Fig. 6
From: A role for orbital eccentricity in Earth’s seasonal climate
The relative contributions of distance and tilt to the annual cycle for various fields. The ratio of distance effect amplitude to tilt effect amplitude for a surface temperature, b 500mb geopotential height, c precipitation, and d zonal wind stress. The amplitudes are calculated by fitting Eq. 1 to each gridpoint, using the CESM LOP runs of Chiang et al. (2022) with e = 0.02. We use the e = 0.02 simulation here as it is close to the present-day value of e ~ 0.017. See Sect. “Appendix” for details of the calculation. Areas with no shading have ratios less than 20%; deep blue shading indicates that the distance effect amplitude is comparable or larger than the tilt effect amplitude