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¿µ¹®Ç¥Áظí The Distribution of Atmospheric Refractivity in Coastal Areas of Korea
Çѱ۳»¿ë¿ä¾à ITU-R P.452-16Àº Àå°Å¸® ÀüÆÄ°æ·Î¿¡¼­ °æ·Î¼Õ½ÇÀ» À§ÇÑ ÀüÆĸðµ¨À» Á¦°øÇÏ°í ÀÖÀ¸¸ç, ÀÌ ÀüÆĸ𵨿¡¼­´Â ÀüÆÄ°æ·Î»óÀÇ ´ë±â±¼ÀýÁö¼ö¸¦ ÀԷº¯¼ö·Î ÇÊ¿ä·Î ÇÏ°í ÀÖ´Ù. ±×·¯³ª ÇØ´ç ±Ç°í¼­¿¡¼­ ÁÖ¾îÁø ´ë±â±¼ÀýÁö¼ö´Â ¡®80³â´ë WMO µ¥ÀÌÅ͸¦ ÀÌ¿ëÇÏ¿© »êÃâÇÑ °ÍÀ¸·Î½á ÃÖ±ÙÀÇ ±âÈĺ¯È­¿¡ µû¸¥ ´ë±â±¼ÀýÁö¼ö º¯È­¸¦ ¹Ý¿µÇÏÁö ¸øÇÏ°í ÀÖ´Ù. µû¶ó¼­ º» Ç¥ÁØ¿¡¼­´Â ´ë±â±¼ÀýÁö¼ö¸¦ ÃÖ±ÙÀÇ ±â»ó ÀڷḦ ÀÌ¿ëÇÏ¿© °»½ÅÇÔÀ¸·Î½á ÃÖ±ÙÀÇ ±âÈÄ º¯È­¿¡ µû¸¥ ¿µÇâÀ» ¹Ý¿µÇÏ°íÀÚ ÇÑ´Ù. À̸¦ À§ÇØ ±¹³» ÇØ¾È Áö¿ª 27°³¼Ò¿¡¼­ Áö³­ 5³â°£ ¸Å½Ã°£ °üÃøÇÏ°í ÃøÁ¤Çß´ø ¿Âµµ, ½Àµµ, ±â¾Ð µîÀÇ ±â»óÀڷḦ ÀÌ¿ëÇÏ¿© ´ë±â ±¼ÀýÁö¼ö¸¦ »êÃâÇÏ¿´°í, À̵éÀÇ Áö¿ªº° ºÐÆ÷, ¿¬°£ º¯È­ µîÀ» µµÇ¥·Î ³ªÅ¸³»¾î Ç¥ÁØÀ¸·Î Á¤ÇÔÀ¸·Î½á ÀüÆÄ°£¼· ºÐ¼® µî¿¡ Àû¿ëÇÏ¿© ÀüÆĸ𵨠°á°úÀÇ ½Å·Úµµ¸¦ ³ôÀÌ´Â µ¥ ±â¿©ÇÏ°íÀÚ ÇÑ´Ù.
¿µ¹®³»¿ë¿ä¾à Recommendation ITU-R P.452-16 provides a propagation model for path loss on long-range propagation paths, which requires atmospheric refractivity on the propagation path as an input variable. However, atmospheric refractivity given in the recommendation is calculated using WMO data in the 1980s and does not reflect recent changes in atmospheric refractivity due to climate change. Therefore, the standard is to reflect the effects of recent climate change by updating atmospheric refractivity using the latest weather data. To this end, we calculated the atmospheric refractivity index using weather data such as temperature, humidity and air pressure, which were observed and measured every hour for the past five years at 27 locations in the country's coastal areas, and we intend to contribute to the reliability of radio wave model results by applying them to radio frequency interference analysis, etc. by charting their regional distribution and annual changes.
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