{"id":"f7c7c928-9b9d-4d2d-83ac-55c21795e590","title":"欧亚大陆长时间序列雪深数据集（1980-2016）","title_en":"Long-term series of daily snow depth in Euroasia (1980-2016)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据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），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"数据据每一天存放一个txt文件，每个文件由文件头（投影方式）和720*332的雪深矩阵组成，每个雪深代表一个0.25°* 0.25°的格网","description":"欧亚大陆雪深数据集采用被动微波遥感反演方法制作，数据覆盖时间从1980年到2016年，时间分辨率为逐日，覆盖范围为欧亚大陆，空间分辨率为0.25°。遥感反演方法采用动态亮温梯度算法，算法考虑积雪特性在时空和空间上的变化，建立了不同频率亮度温度差与实测雪深在空间和季节上的动态关系。长时间序列星载被动微波亮度温度数据来自SMMR、SSM/I和SSMI/S三个传感器。为保证不同传感器亮度温度在时间上的一致性，在雪深提取之前对不同传感器亮度温度进行了交叉订正。通过实测站点的验证表明欧亚大陆雪深数据相对偏差在30%以内。数据据每一天存放一个txt文件，每个文件由文件头（投影方式）和720*332的雪深矩阵组成，每个雪深代表一个0.25°* 0.25°的格网。\n数据的详细情况见欧亚大陆雪深数据集-数据说明。","doi":"10.11888/Snow.tpdc.270096","projection":"","language":"zh","share_type":"online","east":180.0,"west":40.0,"south":31.0,"north":70.0,"scale":null,"crs":"","filesize":979.0,"share_policy":"a","ts_created":"2018-08-29T15:57:21+08:00","doi_type":"","ts_updated":"2021-04-20T00:41:44.652710+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":"PDF","project":[10,11],"specials":["1832ecb3-70d0-4b5e-bdb5-2e9ff4ad1efe","f2a78cde-1c98-4241-94dc-7532eba32b80"],"cite":"Dai L.Y., Che T. and Ding Y.J. Inter-calibrating SMMR, SSM/I and SSMI/S data to improve the consistency of snow-depth products in China. Remote Sensing, 2015, 7: 7212-7230.","review_status":5,"review_invite":[],"review_editor":{"id":21057,"last_login":"2022-04-02T11:43:37.753860+08:00","username":"gecm","email":"gechm@lzb.ac.cn","is_active":true,"is_staff":true,"user_name":"盖春梅"},"data_sources":"","temporal_resolution":"Monthly","spatial_resolution":"0.25º - 0.5º","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[5],"subtopics":{"metadata":"f7c7c928-9b9d-4d2d-83ac-55c21795e590","three_pole":"XDA19070101","third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":5247}