该数据集包含了2013年7月12日至2013年12月31日的黑河水文气象观测网下游混合林站的涡动相关仪观测数据。站点位于内蒙古额济纳旗四道桥，下垫面是胡杨与柽柳。观测点的经纬度是101.1335E, 41.9903N，海拔874 m。涡动相关仪的架高22m，采样频率是10Hz，超声朝向是正北向，超声风速温度仪与CO2/H2O分析仪之间的距离是17cm。
涡动相关仪的原始观测数据为10Hz，发布的数据是采用Edire软件处理的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），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。对Edire软件输出的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原始数据中每30min内缺失率大于3%的数据；
（4）剔除夜间弱湍流的观测数据（u*小于0.2m/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。因仪器漂移等原因引起的可疑数据用红色字体标识，其中在8月16日-9月17日间由于超声风速仪测量值出现错误，该段时间数据无法使用。
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（℃），水汽密度H2O（g/m3），二氧化碳浓度CO2（mg/m3），摩擦速度Ustar（m/s），稳定度Z/L（无量纲），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，二氧化碳通量的质量标识QA_Fc。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。
", "ds_source": "站点位于内蒙古额济纳旗四道桥，下垫面是胡杨与柽柳。观测点的经纬度是101.1335E, 41.9903N，海拔874 m。涡动相关仪的架高22m，采样频率是10Hz，超声朝向是正北向，超声风速温度仪与CO2/H2O分析仪之间的距离是17cm。
", "ds_process_way": "涡动相关仪的原始观测数据为10Hz，发布的数据是采用Edire软件处理的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），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。对Edire软件输出的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原始数据中每30min内缺失率大于3%的数据；
（4）剔除夜间弱湍流的观测数据（u*小于0.2m/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。因仪器漂移等原因引起的可疑数据用红色字体标识，其中在8月16日-9月17日间由于超声风速仪测量值出现错误，该段时间数据无法使用。
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（℃），水汽密度H2O（g/m3），二氧化碳浓度CO2（mg/m3），摩擦速度Ustar（m/s），稳定度Z/L（无量纲），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，二氧化碳通量的质量标识QA_Fc。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；
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2013-07-12 00:00:00", "ds_acq_end_time": "2013-12-31 00:00:00", "ds_acq_place": "黑河流域, 混合林站, 下游天然绿洲试验区", "ds_acq_lon_east": 101.13611111111112, "ds_acq_lat_south": 41.99027777777778, "ds_acq_lon_west": 101.13611111111112, "ds_acq_lat_north": 41.99027777777778, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 1058164, "ds_files_count": 2, "ds_format": "word", "ds_space_res": "", "ds_time_res": "日", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "1131b16a-1692-4d4e-8b85-1f387f35a9ed.png", "ds_thumb_from": 0, "ds_ref_way": "", "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": [], "quality_level": 3, "publish_time": "2021-08-27 16:19:00", "last_updated": "2026-02-05 17:39:40", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.nieer.2020.1610", "i18n": { "en": { "title": "Heihe River eco hydrological remote sensing experiment: hydrometeorological observation network data set (mixed forest station vortex correlator-2013)", "ds_format": "", "ds_source": "The station is located in sidaoqiao, Ejina Banner, Inner Mongolia, with Populus euphratica and Tamarix on the underlying surface. The longitude and latitude of the observation point are 101.1335e, 41.9903n and 874 m above sea level. The frame height of eddy correlator is 22m, the sampling frequency is 10Hz, the ultrasonic direction is due north, and the distance between ultrasonic anemometer and CO2 / H2O analyzer is 17cm
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "The data set contains the eddy correlator observation data of the mixed forest station downstream of Heihe hydrometeorological observation network from July 12, 2013 to December 31, 2013. The station is located in sidaoqiao, Ejina Banner, Inner Mongolia, with Populus euphratica and Tamarix on the underlying surface. The longitude and latitude of the observation point are 101.1335e, 41.9903n and 874 m above sea level. The frame height of eddy correlator is 22m, the sampling frequency is 10Hz, the ultrasonic direction is due north, and the distance between ultrasonic anemometer and CO2 / H2O analyzer is 17cm
\nThe original observation data of eddy correlator is 10Hz, and the released data is the 30 minute data processed by edire software. The main processing steps include: field value elimination, delay time correction, coordinate rotation (quadratic coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction. At the same time, the quality of each flux value is evaluated, mainly the atmospheric stability（ Δ St) and turbulence similarity characteristics (ITC). The 30 min flux value output by edire software is also screened:
\n（ 1) Eliminate the data in case of instrument error
\n（ 2) Eliminate the data 1H before and after precipitation
\n（ 3) Eliminate the data with deletion rate greater than 3% every 30min in the 10Hz original data
\n（ 4) Eliminate the observation data of weak turbulence at night (U * less than 0.2m / s). The average period of observation data is 30 minutes, 48 data a day, and the missing data is marked as - 6999. The suspicious data caused by instrument drift and other reasons are marked in red font. During August 16 to September 17, the data cannot be used due to the error of the measured value of ultrasonic anemometer
\nThe published observation data include: date / time, wind direction WDIR (°), horizontal wind speed wnd (M / s), standard deviation of lateral wind speed STD_ Uy (M / s), ultrasonic virtual temperature TV (℃), water vapor density H2O (g / m3), carbon dioxide concentration CO2 (mg / m3), friction velocity ustar (M / s), stability Z / L (dimensionless), sensible heat flux HS (w / m2), latent heat flux Le (w / m2), carbon dioxide flux FC (mg / (M2S)), quality identification QA of sensible heat flux_ HS, quality identification of latent heat flux QA_ Le, quality identification QA of carbon dioxide flux_ Fc。 The quality identification of sensible heat, latent heat and carbon dioxide flux is divided into three levels (quality identification 0:（ Δ st <30, ITC<30）; 1: （ Δ st <100, ITC<100）; The rest are 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
", "ds_time_res": "日", "ds_acq_place": "Heihe River Basin, mixed forest station, downstream natural oasis test area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The original observation data of eddy correlator is 10Hz, and the released data is the 30 minute data processed by edire software. The main processing steps include: field value elimination, delay time correction, coordinate rotation (quadratic coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction. At the same time, the quality of each flux value is evaluated, mainly the atmospheric stability（ Δ St) and turbulence similarity characteristics (ITC). The 30 min flux value output by edire software is also screened:
\n（ 1) Eliminate the data in case of instrument error
\n（ 2) Eliminate the data 1H before and after precipitation
\n（ 3) Eliminate the data with deletion rate greater than 3% every 30min in the 10Hz original data
\n（ 4) Eliminate the observation data of weak turbulence at night (U * less than 0.2m / s)
\nThe average period of observation data is 30 minutes, 48 data a day, and the missing data is marked as - 6999. The suspicious data caused by instrument drift and other reasons are marked in red font. During August 16 to September 17, the data cannot be used due to the error of the measured value of ultrasonic anemometer
\nThe published observation data include: date / time, wind direction WDIR (°), horizontal wind speed wnd (M / s), standard deviation of lateral wind speed STD_ Uy (M / s), ultrasonic virtual temperature TV (℃), water vapor density H2O (g / m3), carbon dioxide concentration CO2 (mg / m3), friction velocity ustar (M / s), stability Z / L (dimensionless), sensible heat flux HS (w / m2), latent heat flux Le (w / m2), carbon dioxide flux FC (mg / (M2S)), quality identification QA of sensible heat flux_ HS, quality identification of latent heat flux QA_ Le, quality identification QA of carbon dioxide flux_ Fc。 The quality identification of sensible heat, latent heat and carbon dioxide flux is divided into three levels (quality identification 0:（ Δ st < 30, ITC< 30）; 1: （ Δ st < 100, ITC< 100）; The rest are 2). The meaning of data time, for example, 0:30 represents the average of 0:00-0:30
", "ds_ref_instruction": "This 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": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "ds_topic_tags": [ "胡杨林", "二氧化碳通量", "水文气象观测网", "潜热通量", "感热通量", "涡动相关仪", "柽柳" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "下游天然绿洲试验区", "黑河流域", "混合林站" ], "ds_time_tags": [ 2013 ], "ds_contributors": [ { "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": "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": "任志国", "email": "rzgehu@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": "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": "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": "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" }