|
|
|
Çѱ¹¼öÀÚ¿øÇÐȸ / v.30, no.5, 1997³â, pp.441-447
|
°üÃø¿ÀÂ÷¹®Á¦¿¡ ´ëÇÑ ´ÙÂ÷¿ø °¿ì¸ðÇüÀÇ Àû¿ë
( Application of Multi-Dimensional Precipitation Models to the Sampling Error Problem ) |
| À¯Ã¶»ó; °í·Á´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æ°øÇаú;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| °¿ì°èÃø¸ÁÀ̳ª ÀΰøÀ§¼ºÀ» ÀÌ¿ëÇÏ¿© ¾î¶² Áö¿ªÀÇ °¿ì¸¦ °üÃøÇÒ °æ¿ì °¢ °üÃø¹æ¹ýÀÇ Æ¯¼º¿¡ µû¶ó °üÃø¿ÀÂ÷°¡ ¹ß»ýÇÏ°Ô µÈ´Ù. Áï, °¿ì°èÃø¸ÁÀ» ÀÌ¿ëÇÒ °æ¿ì °üÃøµÈ °¿ì´Â ½Ã°£ÀûÀ¸·Î ¿¬¼ÓÀÌÁö¸¸ °ø°£ÀûÀ¸·Î´Â ºÒ¿¬¼ÓÀÇ Æ¯¼ºÀ» °®°Ô µÇ°í ÀΰøÀ§¼ºÀ» ÀÌ¿ëÇÏ´Â °æ¿ì °¿ì´Â °ø°£ÀûÀ¸·Î´Â ¿¬¼ÓÀÌÁö¸¸ ½Ã°£ÀûÀ¸·Î ºÒ¿¬¼ÓÀΠƯ¼ºÀ» ³ªÅ¸³»°Ô µÈ´Ù. ÀÌ¿¡ µû¶ó °üÃø¿ÀÂ÷ÀÇ °è»êÀº °¿ìÀÇ ½Ã°£Àû-°ø°£Àû ÅërPƯ¼º°ú °üÃø¹æ¹ý¿¡ µû¶ó °¢°¢ ´Ù¸£°Ô Á¤·®ÈµÈ´Ù. ÇöÀç ÀÌ ¹®Á¦¿Í °ü·ÃÇÏ¿© North¿Í Nakamoto(1989)°¡ Á¦¾ÈÇÑ °üÃø¿ÀÂ÷ÀÇ ÃßÁ¤½ÄÀÌ °¡Àå ´ëÇ¥ÀûÀ̶ó°í ÇÒ ¼ö ÀÖÀ¸¸ç, ÀÌ ½Ä¿¡¼´Â °¿ìÀÇ Åë°èƯ¼º°ú °üÃø¹æ¹ý¿¡ µû¸¥ Ư¼ºÀÌ °í·ÁµÇ¾î ÀÖ´Ù. ÀÌ ½ÄÀº °¿ìÀÇ Æ¯¼ºÀÌ ¾î´À Á¤µµ ÆÄ¾ÇµÇ´Â °æ¿ì ÀûÀýÇÑ °¿ì°üÃø °èȹ ¼ö¸³À» °¡´ÉÇÒ ¼ö ÀÖ°Ô ÇØÁØ´Ù. º» ³í¹®¿¡¼´Â ¸ÕÀú °üÃø¹æ¹ý¿¡ µû¸¥ °üÃø¿ÀÂ÷ÀÇ °è»ê¿¡ ´ëÇØ »ìÆìº¸°í, ¸í Ã¥ÀÇ ´ÙÂ÷¿ø °¿ì¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ÀÌ ¹®Á¦¿¡ Àû¿ëÇØ º¸¾Ò´Ù. Àû¿ë °á°ú ÇöÀç±îÁöÀÇ °üÃø¿ÀÂ÷ °è»ê¿¡´Â °¿ìÀÇ 2Â÷¿ø Åë°è Ư¼º¸¸ÀÌ °í·ÁµÇ±â ¶§¹®¿¡ ¸ðÇüÀÇ ¸Å°³º¯¼öµéÀÌ ÀÌ Æ¯¼º¿¡ ¸ÂÃß¾î ÀûÀýÈ÷ ÃßÁ¤µÈ °æ¿ì, ¸ðÇü¿¡ µû¸¥ °üÃø¿ÀÂ÷ÀÇ Å©±â´Â Å©Áö ¾ÊÀº °ÍÀ¸·Î ¹àÇôÁ³´Ù. ¾ÕÀ¸·Î ÀÌ·¯ÇÑ ´ÜÁ¡Àº 2Â÷¿ø ÀÌ»óÀÇ Åë°èƯ¼ºÀ» °í·ÁÇÏ´Â °üÃø¿ÀÂ÷ÀÇ ÃßÁ¤½Ä, ±Ã±ØÀûÀ¸·Î´Â °¿ìÀÇ È®·ü¹ÐµµÇÔ¼ö¸¦ °í·ÁÇÒ ¼ö ÀÖ´Â °üÃø¿ÀÂ÷ÀÇ ÃßÁ¤½ÄÀÇ °³¹ßÀ» ÅëÇØ °³¼±µÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù. |
|
| Rainfall observation using rain gage network or satellites includes the sampling error depending on the observation methods or plans. For example, the sampling using rain gages is continuous in time but discontinuous in space, which is nothing but the source of the sampling error. The sampling using satellites is the reverse case that continuous in space and discontinuous in time. The sampling error may be quantified by use of the temporal-spatial characteristics of rainfall and the sampling design. One of recent works on this problem was done by North and Nakamoto (1989), who derived a formulation for estimating the sampling error based on the temporal-spatial rainfall spectrum and the design scheme. The formula enables us to design an optimal rain gage network or a satellite operation plan providing the statistical characteristics of rainfall. In this paper the formula is reviewed and applied for the sampling error problems using several multi-dimensional precipitation models. The results show the limitation of the formulation, which cannot distinguish the model difference in case the model parameters can reproduce similar second order statistics of rainfall. The limitation can be improved by developing a new way to consider the higher order statistics, and eventually the probability density function (PDF) of rainfall. |
| |
| Ű¿öµå |
|
| |
|
|
 |
|
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.30, no.5, 1997³â, pp.441-447
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920100400)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|