{"id":"245435d6-c19a-4e92-b78b-23097646973f","title":"黑河综合遥感联合试验：扁都口加密观测区MODIS地面同步观测数据集（2008年3月14日）","title_en":"WATER: Dataset of ground truth measurements synchronizing with MODIS in the Biandukou foci experimental area on Mar. 14, 2008","serial":"黑河综合遥感联合试验","user_limit":"本数据由“黑河综合遥感联合试验”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。","instructions":null,"description":"2008年3月14日在扁都口加密观测区开展了MODIS的地面同步观测，测量参数包括：地表红外辐射温度、地表物理温度、土壤剖面重量含水量（0-1cm、1-3cm、3-5cm、5-10cm及10-20cm，部分样方只测量到了5cm）、表层土壤冻结深度。目的是反演土壤冻结深度。\n该日的地面测量时间范围是12:00-15:00，地面同步测量样方包括扁都口C1样地、扁都口W2样地、扁都口B2样地。\n1）土壤冻结深度的测量方法是通过用筷子插入土壤感觉其硬度或者将土壤表层冻结层直接挖出测量冻结层厚度，来判断冻融深度。直尺直接测量，当土壤硬度较大并且有冰晶时，认为土壤冻结；反之，则认为土壤未冻。土壤粗糙度数据可以认为在试验期间没有变化，可以从其它时间的粗糙度数据集中获得。 时间范围是11:37-12:11。\n2）含水量测量方法是：取0-1cm、1-3cm、3-5cm5-10cm、10-20cm土样，放入自封袋，然后用微波炉烘干，计算其土壤重量含水量。\n3）地表温度测量仪器是手持式红外温度计，同时测量了辐射温度和物理温度，并记录了测量地点的地表覆盖类型。测量时手持式红外温度计采用近距测量模式。地表物理温度采用手持式红外温度计附带的热电偶温度计。\n4）土壤粗糙度数据可以认为在试验期间没有变化，可以从其它时间的粗糙度数据集中获得。","doi":"10.3972/water973.0027.db","projection":"4326","language":"zh","share_type":"online","east":101.036,"west":100.881,"south":38.192,"north":38.312,"scale":null,"crs":null,"filesize":2.03,"share_policy":"a","ts_created":"2013-10-12T11:34:14+08:00","doi_type":null,"ts_updated":"2021-04-19T19:26:35.382848+08:00","time_description":null,"datas_group":3,"time_description_en":null,"data_format":"","project":[10,11,15],"specials":["2ee7e876-6f20-43a7-9c6c-979840a33ef2","a287b225-86f7-4583-9e92-c05b6d3036bc","6740cd00-6d20-4855-a39b-863af216b0a2","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"张立新, 常胜, 房倩, 梁星涛, 刘志刚, 刘晨州, 潘金梅, 彭丹青, 瞿瑛, 任华忠, 殷小军, 张勇攀, 张志玉, 赵少杰, 赵天杰, 郑越, 周纪, 张志玉. 黑河综合遥感联合试验：扁都口加密观测区MODIS地面同步观测数据集（2008年3月14日）. 北京师范大学; 中国科学院寒区旱区环境与工程研究所; 中国科学院遥感应用研究所. 2008. doi:10.3972/water973.0027.db [Zhang Lixin, Chang Sheng, Fang Qian, Liang Xingtao, Liu Zhigang, Liu Chenzhou, Pan Jinmei, Peng Danqing, Qu Ying, Ren Huazhong, Yan Xiaojun, Zhang Yongpan, Zhang Zhiyu, Zhao Shaojie, Zhao Tianjie, Zheng Yue, Zhou Ji, Zhang Zhiyu. WATER: Dataset of ground truth measurements synchronizing with MODIS in the Biandukou foci experimental area on Mar. 14, 2008. Beijing Normal University; Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences; Institute of Remote Sensing Applications, Chinese Academy of Sciences. 2008. doi:10.3972/water973.0027.db]","review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":null,"fund":[35,36],"subtopics":{"metadata":"245435d6-c19a-4e92-b78b-23097646973f","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":11982}