该数据集包含了2013年1月1日至2013年12月31日的大孔径闪烁仪观测数据
\n\n关于发布数据的几点说明：（1）LAS数据以BLS450为主，缺失时刻由zzlas观测补充，两者都缺失则以-6999标记。（2）数据表头：Date/Time：日期/时间，Cn2：空气折射指数结构参数（m-2/3），H_LAS：感热通量（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
\n\n观测试验或站点介绍请参考杨光超等(2015)，数据处理请参考Liu et al. (2013)。
", "ds_source": "分别架设了两台型号为BLS450和zzlas的大孔径闪烁仪。站点位于河北省怀来县东花园镇，下垫面玉米。观测点的经纬度是115.7880E, 40.3491N，海拔480m。大孔径闪烁仪的有效高度为14m，光径长度是1870m，发射端经纬度是115.8023E，40.3596N，接收端的经纬度是115.7825E，40.3522N。BLS450和zzlas的采集频率分别为5Hz和1Hz，平均为1min输出。
", "ds_process_way": "大孔径闪烁仪原始数据为1min，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，在迭代计算过程中，对于BLS450，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。
", "ds_quality": "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）。
", "ds_acq_start_time": "2013-01-01 00:00:00", "ds_acq_end_time": "2013-12-31 00:00:00", "ds_acq_place": "河北省怀来县海河流域", "ds_acq_lon_east": 115.76666666666667, "ds_acq_lat_south": 40.349722222222226, "ds_acq_lon_west": 115.76666666666667, "ds_acq_lat_north": 40.349722222222226, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 10372212, "ds_files_count": 8, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "f0a251b9-e5bf-4e45-84c6-737c8e585836.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "用户在使用数据时需按要求对数据及文章进行引用，并对数据来源进行声明。请用户将使用本数据正式发表的文章反馈给数据提供者 （smliu@bnu.edu.cn）。", "ds_from_station": null, "organization_id": "9c4867b1-5cb1-4de0-abeb-df42547bf41e", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-10-10 16:06:15", "last_updated": "2023-08-23 16:46:13", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.429", "i18n": { "en": { "title": "Multi scale observation data set of surface fluxes and meteorological elements in Haihe River Basin: Huailai station large aperture scintillation meter (2013)", "ds_format": "excel", "ds_source": "Two large aperture scintillators, bls450 and zzlas, were set up respectively. The site is located in donghuayuan Town, Huailai County, Hebei Province. The longitude and latitude of the observation point are 115.7880e, 40.3491n and 480m above sea level. The effective height of the large aperture scintillator is 14m, the optical path length is 1870m, the longitude and latitude of the transmitting end are 115.8023e, 40.3596n, and the longitude and latitude of the receiving end are 115.7825e, 40.3522n. The acquisition frequency of bls450 and zzlas is 5Hz and 1Hz respectively, with an average output of 1min.
", "ds_quality": "The main quality control steps include: (1) removing the data when cn2 reaches saturation; (2) removing the data with weak demodulation signal intensity; (3) removing the data at precipitation time and one hour before and after precipitation; (4) removing the data with weak turbulence under stable conditions (U * less than 0.1m/s).
", "ds_ref_way": "", "ds_abstract": "This data set contains the observation data of large aperture scintillator from January 1, 2013 to December 31, 2013
\nSome notes on the data release are as follows: (1) the data of Las are mainly bls450, the missing time is supplemented by zlas observation, and the missing time of both is marked with - 6999. (2) Data header: date / time: date / time, cn2: refractive index structure parameter of air (m-2 / 3), h_la: sensible heat flux (w / m2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30; data is stored in *. XLS format
\nPlease refer to Yang Guangchao et al. (2015) for observation test or site introduction and Liu et al. (2013) for data processing.
", "ds_time_res": "", "ds_acq_place": "Haihe River Basin, Huailai County, Hebei Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The original data of the large aperture scintillation instrument is 1min, and the published data is 30min average data after processing and quality control. The sensible heat flux is mainly obtained through iterative calculation based on the Monin obkhov similarity theory in combination with the data of the automatic weather station. In the iterative calculation process, for bls450, thiermann and Grassl are selected, For zzlas, Andreas, 1988 is chosen as the stability universal function.
", "ds_ref_instruction": " When using data, users need to reference the data and articles as required, and declare the data source. Users are requested to give feedback to the data provider (smliu@bnu.edu.cn) on the articles officially published using this data." } }, "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": [ "大孔径闪烁仪", "感热通量" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "河北省", "海河流域", "怀来县" ], "ds_time_tags": [ 2013 ], "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": "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" } ], "ds_meta_authors": [ { "true_name": "李怀香", "email": "476426434@qq.com", "work_for": "北京师范大学地理学与遥感科学学院", "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": "气象" }