Accelerating Change in the Arctic? Perspectives from Observations and Global Climate Models David Lawrence NCAR With contributions from Marika Holland,
Altitude (km) January Global AverageTemperature (K) Pressure (hPa) With O( 3 P) Cooling WACCM-X The Whole Atmosphere Community Climate Model – eXtended.
Objective
Simulate the vertical profile of methanesulfonic acid (MSA) over tropical Pacific