Global Air Temperature

全球气温

This graphic of the global air temperature was posted by Phil Jones on behalf of the Climatic Research Unit, UK. The key reference used was Brohan, et al.

这张全球气温图由Phil Jones代表英国气候研究单位发布。所参考的文献是Brohan等人的研究。

While the increase in air temperature (global warming) is obvious, the more difficult question is whether or not this increase is primarily driven by human activity in the form of the release of greenhouse gases. The position of the Inter-governmental Panel on Climate Change (IPCC) is that human activity is a major part of the cause, as indicated in the following statements from their 2007 report:

尽管气温上升（全球变暖）是显而易见的，但更困难的问题在于这种上升是否主要由人类活动引起，特别是通过温室气体的释放。联合国气候变化框架公约（IPCC）的立场是，人类活动是主要原因之一，如其2007年报告中下列陈述所示：

'Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level.'

'Most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations. This is an advance since the TAR's conclusion that "most of the observed warming over the last 50 years is likely to have been due to the increase in greenhouse gas concentrations". Discernible human influences now extend to other aspects of climate, including ocean warming, continental-average temperatures, temperature extremes and wind patterns'

气候系统的变暖是明确的，这从全球平均大气和海洋温度的上升、广泛融化的雪和冰以及全球平均海平面的上升等观测中已经可以明显看出。自20世纪中期以来，观测到的全球平均温度上升大部分很可能是由于人为温室气体浓度的增加。这比TAR的结论有所进步，即“过去50年中观测到的变暖很可能是由温室气体浓度的增加引起的”。现在，人类的影响已经扩展到气候的其他方面，包括海洋变暖、大陆平均温度、温度极端值和风模式。