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Çѱ¹¼öÀÚ¿øÇÐȸ / v.28, no.5, 1995³â, pp.219-233
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»óź¤ÅÍ ¸ðÇü¿¡ ÀÇÇÑ ¼¿ïÁö¿ªÀÇ °¿ì¿¹Ãø
( Rainfall Prediction of Seoul Area by the State-Vector Model ) |
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| °¿ìÀÇ Æò±Õ°ú ºÐ»êÀÌ ½Ã °ø°£ÀûÀ¸·Î º¯ÇÏ´Â ºñÁ¤»ó ´Ùº¯·® ¸ðÇüÀ» °¿ì¸ðÇüÀ¸·Î ¼±Á¤ÇÏ¿´´Ù. ±×¸®°í °¿ì¸ðÇüÀÇ »óÅ ¹× ¸Å°³º¯¼öÀÇ ÃßÁ¤À» À§ÇØ ºñÁ¤»ó ´ëº¯·® ¸ðÇüÀÇ ÀÜÂ÷Ç׿¡ Kalman Filter ¼øÈ¯ÃßÁ¤ ¾Ë°í¸®ÁòÀ» Àû¿ëÇÏ¿© °¿ì¿¹Ãø¸ðÇü ½Ã½ºÅÛÀ» ±¸¼ºÇÏ¿´´Ù. ±×ÈÄ ¹ÝÀÀ½Ã°£ÀÌ ÂªÀº µµ½ÃÁö¿ª¿¡ ¼³Ä¡µÈ T/M °¿ì°üÃø¼Ò¿¡ ÀԷµǴ ¸Å ½Ã°£(10ºÐ°£°Ý) °¿ìÀڷḦ »ç¿ëÇÏ¿© È£¿ì°³¼ö¹æ¹ý¿¡ ÀÇÇÑ ºñÁ¤»ó(Non-stationary) Æò±Õ°ú ºÐ»êÀÇ ÃßÁ¤ ±×¸®°í È£¿ì¼Óµµ ÃßÁ¤À» ÅëÇÑ Á¤±ÔÀÜÂ÷ °øºÐ»êÀ» ÃßÁ¤ÇÏ¿© ´Ù¼öÀÇ ÁöÁ¡µé ¹× ¼±Çà½Ã°£µéÀÇ ½Ç½Ã°£ ´Ùº¯·® ´Ü±â °¿ì¿¹Ãø (On-line, Real-time, Multivariate Short-term, Rainfall Prediction)À» ÇÏ¿´´Ù. °¿ì¿¹Ãø½Ã½ºÅÛ ¸ðÇü¿¡ ÀÇÇÑ °á°ú¿Í ºñÁ¤»ó º¯·® ¸ðÇü¿¡ ÀÇÇÑ °¿ì¸ðÀÇ °á°ú°¡ Àß ÀÏÄ¡ÇÏ¿´´Ù. ±×¸®°í ¿¹ÃøÁ¤µµ¸¦ ÃøÁ¤ÇÏ´Â ¹æ¹ýÀÎ Á¦°ö Æò±Õ Á¦°ö±Ù ¿ÀÂ÷(RMSE)¿Í ¸ðÇü È¿À²¼º °è¼ö(ME)¸¦ ºÐ¼®ÇÑ °á°ú, °¿ì ¿¹Ãø½Ã°£ Áï ¼±Çà½Ã°£ÀÌ °¥¼ö·Ï Á¦°ö Æò±Õ Á¦°ö±Ù ¿ÀÂ÷°¡ Ä¿Áö°í ¸ðÇü È¿À²¼º °è¼ö°¡ 1·ÎºÎÅÍ Á¡Â÷ ÀÛ¾ÆÁö´Â °ÍÀ¸·Î º¸¾Æ °¿ì¿¹Ãø Á¤µµ°¡ ¶³¾îÁö´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ È£¿ì°³¼ö¹æ¹ýÀ¸·Î ±¸ÇÑ Æò±ÕÀÌ È£¿ì±¸Á¶ÀÇ ¸¹Àº ºÎºÐÀ» Â÷ÁöÇϰí ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| A non-stationary multivariate model is selected in which the mean and variance of rainfall are not temporally or spatially constant. And the rainfall prediction system is constructed which uses the recursive estimation algorithm, Kalman filter, to estimate system states and parameters of rainfall model simulataneously. The on-line, real-time, multivariate short-term, rainfall prediction for multi-stations and lead-times is carried out through the estimation of non-stationary mean and variance by the storm counter method, the normalized residual covariance and rainfall speed. The results of rainfall prediction system model agree with those generated by non-stationary multivariate model. The longer the lead time is, the larger the root mean square error becomes and the further the model efficiency decreases form 1. Thus, the accuracy of the rainfall prediction decreases as the lead time gets longer. Also it shows that the mean obtained by storm counter method constitutes the most significant part of the rainfall structure. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.28, no.5, 1995³â, pp.219-233
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511920096289)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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