How much has Earth warmed since 1850?
The latest anomaly in this record is 1.99 deg C. It shows substantial warming since the early industrial climate, although this local dataset starts in 1880 rather than 1850.
Key Facts
- Latest anomaly: 1.99 deg C
- Early industrial reference: commonly 1850-1900
- Trend: Earth has warmed strongly since the 19th century
Graph
Explanation
Climate warming since 1850 is usually measured against the 1850-1900 early industrial reference period. This page uses the NASA GISTEMP annual anomaly record available in the project, which begins in 1880. The exact number depends on the dataset and baseline, but the direction is not ambiguous: the modern climate is much warmer than the late 19th century. The warming comes mainly from greenhouse gases added by human activity.