该数据集包含了2013年1月1日至2013年12月31日的10m塔涡动相关仪观测数据。站点位于河北省怀来县东花园镇，下垫面为水浇地玉米。观测点的经纬度是115.7880E, 40.3491N，海拔480m。涡动相关仪的采集频率是10Hz，架高为5 m，超声朝向是正北向，超声风速仪（Gill）与CO2/H2O分析仪（Li7500A）之间的距离是18 cm。
\n\n涡动相关仪发布的观测数据包括：日期/时间Date/Time，风向Wdir（°），水平风速Wnd（m/s），侧向风速标准差Std_Uy（m/s），超声虚温Tv（K），水汽密度H2O（g/m3），二氧化碳浓度CO2（mg/m3），摩擦速度Ustar（m/s），奥布霍夫长度，感热通量Hs（W/m2），潜热通量LE（W/m2），二氧化碳通量Fc（mg/(m2s)），感热通量的质量标识QA_Hs，潜热通量的质量标识QA_LE。感热、潜热、二氧化碳通量的质量标识分为三级（质量标识0:（Δst <30, ITC<30）; 1: （Δst <100, ITC<100）; 其余为2）。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": "自主生产（人工采集）
", "ds_process_way": "发布的数据是采用Eddypro软件对原始采集的10Hz数据进行后处理得到的30分钟数据，其处理的主要步骤包括：野点值剔除，延迟时间校正，坐标旋转（二次坐标旋转），角度订正，频率响应修正，超声虚温修正和密度（WPL）修正等。同时对各通量值进行质量评价，主要是大气平稳性（Δst）和湍流相似性特征（ITC）的检验。
", "ds_quality": "对处理后输出的30min通量值也进行了筛选：（1）剔除仪器出错时的数据；（2）剔除降水前后1h的数据；（3）剔除10Hz原始数据每30min内缺失率大于10%的数据；（4）剔除夜间弱湍流的观测数据（u*小于0.1m/s）。观测数据的平均周期为30分钟，一天48个数据，缺失数据标记为-6999。2月4日至2月28日由于数据存储卡的问题，数据缺失；7月1日至7月16日由于电源转换器出现问题，数据缺失。
", "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": 4831669, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "5c03c290-9b64-481d-8e5a-9e04e9668faa.png", "ds_thumb_from": 0, "ds_ref_way": "刘紹民，海河流域多尺度地表通量与气象要素观测数据集：怀来站-涡动相关仪(2013年)，国家特殊环境、特殊功能 观测研究台站共享平台，2019，doi：10.12072/Westdc.002.2020.db", "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": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-17 17:06:15", "last_updated": "2023-05-16 17:34:53", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2020.432", "i18n": { "en": { "title": "Multi-scale surface flux and meteorological element observation dataset in the Haihe River Basin: vortex correlator at Huailai Station (2013)", "ds_format": "", "ds_source": "Self production (manual collection)
", "ds_quality": "The 30 min flux values output after processing were also screened: (1) the data of instrument error; (2) the data of 1 h before and after precipitation; (3) the data of 10 Hz original data missing more than 10% every 30 min; (4) the observation data of weak turbulence at night (U * less than 0.1 M / s) were eliminated. The average period of observation data is 30 minutes. There are 48 data in a day, and the missing data is marked as - 6999. From February 4 to February 28, the data was missing due to the problem of the data storage card; from July 1 to July 16, the data was missing due to a problem with the power converter.
", "ds_ref_way": "\nLiu Shaomin, multi-scale surface fluxes and meteorological elements observation data set of Haihe River Basin: vortex correlator at Huailai Station in 2013, national special environment and special function observation and research station sharing platform, 2019, DOI: 10.12072/westdc.002.2020.db", "ds_abstract": "This data set contains the observation data of 10 m tower eddy covariance instrument from January 1, 2013 to December 31, 2013. 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 acquisition frequency of vortex correlator is 10Hz, the frame height is 5 m, the ultrasonic direction is due north, and the distance between the ultrasonic anemometer (Gill) and the CO2 / H2O analyzer (li7500a) is 18 cm.
\nThe observational data released by eddy correlator include date / time, wind direction WDIR (°), horizontal wind speed wnd (M / s) and standard deviation of lateral wind speed STD_ Uy (M / s), ultrasonic virtual temperature TV (k), water vapor density H2O (g / m3), carbon dioxide concentration CO2 (mg / m3), friction velocity ustar (M / s), obuhof length, sensible heat flux HS (w / m2), latent heat flux Le (w / M2), carbon dioxide flux FC (mg / (M2S)), quality identification of sensible heat flux QA_ HS, quality identification of latent heat flux QA_ LE。 The quality identification of sensible heat, latent heat and carbon dioxide flux can be divided into three levels (quality identification 0: (Δ st & lt; 30, ITC & lt; 30); 1: (Δ st & lt; 100, ITC & lt; 100); the rest is 2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30; the 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 released data is 30 minutes data obtained by post-processing the original collected 10Hz data by eddypro software. The main processing steps include: outlier value elimination, delay time correction, coordinate rotation (secondary coordinate rotation), angle correction, frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction. At the same time, the quality evaluation of each flux value is mainly the test of atmospheric stability (Δ st) and turbulence similarity characteristics (ITC).
", "ds_ref_instruction": "\nWhen using the data, users should refer to the data and articles according to the requirements, and declare the data source. Please use this data to publish the article Feed to data provider（ smliu@bnu.edu.cn ）。" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 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": [ "涡动相关仪", "感热通量", "潜热通量" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "怀来县", "河北省", "海河流域" ], "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": "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_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" }