We present a new cloud scheme for the ECHAM〩AM global climate model (GCM) that includes prognostic cloud fraction and allows for subsaturation and supersaturation with respect to ice separately in the cloud‐free and cloudy air. Stratiform clouds form by convective detrainment, turbulent vertical...
Zhang, 2007: Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM. Atmos. Chem. Phys., 7, 3719-3761.Lohmann, U., P. Stier, C. Hoose, S. Ferrachat, S. Kloster, E. Roeckner, and J. Zhang: Cloud microphysics and aerosol indirect effects in the ...
In two versions of the ECHAM-HAM model, different time integration methods are used to solve the sulfuric acid (H2SO4) gas evolution equation, which lead to substantially different results in the H2SO4 gas concentration and the aerosol nucleation rate. Using convergence tests and sensitivity ...
As ECHAM5/HAM is a size-resolved model, a new method that permits the calculation of partitioning of semi-volatile species between different size classes is introduced. We compare results of modelled organic aerosol concentrations against measurements from extensive measurement networks in Europe and ...
Zhang, K., O'Donnell, D., Kazil, J., Stier, P., Kinne, S., Lohmann, U., Ferrachat, S., Croft, B., Quaas, J., Wan, H., Rast, S., and Feichter, J.: The global aerosol-climate model ECHAM- HAM, version 2: sensitivity to improvements in process rep- ...
ECHAM5-HAM precipitation and aerosol optical depth dataBenjamin S. Grandey
This article describes and evaluates the model version ECHAM6.3-HAM2.3-MOZ1.0 with a focus on the tropospheric gas-phase chemistry. A 10-year model simulation was performed to test the stability of the model and provide data for its evaluation. The comparison to observations concentrates on the ...
Aerosol optical depthClimate changeModel assessmentAerosol BrazilECHAM-HAM and CAM5-MAM3 modelsThe accurate representation of the impacts of natural and anthropogenic aerosols in the climate system presents a challenge in General Circulation Models. This paper analyzes the performance of the aerosol ...
Implementation of a volatility basis set in ECHAM-HAM-SALSAKühn, ThomasYli-Juuti, TainaMerikanto, JoonasHienola, AncaArola, AnttiMielonen, TeroLehtinen, KariKorhonen, HanneleVirtanen, AnneleKokkola, HarriGeophysical Research Abstracts
deglacial climate simulated by ECHAM5-HAM – Part 1 : ClimatologicalDynamics, DynamicsDevelopment, Model