黑河流域地表过程综合观测网（大满超级站大孔径闪烁仪-2024）

该数据集包含了黑河流域地表过程综合观测网中游大满站的大孔径闪烁仪通量观测数据。中游大满站分别架设了BLS900和RR-RSS460型号的大孔径闪烁仪，北塔为BLS900的接收端和RR-RSS460的发射端，南塔为BLS900的发射端和RR-RSS460的接收端。观测时间为2024年1月1日至2024年12月31日。站点位于甘肃省张掖市大满灌区内，下垫面是玉米、果园和大棚，以玉米为主。北塔的经纬度是100.3785E，38.8607N，南塔的经纬度是100.3685E，38.8468N，海拔高度约1556m。大孔径闪烁仪的有效高度24.1m，光径长度是1854m，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（BLS900：Cn2>7.25E-14，RR-RSS460：Cn2>7.84 E-14）；（2）剔除解调信号强度较弱的数据（BLS900：Average X Intensity<1000；RR-RSS460：Demod>-20mv）；（3）剔除降水时刻的数据。在迭代计算过程中，对于BLS900，选取Thiermann and Grassl（1992）的稳定度普适函数；对于RR-RSS460，选取Andreas（1988）的稳定度普适函数。
关于发布数据的几点说明：（1）中游LAS数据以BLS900为主，缺失时刻由RR-RSS460观测补充，两者都缺失则以-9999标记。（2）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：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*.xlsx格式存储。
黑河流域地表过程综合观测网或站点信息请参考Liu et al. (2018)和Liu et al. (2023)。

This dataset contains the flux observation data measured by Large Aperture Scintillometers (LAS) at the Daman Station in the middle reaches of the Heihe River Basin Surface Process Comprehensive Observation Network.
Two types of LAS, BLS900 and RR-RSS460, are installed at the Daman Station. The north tower acts as the receiving end of BLS900 and the transmitting end of RR-RSS460, while the south tower serves as the transmitting end of BLS900 and the receiving end of RR-RSS460. The observation period spans from January 1, 2024 to December 31, 2024. The station is located within the Daman Irrigation District, Zhangye City, Gansu Province, with underlying surfaces mainly covered by corn, followed by orchards and solar greenhouses. The coordinates of the north tower are 100.3785°E, 38.8607°N, and those of the south tower are 100.3685°E, 38.8468°N, with an altitude of approximately 1556 m. The effective height of the LAS is 24.1 m, the optical path length is 1854 m, and the sampling frequency is 1 minute.
The original observation data from the LAS has a 1-minute time resolution. The released data is processed and quality-controlled. The sensible heat flux is mainly calculated via an iterative method based on the Monin-Obukhov Similarity Theory, combined with observations from automatic weather stations. The main quality control procedures are as follows: (1) Remove data with saturated Cn2 (BLS900: Cn2 > 7.25E-14; RR-RSS460: Cn2 > 7.84E-14); (2) Remove data with weak demodulated signal strength (BLS900: Average X Intensity < 1000; RR-RSS460: Demod > -20 mV); (3) Remove data collected during precipitation events. During the iterative calculation, the universal stability function proposed by Thiermann and Grassl (1992) is adopted for BLS900, while the universal stability function from Andreas (1988) is used for RR-RSS460.
Notes on the released data: (1) The LAS data from the middle reaches of the Heihe River Basin mainly adopts BLS900 observations, with missing values supplemented by RR-RSS460 measurements. When both datasets are missing, the value -9999 is used as the marker. (2) Table headers: "Date/Time": Date/Time (format: yyyy/m/d h:mm), "Cn2": Air refraction index structural parameter (unit: m^(-2/3)), "H": Sensible heat flux (unit: W/m²). The meaning of the data timestamp: for example, 0:30 represents the average value of 0:00-0:30. The data is stored in *.xlsx format.
For information on the Heihe River Basin Surface Process Comprehensive Observation Network or the stations, please refer to Liu et al. (2018) and Liu et al. (2023).

搜集汇总

背景与挑战

背景概述

该数据集包含2024年黑河流域大满超级站的大孔径闪烁仪通量观测数据，使用BLS900和RR-RSS460型号设备，数据经过质量控制和处理，主要用于感热通量的研究。数据集覆盖全年，以1分钟为时间分辨率，存储为.xlsx格式。