The chart shows the temperature anomaly, i.e. how much the temperature differs from the temperatures observed in the reference period. I can't say anything abou

The chart shows the temperature anomaly, i.e. how much the temperature differs from the temperatures observed in the reference period. I can't say anything about the website that generated the chart, but ECMWF is legit and when I look at the ECMWF models, I can see similar anomalies for South America right now, so the chart is correct. The claim about the 39°C in the Andes doesn't seem right however. They are having large anomalies, but since the temperatures should be below or near zero there, a +10°C anomaly only causes sweatshirt weather and not summer heat.