GB/T 35226-2017 in English

2.1 Temperature Observation Content

During manual observation, the temperature, maximum temperature and minimum temperature must be recorded regularly. Automatic observation stations record the temperature every hour and store 24 hours of continuous data.

2.2 Humidity observation content

Humidity observation includes the use of dry-bulb thermometer, hair hygrometer or Hygrometer measures and calculates water vapor pressure and dew point temperature.

3.1 Commonly used observation instruments

• Dry-bulb thermometer
• Wet-bulb thermometer
• Hair hygrometer
• Hygrometer
• Ventilation psychrometer

3.2 Automatic observation technology

The automatic weather station uses platinum resistance temperature sensor and humidity-sensitive capacitor humidity sensor for continuous measurement, and the data is transmitted and stored in real time.

4.1 Background of Standard Formulation

This standard is based on the observation guidelines of the World Meteorological Organization (WMO) and is formulated in combination with the actual needs of China's meteorological observations, aiming to improve the quality and consistency of observation data.

4.2 Analysis of Technological Evolution

With the advancement of technology, from traditional dry-bulb and wet-bulb thermometers to modern automatic sensors, meteorological observation technology has been continuously innovated, improving the efficiency and accuracy of data collection.

5.1 Implementation suggestions for manual observation

• Ensure that the instrument is calibrated regularly to reduce errors.
• Take additional protective measures in extreme weather conditions (such as strong winds and low temperatures).
• When recording observation data, pay attention to the accuracy of time stamps.

5.2 Precautions for automatic observation

• Regularly check the cleanliness and sensitivity of the sensor.
• Ensure the stability of the data transmission system.
• Backup power supply to prevent power outages from affecting observations.