论文信息 - Intercomparison of model simulations of mixed‐phase clouds observed during the ARM Mixed‐Phase Arctic Cloud Experiment. I: single‐layer cloud - 字舞流文

Intercomparison of model simulations of mixed‐phase clouds observed during the ARM Mixed‐Phase Arctic Cloud Experiment. I: single‐layer cloud

Results are presented from an intercomparison of single-column and cloud-resolving model simulations of a cold-air outbreak mixed-phase stratocumulus cloud observed during the Atmospheric Radiation Measurement (ARM) programme's Mixed-Phase Arctic Cloud Experiment. The observed cloud occurred in a well-mixed boundary layer with a cloud-top temperature of −15 ◦ C. The average liquid water path of around 160 g m −2 was about two-thirds of the adiabatic value and far greater than the average mass of ice which when integrated from the surface to cloud top was around 15 gm −2 . Simulations of 17 single-column models (SCMs) and 9 cloud-resolving models (CRMs) are compared. While the simulated ice water path is generally consistent with observed values, the median SCM and CRM liquid water path is a factor-of-three smaller than observed. Results from a sensitivity study in which models removed ice microphysics suggest that in many models the interaction between liquid and ice-phase microphysics is responsible for the large model underestimate of liquid water path. Despite this underestimate, the simulated liquid and ice water paths of several models are consistent with observed values. Furthermore, models with more sophisticated microphysics simulate liquid and ice water paths that are in better agreement with the observed values, although considerable scatter exists. Although no single factor guarantees a good simulation, these results emphasize the need for improvement in the model representation of mixed-phase microphysics. Copyright c � 2009 Royal Meteorological Society

Sungsu Park | David D. Turner | Ann M. Fridlind | Greg Michael McFarquhar | Renata McCoy | Vincent E. Larson | Tempei Hashino | Michael J. Foster | Douglas A. Spangenberg | Jean-Christophe Golaz | Shaocheng Xie | Corinna Hoose | Dana E. Veron | Roel Neggers | Yali Luo | Gijs de Boer | Hugh Morrison | Kuan-Man Xu | Jason N. S. Cole | Ben Shipway | Michael R. Poellot | Fanglin Yang | Andrew S. Ackerman | Matthew D. Shupe | Audrey B. Wolf | Anthony D. Del Genio | Yogesh C. Sud | Gregory K. Walker | Marat Khairoutdinov | Xiaohong Liu | Stephen A. Klein | Mingxuan Chen | S. Klein | G. McFarquhar | Y. Sud | A. D. Del Genio | S. Menon | J. Cole | K. Salzen | Sungsu Park | M. Shupe | Xiaohong Liu | J. Harrington | V. Larson | M. Khairoutdinov | S. Xie | Zhien Wang | J. Golaz | H. Morrison | M. Poellot | Fanglin Yang | D. Spangenberg | C. Hoose | M. Foster | A. Avramov | G. Boer | D. Turner | A. Ackerman | A. Fridlind | D. Veron | Yali Luo | B. Shipway | T. Hashino | Kuan Xu | I. Sednev | R. McCoy | R. Neggers | G. Walker | A. Wolf | Gong Zhang | Jerome M. Schmidt | Zhien Wang | Jerry Y. Harrington | Surabi Menon | Igor Sednev | Mingxuan Chen | Alexander Avramov | Knut von Salzen | Michael J. Falk | Gong Zhang | J. Schmidt | M. Falk | S. Klein

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