Science – Society – Technology
Time period (year BP) | Mean surface temperature (°C) | |
---|---|---|
Beginning | End | |
100 | 1 | 4.25 |
200 | 100 | 5 |
300 | 200 | 3 |
400 | 300 | 2 |
500 | 400 | 3.3 |
1000 | 500 | 3.5 |
2000 | 1000 | 6 |
3000 | 2000 | 3.5 |
4000 | 3000 | 4 |
6000 | 5000 | 6.8 |
7000 | 6000 | 7 |
8000 | 7000 | 8 |
9000 | 8000 | 6 |
10,000 | 9000 | 6.2 |
15,000 | 10,000 | − 3.5 |
20,000 | 15,000 | − 6.5 |
30,000 | 20,000 | − 4.7 |
40,000 | 30,000 | − 4.5 |
50,000 | 40,000 | − 0.5 |