黑河生态水文遥感试验：水文气象观测网数据集（农田站自动气象站-2013）

该数据集包含了2013年7月9日至2013年12月31日黑河水文气象观测网下游农田站气象要素观测系统数据。站点位于内蒙古额济纳旗达来呼布镇四道桥，下垫面是甜瓜农田。观测点的经纬度是101.1338E, 42.0048N，海拔875m。四分量辐射仪安装在6m处，朝向正南；两个红外温度计传感器安装在6m处，朝向正南，探头朝向是垂直向下；两个光合有效辐射仪安装在6m处，朝向正南，探头垂直向上和向下方向各一个；土壤温度探头埋设在地表0cm和地下2cm、4cm处，并距离气象塔2m的正南方；土壤热流板（3块）依次埋设在地下6cm处，并距离气象塔2m的正南方，其中土壤热流板G1埋设在植被下方，G2和G3埋设在棵间。
观测项目有：四分量辐射（DR、UR、DLR_Cor、ULR_Cor、Rn）(单位：瓦/平方米)、地表辐射温度（IRT_1、IRT_2）(单位：摄氏度)、土壤热通量（Gs_1、Gs_2、Gs_3）(单位：瓦/平方米)、土壤温度（Ts_0cm、Ts_2cm、Ts_4cm）(单位：摄氏度)、向上和向下光合有效辐射（PAR_up、PAR_down）(单位：微摩尔/平方米秒)。
观测数据的处理与质量控制：（1）确保每天144个数据（每10min），若出现数据的缺失，则由-6999标示；（2）剔除有重复记录的时刻；（3）删除了明显超出物理意义或超出仪器量程的数据；（4）数据中以红字标示的部分为有疑问的数据；（5）日期和时间的格式统一，并且日期、时间在同一列。如，时间为：2013-9-10 10:30；（6）命名规则为：AWS+站点名称。
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)。

This dataset contains meteorological variable observation data from the downstream farmland station of the Heihe River Hydrometeorological Observation Network, covering the period from July 9, 2013 to December 31, 2013. The station is located in Sidaoqiao, Dalaihubu Town, Ejina Banner, Inner Mongolia, with the underlying surface being melon farmland. The coordinates of the observation point are 101.1338°E, 42.0048°N, and the elevation is 875 m.

Four-component radiometers are installed at 6 m above the ground, facing due south; two infrared thermometer sensors are installed at 6 m above the ground, facing due south with their probes pointing vertically downward; two photosynthetically active radiation (PAR) sensors are installed at 6 m above the ground, facing due south, with one probe pointing vertically upward and the other vertically downward. Soil temperature probes are buried at 0 cm (surface) and 2 cm, 4 cm below the ground surface, 2 m south of the meteorological tower. Three soil heat flux plates are buried at 6 cm below the ground surface, 2 m south of the meteorological tower; specifically, soil heat flux plate G1 is buried under vegetation, while G2 and G3 are buried between crop rows.

Observation items include: four-component radiation (DR, UR, DLR_Cor, ULR_Cor, Rn) (unit: W·m⁻²); surface radiation temperature (IRT_1, IRT_2) (unit: ℃); soil heat flux (Gs_1, Gs_2, Gs_3) (unit: W·m⁻²); soil temperature (Ts_0cm, Ts_2cm, Ts_4cm) (unit: ℃); upward and downward photosynthetically active radiation (PAR_up, PAR_down) (unit: μmol·m⁻²·s⁻¹).

Data processing and quality control procedures for the observation data are as follows: (1) Ensure 144 data records per day (collected every 10 minutes); missing data are marked with -6999; (2) Remove duplicate records at the same time stamp; (3) Delete data that obviously exceed physical limits or instrument measurement ranges; (4) Data marked in red are considered questionable; (5) Unify the date and time format, with date and time recorded in the same column, e.g., 2013-9-10 10:30; (6) The naming convention is: AWS + station name.

For information on the hydrometeorological network and this station, please refer to Li et al. (2013); for data processing procedures, please refer to Liu et al. (2011).