数据源描述
本数据集通过混合像元雪水当量反演算法，基于IDL标准产品生产系统，利用SMMR（1980-1987）、SSMI（1988-2008）、SSMIS（2009-2020）卫星遥感亮温数据生产而来。
数据集摘要
针对中国积雪分布区，基于混合像元雪水当量反演算法，利用星载被动微波遥感亮温数据制备了1980-2020年空间分辨率为25km的逐日雪水当量/雪深数据集。该数据集以HDF5文件格式存储，每个HDF5文件包含32个数据要素，其中包括雪深（cm）、雪水当量（mm）、经纬度、亮温(升降轨)、质量标识符和地物类型覆盖度等。同时为了快速预览积雪分布情况，逐日文件包含雪水当量缩略图，以png格式存储。本数据集将根据实时卫星遥感数据和算法更新情况（目前到2020年1月份）进行持续的补充和完善，并采用完全开放共享。
项目支持信息
| # | 编号 | 名称 | 类型 |
| 1 | 2017FY100500 | 中国积雪特性及分布调查 | 科技基础性工作专项 |
为保障平台科技资源的权益、扩展平台中心的服务、提升科技资源的应用潜力，请资源使用者在使用资源所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明资源来源和资源作者。
蒋玲梅, 杨建卫, 戴礼云, 李晓峰, 邱玉宝, 武胜利, 李震，中国1980-2020年雪水当量25公里逐日产品，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.I-SNOW.db0002.2020
| # | 标题 | 格式 | 文件大小 |
| 1 | DMSP_SMMR_SWE_19800101_DAILY_025KM_V1.2.png | None | 168.6 kB |
| 2 | DMSP_SMMR_SWE_19800101_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 3 | DMSP_SMMR_SWE_19800103_DAILY_025KM_V1.2.png | None | 177.3 kB |
| 4 | DMSP_SMMR_SWE_19800103_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 5 | DMSP_SMMR_SWE_19800111_DAILY_025KM_V1.2.png | None | 165.1 kB |
| 6 | DMSP_SMMR_SWE_19800113_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 7 | DMSP_SMMR_SWE_19800115_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 8 | DMSP_SMMR_SWE_19800125_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 9 | DMSP_SMMR_SWE_19800129_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 10 | DMSP_SMMR_SWE_19800202_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 11 | DMSP_SMMR_SWE_19800214_DAILY_025KM_V1.2.png | None | 176.2 kB |
| 12 | DMSP_SMMR_SWE_19800113_DAILY_025KM_V1.2.png | None | 176.9 kB |
| 13 | DMSP_SMMR_SWE_19800121_DAILY_025KM_V1.2.png | None | 178.8 kB |
| 14 | DMSP_SMMR_SWE_19800129_DAILY_025KM_V1.2.png | None | 176.3 kB |
| 15 | DMSP_SMMR_SWE_19800131_DAILY_025KM_V1.2.png | None | 181.4 kB |
| 16 | DMSP_SMMR_SWE_19800204_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 17 | DMSP_SMMR_SWE_19800111_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 18 | DMSP_SMMR_SWE_19800117_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 19 | DMSP_SMMR_SWE_19800119_DAILY_025KM_V1.2.png | None | 173.7 kB |
| 20 | DMSP_SMMR_SWE_19800121_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 21 | DMSP_SMMR_SWE_19800123_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 22 | DMSP_SMMR_SWE_19800127_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 23 | DMSP_SMMR_SWE_19800131_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 24 | DMSP_SMMR_SWE_19800204_DAILY_025KM_V1.2.png | None | 167.9 kB |
| 25 | DMSP_SMMR_SWE_19800208_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 26 | DMSP_SMMR_SWE_19800210_DAILY_025KM_V1.2.png | None | 179.1 kB |
| 27 | DMSP_SMMR_SWE_19800212_DAILY_025KM_V1.2.png | None | 179.0 kB |
| 28 | DMSP_SMMR_SWE_19800214_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 29 | DMSP_SMMR_SWE_19800115_DAILY_025KM_V1.2.png | None | 178.8 kB |
| 30 | DMSP_SMMR_SWE_19800117_DAILY_025KM_V1.2.png | None | 170.8 kB |
| 31 | DMSP_SMMR_SWE_19800119_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 32 | DMSP_SMMR_SWE_19800123_DAILY_025KM_V1.2.png | None | 177.3 kB |
| 33 | DMSP_SMMR_SWE_19800125_DAILY_025KM_V1.2.png | None | 177.3 kB |
| 34 | DMSP_SMMR_SWE_19800127_DAILY_025KM_V1.2.png | None | 175.3 kB |
| 35 | DMSP_SMMR_SWE_19800202_DAILY_025KM_V1.2.png | None | 171.3 kB |
| 36 | DMSP_SMMR_SWE_19800206_DAILY_025KM_V1.2.png | None | 163.3 kB |
| 37 | DMSP_SMMR_SWE_19800208_DAILY_025KM_V1.2.png | None | 176.7 kB |
| 38 | DMSP_SMMR_SWE_19800206_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 39 | DMSP_SMMR_SWE_19800210_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
| 40 | DMSP_SMMR_SWE_19800212_DAILY_025KM_V1.2.HDF | None | 4.6 MB |
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