SPHERA High Resolution Reanalysis over Italy - Hourly surface air temperature (2-meter height) 1995-2003

SPHERA (High Resolution REAnalysis over Italy) is a convection-permitting regional reanalysis developed by ARPAE-Emilia Romagna and publicly available. The SPHERA domain covers Italy and the surrounding seas with a horizontal resolution of 2.2km. The temporal coverage corresponds to the period 1995-2020 and the dataset is available at hourly frequency. SPHERA reanalysis was developed using the Numerical Weather Prediction model COSMO (www.cosmo-model.org) nested in the global reanalysis ERA5 produced by ECMWF. Moreover, upper-air and surface observations were assimilated at the convection-permitting scale by the COSMO nudging scheme. This record reports the hourly surface air temperature at 2-meter height for the period 1995-2003. The full extension of the dataset over 1995-2020 is available over three different records due to space constraints: 1995-2003: https://zenodo.org/records/12567563 2004-2012: https://zenodo.org/records/12582246 2013-2020: https://zenodo.org/records/12582797 Update (2024-06-28): inconsistencies were noted in a subset of grib messages contained the first version of the repository (slightly different spatial domain size and missing messages at 00-hour timesteps) which have been corrected in the current version v2. Other fields currently available on Zenodo are the surface relative humidity at 2-meter height (also over three different records due to space constraints): 1995-2003: https://zenodo.org/uploads/12724026 2004-2012: https://zenodo.org/uploads/12724104 2013-2020: https://zenodo.org/uploads/12724140 and hourly accumulated total precipitation: https://zenodo.org/records/14617083 Details on the SPHERA dataset production, as well as data verification against surface observations are reported in peer-reviewed publications. See References.SPHERA（意大利区域高分辨率再分析数据集，High Resolution REAnalysis over Italy）是由ARPAE-艾米利亚-罗马涅（ARPAE-Emilia Romagna）开发的对流允许尺度区域再分析数据集，现已公开共享。该数据集的计算域涵盖意大利及其周边海域，水平分辨率达2.2千米，时间覆盖范围为1995年至2020年，数据以逐小时频率发布。SPHERA再分析数据集以欧洲中期天气预报中心（ECMWF）制作的全球再分析产品ERA5为背景场，采用嵌套式数值天气预报模式COSMO（www.cosmo-model.org）构建；同时通过COSMO逼近同化方案，将对流允许尺度下的高空与地面观测数据进行了同化。 本记录提供了1995-2003年期间2米高度处的逐小时地表气温数据。受存储空间限制，1995-2020年完整时段的数据集分为三个独立记录发布： 1995-2003年：https://zenodo.org/records/12567563 2004-2012年：https://zenodo.org/records/12582246 2013-2020年：https://zenodo.org/records/12582797 2024年6月28日更新说明：初代版本仓库中的部分GRIB报文存在不一致问题，具体表现为空间域范围存在细微偏差，且00时次的报文存在缺失，当前发布的v2版本已修复上述问题。 目前在Zenodo平台还可获取其他数据产品，其中包括： 1. 2米高度处的逐小时地表相对湿度（同样受存储空间限制，分为三个独立记录发布）： 1995-2003年：https://zenodo.org/uploads/12724026 2004-2012年：https://zenodo.org/uploads/12724104 2013-2020年：https://zenodo.org/uploads/12724140 2. 逐小时累积总降水量：https://zenodo.org/records/14617083 关于SPHERA数据集的生产细节，以及针对地面观测的验证结果已发表于同行评议学术期刊，详见参考文献部分。