Figure 5.

Analysis of Seasonal Air Pressure Changes at Mt. Everest's Summit

(A) Observed distribution of hourly air pressure in the first and last decades of the reconstruction.

(B) Observed trends in annual statistics. The solid red line indicates the median Theil-Sen slope estimate, and the dotted red lines show the 5^th–95^th percentiles. Decadal trends (and uncertainty range) are annotated at the bottom of each panel.

(C) CMIP5 ensemble median sensitivities of monthly statistics to global mean temperature change (hPa °C⁻¹).

(D) CMIP5 projections for annual mean, maximum, and minimum summit pressures for $\Delta T_g$of warming above 1981–2010 global mean temperature Solid lines indicate the CMIP5 ensemble median, whereas shading spans the 5^th–95^th percentiles. Note that the colors share the same meaning as panel (C), and annotations summarize the gradients (hPa °C⁻¹) of the lines plotted (5^th–95^th percentiles). The green circle marks the mean summit pressure across all successful oxygenless ascents, with green lines extending to the minimum and maximum pressures.