GB/T 35231-2017 in English
VALIDSpecifications for surface meteorological observation―Radiation
- Issued on:-
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 35231-2017地面气象观测规范 辐射》由TC507（全国气象仪器与观测方法标准化技术委员会）归口，主管部门为中国气象局。
Introduction
In-depth interpretation of GB/T 35231—2017 "Standard Radiation for Ground-based Meteorological Observations"
| Standard dimensions | Technical requirements | Implementation points | Comparative analysis |
|---|---|---|---|
| Observation elements | Multi-dimensional measurement of global radiation, direct radiation, scattered radiation, etc. | Requires configuration of a variety of special instruments, such as global radiation meter and direct radiation meter | Compared with other meteorological standards, this standard adds net total radiation and longwave radiation indicators in radiation observation. |
| Instrument requirements | Comply with GB/T19565 and other performance standards, including technical parameters such as sensitivity and response time | Regular calibration and maintenance are required to ensure measurement accuracy | Compared with the old version of the standard, the instrument performance requirements are more stringent, especially the nonlinearity and temperature response indicators of the long-wave radiometer. |
| Observation method | Including irradiance, exposure and other measurements, and requires recording minute-level and hour-level data | Observations must be carried out strictly in accordance with time accuracy to ensure data continuity | In terms of data processing, the calculation method of the atmospheric turbidity index has been added. |
Implementation suggestions and practical application cases
1. Observation site selection: Ensure that there is no obstruction around the site and the field of view is wide. Especially when installing the direct radiation meter, it is necessary to avoid obstacles to ensure measurement accuracy.
2. Instrument maintenance: Check the instrument status at least twice a day, including cleaning the glass cover, calibrating the levelness of the sensing surface, etc. For the net total radiation meter, it is recommended to replace the film cover every month to ensure measurement accuracy.
3. Data processing: Use the trapezoidal interpolation method to interpolate data, especially when the instrument fails. At the same time, use the net total radiation calculation formula to supplement missing data.
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