We are close to a knowledge of annual summer and winter temperature variations over much of the northern hemisphere going back 600 years.
我们很快就会知道，600年前北半球大部分地区每年夏季和冬季的温度是如何变化的。
This is the lowest recorded temperature for any permanently inhabited location on Earth and the lowest temperature recorded in the Northern Hemisphere.
对于地球上任何一个永久居住点来说，这都是有记录以来的最低气温，也是北半球有记录以来的最低气温。
The results show a high correlation between the annual cycles of temperature and LAI in middle and high latitudes of the Northern Hemisphere.
植被LAI与温度的总体正相关的最大值出现在北半球的中高纬度地区；
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