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The 7 hottest summers in recorded history have all occurred in the last 7 years.
The 7 hottest summers in recorded history have all occurred in the last 7 years.
The last frame as individual images. 
I often get asked why I use 1951-1980 average instead of something more recent...
The answer is covered in the FAQs: data.giss.nasa.gov/gistemp/faq/
Also, the baseline period for comparison to 'average' does not affect the underlying data or trend.
The answer is covered in the FAQs: data.giss.nasa.gov/gistemp/faq/
Also, the baseline period for comparison to 'average' does not affect the underlying data or trend.
What if we compare the summer of 2021 to the averages of different baselines?
For example, parts of Europe were cool compared to recent summers but still warmer than what would be considered an average summer 40-70 years ago.
For example, parts of Europe were cool compared to recent summers but still warmer than what would be considered an average summer 40-70 years ago.
The last 142 summers in 16 seconds.
Summer here referring to the Northern Hemisphere summer (averaging the months of June, July and August)
Summer here referring to the Northern Hemisphere summer (averaging the months of June, July and August)
Global average temperatures for the months of June-August since 1880.
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