兰州大学寒旱区科学观测网络CARN（临泽站气象要素梯度观测系统-2019）

该数据集包含了2019年1月1日至2019年12月31日兰州大学兰州大学寒旱区科学观测网络临泽站气象要素梯度观测系统数据。站点位于甘肃张掖临泽新华镇古寨村，下垫面是农田。观测点的经纬度是100.062E，39.238N，海拔1402m。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1m采集箱内；翻斗式雨量计安装在塔4m处；红外温度计安装在4m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20cm和40cm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_4m、WS_8m）(单位：米/秒)、风向（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）；雨量筒程序错误，雨量数据无效；由于程序故障，空气湿度采集错误；（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：2019-06-10 10:30。

This dataset contains meteorological element gradient observation system data from the Linze Station of Lanzhou University’s Cold and Arid Regions Scientific Observation Network, spanning from January 1, 2019 to December 31, 2019. The station is located in Guzhai Village, Xinhua Town, Linze, Zhangye, Gansu Province, with farmland as the underlying surface. The coordinates of the observation site are 100.062°E, 39.238°N, and the elevation is 1402 m. Two-dimensional ultrasonic wind speed/direction sensors and air temperature and humidity sensors were installed at 4 m and 8 m height respectively, with two layers in total, facing due north. A barometer was installed inside the 1 m-height data acquisition cabinet. A tipping bucket rain gauge was installed at 4 m height on the tower. An infrared thermometer was installed at 4 m height, facing due south with the probe pointing vertically downward. Two self-calibrating soil heat flux plates were buried at 5 cm and 10 cm depth respectively under vegetation on the south side of the tower. Soil temperature, moisture and electrical conductivity sensors and soil water potential sensors were buried at 20 cm and 40 cm depth under vegetation on the south side of the tower. Photosynthetically active radiation sensors, sunshine duration sensors and four-component radiometers were installed at 4 m height, facing due south.

The observation items include: wind speed (WS_4m, WS_8m) (unit: m/s), wind direction (WD_4m, WD_8m) (unit: degree), air temperature and humidity (Ta_4m, Ta_8m and RH_4m, RH_8m) (unit: ℃, %), atmospheric pressure (PA) (unit: hPa), precipitation (P) (unit: mm), four-component radiation (SWIN, SWOUT, LWIN, LWOUT, Rn) (unit: W/m²), surface radiation temperature (TC) (unit: ℃), soil heat flux (SHF) (unit: W/m²), soil moisture (SWC) (unit: %), soil temperature (Ts) (unit: ℃), 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: hour).

Data processing and quality control of the observation data:
1. Ensure 48 data records per day (one record every 30 minutes); Rain gauge data was invalid due to program errors; Air humidity collection was erroneous due to program malfunctions.
2. Remove duplicate records.
3. Delete data that obviously exceeds physical limits or instrument measurement ranges.
4. Data marked in red are questionable data.
5. The date and time formats are unified, and date and time are recorded in the same column. For example, the time format is: 2019-06-10 10:30.

搜集汇总

背景与挑战

背景概述

该数据集包含2019年甘肃张掖临泽站的气象要素梯度观测数据，涵盖风速、温湿度、降水、辐射等多类气象要素，但部分数据（如雨量）无效。数据经过严格质量控制，适用于寒旱区气象研究。