GPM GROUND VALIDATION ENVIRONMENT CANADA (EC) SNOW SURVEYS GCPEX V1

The GPM Ground Validation Environment Canada Snow Surveys GCPEx dataset was manually collected during the GPM Cold-season Precipitation Experiment (GCPEx), which occurred in Ontario, Canada, January 20, 2012 through February 27, 2012 across four sites (CARE, Steamshow, Huronia Airport, and Skydive-Jump). GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. Snow depth, water equivalent and density transects were surveyed weekly at each of the GCPEx sites in order to provide baseline information on the distribution of snow on the ground. Pairs of bulk density and snow water equivalent measurements were made every 25 m along the same transect using an ESC-30 (30 cm2 cross sectional area) snow corer. Snow depth measurements were made every 50 cm along a 100 m transect using a GPS equipped snow depth probe.

GPM 地面验证环境加拿大雪地调查 GCPEx 数据集系在加拿大安大略省进行的大气降水实验（GCPEx）期间人工收集而成，该实验于 2012 年 1 月 20 日至 2012 年 2 月 27 日在四个地点（CARE、Steamshow、Huronia 机场和 Skydive-Jump）展开。GCPEx 通过收集微物理特性、相关遥感观测数据以及降水雪的协同模型模拟，旨在解决 GPM 雪量检索算法的不足之处。在 GCPEx 各个地点，每周对雪深、水当量及密度剖面进行测量，以提供地面雪分布的基准信息。沿同一剖面每隔 25 米使用 ESC-30（30 平方厘米横截面积）雪钻进行大量密度和雪水当量测量。使用配备 GPS 的雪深探测器，沿 100 米剖面每隔 50 厘米进行雪深测量。