Next Article in Journal
Application of a Low Cost Ceramic Filter for Recycling Sand Filter Backwash Water
Next Article in Special Issue
Return Level Estimation of Extreme Rainfall over the Iberian Peninsula: Comparison of Methods
Previous Article in Journal
A First Estimation of County-Based Green Water Availability and Its Implications for Agriculture and Bioenergy Production in the United States
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Water 2018, 10(2), 149; https://doi.org/10.3390/w10020149

Land Use Change over the Amazon Forest and Its Impact on the Local Climate

1
São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Bairro: Vargem Limpa, Bauru, SP 17033-360, Brazil
2
Bauru Meteorological Centre (IPMet/UNESP), Bauru, SP 17033-360, Brazil
3
Federal University of Itajuba (UNIFEI), Av. BPS, 1303, Bairro: Pinheirinho, Itajubá, MG 37500-903, Brazil
4
Earth System Physics, Abdus Salam International Centre for Theoretical Physics, Trieste 34100, Italy
5
University of São Paulo (USP), Rua do Matão, 1226, Bairro: Butantã, São Paulo, SP 05508-090, Brazil
6
National Centre for Monitoring and Early Warning of Natural Disasters—CEMADEN, São José dos Campos, SP 12247-016, Brazil
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 19 January 2018 / Accepted: 22 January 2018 / Published: 3 February 2018
Full-Text   |   PDF [1998 KB, uploaded 3 February 2018]   |  

Simple Summary

Abstract

One of the most important anthropogenic influences on climate is land use change (LUC). In particular, the Amazon (AMZ) basin is a highly vulnerable area to climate change due to substantial modifications of the hydroclimatology of the region expected as a result of LUC. However, both the magnitude of these changes and the physical process underlying this scenario are still uncertain. This work aims to analyze the simulated Amazon deforestation and its impacts on local mean climate. We used the Common Land Model (CLM) version 4.5 coupled with the Regional Climate Model (RegCM4) over the Coordinated Regional Climate Downscaling Experiment (CORDEX) South America domain. We performed one simulation with the RegCM4 default land cover map (CTRL) and one simulation under a scenario of deforestation (LUC), i.e., replacing broadleaf evergreen trees with C3 grass over the Amazon basin. Both simulations were driven by ERA Interim reanalysis from 1979 to 2009. The climate change signal due to AMZ deforestation was evaluated by comparing the climatology of CTRL with LUC. Concerning the temperature, the deforested areas are about 2 °C warmer compared to the CTRL experiment, which contributes to decrease the surface pressure. Higher air temperature is associated with a decrease of the latent heat flux and an increase of the sensible heat flux over the deforested areas. AMZ deforestation induces a dipole pattern response in the precipitation over the region: a reduction over the west (about 7.9%) and an increase over the east (about 8.3%). Analyzing the water balance in the atmospheric column over the AMZ basin, the results show that under the deforestation scenario the land surface processes play an important role and drive the precipitation in the western AMZ; on the other hand, on the east side, the large scale circulation drives the precipitation change signal. Dipole patterns over scenarios of deforestation in the Amazon was also found by other authors, but the precipitation decrease on the west side was never fully explained. Using budget equations, this work highlights the physical processes that control the climate in the Amazon basin under a deforestation scenario. View Full-Text
Keywords: land use change; Amazon forest; energy balance; water balance; deforestation land use change; Amazon forest; energy balance; water balance; deforestation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Llopart, M.; Reboita, M.S.; Coppola, E.; Giorgi, F.; da Rocha, R.P.; de Souza, D.O. Land Use Change over the Amazon Forest and Its Impact on the Local Climate. Water 2018, 10, 149.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top