近幾十年全球海洋熱含量加倍
Lawrence Livermore scientists, working with National Oceanic and Atmospheric Administration and university colleagues, have found that half of the global ocean heat content increase since 1865 has occurred over the past two decades."In recent decades the ocean has continued to warm substantially, and withtime the warming signal is reaching deeper into the ocean," said LLNL scientist Peter Gleckler, lead author of a paper published in the journal Nature Climate Change.
Changes in ocean heat storage are important because the ocean absorbs more than 90 percent of the Earth's excess heat increase that is associated with globalwarming. The observed ocean and atmosphere warming is a result of continuing greenhouse gas emissions. Quantifying how much heat is accumulating in the Earth system is critical to improving the understanding of climate change already under way and to better assess how much more to expect in decades and centuries to come. It is vital to improving projections of how much and howfast the Earth will warm and seas rise in the future.
Increases in upper ocean temperatures since the 1970s are well documented and associated with greenhouse gas emissions. By including measurements from a 19th century oceanographic expedition and recent changes in the deeper ocean, the study indicates that half of the accumulated heat during the industrial era has occurred in recent decades, with about a third residing in the deeper oceans.
The team analyzed a diverse set of ocean temperature observations and a large suite of climate models. Scientists have measured ocean temperatures in a variety of ways over time, from lowering pairs of minimum-maximum thermometers to different depths on lines dangled overboard during the H.M.S. Challenger 1872-1876 expedition, to highly accurate modern instruments used on a global array of robotic profiling floats(called Argo) that "phone home" the data using satellites, starting around 1999.
This study found that estimates of ocean warming over a range of times and depths agree well with results from the latest generation of climate models, building confidence that the climate models are providing useful information. "The year-round, global distribution of ocean temperature data collected by Argo hasbeen key in improving our estimates of ocean warming and assessing climate models," notes LLNL oceanographer Paul Durack.
1 atmospheric
adj.大氣的,空氣的;大氣層的;大氣所引起的
參考例句:
? Sea surface temperatures and atmosphericcirculation are strongly coupled.海洋表面溫度與大氣環(huán)流是密切相關(guān)的。
? Clouds return radiant energy to thesurface primarily via the atmospheric window.云主要通過大氣窗區(qū)向地表輻射能量。
2 emissions
排放物( emission的名詞復(fù)數(shù) ); 散發(fā)物(尤指氣體)
參考例句:
? Most scientists accept that climatechange is linked to carbon emissions. 大多數(shù)科學(xué)家都相信氣候變化與排放的含碳?xì)怏w有關(guān)。
? Dangerous emissions radiate fromplutonium. 危險(xiǎn)的輻射物從钚放散出來。
3 projections
預(yù)測( projection的名詞復(fù)數(shù) ); 投影; 投擲; 突起物
參考例句:
? Their sales projections are a totalthumbsuck. 他們的銷售量預(yù)測純屬估計(jì)。
? The council has revised its projectionsof funding requirements upwards. 地方議會調(diào)高了對資金需求的預(yù)測。
4 analyzed
v.分析( analyze的過去式和過去分詞 );分解;解釋;對…進(jìn)行心理分析
參考例句:
? The doctors analyzed the blood sample foranemia. 醫(yī)生們分析了貧血的血樣。來自《簡明英漢詞典》
? The young man did not analyze the processof his captivation and enrapturement, for love to him was a mystery and couldnot be analyzed. 這年輕人沒有分析自己蠱惑著迷的過程,因?yàn)閷λ麃碚f,愛是個(gè)不可分析的迷。來自《簡明英漢詞典》
5 suite
n.一套(家具);套房;隨從人員
參考例句:
? She has a suite of rooms in the hotel.她在那家旅館有一套房間。
? That is a nice suite of furniture.那套家具很不錯(cuò)。
6 dangled
懸吊著( dangle的過去式和過去分詞 ); 擺動不定; 用某事物誘惑…; 吊胃口
參考例句:
? Gold charms dangled from her bracelet. 她的手鐲上掛著許多金飾物。
? It's the biggest financial incentive everdangled before British footballers. 這是歷來對英國足球運(yùn)動員的最大經(jīng)濟(jì)誘惑。
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