********** If you need help, please email to Jun Yang, junyang@pku.edu.cn Model: CAM3, developed by NCAR. We modified it for our simulations. CAM3 is a 3D atmospheric general circulation model. Spatial resolution: 64x128 grid number in lat x lon; Temporal resolution: unlimited; Variables in the data files: surface temperature, water vapor concentration, velocities, etc. ********** model source code for obtaining the data: cam31p2_gpc.zip glacierball2.only_SourceMods.zip glacierball3.only_SourceMods.zip These files include all of the source code used to generate the data listed below. I used the supercomputer cluster SciNet, which is a component of the Compute Canada HPC platform. It could be not difficult to run on other systems. ******************** Data for Figure 1 in the main text: (1) G-star spectrum, surface--sea ice/snow, albedo = 0.5, snow albedo =0.8; (2) the stellar fluxes at the substellar point are 1000, 1200, 1400, 1600, and 1800, respectively; (3) the atmosphere model is coupled to a glacier ice (rather than sea ice) model; (4) In the title, Ic50 denotes ice albedo being equal to 0.5, Sn80 snow albedo 0.8, Gs G-star spectrum, 1000 is the stellar flux; 1x64x128 is the resolution for time, latitude grid number, and longitude grid number; (5) rotation period is 1 day, and orbital period is 365 days; h1_gla3_fgla2_Ic50Sn80_Zlnd0005_Gs1000.cam2.h0.1x64x128.ann-mean.nc h3fh1_gla3_Ic50Sn80_Zlnd0005_Gs1600.cam2.h0.1x64x128.ann-mean.nc h8fh1_gla3_Ic50Sn80_Zlnd0005_Gs1200.cam2.h0.1x64x128.ann-mean.nc h9fh1_gla3_Ic50Sn80_Zlnd0005_Gs1400.cam2.h0.1x64x128.ann-mean.nc hcfh1_gla3_Ic50Sn80_Zlnd0005_Gs1800.cam2.h0.1x64x128.ann-mean.nc ******************** Data for Figure 2 in the main text: panel (a): 1) ice albedo =0.4, snow albedo =0.7 i2_gla3_fgla2_Ic40Sn70_Zlnd0005_Gs1400.cam2.h0.1x64x128.ann-mean.nc i3fi2_gla3_fgla2_Ic40Sn70_Zlnd0005_Gs1500.cam2.h0.1x64x128.ann-mean.nc i4fi2_gla3_fgla2_Ic40Sn70_Zlnd0005_Gs1600.cam2.h0.1x64x128.ann-mean.nc 2) pN2 = 10 bars p30_gla3_Ic50Sn80_Zlnd0005_h2osno100_10barN2_S1500_AdCO2.cam2.h0.1x64x128.ann-mean.nc p31_gla3_Ic50Sn80_Zlnd0005_h2osno100_10barN2_S1600_AdCO2.cam2.h0.1x64x128.ann-mean.nc p32_gla3_Ic50Sn80_Zlnd0005_h2osno100_10barN2_S1700_AdCO2.cam2.h0.1x64x128.ann-mean.nc p33_gla3_Ic50Sn80_Zlnd0005_h2osno100_10barN2_S1800_AdCO2.cam2.h0.1x64x128.ann-mean.nc 3) change planetary radius p17_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_R3186km_1800.cam2.h0.1x64x128.ann-mean.nc p19_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_R1561km_1850.cam2.h0.1x64x128.ann-mean.nc 4) eccentricity = 0.3 p15fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_eccen03_1750.cam2.h0.1x64x128.ann-mean.nc p16fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_eccen03_1650.cam2.h0.1x64x128.ann-mean.nc f3_fe3gpc_e03_997glacier_S1500_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc f4_fe3gpc_e03_997glacier_S1600_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc f5_fe3gpc_e03_997glacier_S1700_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc 5) change cloud ice particle size p09fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_Ricex2_1650.cam2.h0.1x64x128.ann-mean.nc p10fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_Ricex2_1800.cam2.h0.1x64x128.ann-mean.nc p11fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_Ricex05_1750.cam2.h0.1x64x128.ann-mean.nc p12fh1_gla3_Gs1000_Ic50Sn80_Zlnd0005_h2osno100_Ricex05_1850.cam2.h0.1x64x128.ann-mean.nc 6) obliquity = 30 o1_gla3_fgla2_Ic50Sn80_Zlnd0005_Gs1500_Obli30.cam2.h0.1x64x128.ann-mean.nc q1fo1_gla3_fgla2_Ic50Sn80_Zlnd0005_Obli30_Gs1900.cam2.h0.1x64x128.ann-mean.nc q2fo1_gla3_fgla2_Ic50Sn80_Zlnd0005_Obli30_Gs1800.cam2.h0.1x64x128.ann-mean.nc o1gpc_997glacier_S1600_Obli30_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc s1_fo1gpc_997glacier_S1800_Obli30_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc s2_fo1gpc_997glacier_S1900_Obli30_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc 7) surface topographic height: j1_gla3_Ic50Sn80_Zlnd0005_Gs1600_EarthPHIS.cam2.h0.1x64x128.ann-mean.nc j2fj1_gla3_Ic50Sn80_Zlnd0005_Gs1700_EarthPHIS.cam2.h0.1x64x128.ann-mean.nc j3fj1_gla3_Ic50Sn80_Zlnd0005_Gs1800_EarthPHIS.cam2.h0.1x64x128.ann-mean.nc data for panel (b): f8ff1_gla3_Ic55Sn85_Zlnd0005_Fs1200.cam2.h0.1x64x128.ann-mean.nc f2ff1_gla3_Ic55Sn85_Zlnd0005_Fs1400.cam2.h0.1x64x128.ann-mean.nc f9ff1_gla3_Ic55Sn85_Zlnd0005_Fs1600.cam2.h0.1x64x128.ann-mean.nc f3ff1_gla3_Ic55Sn85_Zlnd0005_Fs1800.cam2.h0.1x64x128.ann-mean.nc faff1_gla3_Ic55Sn85_Zlnd0005_Fs2000.cam2.h0.1x64x128.ann-mean.nc f4ff1_gla3_Ic55Sn85_Zlnd0005_Fs2200.cam2.h0.1x64x128.ann-mean.nc g6_ff1gpc_997glacier_S2000_Obli00_Gla70_Ice70_noSZA_Fstar.cam2.h0.1x64x128.ann-mean.nc g7_ff1gpc_997glacier_S2200_Obli00_Gla70_Ice70_noSZA_Fstar.cam2.h0.1x64x128.ann-mean.nc g8_ff1gpc_997glacier_S2400_Obli00_Gla70_Ice70_noSZA_Fstar.cam2.h0.1x64x128.ann-mean.nc i1_S1600_997glacier_Obli00_Gla60_Ice60_noSZA_Fstar.cam2.h0.1x64x128.ann-mean.nc i2_S1700_997glacier_Obli00_Gla60_Ice60_noSZA_Fstar.cam2.h0.1x64x128.ann-mean.nc data for panel (c ): l3_fk1gpc_997glacier_S1100_Obli00_Gla50_Ice50_noSZA_Kstar.cam2.h0.1x64x128.ann-mean.nc l4_fk1gpc_997glacier_S1200_Obli00_Gla50_Ice50_noSZA_Kstar.cam2.h0.1x64x128.ann-mean.nc l5_fk1gpc_997glacier_S1300_Obli00_Gla50_Ice50_noSZA_Kstar.cam2.h0.1x64x128.ann-mean.nc k2_997glacier_S1100_Obli00_Gla40_Ice40_noSZA_Kstar.cam2.h0.1x64x128.ann-mean.nc k3_997glacier_S1000_Obli00_Gla40_Ice40_noSZA_Kstar.cam2.h0.1x64x128.ann-mean.nc ****************** ** Data for Figure 3 in the main text: T1_Gstar_Obli00_S1700_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc T2_Fstar_Obli00_S2100_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc T3_Kstar_Obli00_S1300_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc ****************** ** Data for Figure S1: a1gpc_997glacier_S800_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc b1_fa1gpc_997glacier_S1000_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc b3_fa1gpc_997glacier_S1200_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc b5_fa1gpc_997glacier_S1400_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc b7_fa1gpc_997glacier_S1600_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc mean_camdomcntl.cam2.h0.0029-avg.nc ******************* * Data for Figure S2: t2_PS10bar_997gla_Gla60_Ice60_S1600_AdCO2.cam2.h0.1x64x128.ann-mean.nc b7_fa1gpc_997glacier_S1600_Obli00_Gla60_Ice60_noSZA.cam2.h0.1x64x128.ann-mean.nc ***************** *** Data for Figure S3: T1_Gstar_Obli00_S1700_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc T2_Fstar_Obli00_S2100_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc ***************** *** Data for Figure S4: Ta_fT5_Gs_Obli00_S1600_Ciceliqx2.cam2.h0.64x128.time_lev.global_mean.nc Tb_fT5_Gs_Obli00_S1600_Ciceliqx05.cam2.h0.64x128.time_lev.global_mean.nc Tf_startup_Gs_Obli00_S1600_Grav1p3.cam2.h0.64x128.time_lev.global_mean.nc Tg_startup_Gs_Obli00_S1600_Grav1p3_Radix0p245.cam2.h0.64x128.time_lev.global_mean.nc Th_startup_Gs_Obli00_S1600_Grav4p9_Radix0p5.cam2.h0.64x128.time_lev.global_mean.nc Tm_fT5_Gs_Obli00_S1600_Radix0p245.cam2.h0.64x128.time_lev.global_mean.nc Tn_fT5_Gs_Obli00_S1600_Radix0p5.cam2.h0.64x128.time_lev.global_mean.nc To_startup_Gs_Obli00_S1600_Grav4p9.cam2.h0.64x128.time_lev.global_mean.nc ***************** *** Data for Figure S5: T5_Gstar_Obli00_S1600_snowball_to_icefree.cam2.h0.0100-0109.avg.nc Tm_fT5_Gs_Obli00_S1600_Radix0p245.cam2.h0.0100-0109.avg.nc T5_Gstar_Obli00_S1600_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc **************** **** Data for Figure S6: x8_997glacier_S1800_Obli00_Gla60_Ice60_noSZA_C3.cam2.h0.1x64x128.ann-mean.nc xe_997glacier_S1600_Obli00_Gla60_Ice60_noSZA_C300.cam2.h0.1x64x128.ann-mean.nc xb_997glacier_S1500_Obli00_Gla60_Ice60_noSZA_C3000.cam2.h0.1x64x128.ann-mean.nc xm_997glacier_S1400_Obli00_Gla60_Ice60_noSZA_C30000.cam2.h0.1x64x128.ann-mean.nc xx_997glacier_S1300_Obli00_Gla60_Ice60_noSZA_C100000.cam2.h0.1x64x128.ann-mean.nc y2_997glacier_S2000_Obli00_Gla80_Ice50_noSZA_C3.cam2.h0.1x64x128.ann-mean.nc y6_997glacier_S1800_Obli00_Gla80_Ice50_noSZA_C30.cam2.h0.1x64x128.ann-mean.nc yv_997glacier_S1800_Obli00_Gla80_Ice50_noSZA_C300.cam2.h0.1x64x128.ann-mean.nc ya_997glacier_S1700_Obli00_Gla80_Ice50_noSZA_C3000.cam2.h0.1x64x128.ann-mean.nc yg_997glacier_S1600_Obli00_Gla80_Ice50_noSZA_C30000.cam2.h0.1x64x128.ann-mean.nc ym_997glacier_S1500_Obli00_Gla80_Ice50_noSZA_C100000.cam2.h0.1x64x128.ann-mean.nc ****************** ** Data for Figure S7: T4_Gstar_Obli00_S1360_C01_snowball_to_icefree.cam2.h0.64x128.time_lev.global_mean.nc