Precipitation amount of Pluvio rain gauge at AWIPEV, Ny-Ålesund (2019)@en

The OTT Pluvio2 Version 400 is an all-weather precipitation gauge that measures the amount of precipitation using the weighing principle. It measures the weight of the collecting bucket including its content. The difference between the current bucket content and the previous one recorded gives the precipitation amount. The data set includes the non-real-time output of the OTT software which is particularly suited for daily and monthly totals. The non-real-time output provides a more precise precipitation sum due to better filtering: fine precipitation is collected over a maximum of one hour and output after reaching the threshold of 0.05 mm within that hour. If the fine precipitation does not reach the threshold within an hour, there will be no output. The resolution of the precipitation values is 0.01 mm. The measurement uncertainty is the larger value of ± 0.1 mm or ±1%.OTT Pluvio2 400型降水测量仪（OTT Pluvio2 Version 400）是一款全天候降水测量仪，采用称重原理测定降水量。该仪器通过采集承接桶及其内部承载降水的总重量，通过当前承接桶内降水重量与上一次记录的重量差值计算得到降水量。本数据集包含该OTT配套软件的非实时输出数据，此类数据尤其适配日、月降水总量的统计工作。得益于更完善的滤波处理，该非实时输出可提供精度更高的降水累加值：细弱降水将在最长1小时的周期内持续收集，若该时段内累计降水量达到0.05毫米的阈值，则输出对应数据；若1小时内未达到该阈值，则无数据输出。降水数值的分辨率为0.01毫米，测量不确定度取±0.1毫米与±1%中的较大值。