PAR004 Optical disdrometer data at Westmaas

<strong>Description:</strong> In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR004" in Westmaas, The Netherlands. Westmaas is a village in the Dutch province of South Holland located approximately 15 km south of the city centre of Rotterdam, south of the old Meuse. The same site also features a micro-rain radar "MRR003_Westmaas" (since June 2022) and a Davis weather station "Davis003_Westmaas" (since May 2023). All sensors are placed on top of an air quality monitoring container belonging to TNO, at a height of approx. 4 meters. The container is located approximately 1.5 km to the West of the village of Westmaas, in a predominantly flat and rural area.<br><strong>Format:</strong> Each NetCDF file covers a full month of observations. The temporal resolution is 1 minute. Data are provided "as is", without any post-processing. The NetCDF files contain all relevant information about all the variables, attributes and units. The global attributes of the NetCDF files contain important information about the type of sensor, logging software, project contributors and history of the dataset. If a monthly file is missing, no data are available for this month.<br><strong>Relevance:</strong> Optical disdrometer data are useful for studying the type, dynamics and microphysics of precipitation from the perspective of a fixed observer on the ground. The data can be used to help calibrate weather radars, improve quantitative precipitation estimates, calculate the absorption/attenuation/propagation of electromagnetic signals through the atmosphere, and quantify important physical quantities such as liquid water content, rain amount, intensity and kinetic energy.<br><strong>Note: </strong>This dataset is updated approximately every 3 months. Please reach out to the authors if you wish to get access to the most recent data.<br><strong>Known issues:</strong>Due to communication issues, the data from December 12, 2022 to January 3, 2023 have been lost.Due to communication issues, the data from November 1st to December 19, 2023 have been lost.

<strong>描述：</strong> 本数据集包含荷兰Westmaas地区名为"PAR004"的OTT Parsivel2雨滴谱仪（disdrometer）记录的雨滴尺寸分布、下落速度、雨滴数浓度及地面雨强的原位测量数据。Westmaas是荷兰南荷兰省的一个村庄，位于鹿特丹市中心以南约15公里处，旧马斯河以南。同一站点还配备了微雨雷达（micro-rain radar）"MRR003_Westmaas"（自2022年6月起）和Davis气象站"Davis003_Westmaas"（自2023年5月起）。所有传感器均安装在荷兰应用科学研究组织（TNO）所属的空气质量监测集装箱顶部，高度约4米。该集装箱位于Westmaas村以西约1.5公里处，地处以平坦为主的农村区域。<br><strong>格式：</strong> 每个NetCDF文件涵盖一个完整月份的观测数据，时间分辨率为1分钟。数据以"原样"提供，未经过任何后处理。NetCDF文件包含所有变量、属性及单位的相关信息；其全局属性包含传感器类型、记录软件、项目贡献者及数据集历史等重要信息。若某月份文件缺失，则该月份无可用数据。<br><strong>相关性：</strong> 光学雨滴谱仪（optical disdrometer）数据有助于从地面固定观测者的视角研究降水的类型、动力学特性及微物理过程。这些数据可用于校准气象雷达、改进定量降水估计、计算电磁信号在大气中的吸收/衰减/传播特性，以及量化液态水含量、降雨量、雨强和动能等重要物理量。<br><strong>说明：</strong> 本数据集约每3个月更新一次。如需获取最新数据，请联系作者。<br><strong>已知问题：</strong> 由于通信问题，2022年12月12日至2023年1月3日的数据丢失；2023年11月1日至2023年12月19日的数据同样因通信问题丢失。