National Cryosphere Desert Data Center

1.Since 2019, the repository has accumulated 56,308 registered users and hosted 4,096 datasets over the same period, providing open data services for 7 years. If included in the repository list, it falls under the category of "Earth, Environmental and Space Sciences". 2.The repository accepts submissions from the global scientific community, supporting a maximum single file size of 4GB and an individual cumulative upload limit of no more than 3TB, with the entire process free of charge. 3.Data users must register and provide information such as email address, institution, and name to access data; data depositors can independently CC BY 4.0 to license their datasets. 4.For sensitive data, the repository offers two types of controlled access: online access requires submitting an application to obtain data directly, while offline access requires filling out an application form, which will be sent to the data provider for review and approval before data is granted. 5.Confidential peer review of hosted datasets is supported. After users complete metadata and submit data entities, administrators review the metadata. For metadata that meets formatting requirements, the dataset is sent to the "Datasets Pending Review" section in the reviewers' user space, allowing reviewers to log into the platform to download and review the data. 6.After a dataset is published, a DOI (Digital Object Identifier) is assigned to it. Users can link this DOI in their papers to achieve the binding between the dataset and the paper. 7.Datasets cannot be deleted after publication but can be modified; modifications will generate a new version of the dataset, and the repository has established a version management system. 8.DOIs are assigned as unique identifiers for datasets. Regarding data upload support: files smaller than 500MB are recommended to be uploaded online, while files larger than 500MB are recommended to be uploaded via FTP. Metadata management adheres to the ISO 19115 standard and supports submission in XML format.

1. 自2019年起，该数据集仓储库累计注册用户达56308名，同期托管数据集4096个，累计提供开放数据服务已满7年。若被纳入仓储库名录，其所属分类为「地球、环境与空间科学」。
2. 本仓储库接收全球科学界的投稿，支持单文件最大尺寸为4GB，个人累计上传上限不超过3TB，且全流程免费。
3. 数据用户需完成注册并提供电子邮箱、所属机构及姓名等信息后方可访问数据；数据上传者可自主采用CC BY 4.0协议为其数据集授权。
4. 针对敏感数据，仓储库提供两类受控访问模式：在线访问需提交申请以直接获取数据；离线访问则需填写申请表单，该表单将提交至数据提供方完成审核，通过后方可授予数据访问权限。
5. 本仓储库支持托管数据集的保密同行评审。用户完成元数据（Metadata）提交与数据实体上传后，由管理员对元数据进行审核。对于符合格式要求的元数据，系统会将数据集推送至评审者用户空间的「待评审数据集」专区，评审者可登录平台下载并开展评审工作。
6. 数据集发布后，将为其分配DOI（Digital Object Identifier，数字对象标识符），用户可在学术论文中关联该DOI，以实现数据集与论文的绑定。
7. 数据集发布后不可删除，但可进行修改；修改操作将生成数据集的新版本，仓储库已建立完善的版本管理体系。
8. DOI作为数据集的唯一标识符进行分配。关于数据上传支持：建议小于500MB的文件采用在线上传方式，大于500MB的文件则建议通过FTP（File Transfer Protocol，文件传输协议）上传。元数据管理遵循ISO 19115标准，支持XML格式提交。

搜集汇总

背景与挑战

背景概述

该数据集平台是一个专注于地球与环境科学领域的冰冻圈、冻土及沙漠科学数据存储库，提供超过4000个数据集并支持数据提交与开放获取服务。平台具备用户注册、数据审核、DOI分配及版本管理功能，同时为敏感数据提供受控访问机制。