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1 A Variation of Summer Rainfall in Korea* Seungho Lee** and Won Tae Kwon*** Abstract : Daily rainfall data from 14 stations during 1941 to 2000 were analyzed in order to examine the characteristics of the variation of summer rainfall and the identify relationship between the variation of summer rainfall and the variation of SOI(Southern Oscillation Index) and NPI(North Pacific Index), global temperature. For further investigation, study period is divided into two 30 year intervals, and There are the trend of increase in August and decrease in September in the later period compared with the earlier one. It was Mid-west in August where there is the largest variation. It is related to the increase of the frequency of heavy rainfall. The second period of extreme rainfall by ten days is absent, or it change from early in September to late in August. According to the result, the dry spell in August disappears and Changma is continued to early in September. Gradually, there is change from negative (or positive) to positive (or negative) to the rainfall anomaly of the mid of August and the mid of September (or July). The correlation between the variation of rainfall and oceanic variation and global temperature is statistically significant. Key Words : variation of summer rainfall, SO and NP indices, global temperature KRF B00212 Associate Professor, Department of Geography, Konkuk University leesh@konkuk.ac.kr Climate Research Laboratory, METRI, KMA 819

2 ü í 820

3 a a 821

4 822

5 823

6 824

7 PPC 7 = 0.488NP a 825

8 a PPC 9 = SO NP GT a PPC 8 = SO NP GT 826

9 a PPC 7 = 0.290SO NP GT a PPC 8 = SO GT 827

10 a PPC 8 = SO NP GT a a PPC 9 = 0.203SO NP GT

11 829

12 830

13 Brunetti, M., Maugeri, Maurizio and Nanni, Teresa, 2002, Atmospheric circulation and precipitation in Italy for the last 50 years, Int. J. climatol., 22(12), Corte-Real, J., Qian, Budong and Xu, Hong, 1998, Regional climate change in Portugal: precipitation variability associated with largescale atmospheric circulation, Int. J. climatol., 18(6), Fowler, H. J. and Kilsby, C. G., 2002, Precipitation and the North Atlantic Oscillation: a study of climatic variability in northern England, Int. J. climatol., 22(7), Ho, C. H., Lee, J. Y., Ahan, M. Y., and Lee, H. S., 2003, A sudden change in summer rainfall characteristics in Korea during the late 1970s, Int. J. climatol., 23(1), Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X., Maskell, K., and Johnson, C. A., 2001, Climate Change 2001: The Scientific Basis, Intergovernmental Panel on Climate Change working group I, Cambridge University Press. Hurrell, J. W., 1995, Decadal trend in the North Atlantic oscillation: regional temperature and precipitation, Science, 269, Jung, H., Choi, S. Y., Oh, J. H., and Lim, G. H., 2002, Recent trends in temperature and precipitation over South Korea, Int. J. climatol., 22(11), Kang, I. S. and Jeong, Y. K., 1996, Association of Interannual variations of temperature and precipitation in Seoul with principal modes of Pacific SST, J. Kprean Met. Soc., 32, Kutiel, Maheras, H., P. and Guika, S., 1996, 831

14 Circulation and extreme rainfall conditions in the eastern Mediterranean during the last century, Int. J. climatol., 16(1), Malmgren, B. A., Hulugalla, R. Hayashi, Y. and Mikami, T., 2003, Precipitation trends in Sri Lanka since the 1870s and relationships to El Nino-southern oscillation, Int. J. climatol., 23(10), Martín, M. I., Luna, M. Y. Morata, A. and Valero, F., 2004, North Atlantic teleconnection patterns of low-frequency variability and their links with springtime precipitation in the western Mediterranean, Int. J. climatol., 24(2), Mayers, J., 1996, Spatial and temporal fluctuation of monthly rainfall in the British Isles and variations in the mid-latitude westerly circulation, Int. J. climatol., 16(5), Trenberth, K. E., and Hurrell, J. W., 1994, Decadal atmosphere-ocean variations in the Pacific, Climate Dynamics, 9, Türkes, M. and Erlat, E., 2003, Precipitation changes and variability in Turkey linked to the North Atlantic oscillation during the period , Int. J. climatol., 23(14), Correspondence : Seungho Lee, Dept. of Geography, Konkuk Univ., 1, Hwayang-dong, Gwangjin-gu, Seoul, , Korea, (leesh@konkuk.ac.kr, phone: , fax: ) 832

03이경미(237~248)ok

03이경미(237~248)ok The recent (2001-2010) changes on temperature and precipitation related to normals (1971-2000) in Korea* Kyoungmi Lee** Hee-Jeong Baek*** ChunHo Cho**** Won-Tae Kwon*****. 61 (1971~2000) 10 (2001~2010).