观测旨在研究该峡湾内的大气边界层结构，同时分析地形对大气环境的影响作用。该峡湾南部区域（直至峡湾顶端以北约72.5千米处）被固定海冰覆盖，北部区域则存在开阔水域。