Aerosol indirect effects in ECHAM5-HAM
نویسندگان
چکیده
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM U. Lohmann, P. Stier, C. Hoose, S. Ferrachat, E. Roeckner, and J. Zhang Institute of Atmospheric and Climate Science, ETH Zurich, Switzerland Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, USA Max Planck Institute for Meteorology, Hamburg, Germany Meteorological Service of Canada, Toronto, Canada Received: 22 February 2007 – Accepted: 8 March 2007 – Published: 12 March 2007 Correspondence to: U. Lohmann ([email protected])
منابع مشابه
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
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 ECHAM5HAM. ECHAM5-HAM predicts the aerosol mass, number concentrations and mixing state. The simulated liquid, ice and total water content and the cloud droplet and ice crystal number c...
متن کاملEstimating the direct and indirect effects of secondary organic aerosols using ECHAM5-HAM
Secondary organic aerosol (SOA) has been introduced into the global climate-aerosol model ECHAM5/HAM. The SOA module handles aerosols originating from both biogenic and anthropogenic sources. The model simulates the emission of precursor gases, their chemical conversion into condensable gases, the partitioning of semi-volatile condenable species into the gas and aerosol phases. As ECHAM5/HAM is...
متن کاملGlobal anthropogenic aerosol effects on convective clouds in ECHAM5-HAM
Aerosols affect the climate system by changing cloud characteristics in many ways. They act as cloud condensation and ice nuclei and may have an influence on the hydrological cycle. Here we investigate aerosol effects on convective clouds by extending the double-moment cloud microphysics scheme developed for stratiform clouds, which is coupled to the HAM double-moment aerosol scheme, to convect...
متن کاملSensitivity studies of different aerosol indirect effects in mixed-phase clouds
Aerosols affect the climate system by changing cloud characteristics. Using the global climate model ECHAM5-HAM, we investigate different aerosol effects on mixed-phase clouds: The glaciation effect, which refers to a more frequent glaciation due to anthropogenic aerosols, versus the de-activation effect, which suggests that ice nuclei become less effective because of an anthropogenic sulfate c...
متن کاملAerosol activation and cloud processing in ECHAM5-HAM
Aerosol activation and cloud processing in the global aerosol-climate model ECHAM5-HAM G. J. Roelofs, P. Stier, J. Feichter, E. Vignati, and J. Wilson Institute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht University, Utrecht, The Netherlands Max Planck Institute for Meteorology, The Atmosphere in the Earth System, Hamburg, Germany Institute for the Environment and Sustainability...
متن کامل