The Response of the Middle Atmosphere to Solar Cycle Forcing in the Hamburg Model of the Neutral and Ionized Atmosphere |
| |
Authors: | H Schmidt G P Brasseur |
| |
Institution: | (1) Max Planck Institute for Meteorology, Bundesstr. 53, D-20146 Hamburg, Germany;(2) Present address: National Center for Atmospheric Research, Boulder, Colorado, USA |
| |
Abstract: | This paper studies the response of the middle atmosphere to the 11-year solar cycle. The study is based on numerical simulations
with the Hamburg Model of the Neutral and Ionized Atmosphere (HAMMONIA), a chemistry climate model that resolves the atmosphere
from the Earth’s surface up to about 250 km. Results presented here are obtained in two multi-year time-slice runs for solar
maximum and minimum conditions, respectively. The magnitude of the simulated annual and zonal mean stratospheric response
in temperature and ozone corresponds well to observations. The dynamical model response is studied for northern hemisphere
winter. Here, the zonal mean wind change differs substantially from observations. The statistical significance of the model’s
dynamical response is, however, poor for most regions of the atmosphere. Finally, we discuss several issues that render the
evaluation of model results with available analyses of observational data of the stratosphere and mesosphere difficult. This
includes the possibility that the atmospheric response to solar variability may depend strongly on longitude. |
| |
Keywords: | middle atmosphere solar cycle chemistry climate modeling |
本文献已被 SpringerLink 等数据库收录! |
|