The el nino weather pattern has contributed to higher temperatures, but many scientists say elevated levels of man-made greenhouse gases are pushing temperatures higher.

厄尔尼诺现象助长了这个更高的温度，但很多科学家认为人造温室气体的排放的升级把全球温度推向更高。

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Global temperatures have been rising since the turn of the twentieth century, most notably during the past 30 years, but la Nina is part of a regular cycle that is simply overlaid onto that pattern.

进入20世纪以来，全球气温骤然升高，这在近30年尤其显著。拉尼娜现象不过是基于这种模式下，正常循环的一部分。

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Since the last week of November, Ireland and the UK have been locked in a pattern of record snowfalls and cold temperatures.

从11月的最后一个周起，爱尔兰和英国就被有历史记录以来最大规模的降雪和低温覆盖。

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That lack of association between temperature trends and CO2 has continued over the last century, as the up and down pattern of global temperatures over the past 100 years does not follow the upward climb of CO2 as the industrial revolution has expanded globally.

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Instead, the temperature record shows an up and down pattern that follows the pattern of natural influences on global temperatures, such as cyclical sunspots and solar flares, and cycles of ocean churning from warmer to colder temperatures and back, such as the Pacific Decadal Oscillation (PDO).

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