Extended Data Fig. 7: Comparison of deglacial climate changes simulated in TraCE full, ice sheet-only, and Freshwater forcing-only runs.
From: Great Plains storm intensity since the last glacial controlled by spring surface warming
(a) Evolution of the springtime LLJ in the Full simulation. Light blue line is the decadal mean LLJ index calculated from the model output. Dark blue line is 500-yr moving average values of the LLJ index. The dashed line indicates the timing of the ice sheet ‘saddle collapse’ at 13.9 ka in the TraCE-21ka experiments. (b) Changes (11-13ka minus LGM) in the springtime 200 hPa (shadings) and 850 hPa (contours) eddy geopotential height in the TraCE full simulation. (c) Changes in the springtime surface temperature (shadings), sea-level pressure (contours), and 850 hPa wind. (d-f) Same as (a-c) but for the ice sheet-only single forcing simulation. (g-i) Same as (a-c) but for the freshwater forcing-only single forcing simulation.
