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Part of this increase in hurricane power
八十年代至今
from the '80s to recent times,
颶風越來越強的一部分原因
is related to sea surface temperature.
與海洋表面溫度有關
The reason is that as the temperature goes up,
隨著溫度的上升
this thermal disequilibrium
海洋與大氣間的
between the ocean and atmosphere also goes up.
熱力不平衡也隨之加劇
It goes up at a rate that would increase the wind speed
按理說 溫差每增加一攝氏度
of hurricanes maybe 7% for every one degree C.
颶風的風速就會上升7%
But we've seen a lot more
但我們觀測到半攝氏度
than 7% for half a degree.
就造成了遠超7%的效果
So we're trying to understand that.
我們想要找到原因
But he's not just interested in what's happened in the past.
他不僅對過去發生了什么感興趣
He's trying to get a sense of what the future might be
他還想要知道如果海洋溫度繼續上升的話
if ocean temperatures continue to rise.
未來會是怎樣的情況
If we look at the distribution of hurricanes
若要畫一張當今氣候條件下
in the present climate,
颶風的強度分布圖
with weak storms over on this side
這邊代表弱風暴
and strong storms over on this side,
那邊代表強風暴
what we see is lots of weak events.
弱風暴占大多數
