Results
author = "Lohmann, U."
Global model simulations of the impact of ocean-going ships on aerosols, clouds, and the radiation budget
Description :
International shipping contributes significantly to the fuel consumption of all transport related activities. Specific emissions of pollutants such as sulfur dioxide (SO2) per kg of fuel emitted are higher than for road transport or aviation. Besides gaseous pollutants, ships also emit va...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Global model simulations of the impact of ocean-going ships on aerosols, clouds, and the radiation budget
Description :
International shipping contributes significantly to the fuel consumption of all transport related activities. Specific emissions of pollutants such as sulfur dioxide (SO2) per kg of fuel emitted are higher than for road transport or aviation. Besides gaseous pollutants, ships also emit va...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Simulating the global atmospheric black carbon cycle: a revisit to the contribution of aircraft emissions
Author(s) :
Hendricks, J.
,
Kärcher, B.
,
Döpelheuer, A.
,
Feichter, J.
,
Lohmann, U.
,
Baumgardner, D.
Description :
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of aircraft emissions to the UTLS BC loading. Previous studies on the role of aircraft emissions in the globa...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
Author(s) :
Lohmann, U.
,
Stier, P.
,
Hoose, C.
,
Ferrachat, S.
,
Kloster, S.
,
Roeckner, E.
,
Zhang, J.
Description :
The double-moment cloud microphysics scheme from ECHAM4 that predicts both the mass mixing ratios and number concentrations of cloud droplets and ice crystals has been coupled to the size-resolved aerosol scheme ECHAM5-HAM. ECHAM5-HAM predicts the aerosol mass, number concentrations and mixing state...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
Description :
The double-moment cloud microphysics scheme from ECHAM4 has been coupled to the size-resolved aerosol scheme ECHAM5-HAM. ECHAM5-HAM predicts the aerosol mass and number concentrations and the aerosol mixing state. This results in a much better agreement with observed vertical profiles of the black c...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Simulating the global atmospheric black carbon cycle: a revisit to the contribution of aircraft emissions
Author(s) :
Hendricks, J.
,
Kärcher, B.
,
Döpelheuer, A.
,
Feichter, J.
,
Lohmann, U.
,
Baumgardner, D.
Description :
The black carbon (BC) burden of the upper troposphere and lowermost stratosphere (UTLS) is investigated with the general circulation model (GCM) ECHAM4. The special focus is the contribution of aircraft emissions to the UTLS BC loading. Previous studies on the role of aircraft emissions in the globa...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity
Author(s) :
Haag, W.
,
Kärcher, B.
,
Ström, J.
,
Minikin, A.
,
Lohmann, U.
,
Ovarlez, J.
,
Stohl, A.
Description :
Factors controlling the distribution of relative humidity above ice saturation in the upper troposphere and lower stratosphere in the presence of cirrus clouds are examined with the help of microphysical trajectory simulations using a box model. Our findings are related to results from recent field ...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity
Author(s) :
Haag, W.
,
Kärcher, B.
,
Ström, J.
,
Minikin, A.
,
Lohmann, U.
,
Ovarlez, J.
,
Stohl, A.
Description :
Factors controlling the microphysical link between distributions of relative humidity above ice saturation in the upper troposphere and lowermost stratosphere and cirrus clouds are examined with the help of microphysical trajectory simulations. Our findings are related to results from aircraft measu...
Repository :
HAL - Hyper Article on Line
Language(s) :
English
Aerosol processing in mixed-phase clouds in ECHAM5-HAM: Model description and comparison to observations
Description :
Repository :
Oxford University Research Archive (ORA)
Language(s) :
Undetermined
Interpreting the cloud cover - aerosol optical depth relationship found in satellite data using a general circulation model
Description :
Repository :
Oxford University Research Archive (ORA)
Language(s) :
Undetermined