EGU2020-2231
https://doi.org/10.5194/egusphere-egu2020-2231
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Preliminary Results of Simulation of SOCRATES period with Global System for Atmospheric Modeling

Marat Khairoutdinov1 and Christopher Bretherton2
Marat Khairoutdinov and Christopher Bretherton
  • 1Stony Brook University, Stony Brook, NY, USA (marat.khairoutdinov@stonybrook.edu)
  • 2University of Washington, Seattle, WA, USA

The global version of the cloud-resolving System for Atmospheric Modeling (SAM) is used to simulate the global evolution of clouds and precipitation during the SOCRATES field campaign In Feb 2018 with particular focus on the Southern Ocean storm track region. The model has nonuniform horizontal resolution, which ranges from 4-km horizontal grid spacing over the Tropics up to 2-3 km isotropic grid-spacing over mid-latitudes. It includes a realistic topography and comprehensive land-surface model. The sea-surface temperature and sea ice are prescribed from observations. The results of two types of simulations are presented, weather-forecasting and observed-weather-nudged over 24-hour time scale; for the latter, hourly ERA5 reanalysis dataset is used. The cloud properties are compared to the SOCRATES observations. The sensitivity of the results to the choice of cloud microphysics, from simple single-moment to double-moment, is also discussed.

How to cite: Khairoutdinov, M. and Bretherton, C.: Preliminary Results of Simulation of SOCRATES period with Global System for Atmospheric Modeling, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-2231, https://doi.org/10.5194/egusphere-egu2020-2231, 2020

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