Fig. 2: Upward trend in the occurrence of summer NAO extremes at 500 hPa across different Earth system models. | Communications Earth & Environment

Fig. 2: Upward trend in the occurrence of summer NAO extremes at 500 hPa across different Earth system models.

From: More extreme summertime North Atlantic Oscillation under climate change

Fig. 2: Upward trend in the occurrence of summer NAO extremes at 500 hPa across different Earth system models.The alternative text for this image may have been generated using AI.

a Evolution of the occurrence of positive NAO extremes per decade. Shadings represent a 5–95% confidence interval based on bootstrapping. b Same as (a), but for negative extremes. c The rate of increase in the occurrence of positive summer NAO extremes per decade during 1950–2100, shown as a solid line for each model. Filled bars represent the 5–95% confidence interval by student's t-test. Unfilled bars represent the 5–95% confidence interval by student's t-test of resampled historical and RCP8.5 runs of Max Planck Institute Grand Ensemble (MPI_GE). d Same as (c) but for the negative summer NAO extremes. Numbers in the brackets of the legend indicate ensemble size.

Back to article page