Calibration correcting method for ultraviolet radiation meter

A technology of ultraviolet radiation and calibration method is applied in the field of calibration and calibration of ultraviolet radiation meters, which can solve the problems of lack of calibration methods and long time, and achieve the effect of reducing the cost of use.

Inactive Publication Date: 2015-01-21
广东省东莞市气象局
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Problems solved by technology

Due to the lack of independent calibration methods, sending the UV radiation meter back to t

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  • Calibration correcting method for ultraviolet radiation meter
  • Calibration correcting method for ultraviolet radiation meter
  • Calibration correcting method for ultraviolet radiation meter

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[0021] Participate figure 1 , 2 , 3; The two UVS-AB-T UV radiance meters installed in the National Basic Weather Station of Guangdong Province are all produced by Kipp & Zonen. The installation time of the two UV radiance meters is 2007. In December (called Table A), and May 2010 (called Table B), the official operation time was January 2008 and July 2010, respectively. And the TUV mode (Madroniich 1993) developed by the US Atmospheric Research Center (NCAR, http: / / ncar.ucar.edu) based on the meter scattering theory that uses tropospheric ultraviolet radiation and part of the visible light radiation radiation transmission mode (Madroniich 1993), proposed a simple and economical Methods: Use the radiation transmission mode to output the ultraviolet radiation data to compare the data of the ultraviolet radiation meter, analyze the data attenuation characteristics of the ultraviolet radiation meter, and further propose a correction method, and use the newly installed ultraviolet r...

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Abstract

The invention discloses a calibration correcting method for an ultraviolet radiation meter. The calibration correcting method comprises the steps that the real ultraviolet irradiance reaching the ground at a point is expressed as F(lambda), the ultraviolet irradiance output by a model is expressed as F[m] (lambda), and then the formula F(lambda)=F[m] (lambda) is obtained; the ultraviolet irradiance observed by an aged ultraviolet radiation meter is expressed as F[ab] (lambda), and then attenuation rate can be expressed as the formula D=1- , and the attenuation rate D is a function related to time, namely, D=F(t), wherein D is the monthly attenuation rate, t is the number of service months of the meter; 85 fine cloudless days are selected, and the ultraviolet irradiances of 106 time points are adopted; the time series of D is obtained according to the formula, the attenuation rate of all the months are averaged, so that the monthly average attenuation rate D[mean] is obtained, fitting is conducted on the monthly average attenuation rate D[mean] and t, the attenuation rate obtained after fitting changes exponentially along with time, the relevance (R<2>) reaches 0.96, and please see the fitting equation in the equation (4); the attenuation rate of the ultraviolet radiation meter gradually becomes larger within short time, namely D=0.00116t<2>, and then a calibration correcting formula F'(t)= is obtained. The calibration correcting method is simple and economical and reduces the use cost of the meter.

Description

technical field [0001] The invention relates to a climate observation instrument, in particular to a method for calibrating and correcting an ultraviolet radiation meter. Background technique [0002] Ultraviolet radiation refers to radiation with a wavelength of 100 to 400 nm. Generally, ultraviolet radiation is divided into UVA (315-400 nm), UVB (280-315 nm) and UVC (100-280 nm) according to different wavelengths (Kaufman et al. 2002). Among them, UVC is basically absorbed by high-level ozone and difficult to reach the ground. UVB has a very important impact on human health and affects the growth of crops. UVA can darken human skin and have an important impact on the growth of animals and plants. Ultraviolet radiation has obvious effects on human health. Ultraviolet radiation from sunlight reaching the earth's surface can help the body synthesize vitamins D and K, but it can also damage the skin and eyes and suppress the immune system (Penner et al. 1992). According to ...

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Application Information

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IPC IPC(8): G01W1/18
CPCG01W1/18
Inventor 夏冬陈玲谭浩波高斯
Owner 广东省东莞市气象局
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