# 솔라패널을 이용한 라디오존데 온도센서의 일사보정

• Received : 2019.05.08
• Accepted : 2019.07.02
• Published : 2019.09.30
• 33 5

#### Abstract

For the upper air observations, a temperature measurement using radiosonde is a common method, and the compensation of solar radiation effects in the radiosonde temperature sensor is an important factor. In this paper, we present various experiments and compensation methods of the radiosonde temperature sensor to overcome the errors caused by the movement of the radiosonde rotation, etc. The methods and procedures of this study are as follows. First, we used the solar simulator to analyze the temperature variation and solar effect of the temperature sensor in the radiosonde according to the insolation. We also analyzed the temperature variation and solar effect of the temperature sensor according to the incident angle between the solar simulator and radiosonde. Second, we measured and analyzed solar radiation absorbed by solar cells attached to radiosonde. Third, we present combined compensate solution of the first and the second experiment results, to overcome errors caused by insolation effects in the radiosonde temperature sensors. Fourth, we compared that the reference temperature in similar environment with the upper air conditions, to verify the new radiated compensation performance of the radiosonde temperature sensor. Finally, the radiosonde fabricated in this study was raised to the atmosphere, and the laser correction algorithm proposed through experiments was reviewed. As a result of the radiosonde SRS-10 produced in this study, the temperature deviation from Vaisala RS92 was $0.057^{\circ}C$ in nighttime observation, $0.17^{\circ}C$ in daytime observation, It is expected that the GRUAN under WMO will be able to obtain a high test rating of 5.0.

#### Acknowledgement

Supported by : 산업기술평가관리원(KEIT)

#### References

1. Fitzgibbon, J., and J. Facundo, 2003: Developing a technique for verifying radiosonde solar radiation correction algorithms. American Meteorological Society, 8.2 [Available online at http://ams.confex.com/ams/pdfpapers/54317.pdf].
2. GCOS, 2007: GCOS Reference Upper-Air Network (GRUAN): Justification, requirements, siting and instrumentation options. World Meteorological Organization GCOS-112 WMO/TD No. 1379, 42 pp.
3. GCOS, 2013: The GCOS Reference Upper-Air Network (GRUAN) GUIDE. World Meteorological Organization Wigos Tech. Rep. No. 2013-03, GCOS-171, 116 pp.
4. Luers, J. K., 1990: Estimating the temperature error of the radiosonde rod thermistor under different environments. J. Atmos. Oceanic Technol., 7, 882-895. https://doi.org/10.1175/1520-0426(1990)007<0882:ETTEOT>2.0.CO;2
5. Luers, J. K., 1997: Temperature error of the Vaisala RS90 radiosonde. J. Atmos. Oceanic Technol., 14, 1520-1532. https://doi.org/10.1175/1520-0426(1997)014<1520:TEOTVR>2.0.CO;2
6. Lee, S.-W., B. I. Choi, J. C. Kim, S.-B. Woo, S. Park, S. G. Yang, and Y.-G. Kim, 2016: Importance of air pressure in the compensation for the solar radiation effect on temperature sensors of radiosondes. Meteor. Appl., 23, 691-697, doi:10.1002/met.1592. https://doi.org/10.1002/met.1592
7. Lee, S.-W., E. U. Park, B. I. Choi, J. C. Kim, S.-B. Woo, S. C. Park, S. G. Yang, and Y.-G. Kim, 2018: Dual temperature sensors with different emissivities in radiosondes for the compensation of solar irradiation effects with varying air pressure. Meteor. Appl., 25, 49-55, doi:10.1002/met.1668. https://doi.org/10.1002/met.1668
8. MTIE, 2017: 2nd Report of Development of High Speed and High Precision Radiosonde. Ministry of Trade, Industry & Energy, pp. 58 (in Korean).
9. Nash, J., 2015: Measurement of upper-air pressure, temperature and humidity. World Meteorological Organization IOM Rep. No. 121, 87 pp.
10. Nash, J., T. Oakley, H. Vomel, and L. Wei, 2011: WMO intercomparison of high quality radiosonde systems. World Meteorological Organization WMO/TD No. 1580, IOM Rep. No. 107, 238 pp.
11. Philipona, R., A. Krauchi, and E. Brocard, 2012: Solar and thermal radiation profiles and radiative forcing measured through the atmosphere. Geophysical Research Letters, 39, L13806, doi:10.1029/2012GL052087.
12. Philipona, R.,A. Krauchi, G. Romanens, G. Levrat, P. Ruppert, E. Brocard, P. Jeannet, D. Ruffieux, and B. Calpini, 2013: Solar and thermal radiation errors on upper-air radiosonde temperature measurements. J. Atmos. Oceanic Technol., 30, 2382-2393, doi:10.1175/JTECH-D-13-00047.1. https://doi.org/10.1175/JTECH-D-13-00047.1
13. Ruffieux, D., and J. Joss, 2003: Influence of radiation on the temperature sensor mounted on the Swiss radiosonde. J. Atmos. Oceanic Tech., 20, 1576-1582. https://doi.org/10.1175/1520-0426(2003)020<1576:IOROTT>2.0.CO;2
14. Scmidlin, F. J., J. K. Luers, and P. D. Huffman, 1986: Preliminary Estimates of Radiosonde Thermistor Errors. NASA Tech. Rep. NASA-TP-2637, 19 pp.