{"id":"3e2e155d-4afc-4b74-8015-7508cb3a7a8f","title":"中国西南地区基于MODIS MCD18C2的500m光合有效辐射数据产品 (2002-2021)","title_en":"500m Photosynthetic Active Radiation data based on MODIS MCD18C2 in Southwest China (2002-2021)","serial":"2002-2021","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":"所有数据均以tif格式存储，以射出长波辐射为例，文件的名称为“MODIS_PAR_yyyy”。其中PAR代表光合有效辐射，yyyy代表年。比如MODIS_PAR_2002代表2002年的光合有效辐射数据\n读取方式：本数据集中所有文件为tif格式文件，可以通过arcgis等软件打开展示。","description":"该数据集包括了2002-2021年500m的光和有效辐射数据。所有数据均来自于Google Earth Engine。MCD18C2 Version 6.1是中分辨率成像光谱仪(MODIS) Terra 和 Aqua 联合光合有效辐射(PAR)栅格3级产品，每天生产0.05度(赤道5600米)的分辨率，估计每3小时产生一次 PAR。PAR 是可见光(400-700纳米)的入射太阳辐射，是解决各种科学和应用问题的陆地表面模型中的一个重要变量。MCD18产品基于一个原型算法，该算法利用 MODIS 数据的多时相特征来推导地表反射率，然后使用查找表(LUT)方法计算入射 PAR。","doi":"","projection":"WGS84","language":"zh","share_type":"protected","east":113.0,"west":96.0,"south":20.5,"north":35.0,"scale":500,"crs":null,"filesize":424.0,"share_policy":"a","ts_created":"2023-03-06T21:35:22.303960+08:00","doi_type":"拥有自主知识产权","ts_updated":"2023-03-09T18:49:33.053086+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":null,"project":[10],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"3e2e155d-4afc-4b74-8015-7508cb3a7a8f","three_pole":null,"third_pole":null},"username":"董冠宇","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":820}