1981-1990年黄土高塬沟壑区南小河沟流域气象观测数据集

本数据集为1981-1990年南小河沟流域杨家沟、董庄沟及十八亩台3个蒸发量观测点的逐日水面蒸发量。观测仪器型号为HY.AM3小型蒸发皿，口径20cm，观测精度0.1mm。每日8时观测一次，封冻期间每五日观测一次，蒸发皿的蒸发量用同规格雨量杯或专用台秤观测。

This dataset contains daily surface evaporation data collected from three evaporation monitoring stations (Yangjiagou, Dongzhuanggou and Shibamutai) in the Nanxiaogou Basin between 1981 and 1990. The observation instrument employed is the HY.AM3 mini evaporation pan, which has a caliber of 20 cm and an observation accuracy of 0.1 mm. Observations are carried out once daily at 8:00, and once every five days during the freeze-up period. The evaporation amount of the pan is measured using a rain gauge cup of the same specification or a dedicated platform scale.