Land use changes and northern hemisphere cooling
Article first published online: 7 DEC 2012
Copyright 2001 by the American Geophysical Union.
Geophysical Research Letters
Volume 28, Issue 2, pages 291–294, 15 January 2001
How to Cite
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 5 OCT 2000
- Manuscript Received: 3 MAY 2000
Recent reconstructions of Northern Hemisphere mean temperatures over the past millennium show a long-term cooling of about 0.25K between 1000 and 1900 AD, prior to the 20th century's warming. In this paper, we present the results of equilibrium climate model simulations that indicate that the land-use change occurring over this period may largely explain this observed cooling, although other factors also could have played a significant role. The simulated annual mean cooling due to land-use change is 0.25K globally and 0.37 K for the Northern Hemisphere, suggesting that the cooling of the prior centuries could have been largely the result of anthropogenic interference in the climate system.