Extended Data Fig. 6: Distribution of the terrain units.
From: Evidence of haze control of Pluto’s atmospheric heat balance from JWST/MIRI thermal light curves
(Top) Charon: the albedo value A = 0.2 delimits the two units (H2O ice and the red poles). (Middle) Pluto: Reference scenario, as in27. The albedo values A = 0.38 and A = 0.79 delimit the three units: dark materials (red), methane ice (yellow), nitrogen ice (red). (Bottom) Pluto: Alternative scenario (for simulation Alt_U_0.5), roughly based on New Horizons spectroscopic observations3,4 with N2 ice in Sputnik Planitia, in local depressions in East Tombaugh Regio and in a mid-latitudinal band, while the north pole contains CH4 ice only.
