{"id":"9103bdcc-f037-4dcf-a2c6-93c265f1d04e","title":"全国遥感年平均地表温度和冻结指数（2008）","title_en":"National annual average surface temperature and freezing index by remote sensing (2008)","serial":"冰冻圈","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。中文发表的成果参考以下规范注明： 数据来源于“寒区旱区科学数据中心”(http://westdc.westgis.ac.cn)，英文发表的成果依据以下规范注明： The data set is provided by Cold and Arid Regions Sciences Data Center at Lanzhou (http://westdc.westgis.ac.cn)","instructions":"文件格式：ESRI GRID格式\n数据读取方式：数据可用ArcGIS软件打开查看","description":"2008年全国遥感年平均地表温度和冻结指数是冉有华等（2015）基于MODIS Aqua/Terra逐日四次的5公里瞬时地表温度数据产品，发展了新的年平均地表温度和冻结指数估计方法，该方法利用上下午LST观测的平均获取日平均地表温度，方法的核心是如何恢复LST产品的缺失数据，该方法有两个特点：（1）将遥感观测到的日地表温度变幅进行了空间插值，利用插值获取的空间连续的日地表温度变幅，使一天只有一次的卫星观测数据得到应用；（2）利用了一个新的缺失数据时间序列滤波方法，即基于离散余弦变换的惩罚最小二乘回归方法。\n验证表明，年平均地表温度与冻结指数的精度只与原始MODIS LST的精度有关，即保持了MODIS LST产品的精度。可用于冻土制图及相关资源环境应用。","doi":"10.11888/Meteoro.tpdc.270556","projection":"lon-lat","language":"zh","share_type":"online","east":140.0,"west":60.0,"south":15.0,"north":55.0,"scale":null,"crs":null,"filesize":2.83,"share_policy":"a","ts_created":"2017-11-12T10:44:00+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-20T01:06:13.510061+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":"栅格数据","project":[10,11,15],"specials":["4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"Youhua Ran, Xin Li, Rui Jin, Jianwen Guo. Remote Sensing of the Mean Annual Surface Temperature and Surface Frost Number for Mapping Permafrost in China. Arctic. Antarctic & Alpine Research, 2015, 47(2):255-265. doi: http://dx.doi.org/10.1657/AAAR00C-13-306.","review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"9103bdcc-f037-4dcf-a2c6-93c265f1d04e","three_pole":null,"third_pole":null},"username":"李红星","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":17839}