HadUK-Grid Climate Observations by UK countries, v1.0.3.0 (1862-2020)

HadUK-Grid is a collection of gridded climate variables derived from the network of UK land surface observations. The data have been interpolated from meteorological station data onto a uniform grid to provide complete and consistent coverage across the UK. These data at 1 km resolution have been averaged across a set of discrete geographies defining UK countries consistent with data from UKCP18 climate projections. The dataset spans the period from 1862 to 2020, but the start time is dependent on climate variable and temporal resolution.

The gridded data are produced for daily, monthly, seasonal and annual timescales, as well as long term averages for a set of climatological reference periods. Variables include air temperature (maximum, minimum and mean), precipitation, sunshine, mean sea level pressure, wind speed, relative humidity, vapour pressure, days of snow lying, and days of ground frost.

This data set supersedes the previous versions of this dataset which also superseded UKCP09 gridded observations. Subsequent versions may be released in due course and will follow the version numbering as outlined by Hollis et al. (2018, see linked documentation).

This release includes data for the calendar year 2020. Ongoing quality checks and data recovery to historical data results in changes to around 0.01% of the observational station data used as input to produce the gridded dataset. A correction to _FillValue assignment in the metadata for seasonal and annual grids has also been applied to be consistent with the rest of the dataset.

The primary purpose of these data are to facilitate monitoring of UK climate and research into climate change, impacts and adaptation. The datasets have been created by the Met Office with financial support from the Department for Business, Energy and Industrial Strategy (BEIS) and Department for Environment, Food and Rural Affairs (DEFRA) in order to support the Public Weather Service Customer Group (PWSCG), the Hadley Centre Climate Programme, and the UK Climate Projections (UKCP18) project. The data recovery activity to supplement 19th and early 20th Century data availability has also been funded by the Natural Environment Research Council (NERC grant ref: NE/L01016X/1) project "Analysis of historic drought and water scarcity in the UK". The dataset is provided under Open Government Licence.

HadUK-Grid 是由英国陆地表面观测网络派生的一系列网格化气候变量集合。该数据集通过气象站数据插值至统一网格，以确保英国全域的完整且一致覆盖。这些1公里分辨率的网格数据是在一系列离散的地理区域上平均计算得出的，这些区域与 UKCP18 气候预测数据相一致。该数据集涵盖了自 1862 年至 2020 年的时期，但起始时间取决于气候变量和时间分辨率。

该网格数据针对每日、每月、季节性和年度时间尺度进行生成，同时还包括一系列气候参考时期的长期平均值。变量包括气温（最高、最低和平均值）、降水量、日照、平均海平面气压、风速、相对湿度、水汽压、积雪天数和地面霜冻天数。

本数据集取代了先前版本的该数据集，而这些先前的版本又取代了 UKCP09 网格观测数据。后续版本将适时发布，并遵循 Hollis 等人（2018年，参见相关文档）所概述的版本编号。

本发布包括 2020 年的日历年数据。持续的质量检查和数据恢复活动导致约 0.01% 的观测站数据发生变化，这些数据被用作生成网格数据集的输入。同时，对季节性和年度网格的元数据中 _FillValue 分配进行了修正，以确保与数据集的其余部分保持一致。

这些数据的主要目的是促进对英国气候的监测以及气候变化、影响和适应的研究。数据集由气象局创建，并获得商业、能源与工业战略部（BEIS）和环境保护、食品及农村事务部（DEFRA）的财政支持，以支持公共气象服务客户组（PWSCG）、哈德莱中心气候计划以及英国气候预测（UKCP18）项目。补充19世纪和20世纪初数据可用性的数据恢复活动也获得了自然环境研究委员会（NERC资助编号：NE/L01016X/1）项目“分析英国历史上的干旱和水资源短缺”的资金。该数据集在开放政府许可下提供。