Surface Radiation Data Set - Heliosat (SARAH) - Edition 2.1
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The first update of the second edition of the Surface Solar Radiation Data Set - Heliosat (SARAH-2) is a satellite-based climate data record of the solar surface irradiance, the surface direct irradiance (direct horizontal and direct normalized), the sunshine duration, spectral information, and the effective cloud albedo derived from satellite-observations of the visible channels of the MVIRI and the SEVIRI instruments onboard the geostationary Meteosat satellites. The data are available from 1983 to 2017 and cover the region ±65° longitude and ±65° latitude (±60° longitude and ±60° latitude for the spectral information). The products are available as monthly and daily means, and as 30-min instantaneous data (sunshine duration is available as monthly and daily sum) on a regular latitude/longitude grid with a spatial resolution of 0.05° x 0.05° degrees. The data record is complemented with a comprehensive documentation of the algorithms used and the generation of the data record. Validation report and user guidance are available as well. This data set includes the data (1983 to 2015) from Edition 2.0 of the SARAH data record (doi: 10.5676/EUM_SAF_CM/SARAH/V002).
地表太阳辐射数据集——Heliosat第二版的首次更新版本(SARAH-2)是一套基于卫星的气候数据记录,涵盖地表太阳总辐照度、地表直接辐照度(含直接水平辐照度与直接归一化辐照度)、日照时长、光谱信息,以及由静止轨道气象卫星Meteosat搭载的MVIRI与SEVIRI仪器可见通道卫星观测数据反演得到的有效云反照率。该数据集时间跨度为1983年至2017年,空间覆盖范围为经纬度±65°区域(光谱信息的覆盖范围为经纬度±60°区域)。数据集产物包含月均、日均统计数据,以及30分钟瞬时观测数据(日照时长仅提供月累计与日累计总量),空间分辨率为0.05°×0.05°的规则经纬网格。本数据记录附带所用算法与数据生成流程的完整技术文档,同时提供验证报告与用户使用指南。本次发布的数据集包含SARAH数据记录2.0版(doi: 10.5676/EUM_SAF_CM/SARAH/V002)1983年至2015年的全部数据。




