Precipitation Occurrence Sensor System measurements taken at Summit Station, Greenland, 2015

This data set contains measurements of reflectivity and derived estimates of snowfall rate made by a Precipitation Occurrence Sensor System (POSS) that is deployed at Summit Station, Greenland as part of the Integrated Characterization of Energy, Clouds, Atmospheric state, and Precipitation at Summit (ICECAPS) Project. The POSS makes measurements in an approximately one cubic meter volume just above the sensor and is designed to quantify the amount of precipitation reaching the surface. Data files contain timeseries of the observed radar reflectivity and other supporting radar measureables as well as the derived snowfall rate in mm/hr. Detailed information on these parameters and other aspects of the dataset are included in the netCDF header information for each file. The POSS is operated by Matthew Shupe at the University of Colorado and is on loan from Environment Canada. Field operations are supported by the National Science Foundation's Arctic Observing Network (AON) Program.

本数据集涵盖由降水发生传感器系统（Precipitation Occurrence Sensor System, POSS）获取的反射率实测数据，以及反演得到的降雪率估算值。该系统部署于格陵兰顶峰站，隶属于格陵兰顶峰能源、云、大气状态与降水综合表征项目（Integrated Characterization of Energy, Clouds, Atmospheric state, and Precipitation at Summit, ICECAPS）。
该POSS系统在传感器正上方约1立方米的空间内开展测量，其设计目标为量化到达地表的降水量。数据文件包含观测得到的雷达反射率、其他辅助雷达可测参数的时间序列，以及以毫米每小时（mm/hr）为单位的反演降雪率。有关上述参数及数据集其他细节的完整信息，均收录于每个数据文件的netCDF文件头信息中。
该POSS系统由科罗拉多大学的Matthew Shupe负责运维，并由加拿大环境部（Environment Canada）借出。本项目的野外作业得到了美国国家科学基金会北极观测网（Arctic Observing Network, AON）项目的资助。