Global warming is epic, long-term study says

每日一看(2)---Global warming is epic, long-term study says

哈，這張照片是我私心放上來的，難得捕捉到弟弟上籃的光采。回歸正題，今天還是一樣，來看看昨天沒看完的部份，想想這些專家是怎麼看待全球暖化這個議題的吧。

Far from natural warming

根本不是自然增溫

Variations in how the Earth is tilted and its orbit around the sun make for a pattern of planetary warming phases followed by cooling phases across the millennia.

The team's research shows the Earth's overall temperature curve dipping down over about the past 4,000 years, but the downward plod comes to an abrupt halt in modern times.

"If you were to predict -- based on where we are relative to the position of the sun and how we are tilted -- you would predict that we would be still cooling, but we're not," Marcott said.

Instead, the planet is warming up. It hasn't been quite this warm in thousands of years. And it's getting hotter.

By 2100, the Earth will be warmer than ever before, Marcott said. If emissions continue as currently predicted until then, global temperatures will rise "well above anything we've ever seen in the last 11,000 years."

That could be a rise of 2 to 11.5 degrees Fahrenheit, according to the NSF.

幾千年來，地球的傾斜角度與繞日軌道造成本身的增溫變化，而每次皆有寒冷期伴隨。研究團隊指出，地球溫度在過去四千年來，平均溫度明顯下降；但這樣的走勢維持不久，時間進入現代，溫度曲線突然驟升。

Marcott說：「如果你要預測---根據地球與太陽的距離和本身的傾斜角度---你會認為地球現在仍然處於寒冷期，但其實不然。」

是的，地球正在暖化。數千年來，這種快速升溫的情況還是頭一遭。

Marcott表示，在2100年前，地球溫度會創下史上新高。如果各種暖化因素一直持續不變，到時全球溫度將會升到「過去一萬一千年來從未見過的高」。

美國國家科學基金會指出，上句話表示溫度會升高華氏2到11.5度。