DOI QR코드

DOI QR Code

기상청 동네예보의 영농활용도 증진을 위한 방안: III. 사면 일 최고기온 결정에 미치는 이류효과 보정

Improving usage of the Korea Meteorological Administration's Digital Forecasts in Agriculture: III. Correction for Advection Effect on Determination of Daily Maximum Temperature Over Sloped Surfaces

  • Kim, Soo-Ock (National Center for Agro-Meteorology, Seoul National University) ;
  • Yun, Jin I. (College of Life Sciences, Kyung Hee University)
  • 투고 : 2014.10.06
  • 심사 : 2014.10.27
  • 발행 : 2014.12.30

초록

기온감률에 의한 고도보정만으로 표현되지 않는 산악지대의 한낮 기온 분포를 추정하기 위해 사면 일사효과모형이 사용되어왔으나 많은 경우 과다추정 경향이 나타났다. 그 원인을 찾고 기존 방법을 개선하기 위한 방안을 모색하기 위해 야외실험을 수행하였다. 경남 하동군 악양집수역의 고밀도 관측망으로부터 2012~2013년의 맑은 날 1500 기온, 1100-1500 적산일사량, 그리고 평균풍속자료를 수집하여 분석한 결과 고도보정 기온추정오차는 풍속과 높은 상관이 확인되었다. 이 결과를 토대로 일사효과모형을 풍속가중치에 의해 보정하는 간단한 방법을 도출하였다. 이 새로운 방법에 의해 2012-2013 기간 중 맑은 날에 대하여 악양집수역 내 10개 검증관측지점의 1500 기온을 추정하여 실측치와 비교하였다. 또한 기존 고도보정 추정치 및 일사효과모형 추정치와도 비교하였다. 그 결과 고도보정에 의한 추정치의 오차특성인 편기성과, 일사효과모형의 과다추정 경향이 새로운 방법에 의해 크게 개선되는 것을 확인할 수 있었다.

The effect of solar irradiance has been used to estimate daily maximum temperature, which make it possible to reduce the error inherent to lapse-rate based elevation difference correction in mountainous terrain. Still, recent observations indicated that the effect of solar radiation would need correction for estimation of daily maximum temperature. It was attempted to examine what would cause the variability of solar irradiance effect in determination of daily maximum temperature under natural field conditions and to suggest improved methods for estimation of the temperature distribution over mountainous regions. Temperature at 1500 and the wind speed for 1100 to 1500 were obtained at 10 validation sites with various topographical features including slope and aspect within a mountainous $50km^2$ catchment for 2012-2013. Lapse-rate corrected temperature estimates on clear days were compared with these observations, which would represent the differential irradiance effect among sloped surfaces. Results indicated a negative correlation between the mean wind speed and the estimation error. A simple scheme was derived from relationship between wind speed and estimation error for daily temperature to correct the effect of solar radiation. This scheme was incorporated into an existing model to estimate daily maximum temperature based on the effect of solar radiation. At 10 validation sites on clear days, estimates of 1500 LST temperature with and without the correction scheme were compared. It was found that a substantial improvement was achieved when the correction scheme was applied in terms of bias correction as well as error size reduction at all sites.

키워드

참고문헌

  1. Chung, U., K. H. Lee, and J. I. Yun, 2007: Performance of northern exposure index in reducing estimation error for daily maximum temperature over a rugged terrain. Korean Journal of Agricultural and Forest Meteorology 9(3), 195-202. https://doi.org/10.5532/KJAFM.2007.9.3.195
  2. Chung, U., H. C. Seo, J. I. Yun, S. J. Jeon, K. H. Moon, H. H. Seo, and Y. S. Kwon, 2009: Extrapolation of daily maximum temperature in a mountainous terrain. Asia-Pacific Journal of Atmospheric Sciences 45, 473-482.
  3. Heo, Y., S. H. Kim, E. G. Park, B. G. Son, Y. W., Choi, Y. J. Lee, Y. H. Park, J. M. Suh, J. H. Cho, C. O. Hong, S. G. Lee, and J. S. Kang, 2013: The influence of abnormally high temperature on growth and yield of hot pepper (Capsicum annuum L.). Journal of Agriculture and Life Science 47(2), 9-15. (In Korean with English abstract) https://doi.org/10.14397/jals.2013.47.6.9
  4. Hwang, S. W., J. Y. Lee, S. C. Hong, Y. H. Park, S. G. Yun, and M. H. Park, 2003: High temperature stress of summer Chinese cabbage in alpine region. Korean Journal of Soil Science and Fertilizer 36(6), 417-422. (In Korean with English abstract)
  5. Kim, S. H., I. M. Choi, J. G. Cho, J. H. Han, J. H. Hwang, H. H. Seo, and H. K. Yun, 2011: Correlation analysis between fruit quality of 'Campbell Early' grapes and climatic factors. Korean Journal of Agricultural and Forest Meteorology 13(2), 93-100. (in Korean with English abstract) doi:10.5532/KJAFM.2011.13.2.093
  6. Kim, S. O., and J. I. Yun, 2013: Relationship between midday air temperature and solar irradiance over sloping surfaces under cloudless conditions. Korean Journal of Agricultural and Forest Meteorology 15(4), 291-297. (In Korean with English abstract) doi:10.5532/KJAFM.2013.15.4.291
  7. Kondratyev, K. Y., and M. P. Federova, 1977: Radiation regime of inclined slopes. WMO Technical Note No. 152pp.
  8. Regniere, J., 1996: generalized approach to landscapewide seasonal forecasting with temperature-driven simulation models. Environmental Entomology 25(5), 869-881. https://doi.org/10.1093/ee/25.5.869
  9. Sagong, D. H., H. J. Kweon, M. Y. Park, Y. Y. Song, S. H. Ryu, M. J. Kim, K. H. Choi, and T. M. Yoon, 2013: Impacts of urban high temperature events on physiology of apple trees: A case study of 'Fuji'/M.9 apple trees in Daegu, Korea. Korean Journal of Agricultural and Forest Meteorology 15(3), 130-144. (In Korean with English abstract) doi:10.5532/KJAFM.2013.15.3.130
  10. Seo, H. C., S. J. Jeon, and J. I. Yun, 2008: Azimuthal distribution of daily maximum temperature observed at sideslopes of a grass-covered inactive parasitic volcano ("Ohreum") in Jeju Island. Korean Journal of Agricultural and Forest Meteorology 10(1), 25-31. (In Korean with English abstract) https://doi.org/10.5532/KJAFM.2008.10.1.025
  11. Yun, J. I., 2004: Visualization of local climates based on geospatial climatology. Korean Journal of Agricultural and Forest Meteorology 6(4), 272-289. (In Korean with English abstract)
  12. 기상청, 2012: 한반도 기후변화 전망보고서. 기상청, 151pp.

피인용 문헌

  1. Improving the Usage of the Korea Meteorological Administration's Digital Forecasts in Agriculture: V. Field Validation of the Sky-condition based Lapse Rate Estimation Scheme vol.18, pp.3, 2016, https://doi.org/10.5532/KJAFM.2016.18.3.135
  2. Feasibility of the Lapse Rate Prediction at an Hourly Time Interval vol.18, pp.1, 2016, https://doi.org/10.5532/KJAFM.2016.18.1.55
  3. A Feasibility Study of a Field-specific Weather Service for Small-scale Farms in a Topographically Complex Watershed vol.17, pp.4, 2015, https://doi.org/10.5532/KJAFM.2015.17.4.317