Data for the article "Early Eocene low orography and high methane enhance Arctic warming via polar stratospheric clouds"

DJF mean cloud fraction, water vapor concentration, relative humidity, temperature, zonal wind, forward and reverse PRP output from PORT over the Arctic.Files starting with ep1, ep2 contain the meridional and vertical DJF mean EP flux components. AllWave, wave1 and wave2 at the end of the files give EP flux associated with all zonal wave numbers, wave number 1 and wave number 2, respectively. For example, ep2_DJFmean_Eocene_64M_wave1.nc contains DJF mean vertical component of EP flux for the Eocene 64× CH4 experiment associated with zonal wave number 1. The refractive index files (starting with n2-) are named using a similar procedure.Files psis files contain residual stream function data.