TY - JOUR
T1 - Cloud resolving simulations of Arctic stratus part II
T2 - Transition-season clouds
AU - Harrington, Jerry Y.
AU - Reisin, Tamir
AU - Cotton, William R.
AU - Kreidenweis, Sonia M.
N1 - Funding Information:
J.Y. Harrington has been supported by the Augmentation Awards for Science and Engineering Training under Contract F49620-95-1-0386 and through the Geophysical Institute at the University of Alaska Fairbanks. Support for W.R. Cotton, Tamir Reisin and S.M. Kreidenweis was through the Environmental Sciences Division of U.S. Department of Energy (under contract number DE-FG03-95ER61958) as part of the Atmospheric Radiation Measurement Program which is part of the DOE Biological and Environmental Research (BER) Program as well as the Air Force Office of Scientific Research under grant F49620-95-1-0132. We would like to thank the two anonymous reviewers whose comments greatly improved this manuscript.
PY - 1999/4
Y1 - 1999/4
N2 - Two-dimensional simulations of transition (fall and spring) season Arctic stratus clouds (ASC) were conducted using a sophisticated cloud resolving model with bin microphysics coupled to a two-stream radiative transfer model. The impacts of temperature variation and various ice microphysical processes on the evolution of the simulated mixed-phase ASC layer are studied. Cloud layers either collapse through rapid glaciation and ice precipitation from the cloud layer or maintain a quasi-steady state. Sensitivity studies show that the stability of the mixed-phase cloud layer is dependent upon the temperature, ice concentration, and the habit of the ice crystals. In particular, cloud layer stability is shown to be most strongly dependent upon the concentration of ice forming nuclei (IFN). In addition, it is shown that ice production and sedimentation can assist the formation of a second, lower cloud layer suggesting a new mechanism of multiple-layer formation in the Arctic.
AB - Two-dimensional simulations of transition (fall and spring) season Arctic stratus clouds (ASC) were conducted using a sophisticated cloud resolving model with bin microphysics coupled to a two-stream radiative transfer model. The impacts of temperature variation and various ice microphysical processes on the evolution of the simulated mixed-phase ASC layer are studied. Cloud layers either collapse through rapid glaciation and ice precipitation from the cloud layer or maintain a quasi-steady state. Sensitivity studies show that the stability of the mixed-phase cloud layer is dependent upon the temperature, ice concentration, and the habit of the ice crystals. In particular, cloud layer stability is shown to be most strongly dependent upon the concentration of ice forming nuclei (IFN). In addition, it is shown that ice production and sedimentation can assist the formation of a second, lower cloud layer suggesting a new mechanism of multiple-layer formation in the Arctic.
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U2 - 10.1016/S0169-8095(98)00098-2
DO - 10.1016/S0169-8095(98)00098-2
M3 - Article
AN - SCOPUS:0033387415
SN - 0169-8095
VL - 51
SP - 45
EP - 75
JO - Atmospheric Research
JF - Atmospheric Research
IS - 1
ER -