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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.2, 2009³â, pp.117-129
Áõ¹ß·® °ü·Ã ±âÈÄÀÎÀÚ¿Í ÆÒÁõ¹ß·®ÀÇ º¯È­ ºÐ¼®
( An Analysis of Changes in Pan Evaporation and Climate Values Related to Actual Evaporation )
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ÀüÁö±¸Àû ±â¿Â»ó½ÂÀ¸·Î ÀÎÇØ Áõ¹ß·®ÀÌ Áõ°¡ÇÒ °ÍÀ¸·Î ¿¹°ßµÇ¾úÀ¸³ª, ´Ù¾çÇÑ Áö¿ª¿¡¼­ °üÃøµÈ ÆÒÁõ¹ß·®Àº Áö³­ ¼ö½Ê ³â°£ ¶Ñ·ÇÇÑ °¨¼ÒÃß¼¼¸¦ ³ªÅ¸³»°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â 1960³âºÎÅÍ 2007³â±îÁö °üÃøµÈ ±¹³» 18°³ ±â»ó°üÃø¼ÒÀÇ ÆÒÁõ¹ß·®°ú, Áõ¹ß¿¡ °ü·ÃµÈ °­¼ö·®, ¿Âµµ, »ó´ë½Àµµ, dz¼Ó, ÀÏÁ¶½Ã°£, ÀÏÁ¶À²¿¡ ´ëÇÑ º¯È­¸¦ ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú ÆÒÁõ¹ß·®Àº ¶Ñ·ÇÇÑ °¨¼ÒÇö»óÀ» ³ªÅ¸³»¾úÀ¸¸ç, °­¼ö·®°ú ¿Âµµ´Â Áõ°¡Ãß¼¼¸¦, »ó´ë½Àµµ, dz¼Ó, ÀÏÁ¶½Ã°£, ÀÏÁ¶À²Àº °¨¼ÒÃß¼¼¸¦ ³ªÅ¸³»¾ú´Ù. ƯÈ÷, ÀÏÁ¶½Ã°£°ú ÀÏÁ¶À²ÀÇ °¨¼ÒÃß¼¼´Â ÆÒÁõ¹ß·®°ú Áö¿ªÀûÀ¸·Î »ó´çÈ÷ ÀÏÄ¡Çϰí ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. »êÁ¡µµ¸¦ ±×·Á »ó°ü°ü°è¸¦ È®ÀÎÇØº» °á°ú, ÀÏÁ¶½Ã°£°ú ÀÏÁ¶À²Àº ÆÒÁõ¹ß·®°ú ¾çÀÇ »ó°ü°ü°è¸¦ °­ÇÏ°Ô ³ªÅ¸³»°í ÀÖÀ¸¸ç, °­¼ö·®ÀÇ °æ¿ì´Â ÆÒÁõ¹ß·®°ú´Â À½ÀÇ »ó°ü°ü°è°¡ Á¸ÀçÇÏ¿´´Ù. °­¸ª°üÃø¼Ò »ç·Ê¿¬±¸¿¡¼­ Penman°ø½Ä¿¡ ÀÇÇØ ÃßÁ¤µÈ °³¹æµÈ ¼ö¸é¿¡¼­ÀÇ Áõ¹ß·®Àº ÆÒÁõ¹ß·®¿¡¼­ º¸ÀÎ °Í °°Àº ¶Ñ·ÇÇÑ ÇÏÇâÃß¼¼°¡ °ËÁõµÇÁö ¾Ê¾Æ, ±âÁ¸¿¡ ÆÒÁõ¹ß·® °üÃø°ªÀ¸·ÎºÎÅÍ Áõ¹ß·®À» ÃßÁ¤ÇÏ´Â °ÍÀº Àå±âÀûÀÎ Áõ¹ß·® º¯È­¸¦ °ËÅäÇϱâ À§Çؼ­´Â ºÎÀûÀýÇÔÀ» È®ÀÎÇÏ¿´´Ù. ¸¶Áö¸·À¸·Î ÆÒÁõ¹ß·®ÀÌ ½ÇÁ¦Áõ¹ß·®°ú ¼­·Î »óÈ£º¸¿ÏÀû °ü°è¸¦ °®±â ¶§¹®¿¡, ÆÒÁõ¹ß·®ÀÌ °¨¼ÒÇÏ´õ¶óµµ ½ÇÁ¦Áõ¹ß·®Àº Áõ°¡ÇÒ ¼ö ÀÖÀ½À» ¼³¸íÇÏ¿´´Ù.
Evaporation over the world is expected to increase owing to increase in temperature by global warming. However, pan evaporation around the world has decreased in the past few decades. This study, which has been conducted in 18 meteorological gauging stations in Korean peninsula, investigates the changes in pan evaporation and climate variables such as precipitation, temperature, relative humidity, wind speed, sunshine hours, and percentage of sunshine, which can affect evaporation processes; the changes in these variables have been recorded between 1960 and 2007. At most gauging stations, pan evaporation shows statistically significant downward trends. The relative humidity, wind speed, sunshine hours, and percentage of sunshine also show downward trends. On the other hand, precipitation and temperature show upward trends. The spatial distribution of the downward trend in sunshine hours and percentage of sunshine correspond to that of the downward trend in pan evaporation. Scatter plots imply that pan evaporation has a strong positive correlation with the sunshine hours and percentage of sunshine, while it has a negative correlation with precipitation. At the Gangneung gauging station, the open water evaporation estimated using the Penman equation does not show the significant downward trend shown by pan evaporation. This result implies that pan evaporation is not a good indicator of potential or open water evaporations during the investigation of their long-term variability. Finally, this study explains the complementary relationship between pan and actual evaporations. Decreases in the pan evaporation can act as an evidence for the ever-increasing actual evaporation.
 
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.2, 2009³â, pp.117-129
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200906939466392)
¾ð¾î : Çѱ¹¾î
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