Editing IPCC:AR6/WGI/Chapter-Atlas (section)

===== Atlas.7.2.1.2 Findings From Previous IPCC Assessments =====

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According to AR5 WGII Chapter 27 ( [[#Magrin--2014|Magrin et al., 2014]] ), during the last decades of the 20th century, observational studies identified significant trends in precipitation and temperature in South America ( ''high confidence'' ). Increasing trends in annual rainfall in South-Eastern South America contrast with decreasing trends in central southern Chile and some regions of Brazil. Warming has been detected throughout South America (near 0.7°C–1°C in the 40 years since the mid-1970s), except for a cooling off the Chilean coast of about –1°C over the same period.

The AR5 WGI ( [[#Flato--2013|Flato et al., 2013]] ) noted that climate simulations from CMIP3 and CMIP5 models were able to represent well the main climatological features, such as seasonal mean and annual cycle ( ''high confidence'' ), although some biases remained over the Andes, the Amazonian basin and for the South America Monsoon. On the other hand, climate models from CMIP5 showed better results when compared to CMIP3.

The SR1.5 ( [[#Hoegh-Guldberg--2018|Hoegh-Guldberg et al., 2018]] ) assessed that a further increase of 0.5°C or 1°C is likely to have detectable effects on mean temperature and precipitation in South America, particularly in tropical regions (NWS, NAS, SAM and NES), as well as in SES, given that changes in mean temperatures and precipitation have already been attributed in the last decades for global warming of less than 1°C.

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