publication . Article . 2016

Greenhouse Gas Induced Changes in the Seasonal Cycle of the Amazon Basin in Coupled Climate-Vegetation Regional Model

Flavio Justino; Frode Stordal; Edward K. Vizy; Kerry H. Cook; Marcos P. S. Pereira;
Open Access English
  • Published: 01 Jan 2016 Journal: Climate (issn: 2225-1154, Copyright policy)
  • Publisher: MDPI AG
Previous work suggests that changes in seasonality could lead to a 70% reduction in the extent of the Amazon rainforest. The primary cause of the dieback of the rainforest is a lengthening of the dry season due to a weakening of the large-scale tropical circulation. Here we examine these changes in the seasonal cycle. Under present day conditions the Amazon climate is characterized by a zonal separation of the dominance of the annual and semi-annual seasonal cycles. This behavior is strongly modified under greenhouse warming conditions, with the annual cycle becoming dominant throughout the Amazon basin, increasing differences between the dry and wet seasons. In...
free text keywords: Amazon rainforest, harmonic analysis, climate change, Science, Q
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