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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.4, 2008³â, pp.413-422
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°æ±â¸¸ À¯¿ªÀÇ ±âÁØ Áõ¹ß»ê·® »êÁ¤À» À§ÇÑ Hargreaves °ø½ÄÀÇ º¸Á¤ ¹× °ËÁ¤
( Calibration and Validation of the Hargreaves Equation for the Reference Evapotranspiration Estimation in Gyeonggi Bay Watershed ) |
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±â»óÀÚ·á°¡ ºÎÁ·Çϰųª °áÃø Áö¿ªÀÇ ±âÁØ Áõ¹ß»ê·® »êÁ¤À» À§ÇÏ¿© Penman-Monteith (PM) °ø½ÄÀ» ÀÌ¿ëÇÑ Hargreaves °ø½ÄÀÇ ¸Å°³º¯¼ö ÃßÁ¤À» ¼öÇàÇÒ Çʿ䰡 ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â °æ±â¸¸ À¯¿ª¿¡ À§Ä¡ÇÑ °È, ÀÎõ, ¼ö¿ø, ¼»ê, õ¾ÈÀÇ 1997³â$sim$2004³â ±â»óÀڷḦ ¹ÙÅÁÀ¸·Î PM °ø½ÄÀ» ÀÌ¿ëÇÏ¿© °è»êÇÑ ±âÁØ Áõ¹ß»ê·®(ÀÌÇÏ ETo)À» ÀÌ¿ëÇÏ¿© Hargreaves °ø½ÄÀÇ ¸Å°³º¯¼ö¸¦ ÃßÁ¤ÇÏ¿´À¸¸ç, ÃßÁ¤µÈ ¸Å°³º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© 2005³â$sim$2006³âÀÇ PM °ø½ÄÀ» ÀÌ¿ëÇÑ ETo °á°ú¿Í ºñ±³ÇÏ¿© °ËÁ¤À» ¼öÇàÇÏ¿´´Ù. ±× °á°ú, ¸Å°³º¯¼ö Á¶Á¤ Àü RMS ¿ÀÂ÷´Â $14.63{sim}23.30$ Á¤µµ·Î ÆÄ¾ÇµÇ¾úÀ¸¸ç, ¸ðÇüÀÇ °ËÁ¤¿¡¼µµ $14.43{sim}26.81$ Á¤µµ·Î À¯»çÇÑ ¹üÀ§¸¦ º¸À̰í ÀÖ´Ù. ÇÑÆí, Nash-Sutcliffe ÀÏÄ¡°è¼ö´Â $0.68{sim}0.77$À̸ç, °ËÁ¤°úÁ¤¿¡¼´Â $0.43{sim}0.85$·Î ´ëºÎºÐÀÇ Áö¿ªÀÌ ÃßÁ¤È¿À²ÀÌ ¾ÆÁÖ ¶³¾îÁö´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¹Ý¸é, Hargreaves °è¼ö¸¦ Á¶Á¤ÇÑ °æ¿ì, RMS ¿ÀÂ÷´Â $5.23{sim}11.75$ Á¤µµ·Î ÆÄ¾ÇµÇ¾úÀ¸¸ç, ¸ðÇüÀÇ °ËÁ¤¿¡¼µµ $6.48{sim}9.09$Á¤µµ·Î ¸Å°³º¯¼ö Á¶Á¤Àü¿¡ ºñÇÏ¿© Å©°Ô °¨¼ÒÇϰí ÀÖÀ½À» ¾Ë ¼ö ÀÖÀ¸¸ç, ÇÑÆí, NSC´Â $0.92{sim}0.98$À̸ç, °ËÁ¤°úÁ¤¿¡¼´Â $0.93{sim}0.97$·Î ´ëºÎºÐÀÇ Áö¿ª¿¡¼ ÃßÁ¤È¿À²ÀÌ Å©°Ô Çâ»óµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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It is essential to locally adjust the Hargreaves parameter for estimating reference evapotranspiration with short data as a substitute of Penman-Monteith equation. In this study, evaluation of daily-based reference evapotranspiration is computed with Hargreaves equation. in Gyeonggi bay area including Ganghwa, Incheon, Suwon, Seosan, and Cheonan station for the time period of 1997-2004. Hargreaves coefficient is adjusted to give the best fit with Penman-Monteith evapotranspiration, being regarded as a reference. Then, the preferred parameters are validated for the same stations for the time period of 2005-2006. The optimization-based correction in calibration for 1997-2004 shows improved performance of the Hargreaves equation, giving 0.68-0.77 to 0.92-0.98 in Nash-Sutcliffe coefficient of efficiency (NSC) and 14.63-23.30 to 5.23-11.75 in RMSE. The validation for 2005-2006 shows improved performance of the Hargreaves equation, giving 0.43-0.85 to 0.93-0.97 in NSC and 14.43-26.81 to 6.48-9.09 in RMSE. |
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Ű¿öµå |
±âÁØ Áõ¹ß»ê·®;Hargreaves °ø½Ä;Penman-Monteith °ø½Ä;°æ±â¸¸;Reference Evapotranspiration;Hargreaves Equation;Penman-Monteith Equation;Gyeonggi Bay; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.4, 2008³â, pp.413-422
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814264574493)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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