spei03.nc

<b>Licensing</b>The Global 0.5° gridded SPEI dataset is made available under the Open Database License (https://opendatacommons.org/licenses/odbl/1-0/). Any rights in individual contents of the database are licensed under the Database Contents License (https://opendatacommons.org/licenses/dbcl/1-0/).What follows is a human-readable summary of the ODbL 1.0 license. Please, read the full ODbL 1.0 license text for the exact terms that apply.Users of the dataset are free to:<b>Share</b>: copy, distribute and use the database, either commercially or non-commercially.<b>Create</b>: produce derivative works from the database.<b>Adapt</b>: modify, transform and build upon the database.Under the following conditions:<b>Attribution</b>: You must attribute any public use of the database, or works produced from the database, by citing one or more of the papers referenced in the References section below. For any use or redistribution of the database, or works produced from it, you must make clear to others the license of the original database.<b>Share-Alike</b>: If you publicly use any adapted version of this database, or works produced from an adapted database, you must also offer that adapted database under the ODbL.Details of the SPEIbase and the comparison with other available drought data sets can be fammel in:<br>Vicente-Serrano et al. (2010)Berguería et al. (2010)

**许可协议**
本全球0.5°格点标准化降水蒸散指数（Standardized Precipitation Evapotranspiration Index, SPEI）数据集采用开放数据库许可（Open Database License, ODbL，https://opendatacommons.org/licenses/odbl/1-0/）发布。数据库内各单项内容的相关权利，依照数据库内容许可（Database Contents License, DBCL，https://opendatacommons.org/licenses/dbcl/1-0/）进行授权。
以下为ODbL 1.0许可的通俗摘要，具体适用条款请以完整的ODbL 1.0许可文本为准。
数据集使用者可享有以下自由：
**共享**：以商业或非商业用途复制、分发并使用该数据库。
**创作**：基于该数据库生成衍生作品。
**改编**：对该数据库进行修改、转换并在此基础上开展二次开发。
需遵守以下条件：
**署名**：若公开使用该数据库或基于该数据库生成的作品，必须引用下文“参考文献”部分列出的一篇或多篇论文。无论以何种方式使用或重新分发该数据库及其衍生作品，均需向他人明确说明原始数据库的许可协议。
**相同方式共享**：若公开使用该数据库的改编版本或基于改编数据库生成的作品，必须同样以ODbL许可发布该改编版本。
SPEIbase数据集的详细信息及与其他现有干旱数据集的对比内容可参阅：<br>
Vicente-Serrano 等（2010）
Berguería 等（2010）