Modification of the Gravity Wave Parameterization in the Whole Atmosphere Community Climate Model: Motivation and Results

• Published in: Journal of the atmospheric sciences Vol. 74; no. 1; pp. 275 - 291
• Main Authors: Garcia, Rolando R., Smith, Anne K., Kinnison, Douglas E., Cámara, Álvaro de la, Murphy, Damian J.
• Format: Journal Article
• Language: English
• Published: Boston American Meteorological Society 01.01.2017
• Subjects: Antarctic temperatures; Antarctic vortex; Atmosphere; Atmospheric pressure; Bias; Circulation; Climate; Climate models; Cold; Communities; Computer simulation; Drag; Gravity; Gravity wave drag; Gravity waves; Inertia; Loads (forces); Lower thermosphere; Mesosphere; Northern Hemisphere; Orographic gravity waves; Ozone; Parameterization; Polar caps; Polar vortex; Simulation; Southern Hemisphere; Spring; Spring temperatures; Stratosphere; Temperature; Temperature effects; Thermosphere; Wave drag; Southern Hemisphere; Antarctica; Southern Ocean

The current standard version of the Whole Atmosphere Community Climate Model (WACCM) simulates Southern Hemisphere winter and spring temperatures that are too cold compared with observations. This “cold-pole bias” leads to unrealistically low ozone column amounts in Antarctic spring. Here, the cold-...