{"id":"47016733-a1d5-4142-90bf-6f3db8420270","title":"北半球高纬地区中分辨率MODIS河湖冰覆盖度数据集（2002-2018）","title_en":"Moderate resolution MODIS river lake ice cover dataset in high latitude region of northern hemisphere (2002-2018)","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":"数据包括欧亚大陆会发生冻结现象的湖泊的逐日湖冰覆盖度以及额尔齐斯河-鄂毕河流域逐日河冰覆盖度。湖冰、河冰数据分别单独存放在河冰、湖冰文件夹下，数据格式为tif，文件的名称为“yyyyddd.tif”，其中yyyy代表年，ddd代表Julian日期，2003001.tif为2003年1月1日湖冰或河冰的覆盖情况。","description":"2002-2018年北半球高纬地区中分辨率MODIS河湖冰覆盖度数据集是基于MODIS的归一化积雪指数数据，利用SNOWMAP算法对晴空条件下的逐日河湖冰覆盖范围进行检测，并通过对河湖面的时间、空间的连续性等一系列步骤重新确定云覆盖条件下的河湖冰覆盖范围。通过这一系列的处理后，获得少云的逐日河湖冰覆盖度数据集。该数据集中获得的湖冰物候信息与被动微波数据的信息高度一致，平均相关系数为0.91，RMSE值在0.07至0.13之间变化。","doi":"10.11888/Glacio.tpdc.270868","projection":"WGS84","language":"zh","share_type":"protected","east":40.0,"west":180.0,"south":31.0,"north":70.0,"scale":null,"crs":null,"filesize":64194.56,"share_policy":"c","ts_created":"2020-07-31T02:52:47.035676+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T14:25:34.254465+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[10,11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"余武生","username":"isotope","email":"yuws@itpcas.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Daily","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[5],"subtopics":{"metadata":"47016733-a1d5-4142-90bf-6f3db8420270","three_pole":"XDA19070201","third_pole":null},"username":"邱玉宝","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":3343}