该数据集包含了黑河水文气象观测网上游阿柔站的大孔径闪烁仪通量观测数据。上游阿柔站分别架设了两台型号为德国BLS450_AR和国产zzlas的大孔径闪烁仪，北塔为zzlas的接收端和BLS450_AR的发射端，南塔为zzlas的发射端和BLS450_AR的接收端。其中zzlas观测时间段为2014年1月1日至2014年12月31日，BLS450_AR的观测时间为2014年1月19日至2014年12月12日。站点位于青海省祁连县阿柔乡草达坂村，下垫面是高寒草地。北塔的经纬度是100.4712E，38.0568N，南塔的经纬度是100.4572E，38.0384N，海拔高度约3033m。大孔径闪烁仪的有效高度9.5m，光径长度是2390m，采样频率是1min。
大孔径闪烁仪原始观测数据为1min，发布的数据为经过处理与质量控制后的30min数据，其中感热通量主要是结合自动气象站观测数据，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（BLS450_AR：Cn2 >7.25E-14，zzlas：Cn2 >7.84 E-14）；
（2）剔除解调信号强度较弱的数据（BLS450_AR: Average X Intensity<1000，zzlas: Demod>-20mv）；
（3）剔除降水时刻的数据；
（4）剔除稳定条件下的弱湍流的数据（u*小于0.1m/s）。
在迭代计算过程中，对于BLS450_AR，选取Thiermann and Grassl, 1992的稳定度普适函数；对于zzlas，选取Andreas, 1988的稳定度普适函数。详细介绍请参考Liu et al.(2011, 2013)。
关于发布数据的几点说明：
（1）上游LAS数据以BLS450_AR为主，缺失时刻由zzlas观测补充，两者都缺失则以-6999标记。
（2）缺失时段：2014年8月10日至16日、2014年10月3日至13日、2014年10月17日至20日由于仪器故障，期间数据缺失。
（3）数据表头：Date/Time ：日期/时间（格式：yyyy-m-d h:mm），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）。数据时间的含义，如0:30代表0:00-0:30的平均；数据以*.xls格式存储，详细信息请查参考文献。
水文气象网或站点信息请参考Li et al. (2013)，观测数据处理请参考Liu et al.(2011)。
", "ds_source": "上游阿柔站分别架设了两台型号为德国BLS450_AR和国产zzlas的大孔径闪烁仪，北塔为zzlas的接收端和BLS450_AR的发射端，南塔为zzlas的发射端和BLS450_AR的接收端。其中zzlas观测时间段为2014年1月1日至2014年12月31日，BLS450_AR的观测时间为2014年1月19日至2014年12月12日。站点位于青海省祁连县阿柔乡草达坂村，下垫面是高寒草地。北塔的经纬度是100.4712E，38.0568N，南塔的经纬度是100.4572E，38.0384N，海拔高度约3033m。大孔径闪烁仪的有效高度9.5m，光径长度是2390m，采样频率是1min。
", "ds_process_way": "仪器自动观测，人工校准。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2014-01-01 00:00:00", "ds_acq_end_time": "2014-12-31 00:00:00", "ds_acq_place": "黑河流域, 阿柔超级站, 上游寒区水文试验区", "ds_acq_lon_east": 100.47111111111111, "ds_acq_lat_south": 38.33833333333334, "ds_acq_lon_west": 100.45694444444445, "ds_acq_lat_north": 38.50666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 571142, "ds_files_count": 2, "ds_format": "word", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "4a7729e3-27c0-4910-9365-0fb53026284a.png", "ds_thumb_from": 0, "ds_ref_way": "刘绍民，黑河生态水文遥感试验：水文气象观测网数据集（上游阿柔超级站大孔径闪烁仪-2014），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.NIEER.db0057.2020", "paper_ref_way": "", "ds_ref_instruction": "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。", "ds_from_station": null, "organization_id": "c94b3578-20da-4346-9de9-c702b6ca8983", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596 ", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2021-08-27 16:31:24", "last_updated": "2021-08-27 16:31:24", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1627", "i18n": { "en": { "title": "Eco hydrological remote sensing experiment of Heihe River: data set of Hydrometeorological observation network", "ds_format": "", "ds_source": "Two sets of German bls450 have been set up at the upstream ARJO station_ AR and domestic large aperture scintillator of zzlas, and the North Tower is the receiving end of zzlas and bls450_ At the transmitting end of AR, the south tower is the transmitting end of zzlas and bls450_ Receiving end of AR. The observation period of zzlas is from January 1, 2014 to December 31, 2014, bls450_ AR was observed from January 19, 2014 to December 12, 2014. The station is located in caodaban village, aro Township, Qilian County, Qinghai Province, with alpine grassland on the underlying surface. The longitude and latitude of the north tower are 100.4712e, 38.0568n, and the longitude and latitude of the south tower are 100.4572e, 38.0384n, with an altitude of about 3033m. The effective height of the large aperture scintillator is 9.5m, the optical path length is 2390m, and the sampling frequency is 1min
", "ds_quality": "Good data quality
", "ds_ref_way": "Liu Shaomin, Heihe River Ecological hydrological remote sensing experiment: hydrometeorological observation network data set (large aperture scintillation instrument of upstream Ajou super station-2014), national glacier, frozen soil and desert Science Data Center (www.ncdc. Ac.cn), 2020, DOI: 10.12072/ncdc.nieer.db0057.2020", "ds_abstract": "The data set contains the flux observation data of large aperture scintillator at youa Rou station on the Heihe hydrometeorological observation network. Two sets of German bls450 have been set up at the upstream ARJO station_ AR and domestic large aperture scintillator of zzlas, and the North Tower is the receiving end of zzlas and bls450_ At the transmitting end of AR, the south tower is the transmitting end of zzlas and bls450_ Receiving end of AR. The observation period of zzlas is from January 1, 2014 to December 31, 2014, bls450_ AR was observed from January 19, 2014 to December 12, 2014. The station is located in caodaban village, aro Township, Qilian County, Qinghai Province, with alpine grassland on the underlying surface. The longitude and latitude of the north tower are 100.4712e, 38.0568n, and the longitude and latitude of the south tower are 100.4572e, 38.0384n, with an altitude of about 3033m. The effective height of the large aperture scintillator is 9.5m, the optical path length is 2390m, and the sampling frequency is 1min
\nThe original observation data of the large aperture scintillator is 1min, and the released data is 30min data after processing and quality control. The sensible heat flux is mainly obtained by iterative calculation based on Monin obhoff similarity theory in combination with the observation data of the automatic weather station. The main quality control steps include:
\n（ 1) Eliminate the data when cn2 reaches saturation (bls450_ AR：Cn2 >7.25E-14，zzlas：Cn2 >7.84 E-14）；
\n（ 2) Eliminate data with weak demodulated signal strength (bls450_ AR: Average X Intensity<1000，zzlas: Demod>-20mv）；< p> & emsp;（ 3) Eliminate the data of precipitation time< p> & emsp;（ 4) Eliminate the data of weak turbulence under stable conditions (U * less than 0.1M / s)< p> & emsp; During iterative calculation, for bls450_ AR, select the stability universal function of thiermann and Grassl, 1992; For zzlas, the stability universal function of Andreas, 1988 is selected. For details, please refer to Liu et al. (2011, 2013)< p> & emsp; Some notes on publishing data: < p > & emsp& emsp;（ 1) Upstream Las data is represented by bls450_ AR is dominant, and the missing time is supplemented by zzlas observation, and both are marked with - 6999< p> & emsp;（ 2) Missing period: data was missing from August 10 to 16, 2014, October 3 to 13, 2014 and October 17 to 20, 2014 due to instrument failure< p> & emsp;（ 3) Data header: date / time: date / time (Format: yyyy-m-d H: mm), cn2: structural parameter of air refractive index (unit: m-2 / 3), H_ Las: sensible heat flux (unit: w / m2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30; The data is stored in *. XLS format. Please refer to the references for details< p> & emsp; For hydrometeorological network or station information, please refer to Li et al. (2013), and for observation data processing, please refer to Liu et al. (2011)
", "ds_time_res": "年", "ds_acq_place": "Heihe River Basin, a rou super station, upstream cold region, hydrological test area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Automatic observation and manual calibration of the instrument
", "ds_ref_instruction": " \nThis data is generated by \"Heihe eco hydrological remote sensing experiment (hiwater)\". When using the data, users should clearly state the source of the data in the text and quote the reference method provided by this metadata in the reference part." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "https://creativecommons.org/licenses/by/4.0/", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "感热通量", "大孔径闪烁仪", "水文气象观测网" ], "ds_subject_tags": [ "水文气象学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "上游寒区水文试验区", "阿柔超级站" ], "ds_time_tags": [ 2014 ], "ds_contributors": [ { "true_name": "刘绍民", "email": "smliu@bnu.edu.cn", "work_for": "北京师范大学", "country": "中国" }, { "true_name": "李新", "email": "lixin@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "车涛", "email": "chetao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "徐自为", "email": "xuzw@bnu.edu.cn", "work_for": "北京师范大学地理学与遥感科学学院", "country": "中国" }, { "true_name": "谭俊磊", "email": "tanjunlei@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "刘绍民", "email": "smliu@bnu.edu.cn", "work_for": "北京师范大学", "country": "中国" } ], "ds_managers": [ { "true_name": "徐自为", "email": "xuzw@bnu.edu.cn", "work_for": "北京师范大学地理学与遥感科学学院", "country": "中国" } ], "category": "遥感及产品" }