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Revision of the convective transport module CVTRANS 2.4 in the EMAC atmospheric chemistry–climate model
EMAC atmospheric chemistry–climate model convective transport
2015/8/11
The convective transport module, CVTRANS,
of the ECHAM/MESSy Atmospheric Chemistry (EMAC)
model has been revised to better represent the physical flows
and incorporate recent findings o...
Quantitative assessment of Southern Hemisphere ozone in chemistry-climate model simulations
Quantitative assessment Southern Hemisphere ozone chemistry-climate model
2010/2/21
Stratospheric ozone recovery in the Southern Hemisphere is expected to drive pronounced trends in atmospheric temperature and circulation from the stratosphere to the troposphere in the 21st century; ...
Implications of Lagrangian transport for simulations with a coupled chemistry-climate model
Lagrangian transport simulations coupled chemistry-climate model
2009/8/7
For the first time a purely Lagrangian transport algorithm is applied in a fully coupled chemistry-climate model (CCM). We use the numerically non-diffusive Lagrangian scheme ATTILA instead of the ope...
The effect of the solar rotational irradiance variation on the middle and upper atmosphere calculated by a three-dimensional chemistry-climate model
solar rotational irradiance variation atmosphere three-dimensional chemistry-climate model
2009/3/12
This paper analyzes the effects of the solar rotational (27-day) irradiance variations on the chemical composition and temperature of the stratosphere, mesosphere and lower thermosphere as simulated b...
Impact of large solar zenith angles on lower stratospheric dynamical and chemical processes in a coupled chemistry-climate model
large solar zenith angles lower stratospheric dynamical chemical processes coupled chemistry-climate model
2009/3/11
Actinic fluxes at large solar zenith angles (SZAs) are important for atmospheric chemistry, especially under twilight conditions in polar winter and spring. The results of a sensitivity experiment emp...
Past and future simulations of NO2 from a coupled chemistry-climate model in comparison with observations
NO2 coupled chemistry-climate model
2009/3/9
Trends in derived from a 45 year integration of a chemistry-climate model (CCM) run have been compared with ground-based measurements at Lauder (45° S) and Arrival Heights (78° S). Observed trends in ...
Technical Note: A diagnostic for ozone contributions of various NOx emissions in multi-decadal chemistry-climate model simulations
ozone contributions various NOx emissions multi-decadal chemistry-climate model
2009/2/26
Nitrogen oxide (NOx=NO+NO2) emissions from various sources contribute to the ozone budget. The identification of these contributions is important, e.g. for the assessment of emissions from traffic. Th...
Influence of convective transport on tropospheric ozone and its precursors in a chemistry-climate model
convective transport tropospheric ozone chemistry-climate model
2009/2/19
The impact of convection on tropospheric O3 and its precursors has been examined in a coupled chemistry-climate model. There are two ways that convection affects O3. First, convection affects O3 by ve...
Long-term changes and variability in a transient simulation with a chemistry-climate model employing realistic forcing
transient simulation chemistry-climate model realistic forcing
2009/2/16
A transient simulation with the interactively coupled chemistry-climate model (CCM) E39/C has been carried out which covers the 40-year period between 1960 and 1999. Forcing of natural and anthropogen...
Chemistry-climate model SOCOL: a validation of the present-day climatology
Chemistry-climate model SOCOL present-day climatology
2009/2/11
In this paper we document "SOCOL", a new chemistry-climate model, which has been ported for regular PCs and shows good wall-clock performance. An extensive validation of the model results against pres...
Hemispheric ozone variability indices derived from satellite observations and comparison to a coupled chemistry-climate model
Hemispheric ozone satellite observations coupled chemistry-climate model
2009/1/19
Total column ozone is used to trace the dynamics of the lower and middle stratosphere which is governed by planetary waves. In order to analyse the planetary wave activity a Harmonic Analysis is appli...
Nitrogen compounds and ozone in the stratosphere: comparison of MIPAS satellite data with the chemistry climate model ECHAM5/MESSy1
Nitrogen compounds ozone stratosphere MIPAS satellite data ECHAM5/MESSy1
2008/12/24
The chemistry climate model ECHAM5/MESSy1 (E5/M1) in a setup extending from the surface to 80 km with a vertical resolution of about 600 m near the tropopause with nudged tropospheric meteorology allo...
Solar cycle variations of stratospheric ozone and temperature in simulations of a coupled chemistry-climate model
Solar cycle stratospheric ozone coupled chemistry-climate model
2008/12/4
The results from three 45-year simulations of a coupled chemistry climate model are analysed for solar cycle influences on ozone and temperature. The simulations include UV forcing at the top of the a...
The global impact of supersaturation in a coupled chemistry-climate model
supersaturation coupled chemistry-climate model
2008/12/4
Ice supersaturation is important for understanding condensation in the upper troposphere. Many general circulation models however do not permit supersaturation. In this study, a coupled chemistry clim...
The quasi-biennial oscillation (QBO) of zonal wind is a prominent mode of variability in the tropical stratosphere. It affects not only the meridional circulation and temperature over a wide latitude ...