| TUVR型紫外辐射表性能研究 |
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| 引用本文： | 谭浩波,邓雪娇,吴兑,蒋承霖,李菲.TUVR型紫外辐射表性能研究[J].应用气象学报,2008,19(3):367-371. |
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| 作者姓名： | 谭浩波 邓雪娇 吴兑 蒋承霖 李菲 |
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| 作者单位： | 中国气象局广州热带海洋气象研究所, 广州 510080 |
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| 摘 要： | 利用多台Eppley实验室的TUVR紫外辐射表, 设计并进行比对观测试验, 定量了解TUVR型辐射表测量误差来源及贡献, 了解该辐射表性能, 从而提出数据订正方法。试验结果表明:TUVR型辐射表测量误差来源于感应元件和散射片两部分; 感应元件的衰减率y与使用时间t (月) 呈线性关系。散射片的测量误差跟一个地区的污染状况有关。清洗后散射片透过率与原始水平的透过率仍能保持线性关系, 不影响其余弦订正能力。订正后的结果与标准测量值相关显著。
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| 关 键 词： | 紫外辐射 TUVR 测量误差 数据订正 |
| 收稿时间： | 2007-07-23 |
The Performance of TUVR Ultraviolet Radiometer |
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| Tan Haobo,Deng Xuejiao,Wu Dui,Jiang Chenglin,Li Fei.The Performance of TUVR Ultraviolet Radiometer[J].Quarterly Journal of Applied Meteorology,2008,19(3):367-371. |
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| Authors: | Tan Haobo Deng Xuejiao Wu Dui Jiang Chenglin Li Fei |
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| Affiliation: | Guangzhou Institute of Tropical and Marine Meteorology, Guangzhou 510080 |
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| Abstract: | An ultraviolet radiometer (TUVR) by the Eppley Lab of the United States is among the most popular instruments used for its reasonable design. Although not being able to detect the overall ultraviolet radiation, irradiance at the frequency section between 385 nm and 400 nm could be measured. After some time since the instrument is first put into use at the institution affiliated with the authors, the irradiance readings are found to attenuate a little. Under normal circumstances, it has to be sent back to the manufacturer for calibration, which is unpractical and costly. Under existing regulations in this regard, the instrument is probably discarded. When spectrometers are not an option as they are inconvenient for field operation, two new instruments are then introduced as reference to determine the cause of errors and ways of correcting data received. For this purpose, experiments are designed and conducted to analyze quantitatively the error source and contribution of measurement of surface UV radiation using the ultraviolet radiometer. The result shows that the degradation of sensors and pollution in the teflon diffusing disk are the main error sources. The decreasing rate (y) of sensors decreases linearly with its exposure time (t) and the fitting curve in Guangzhou is y=0.66t. The measuring error from the diffusing disk is mainly related to air pollution. Although the transmission of cleaned disk will be changed, it has linear relation with that of the original diffusing disk, and the adherence to Lambert cosine law is not affected. The value corrected by factors is very close to that of standard radiometer, and the correlation coefficient approaches 1.0. |
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| Keywords: | ultraviolet radiation TUVR measuring error data correction |
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