科学英语：全球变暖变化速度缓慢

A new study based on 1,000 years of temperature records suggests global warming is not progressing as fast as it would under the most severe emissions1 scenarios3 outlined by the Intergovernmental Panel on Climate Change (IPCC). "Based on our
analysis, a middle-of-the-road warming scenario2 is more likely, at least for now," said Patrick T. Brown, a doctoral student in climatology at Duke University's Nicholas School of the Environment. "But this could change."
The Duke-led study shows that natural variability in surface temperatures -- caused by interactions between the ocean and atmosphere, and other natural factors -- can account for observed changes in the recent rates of warming from decade to decade.
The researchers say these "climate wiggles" can slow or speed the rate of warming from decade to decade, and accentuate4 or offset5 the effects of increases in greenhouse gas concentrations. If not properly explained and accounted for, they may skew the reliability6 of climate models and lead to over-interpretation of short-term temperature trends.
The research, published today in the peer-reviewed journal Scientific Reports, uses empirical data, rather than the more commonly used climate models, to estimate decade-to-decade variability.
"At any given time, we could start warming at a faster rate if greenhouse gas concentrations in the atmosphere increase without any offsetting7 changes in aerosol8 concentrations or natural variability," said Wenhong Li, assistant professor of climate at Duke, who conducted the study with Brown.
The team examined whether climate models, such as those used by the IPCC, accurately9 account for natural chaotic10 variability that can occur in the rate of global warming as a result of interactions between the ocean and atmosphere, and other natural factors.
词汇解析：
1 emissions
排放物( emission的名词复数 )；散发物（尤指气体）
参考例句：
Most scientists accept that climate change is linked to carbon emissions. 大多数科学
家都相信气候变化与排放的含碳气体有关。

Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。

2 scenario
n.剧本，脚本；概要
参考例句：
But the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。

This is a totally different scenario.这是完全不同的剧本。

3 scenarios
n.[意]情节；剧本；事态；脚本
参考例句：
Further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者，根据一些事故解说，石墨堆芯可比非石墨堆芯更安全一些。

来自英
汉非文学 - 环境法 - 环境法
Again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样，我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。

来自About Face 3交互设计精髓
4 accentuate
v.着重，强调
参考例句：
She has beautiful eyes, so we should accentuate them in the makeup.她眼睛很美丽，我们在化妆时应该突出她的眼睛。

Mrs Obamas speeches rarely accentuate the positive.奥巴马夫人的演讲很少强调美国积极的一面。

5 offset
n.分支，补偿；v.抵消，补偿
参考例句：
Their wage increases would be offset by higher prices.他们增加的工资会被物价上涨所抵消。

He put up his prices to offset the increased cost of materials.他提高了售价以补偿材
料成本的增加。

6 reliability
n.可靠性，确实性
参考例句：
We mustn't presume too much upon the reliability of such sources.我们不应过分指望这类消息来源的可靠性。

I can assure you of the reliability of the information.我向你保证这消息可靠。

7 offsetting
n.偏置法v.抵消( offset的现在分词 )；补偿；（为了比较的目的而）把…并列（或并置）；为（管道等）装支管
参考例句：
Dealers, having concluded a forward contract, should always hedge with an offsetting contract. 外汇经营商在签订了一项远期合同之后总是应进行套头交易签订一项相抵合同。

来自辞典例句
Where does Germany think offsetting shifts into greater external deficits might occur? 在德国看来，这么大的外部赤字应该转移到哪里？来自互联网
8 aerosol
n.悬浮尘粒，气溶胶，烟雾剂，喷雾器
参考例句：
They sprayed aerosol insect repellent into the faces of police.他们将喷雾驱虫剂喷在了警察的脸上。

Aerosol particles affect visibility,climate,and our health and quality of life.气溶胶对大气能见度、气候变化以及人类健康等有重要影响。

9 accurately
adv.准确地，精确地
参考例句：
It is hard to hit the ball accurately.准确地击中球很难。

Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。

10 chaotic
adj.混沌的，一片混乱的，一团糟的
参考例句：
Things have been getting chaotic in the office recently.最近办公室的情况越来越乱了。

The traffic in the city was chaotic.这城市的交通糟透了。

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