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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.6, 2009³â, pp.493-503
·¹ÀÌ´õ °­¿ìÀÇ ÆíÀÇ º¸Á¤À» À§ÇÑ Áö¿ªÀûÀ¸·Î ÆíÁßµÈ ¿ì·®°è¸ÁÀÇ Æò°¡: °­È­ °­¿ì·¹ÀÌ´õÀÇ »ç·Ê ¿¬±¸
( Evaluation of Spatially Disproportionate Rain Gauge Network for the Correction of Mean-Field Bias of Radar Rainfall: A Case Study of Ganghwa Rain Radar )
À¯Ã¶»ó;À±Á¤¼ö;±èº´¼ö;ÇÏÀºÈ£; °í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;°í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;µµÈ­Á¾ÇÕ±â¼ú°ø»ç ¼öÀÚ¿ø 1ºÎ;¿¬¼¼´ëÇб³ Á¤º¸Åë°èÇаú;
 
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·¹ÀÌ´õ °­¿ìÀÇ ÆíÀÇ ÃßÁ¤Àº ±Ùº»ÀûÀ¸·Î ·¹ÀÌ´õ °­¿ìÀÇ Æò±Õ°ú Âü°ªÀ¸·Î °¡Á¤µÇ´Â ¿ì·®°è °­¿ìÀÇ Æò±Õ°úÀÇ Â÷À̸¦ °áÁ¤ÇÏ´Â ¹®Á¦ÀÌ´Ù. µÎ °üÃøÄ¡ÀÇ Â÷À̸¦ Á¤È®È÷ °áÁ¤Çϱâ À§Çؼ­´Â µÎ °üÃøÄ¡ÀÇ Â÷ÀÌ¿¡ ´ëÇÑ ºÐ»êÀÌ ¸Å¿ì ÀÛ¾Æ¾ß Çϸç, µû¶ó¼­ ºñ±³µÇ´Â °üÃøÄ¡ÀÇ ¼ö°¡ ÃæºÐÈ÷ È®º¸µÇ¾î¾ß ÇÑ´Ù. Áï, ÀÌ ¹®Á¦´Â µÎ °üÃøÄ¡ÀÇ Â÷ÀÌ¿¡ ´ëÇÑ ºÐ»êÀÇ ±Ô¸ð¸¦ ÁÖ¾îÁø Á¶°Ç¿¡ ¸ÂÃß±â À§ÇØ ÇÊ¿äÇÑ ¿ì·®°èÀÇ ¼ö¸¦ °áÁ¤ÇÏ´Â °ÍÀÌ µÈ´Ù. º» ¿¬±¸¿¡´Â ƯÈ÷ ÀϺΠÁö¿ª¿¡¸¸ ¿ì·®°èÀÇ ¼³Ä¡°¡ °¡´ÉÇÑ °æ¿ì¸¦ ´ë»óÀ¸·Î ÇϰíÀÚ ÇÑ´Ù. ÀÌ´Â ÀÓÁø°­ À¯¿ª¿¡ ´ëÇØ °­¿ì·¹ÀÌ´õ¸¦ ¿î¿µÇÏ´Â °æ¿ì¿¡ ÇØ´çÇÏ´Â ¹®Á¦À̸ç, ¶ÇÇÑ ¹Ù´Ù¿Í Á¢ÇÑ Áö¿ª¿¡¼­ ·¹ÀÌ´õ¸¦ ¼³Ä¡ ¿î¿µÇÒ °æ¿ì¿¡µµ ¹ß»ýÇÏ´Â ¹®Á¦ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ÀÓÁø°­ À¯¿ªÀ» ´ë»óÀ¸·Î ÇÏ¿´À¸¸ç, Àüü À¯¿ªÀÇ ¾à 1/3Á¤µµÀÎ ÇÏ·ùÀ¯¿ª¿¡¼­¸¸ ¿ì·®°è ÀÚ·á°¡ °¡¿ëÇÑ °æ¿ì¿Í Àüü À¯¿ª¿¡ ´ëÇØ ¿ì·®°è °­¿ì°¡ °¡¿ëÇÑ °æ¿ìÀÇ Â÷À̸¦ ºñ±³ÇÏ¿´´Ù. ÀÌ·¯ÇÑ ºÐ¼®°á°ú¸¦ Åä´ë·Î ÀÓÁø°­ À¯¿ª Àüü Áö¿ª¿¡ °í¸£°Ô ¿ì·®°è°¡ ºÐÆ÷ÇÒ °æ¿ìÀÇ °üÃøÁ¤µµ¸¦ ¾ò±â À§ÇÑ ÇÏ·ùÀ¯¿ªÀÇ ¿ì·®°è ¹Ðµµ¸¦ Á¦½ÃÇÏ¿´´Ù.
Estimation of the mean-field bias of radar rainfall is to determine the difference between the areal means of radar and rain gauge rainfall, where the rain gauge rainfall is assumed to be the truth. To exactly determine this bias, the variance of the difference between two observations must be small enough, thus, enough number of observations is indispensible. So, the problem becomes to determine the number of rain gauges to satisfy the level of variance of the difference between two observations. Especially, this study focuses on the case when the rain gauges are disproportionate spatially. This is the problem for the Ganghwa rain radar for the observation of rainfall within the Imjin river basin and the same problem also occurs when a radar is located in between land and ocean. This study considered the Imjin river basin, and compared two cases when rain gauges are available only within the downstream part, about one third of the whole basin, and over the whole basin. Based on the results derived, the rain gauge density within the downstream part of the Imjin river basin was proposed to secure the same accuracy obtained when the rain gauges are available over the whole Imjin river basin.
 
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·¹ÀÌ´õ °­¿ì;ÆíÀÇÃßÁ¤;¿ì·®°è ¹Ðµµ;ÀÓÁø°­ À¯¿ª;Radar rainfall;bias estimation;rain gauge density;Imjin river basin;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.6, 2009³â, pp.493-503
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200918839962061)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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