{"id":"3f0246a3-a345-4f22-b20b-68341fe81258","title":"黑河生态水文遥感试验：非均匀下垫面地表蒸散发的多尺度观测试验-通量观测矩阵数据集（4号点大孔径闪烁仪）","title_en":"HiWATER: The multi-scale observation experiment on evapotranspiration over heterogeneous land surfaces (MUSOEXE-12)-Dataset of flux observation matrix (NO.4 large aperture scintillometer) (2012)","serial":"HiWATER","user_limit":"本数据由“黑河生态水文遥感试验（HiWATER）”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":"","description":"该数据集包含了通量观测矩阵中4号点的大孔径闪烁仪观测数据。4号点有两台型号分别为LAS_AR和zzlas的大孔径闪烁仪，北端为LAS_AR的接收端和zzlas_4的发射端，南端为LAS_AR的发射端和zzlas_4的接收端，其观测时间分别为2012年6月2日至2012年9月22日和2012年6月11日至2012年9月20日。站点位于甘肃省张掖市大满灌区农田内，下垫面包含玉米地、大棚、村庄、林地、果园，主要是玉米地。4号塔北端的经纬度是100.3785E, 38.86074N，南端的经纬度是100.3685E, 38.84682N，海拔1552.75m。大孔径闪烁仪的有效高度22.45m，光径长度是1854m,采样频率为1min。\n大孔径闪烁仪发布的数据为经过处理与质量控制后的30min平均数据，其中感热通量主要是结合自动气象站数据，基于莫宁-奥布霍夫相似理论通过迭代计算得到，主要的质量控制步骤包括：（1）剔除Cn2达到饱和的数据；（2）剔除解调信号强度较弱的数据；（3）剔除降水时刻及其前后一小时的数据；（4）剔除稳定条件下的弱湍流的数据（u*小于0.1m/s）。\n关于发布数据的两点说明：（1）4号点LAS数据以LAS_AR为主，缺失时刻以-6999标记。（2）数据表头：Date/Time ：日期/时间（格式：yyyy-mm-dd hh:mm:ss），Cn2 ：空气折射指数结构参数（单位：m-2/3），H_LAS ：感热通量（单位：W/m2）。\n多尺度观测试验或站点信息请参考Liu et al. (2016)，观测数据处理请参考Xu et al.(2013)。","doi":"10.3972/hiwater.105.2013.db","projection":"4326","language":"zh","share_type":"offline","east":100.3785,"west":100.3785,"south":38.86074,"north":38.86074,"scale":null,"crs":null,"filesize":0.16,"share_policy":"c","ts_created":"2016-07-10T07:12:34+08:00","doi_type":null,"ts_updated":"2021-04-19T22:52:40.962633+08:00","time_description":"","datas_group":0,"time_description_en":null,"data_format":"文本","project":[10,11,15],"specials":["ee3dfdf5-2e9f-4b61-a301-4fb49e30e3c2","977f949a-1a59-4ec7-9f65-e94454ef002a","9b31c458-b259-48b2-a3b0-db71a6c313ad","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"Liu SM, et al. MUlti-Scale Observation EXperiment on Evapotranspiration over heterogeneous land surfaces (MUSOEXE-12): Flux Observation Matrix. Journal of Geophysical Research, Manuscript in preparation.","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":[52],"subtopics":{"metadata":"3f0246a3-a345-4f22-b20b-68341fe81258","three_pole":null,"third_pole":null},"username":"胡晓利","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":10423}