Taipei-A warmer-than-usual autumn is likely this year due to a strong Pacific high pressure system that has lingered above Taiwan longer than expected this summer, the Central Weather Bureau said Tuesday.
"The high pressure system should have pushed further north to Japan by now, but it remains around Taiwan," said Lu Kuo-chen (???), director of the bureau's Weather Forecast Center.
Lu suggested that a stronger-than-usual low pressure system in Japan has prevented the Pacific high pressure system from tilting north, but he said the exact reason why it has stayed around Taiwan remains unknown.
Whatever the reason, the high pressure system that has been affecting Taiwan will keep water temperatures in the northwest Pacific Ocean relatively high at around 29 degrees, he said, noting that warmer waters in the past have usually signaled warmer autumns.
Temperatures in September, therefore, are likely to rise above the 27-28 degrees typically seen across Taiwan during the month, according to the bureau.
Lu said one to two tropical storms might strike Taiwan from September to October, and he cautioned that warmer sea water could give the storms more energy, making them more dangerous.
The high pressure system has already had a clear impact on Taiwan, as seen through weather data this summer.
As of Tuesday, Taipei has experienced temperatures of at least 37 degrees on 19 days since July 1, 5.6 days above the average and the most since the weather station was built in 1897.
It is highly likely that this month could be the hottest August ever, the bureau said. The current record of an average temperature of 29.4 degrees was set in 1998.
Source: Focus Taiwan News Channel