A Venus International Reference Atmosphere (VIRA), from 0 to 100 km, has been compiled by COSPAR [RD.47] It consists of a deep atmosphere, extending from 0 to 32 km (altitudes are referenced to a planetary radius of 6 052 km) whose vertical structure is independent of latitude and characterized by a surface pressure of 92,1 bars, surface temperature of 753,3 K and surface density of 64,8 kg m-3 and a lapse rate increasing from 8 to 9 K km-1. Above 32 km, the atmosphere shows some latitude dependence, and is tabulated by bands of latitude.