Fig. 2: Specific atmospheric circulation field favoring extreme cold days in East Asia.
From: Intensification of extreme cold events in East Asia in response to global mean sea-level rise
The Eurasian winter circulation patterns in the sea-level experiments are divided into three clusters (SOM1, SOM2, SOM3) at a synoptic scale. a The winter (DJF) anomalies in geopotential height (shade, gpm) and wind (arrows) fields at 500 hPa in SOM1. b The changes in frequency of extreme cold days (shading, %) and surface air temperature (contours of −2 and −4 °C) under SOM1. c The variations in the frequency and max persistence (days) of SOM1 in the sea-level rise experiments relative to SL0m. The asterisk indicates a significant change (90% confidence level with t-test) in the mean value compared to SL0m. All results are based on the 200-year mean of each experiment.
