兰州大学寒旱区科学观测网络CARN（连城站气象要素梯度观测系统-2020）

该数据集包含了2020年4月9日至2020年12月21日兰州大学寒旱区科学观测网络连城站气象要素梯度观测系统数据。站点位于甘肃永登连城吐鲁沟国家森林公园吐鲁坪，下垫面是森林。观测点的经纬度是102.737E，36.692N，海拔2903m。二维超声风速/风向传感器和空气温湿度传感器分别架设在4m、8m处，共2层，朝向正北；气压计安装在1.5m采集箱内；翻斗式雨量计安装在塔2m处；红外温度计安装在2m处，朝向正南，探头朝向垂直向下；土壤热通量板（自校正式）（2块）依次埋设在塔南侧植被下5cm和10cm处；土壤温/湿/电导率传感器和土壤水势传感器埋设在塔南侧植被下5cm和10cm处；光合有效辐射传感器、日照时数传感器以及四分量辐射仪安装在4m处，朝向正南。 观测项目有：风速（WS_2m、WS_4m、WS_8m）(单位：米/秒)、风向（WD_2m、WD_4m、WD_8m）(单位：度)、空气温湿度（Ta_4m、Ta_8m和RH_4m、RH_8m）(单位：摄氏度、百分比)、气压（PA）(单位：百帕)、降水量（P）(单位：毫米)、四分量辐射（SWIN、SWOUT、LWIN、LWOUT、Rn）(单位：瓦/平方米)、地表辐射温度（TC）(单位：摄氏度)、土壤热通量（SHF）(单位：瓦/平方米)、土壤水分（SWC）(单位：百分比)、土壤温度（Ts）(单位：摄氏度) 、土壤水势（SWP）（单位：千帕）、土壤电导率（EC）（单位：微西门子/厘米）、光合有效辐射（PPFD）(单位：微摩尔/平方米秒)、日照时数（Sun_time）（单位：小时）。观测数据的处理与质量控制：（1）确保每天48个数据（每30min）；（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：2020-06-10 10:30。

This dataset contains meteorological element gradient observation system data collected at Liancheng Station of Lanzhou University Cold and Arid Regions Science Observation Network from April 9, 2020 to December 21, 2020.
The station is located at Tulu Ping, Tulugou National Forest Park, Liancheng, Yongdeng, Gansu, with forest as the underlying surface. The coordinates of the observation point are 102.737°E, 36.692°N, and the elevation is 2903 m.
Two-dimensional ultrasonic wind speed/direction sensors and air temperature and humidity sensors were installed at heights of 4 m and 8 m respectively, with two layers in total, facing due north. The barometer was installed in an instrument cabinet at 1.5 m. The tipping bucket rain gauge was installed at 2 m of the tower. The infrared thermometer was installed at 2 m, facing due south with the probe vertically downward. Two self-calibrating soil heat flux plates were buried at 5 cm and 10 cm depths below the vegetation on the south side of the tower respectively. Soil temperature, moisture and electrical conductivity sensors and soil water potential sensors were buried at 5 cm and 10 cm depths below the vegetation on the south side of the tower. Photosynthetically active radiation sensors, sunshine duration sensors and four-component radiometers were installed at 4 m, facing due south.

Observation items include: wind speed (WS_2m, WS_4m, WS_8m) (unit: m/s), wind direction (WD_2m, WD_4m, WD_8m) (unit: degree), air temperature and humidity (Ta_4m, Ta_8m, RH_4m, RH_8m) (unit: °C, %), barometric pressure (PA) (unit: hPa), precipitation (P) (unit: mm), four-component radiation (SWIN, SWOUT, LWIN, LWOUT, Rn) (unit: W/m²), surface radiation temperature (TC) (unit: °C), soil heat flux (SHF) (unit: W/m²), soil moisture (SWC) (unit: %), soil temperature (Ts) (unit: °C), soil water potential (SWP) (unit: kPa), soil electrical conductivity (EC) (unit: μS/cm), photosynthetically active radiation (PPFD) (unit: μmol/(m²·s)), sunshine duration (Sun_time) (unit: h).

Data processing and quality control of the observation data are as follows: (1) Ensure 48 data records per day (one record every 30 minutes); (2) Remove duplicate records; (3) Delete data that obviously exceeds physical significance or instrument measurement ranges; (4) Data marked in red are questionable; (5) Unify the date and time formats, with date and time in the same column. For example, the time format is: 2020-06-10 10:30.

搜集汇总

背景与挑战

背景概述

该数据集是兰州大学寒旱区科学观测网络连城站2020年的气象要素梯度观测数据，站点位于甘肃永登高海拔森林环境，观测时间主要为2020年4月至12月。数据集包含多层风速、温湿度、降水、辐射及土壤参数等多要素观测，经过严格质量控制，时间分辨率为小时，适用于寒旱区气象和生态研究。