Global temperature over the past 1,000 years

Temperature anomaly from a 1951-1980 base

+1.5C

+1.0

+0.5

0

-0.5

-1.0

Base

period

-1.5

1000

1200

1400

1600

1800

2000

+1.5C

+1.0

+0.5

0

-0.5

-1.0

Base

period

-1.5

1000

1200

1400

1600

1800

2000

+1.5C

+1.0

+0.5

0

-0.5

-1.0

Base

period

-1.5

1000

1200

1400

1600

1800

2000

+1.5C

+1.0

+0.5

0

-0.5

-1.0

Base

period

-1.5

1000

1200

1400

1600

1800

2000

+1.5C

+1.0

+0.5

0

-0.5

-1.0

Base

period

-1.5

1000

1200

1400

1600

1800

2000

Guardian graphic. Source: 2° Institute analysis of Nasa data. Note: The data is a combination of annual historical constructions and monthly observations.