The Tropical Pacific Ocean—Back in the Driver's Seat?
The Tropical Pacific Ocean—Back in the Driver's Seat?
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DOI：
10.1126/science.1248115
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发表时间：
2014-02
期刊：
影响因子：
56.9
通讯作者：
A. Clement;P. DiNezio
中科院分区：
文献类型：
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作者：
A. Clement;P. DiNezio
热带太平洋东部持续凉爽的气候或许可以解释当前全球变暖的“间歇期”。现在地球表面的平均温度比 19 世纪中叶要高，但变暖的速度并不稳定。 20世纪中叶，地表变暖暂停，同时大气中硫酸盐气溶胶浓度增加，人们普遍认为硫酸盐气溶胶可以使地球降温。 20世纪70年代，发达国家实施了强有力的污染控制，地表变暖再次出现。因此，温室气体变暖和气溶胶冷却之间的平衡可以解释上个世纪地表变暖的变化率。 2000 年以来全球变暖的暂停（全球变暖“间断”）引发了关于自然和人类活动驱动（人为）对全球地表温度平均趋势的影响的新问题。最近的研究指出了热带太平洋在推动这些变化中的重要性。
Persistent cool conditions in the eastern tropical Pacific may explain the current global warming “hiatus.” Average temperatures at Earth's surface are now higher than they were in the mid-19th century, but the rate of warming has not been steady. A pause in surface warming in the mid-20th century coincided with increases in the atmospheric concentrations of sulfate aerosols, which are generally understood to cool the planet. Surface warming resumed in the 1970s, when strong pollution controls were implemented in developed countries. Thus, a balance of warming by greenhouse gases and cooling by aerosols may explain the variable rates of surface warming in the past century. A pause in global warming since 2000—a global warming “hiatus”—has opened up new questions about natural and human activity-driven (anthropogenic) effects on global mean trends in surface temperature. Recent studies point to the importance of the tropical Pacific in driving these changes.