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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.3, 2011³â, pp.209-220
Àϰ­¿ì ³»»ðÀ» ÀÌ¿ëÇÑ ÀÏÀ¯·® ½Ã¹Ä·¹ÀÌ¼Ç ¹× ¾Ó»óºí À¯·® ¹ß»ý
( Ensemble Daily Streamflow Forecast Using Two-step Daily Precipitation Interpolation )
Ȳ¿¬»ó;ÇãÁØÇà;Á¤¿µÈÆ; ¾ÆÄ­¼Ò ÁÖ¸³´ëÇб³;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;
 
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ÀÔ·ÂÀÚ·áÀÇ ºÒÈ®½Ç¼ºÀº °­¿ì-À¯Ãâ ¸ðÀÇ¿¡¼­ Áß¿äÇÑ ºÒÈ®½Ç¼º ¿ä¼Ò ÁßÀÇ ÇϳªÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ¸ÕÀú ¼¼ °¡ÁöÀÇ ¼­·Î ´Ù¸¥ ³»»ð ±â¹ýÀ» ÅëÇØ °è»êµÈ °­¼ö ÀÔ·Â ÀÚ·á (°üÃø°ªÀ» °¢ ¼ÒÀ¯¿ªÀÇ Áß½ÉÁ¡À¸·Î ³»»ðÇÏ¿© ÃßÁ¤ÇÑ ÀÔ·ÂÀÚ·áÀÓ)µéÀÌ °­¿ì-À¯Ãâ ¸ðÇü¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐÆ÷Çü ¼ö¹®¸ðÇü (PRMS)À» ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´À¸¸ç, ³»»ð¿ÀÂ÷¸¦ ¹ÙÅÁÀ¸·Î ¹ß»ýÇÑ ÀÔ·ÂÀڷḦ ¾Ó»óºí À¯·® ¿¹Ãø¿¡ ÀÌ¿ëÇÏ´Â °úÁ¤À» ¼ö¹®ÇÐÀûÀ¸·Î ¼­·Î ´Ù¸¥ µÎ°³ ÇÏõ À¯¿ª¿¡ Àû¿ëÇÏ¿´´Ù. ¶ÇÇÑ Monte Carlo±â¹ýÀ» ÀÌ¿ëÇÏ¿© ¼ö¹® ¸ðÇüÀÇ ¸Å°³º¯¼ö°¡ ¼­·Î ´Ù¸¥ ÀÔ·ÂÀÚ·áÀÇ Æ¯¼º¿¡ µû¶ó º¯È­ÇÏ´Â ¾ç»óÀ» ±¸ºÐÇÏ¿© º¸¾Ò´Ù. º» ¿¬±¸¿¡¼­ Á¦½ÃµÈ ¾Ó»óºí À¯·® ¿¹Ãø¹æ¹ýÀº ±â»ó ¿¹Ãø ¹× ±â»ó ¸ðÇüÀÇ °á°ú¹° µîÀÇ ÀÔ·ÂÀڷḦ ÀÌ¿ëÇÔÀ¸·Î½á Áß/Àå±â À¯·® ¿¹Ãø¿¡ Ȱ¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Input uncertainty is one of the major sources of uncertainty in hydrologic modeling. In this paper, first, three alternate rainfall inputs generated by different interpolation schemes were used to see the impact on a distributed watershed model. Later, the residuals of precipitation interpolations were tested as a source of ensemble streamflow generation in two river basins in the U.S. Using the Monte Carlo parameter search, the relationship between input and parameter uncertainty was also categorized to see sensitivity of the parameters to input differences. This analysis is useful not only to find the parameters that need more attention but also to transfer parameters calibrated for station measurement to the simulation using different inputs such as downscaled data from weather generator outputs. Input ensembles that preserves local statistical characteristics are used to generate streamflow ensembles hindcast, and showed that the ensemble sets are capturing the observed steamflow properly. This procedure is especially important to consider input uncertainties in the simulation of streamflow forecast.
 
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2´Ü°è Àϰ­¿ì ³»»ð¹ý;¿¹Ãø;¾Ó»óºí;ºÐÆ÷Çü ¸ðÇü;two-step precipitation interpolation;PRMS;forecast;ensemble;distributed model;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.3, 2011³â, pp.209-220
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201115952331160)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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