Á¦¸ñ  Why has this happened now ÀÛ¼ºÀÏ  2019-12-18
ÀÛ¼ºÀÚ  Perth22
Why has this happened now?
Australia heated up »þ³Ú¿©¼ºÀÇ·ù=»þ³Ú¿©¼ºÀÇ·ù
this week as a mass of hot air swept east across the continent, with meteorologists forecasting "severe to À̹ÌÅ×À̼Çsa±Þ À̹ÌÅ×À̼ǼîÇÎ ·¹Çø®Ä«¼îÇθô=À̹ÌÅ×À̼Çsa±Þ À̹ÌÅ×À̼ǼîÇÎ ·¹Çø®Ä«¼îÇθô
extreme heatwave conditions".

Several individual ¿ë¹®µ¿¿ë´ÞÀÌ»ç
heat records for towns and cities have already been shattered. On Tuesday, places across the nation's centre recorded temperatures ¿©ÀÚ·¹Çø®Ä«»çÀÌÆ®=¿©ÀÚ·¹Çø®Ä«»çÀÌÆ®
above 45C.

At the start of the week, Perth, the Àá½ÇÀÌ»ñÁü¼¾ÅÍ
capital of Western Australia, recorded three days in a row above 40C - a record for December.

The dominant climate driver ¿À»êÆ÷ÀåÀÌ»ç
behind the heat has been a positive Indian Ocean Dipole (IOD) - an event where sea surface temperatures kgitbank=¾ÆÀÌÆ¼¹ðÅ©Á¾·ÎÁ¡
are warmer in the western half of the ocean, cooler in the east.

The difference between the two temperatures ´ä·Ê¶±=´ä·Êǰ ´ä·Ê¶± Çà»ç¶± ±îÄ¡¶±
is currently the strongest in 60 years. The warmer waters cause higher-than-average rains in the western Indian Ocean region, leading to flooding, and drier conditions across South East Asia and Australia.