Accessibility navigation


Decreased monsoon precipitation in the Northern Hemisphere due to anthropogenic aerosols

Downloads

Downloads per month over past year

Polson, D., Bollasina, M. , Hegerl, G. C. and Wilcox, L. J. (2014) Decreased monsoon precipitation in the Northern Hemisphere due to anthropogenic aerosols. Geophysical Research Letters, 41 (16). pp. 6023-6029. ISSN 1944-8007

[img]
Preview
Text (Open Access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.

420Kb
[img]
Preview
Text - Accepted Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.

155Kb
[img]
Preview
Text - Supplemental Material
· Please see our End User Agreement before downloading.

651Kb

To link to this article DOI: 10.1002/2014GL060811

Abstract/Summary

The Northern Hemisphere monsoons are an integral component of Earth's hydrological cycle and affect the lives of billions of people. Observed precipitation in the monsoon regions underwent substantial changes during the second half of the 20th century, with drying from the 1950s to mid-1980s and increasing precipitation in recent decades. Modeling studies suggest anthropogenic aerosols has been a key factor driving changes in tropical and monsoon precipitation. Here we apply detection and attribution methods to determine whether observed changes are driven by human influences using fingerprints of individual forcings (i.e. greenhouse gas, anthropogenic aerosol and natural) derived from climate models. The results show that the observed changes can only be explained when including the influence of anthropogenic aerosols, even after accounting for internal climate variability. Anthropogenic aerosol, not greenhouse gas or natural forcing, has been the dominant influence on Northern Hemisphere monsoon precipitation over the second half of the 20th century.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical and Physical Sciences > NCAS
Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
ID Code:37376
Publisher:American Geophysical Union

Download Statistics for this item.

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation