High resolution atmospheric measurements during high-level horizontal flight leg SP50325H02 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.

本数据集收录了2013年3月的3个科考日期间，主要在斯瓦尔巴群岛及该群岛北部海冰边缘区域获取的高分辨率机载测量数据，相关数据采集自"春季大气边界层实验（SpringTime Atmospheric Boundary Layer Experiment, STABLE）"科考计划。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）牵头实施。测量工作依托POLAR 5号研究型飞机开展，所有时长5至6小时的科研飞行均以朗伊尔城机场为起降点。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演变过程，例如海洋冷空气爆发期间与海冰冰间水道上方对流活动引发的边界层变化。本数据集所收录的测量数据主要采集自维耶夫峡湾——斯匹次卑尔根岛北部一条南北走向、长度超100千米的峡湾。开展本次测量旨在研究该峡湾内的大气边界层结构，并分析地形对大气状况的影响作用。该峡湾南部区域，在距峡湾顶端以北约72.5千米范围内均被固定海冰覆盖；峡湾北部区域则存在无冰水域。