Pacific Trade Winds Accelerated by Deforested Maritime Continent
Abstract
The Maritime Continent (hereafter MC) has suffered from severe deforestation in the past few decades. From CESM model experiments with prescribed climatological sea surface temperature, we found that deforestation will increase local surface temperature and enhance local convection. Moreover, the central Pacific trade winds in northern hemisphere accelerated significantly, which leads to an enhanced Walker circulation. This result provides knowledge for the roles of MC's deforestation in the Pacific Walker Circulation. We further used the fully couple model to broaden our understanding of the air-land and air-sea interactions and feedbacks on the Pacific Walker Circulation. The La Nina-like sea surface temperature pattern is shown in the CESM simulations after deforested MC corresponding to a stronger Walker circulation over the equatorial Pacific. This study implies the land-atmosphere interactions in the equatorial western Pacific may be able to affect the air-sea interactions over the eastern Pacific.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMGC21D1332L
- Keywords:
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- 1622 Earth system modeling;
- GLOBAL CHANGE;
- 1631 Land/atmosphere interactions;
- GLOBAL CHANGE;
- 1632 Land cover change;
- GLOBAL CHANGE;
- 1655 Water cycles;
- GLOBAL CHANGE