{"id":"57498364-3550-455e-bfef-dcaff9be4ea7","title":"黑河上游山区山体阴影时空分布数据","title_en":"The spatial-temporal distribution of topographic shadows in the upper reaches of Heihe River Basin","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":"文件命名：阴影数据以netcdf4格式存储，文件的名称为“yyyyddd.txt”，其中yyyy代表年，ddd代表Julian日期，比如2018001.nc4。\n数据读取方式：该数据集中的所有nc4码文件可以通过编写程序读取，主体内容为0或1表征潜在山体阴影或者日照。\ndem100.tif为带投影信息的dem, lon.asc和lat.asc分别是各网格的经纬度，投影与dem100.tif相同（projr string :  +proj=lcc +lat_1=30 +lat_2=60 +lat_0=0 +lon_0=100 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs）","description":"黑河上游山区山体阴影时空分布图（2018年），本数据基于STRM数字高程模型和太阳位置变化(http://www.esrl.noaa.gov/gmd/grad/solcalc/azel.html)，采用通视分析计算得到，空间分辨率为100m，时间分辨率为15分钟，可用于冻土、积雪、生态水文和遥感研究等领域。利用黑河上游多个自动气象站观测的太阳辐射进行综合对比分析，对计算结果进行了精度验证，可以准确地捕捉气象站位置山体阴影的时空变化，其中时间误差20分钟以内。","doi":"","projection":"Lambert_Conformal_Conic","language":"zh","share_type":"offline","east":101.0,"west":96.0,"south":39.0,"north":40.0,"scale":null,"crs":null,"filesize":3000.0,"share_policy":"b","ts_created":"2019-12-22T16:19:09.302709+08:00","doi_type":null,"ts_updated":"2021-04-23T21:54:01.124499+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"马伟强","username":"wqma","email":"wqma@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":"Hourly","spatial_resolution":"10m - 100m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[6],"subtopics":{"metadata":"57498364-3550-455e-bfef-dcaff9be4ea7","three_pole":null,"third_pole":"XDA20100103"},"username":"XDA20100103","review_time":"2019-12-22T17:48:19.131644+08:00","protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":3185}