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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.12, 2005³â, pp.995-1008
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ÇØ¼ö¸é¿Âµµ¿Í ¿ì¸®³ª¶ó °¿ì·®°úÀÇ »ó°ü¼º ºÐ¼®
( A Study of Relationships between the Sea Surface Temperatures and Rainfall in Korea ) |
| ¹®¿µÀÏ;±ÇÇöÇÑ;±èµ¿±Ç; ¼¿ï½Ã¸³´ëÇб³ Åä¸ñ°øÇаú;;¼¿ï½Ã¸³´ëÇб³ Åä¸ñ°øÇаú;
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| º» ¿¬±¸¿¡¼´Â ¿ì¸®³ª¶ó °¿ì·®°ú ±¤¹üÀ§ÇÑ ÇØ¼ö¸é ¿Âµµ(SST)¿ÍÀÇ °ø°£ÀûÀÎ »ó°ü¼º ºÐ¼®À» À§Çؼ Wavelet ºÐ¼®°ú µ¶¸³¼ººÐºÐ¼®À» °áÇÕÇÏ¿© °èÀý°¿ì·®ÀÇ Áֿ伺ºÐÀ» ÃßÃâÇÏ¿´´Ù. °èÀý°¿ì·®ÀÇ WaveletºÐ¼®°á°ú 2³â°ú 8³â »çÀÌÀÇ Áֱ⿡¼ °ÇÑ ½ºÆåÆ®·³À» ³ªÅ¸³»¾úÀ¸¸ç ¸ðµç °èÀý°¿ì·®¿¡ ´ëÇÏ¿© Àúºóµµ Ư¼ºÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. Wavelet¿¡¼ ÃßÃâµÈ Scale Average Wavelet Power(SAWP)¸¦ ´ë»óÀ¸·Î µ¶¸³¼ººÐºÐ¼®À» ½Ç½ÃÇÏ¿´À¸¸ç °èÀý¿¡ µû¶ó °æ³âº¯È¿Í 10³â ÀÌ»óÀÇ Áֱ⸦ °®´Â ¼ººÐÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú°í º½°ú ¿©¸§ÀÇ ÁÖ¼ººÐ¿¡¼ Áõ°¡°æÇâÀÇ ¼ººÐÀ» °üÃøÇÒ ¼ö ÀÖ¾ú´Ù. ÃßÃâµÈ °¿ì·®ÀÇ ÁÖ¼ººÐ°ú SST¿ÍÀÇ »ó°ü°ü°è¸¦ Æò°¡ÇÑ °á°ú º½°ú ¿©¸§ °¿ì·®¿¡¼ Àεµ¾ç°ú ÀϺΠÅÂÆò¾ç¿¡¼ °ÇÑ »ó°ü°ü°è¸¦ ³ªÅ¸³»¾ú´Ù ƯÈ÷, Àεµ¾çÀÇ Çʸ®ÇÉ ¿¬¾È°ú ÅÂÆò¾çÀÇ È£ÁÖ ¿¬¾È¿¡¼ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ »ó°è°ü°è¸¦ °®´Â SST±¸¿ªÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ 3°³¿ù ÀÌÀü SST¿Í °¿ì·®¿¡ ´ëÇØ¼µµ ÀÌµé ±¸¿ª¿¡¼ Å« »ó°ü¼ºÀ» ³ªÅ¸³»¾úÀ¸¸ç À̵é 3°³¿ù SST¸¦ ÀÌ¿ëÇÏ¿© °¿ì·®ÀÇ ¿¹Ãø °¡´É¼ºÀ» Á¦½ÃÇÏ¿´´Ù. |
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| In this study, the principal components of rainfall in Korea are extracted by a method which consists of the independent component analysis combined with the wavelet transform, to examine the spatial correlation between seasonal rainfalls and global sea surface temperatures (SSTs). The 2-8 year band retains a strong wavelet power spectrum and the low frequency characteristics are shown by the wavelet analysis. The independent component analysis is performed by using the Scale Average Wavelet Power(SAWP) that is estimated by wavelet analysis. Interannual-interdecadal variation is the dominant variation, and an increasing trend is observed in the spring and summer seasons. The relationships between principal components of rainfall in the spring/summer seasons and SSTs existed in Indian and Pacific Oceans. Particularly, the SST zones, which represent a statistically significant correlation are located in the Philippine offshore and Australia offshore. Also, the three month leading SSTs in the same region we strongly correlated with the rainfall. Hence, these results propose a promising possibility of seasonal rainfall prediction by SST predictors. |
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| Ű¿öµå |
| °¿ì·®;ÇØ¼ö¸é¿Âµµ;»ó°ü¼º ºÐ¼®;Wavelet ºÐ¼®;µ¶¸³¼ººÐºÐ¼®;rainfall;sea surface temperature;correlation analysis;wavelet analysis;independent component analysis; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.12, 2005³â, pp.995-1008
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200508824142367)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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