
一位气候专家表示,香港异常温暖的十月天气是由超强台风、厄尔尼诺现象和全球变暖共同驱动的,并警告称,高于常年的气温可能持续到冬季。
Hong Kong’s exceptionally warm October weather is being driven by a combination of a super typhoon, El Nino and global warming, a climate expert has said, warning that higher-than-usual temperatures are likely to persist through the winter.
这一警告发布之际,过去几周香港全市的秋季气温均超过摄氏30度(华氏86度)。
The warning came as autumn temperatures across the city topped 30 degrees Celsius (86 Fahrenheit) over the past few weeks.
香港中文大学地球与环境科学系教授戴沛权周三解释说,厄尔尼诺现象改变了台风路径,并削弱了通常在秋季吹抵香港的东北风。
Professor Amos Tai Pui-kuen, of the earth and environmental sciences department at the Chinese University of Hong Kong, explained on Wednesday that El Nino had altered typhoon paths and weakened the northeasterly winds that typically reach the city in autumn.
他说:“‘超强’厄尔尼诺意味着台风路径会更偏北……一旦台风袭击香港,由于海面温度高,会有更多热量和水汽蒸发,这也会导致台风更强。”
“A ‘super’ El Nino means that courses of typhoons would move more northerly … if and when typhoons do hit Hong Kong, because of the high sea level temperatures, there will be more heat and steam evaporating, which contributes to a stronger typhoon, too,” he said.
他补充说,厄尔尼诺现象改变了大气环流,削弱了秋季东北风并减少了热量散发,使香港更加炎热。
He added that El Nino had changed atmospheric circulation, weakening the autumn northeasterlies and reducing heat dissipation, leaving Hong Kong hotter.
戴沛权说,另一个因素是马尼拉附近的一个超强台风。他解释说,作为该台风外围环流的一部分,香港上空形成了一个反气旋,导致空气下沉、风力减弱,阳光变得“特别充足”。他还表示,全球变暖也抬高了基准温度。
Another factor was a super typhoon near Manila, Tai said. He explained that an anticyclone had formed over Hong Kong as part of the typhoon’s outer circulation, causing air to sink and winds to weaken, with sunshine becoming “particularly abundant”. He added that global warming had also raised baseline temperatures.
一个本地环保团体和一位资深气象学家在7月曾警告,随着当前的厄尔尼诺现象很可能发展成超强事件,香港应为更强的风暴和更温暖、潮湿的冬季做好准备。
A local green group and a leading meteorologist warned in July that Hong Kong should prepare for stronger storms and a warmer, wetter winter, as the current El Nino was likely to intensify into a super event.
戴沛权说,随着冬季临近气温会逐渐下降,但由于“超强”厄尔尼诺的滞后效应可能持续到春季,这个冬季可能比往年更暖和。
Tai said temperatures would gradually fall as winter approached, but the season was likely to be warmer than in previous years because of the lingering effects of the “super” El Nino, which could last until spring.
周一,正值重阳节长假最后一天,香港天气炎热,全市多处发生独立事件,共有五名登山者身体不适,其中部分人由政府飞行服务队直升机送往医院。
Five hikers fell ill in separate incidents across Hong Kong on Monday as hot weather gripped the city on the final day of the Chung Yeung Festival long weekend. Some were airlifted to hospital by the Government Flying Service.
当天天气炎热干燥,香港天文台总部录得最高气温32摄氏度,新界部分地区气温更高出数度。
Conditions were hot and dry that day, with the maximum temperature reaching 32 degrees Celsius at the Hong Kong Observatory’s urban headquarters and several degrees higher in parts of the New Territories.
天文台预测,周五气温将升至33摄氏度,随后在下周逐渐回落至30摄氏度以下。
The Observatory forecast temperatures would reach 33 degrees on Friday before gradually falling below 30 degrees later the following week.