Access to atmospheric data reaches new heights



The newly updated Global Reference Atmospheric Model (GRAM-95) provides complete geographical, altitude, and monthly variations of atmospheric temperature, pressure, density, and winds for the troposphere, stratosphere, mesosphere, and thermosphere. The model can also simulate spatial and temporal perturbations in these atmospheric state parameters. Estimates are included for atmospheric concentrations of water vapor, ozone, nitrous oxide, carbon monoxide, methane, carbon dioxide, nitrogen, molecular oxygen, atomic oxygen, argon, and helium below 90 km and nitrogen, molecular oxygen, atomic oxygen, argon, helium, and hydrogen above 90 km. Other features include a new variable-scale perturbation model and a pressure perturbation model.