Diagnosing Warm Frontal Cloud Formation in a GCM: A Novel Approach Using Conditional Subsetting

AbstractThis study analyzes characteristics of clouds and vertical motion across extratropical cyclone warm fronts in the NASA Goddard Institute for Space Studies general circulation model. The validity of the modeled clouds is assessed using a combination of satellite observations from CloudSat, Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E), and the NASA Modern-Era Retrospective Analysis for Research and Applications (MERRA) reanalysis. The analysis focuses on developing cyclones, to test the model's ability to generate their initial structure. To begin, the extratropical cyclones and their warm fronts are objectively identified and cyclone-local fields are mapped into a vertical transect centered on the surface warm front. To further isolate specific physics, the cyclones are separated using conditional subsetting based on additional cyclone-local variables, and the differences between the subset m...

[1]  N. Nicholls,et al.  Relating global precipitation to atmospheric fronts , 2012 .

[2]  A. Bodas‐Salcedo,et al.  The Surface Downwelling Solar Radiation Surplus over the Southern Ocean in the Met Office Model: The Role of Midlatitude Cyclone Clouds , 2012 .

[3]  Kevin I. Hodges,et al.  Can Climate Models Capture the Structure of Extratropical Cyclones , 2010 .

[4]  Toby N. Carlson,et al.  Mid-Latitude Weather Systems , 1991 .

[5]  R. Marchand,et al.  A description of hydrometeor layer occurrence statistics derived from the first year of merged Cloudsat and CALIPSO data , 2009 .

[6]  G. Tselioudis,et al.  Climate feedback implied by observed radiation and precipitation changes with midlatitude storm strength and frequency , 2006 .

[7]  L. Polvani,et al.  Midlatitude storms in a moister world: lessons from idealized baroclinic life cycle experiments , 2012, Climate Dynamics.

[8]  P. Field,et al.  Precipitation and Cloud Structure in Midlatitude Cyclones , 2007 .

[9]  E. Chang,et al.  The Seasonal Cycles in the Distribution of Precipitation around Cyclones in the Western North Pacific and Atlantic , 2005 .

[10]  M. Bauer,et al.  Composite Analysis of Winter Cyclones in a GCM: Influence on Climatological Humidity , 2006 .

[11]  William B. Rossow,et al.  Major Characteristics of Southern Ocean Cloud Regimes and Their Effects on the Energy Budget , 2011 .

[12]  E. O'connor,et al.  The CloudSat mission and the A-train: a new dimension of space-based observations of clouds and precipitation , 2002 .

[13]  D. Winker,et al.  Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms , 2009 .

[14]  B. Soden,et al.  Robust Responses of the Hydrological Cycle to Global Warming , 2006 .

[15]  A. Bodas‐Salcedo,et al.  Dreary state of precipitation in global models , 2010 .

[16]  R. Neale,et al.  Midlatitude Cyclone Compositing to Constrain Climate Model Behavior Using Satellite Observations , 2008 .

[17]  R. Marchand,et al.  Hydrometeor Detection Using Cloudsat—An Earth-Orbiting 94-GHz Cloud Radar , 2008 .

[18]  C. Naud,et al.  Observational Analysis of Cloud and Precipitation in Midlatitude Cyclones: Northern versus Southern Hemisphere Warm Fronts , 2012 .

[19]  Lennart Bengtsson,et al.  Will Extratropical Storms Intensify in a Warmer Climate , 2009 .

[20]  R. Blender,et al.  IMILAST: A Community Effort to Intercompare Extratropical Cyclone Detection and Tracking Algorithms , 2013, Bulletin of the American Meteorological Society.

[21]  J. Holton.  An introduction to dynamic meteorology , 2004 .

[22]  I. Rudeva,et al.  Composite Analysis of North Atlantic Extratropical Cyclones in NCEP-NCAR Reanalysis Data , 2011 .

[23]  Mao,et al.  Cloud Simulations in Response to Turbulence Parameterizations in the GISS Model E GCM , 2012 .

[24]  U. Ulbrich,et al.  Factors contributing to the development of extreme North Atlantic cyclones and their relationship with the NAO , 2009 .

[25]  A. P. Siebesma,et al.  A Large Eddy Simulation Intercomparison Study of Shallow Cumulus Convection , 2003 .

[26]  Anthony D. Del Genio,et al.  A Prognostic Cloud Water Parameterization for Global Climate Models , 1996 .

[27]  U. Ulbrich,et al.  Factors contributing to the development of extreme North Atlantic cyclones and their relationship with the NAO , 2009 .

[28]  Shoshiro Minobe,et al.  Atmospheric Response to the Gulf Stream: Seasonal Variations* , 2010 .

[29]  M. Stoelinga.  A Potential Vorticity-Based Study of the Role of Diabatic Heating and Friction in a Numerically Simulated Baroclinic Cyclone , 1996 .

[30]  Yonghua Chen,et al.  CORRIGENDUM of the MJO Transition from Shallow to Deep Convection in Cloudsat-Calipso Data and GISS GCM Simulations , 2012 .

[31]  M. Bauer,et al.  Observational Constraints on the Cloud Thermodynamic Phase in Midlatitude Storms , 2006 .

[32]  K. Trenberth,et al.  Simulation of Present-Day and Twenty-First-Century Energy Budgets of the Southern Oceans , 2010 .

[33]  S. Schubert,et al.  MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications , 2011 .

[34]  A. Bodas‐Salcedo,et al.  Using model analysis and satellite data to assess cloud and precipitation in midlatitude cyclones , 2011 .

[35]  G. Tselioudis,et al.  Cloud and Radiation Variations Associated with Northern Midlatitude Low and High Sea Level Pressure Regimes , 2000 .

[36]  M. Bauer,et al.  Cloud Vertical Distribution across Warm and Cold Fronts in CloudSat–CALIPSO Data and a General Circulation Model , 2010 .

[37]  N. Rayner,et al.  Version 2.2 of the Global sea-Ice and Sea Surface Temperature Data Set , 1996 .

[38]  S. Bony,et al.  On dynamic and thermodynamic components of cloud changes , 2004 .

[39]  L. Bengtsson,et al.  A Comparison of Extratropical Cyclones in Recent Reanalyses ERA-Interim, NASA MERRA, NCEP CFSR, and JRA-25 , 2011 .

[40]  Keiji Imaoka,et al.  The Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E), NASDA's contribution to the EOS for global energy and water cycle studies , 2003, IEEE Trans. Geosci. Remote. Sens..

[41]  N. Lau,et al.  A Satellite View of the Synoptic-Scale Organization of Cloud Properties in Midlatitude and Tropical Circulation Systems , 1995 .

[42]  U. Lohmann,et al.  A parameterization of cirrus cloud formation: Homogeneous freezing of supercooled aerosols , 2002 .