16年意大利雷达降水数据整合成可云访问的压缩数据立方体
IT-DPC-SRI: A Cloud-Optimized Archive of Italian Radar Precipitation (2010-2025)
- 将16年分散的意大利雷达数据统一为标准化的云优化Zarr格式
- 覆盖1200×1400公里区域，1公里分辨率，共超百万个时间步
- 适合气象研究、气候分析及需要高精度降水数据的用户
我们提出IT-DPC-SRI，首个公开可用的意大利长期天气雷达降水估计档案，覆盖2010至2025年共16年。该数据集包含意大利民防部门国家雷达拼接图的表面降水强度（SRI）观测，经标准化处理为分析就绪的云优化（ARCO）Zarr数据立方体。数据涵盖15至5分钟时间分辨率，覆盖1200×1400公里区域，空间分辨率为1公里，原始7TB数据压缩至51GB。针对历史数据分散于不同格式（OPERA BUFR、HDF5、GeoTIFF），且域范围与投影不一致的问题，本工作对全记录进行重处理，形成统一存储。数据以静态版本快照形式发布于Zenodo，支持通过欧洲气象中心欧洲天气云实现原生云访问，并可在ArcoDataHub平台获取持续更新的实时版本。此发布填补了欧洲雷达数据的空白，因意大利未参与EUMETNET OPERA泛欧雷达合成。数据采用CC BY-SA 4.0许可开放。
原文摘要 · Abstract (English)
We present IT-DPC-SRI, the first publicly available long-term archive of Italian weather radar precipitation estimates, spanning 16 years (2010--2025). The dataset contains Surface Rainfall Intensity (SRI) observations from the Italian Civil Protection Department's national radar mosaic, harmonized into a coherent Analysis-Ready Cloud-Optimized (ARCO) Zarr datacube. The archive comprises over one million timesteps at temporal resolutions from 15 to 5 minutes, covering a $1200\times1400$ kilometer domain at 1 kilometer spatial resolution, compressed from 7TB to 51GB on disk. We address the historical fragmentation of Italian radar data - previously scattered across heterogeneous formats (OPERA BUFR, HDF5, GeoTIFF) with varying spatial domains and projections - by reprocessing the entire record into a unified store. The dataset is accessible as a static versioned snapshot on Zenodo, via cloud-native access on the ECMWF European Weather Cloud, and as a continuously updated live version on the ArcoDataHub platform. This release fills a significant gap in European radar data availability, as Italy does not participate in the EUMETNET OPERA pan-European radar composite. The dataset is released under a CC BY-SA 4.0 license.
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