MIDAS Open: UK daily rainfall data, v202407

The UK daily rainfall data contain rainfall accumulation and precipitation amounts over a 24 hour period. The data were collected by observation stations operated by the Met Office across the UK and transmitted within the following message types: NCM, AWSDLY, DLY3208 and SSER. The data spans from 1853 to 2023. Over time a range of rain gauges have been used - see section 5.6 and the relevant message type information in the linked MIDAS User Guide for further details.

This version supersedes the previous version (202308) of this dataset and a change log is available in the archive, and in the linked documentation for this record, detailing the differences between this version and the previous version. The change logs detail new, replaced and removed data. These include the addition of data for calendar year 2023.

This dataset is part of the Midas-open dataset collection made available by the Met Office under the UK Open Government Licence, containing only UK mainland land surface observations owned or operated by Met Office. It is a subset of the fuller, restricted Met Office Integrated Data Archive System (MIDAS) Land and Marine Surface Stations dataset, also available through the Centre for Environmental Data Analysis - see the related dataset section on this record. A large proportion of the UK raingauge observing network (associated with WAHRAIN, WADRAIN and WAMRAIN for hourly, daily and monthly rainfall measurements respectively) is operated by other agencies beyond the Met Office, and are consequently currently excluded from the Midas-open dataset. Currently this represents approximately 13% of available daily rainfall observations within the full MIDAS collection.

英国每日降雨数据集包含24小时时段内的降雨累积量与降水量。该数据由英国气象局（Met Office）旗下遍布英国全境的观测站采集，并通过以下报文类型传输：NCM、AWSDLY、DLY3208及SSER。数据时间跨度为1853年至2023年。随着时间推移，数据集曾使用过一系列雨量计，详细信息请参见第5.6节以及链接的MIDAS用户指南中对应报文类型的相关说明。

本版本替代了该数据集此前的202308版，存档文件及本记录的关联文档中均提供了变更日志，用以详述本版本与旧版之间的差异。变更日志会列明新增、替换及移除的数据内容，其中包含2023日历年的观测数据。

本数据集隶属于英国气象局依据英国开放政府许可（UK Open Government Licence）发布的Midas-open数据集集合，仅包含英国本土陆面观测数据，且这些数据归英国气象局所有或由其运营。它是更完整的受限数据集——英国气象局综合数据存档系统（MIDAS）陆地与海洋地面站数据集的子集，后者同样可通过环境数据分析中心获取，详情请参见本记录的关联数据集板块。英国雨量观测网络中有很大一部分（分别对应小时、每日及月度降雨测量的WAHRAIN、WADRAIN与WAMRAIN项目）由英国气象局以外的其他机构运营，因此目前未被纳入Midas-open数据集。该部分观测约占完整MIDAS集合中可用每日降雨观测数据的13%。

搜集汇总

背景与挑战

背景概述

该数据集是英国气象局提供的MIDAS开放数据集，包含1853年至2023年间的英国每日降雨数据，涵盖降雨积累和降水量，由多个观测站通过不同消息类型收集。数据集已被新版本取代，但数据量达273.62K文件和5GB，使用开放政府许可，仅覆盖英国本土陆地观测，占完整观测网络的约13%。