Phenomenological Description of Tropical Clouds UsingCloudSatCloud Classification

AbstractTwo years of tropical oceanic cloud observations are analyzed using the operational CloudSat cloud classification product and Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) lidar. Relationships are examined between cloud types, sea surface temperature (SST), and location during the CloudSat early morning and afternoon overpasses. Based on CloudSat and combined lidar–radar products, the maximum and minimum cloud fractions occur at SSTs near 303 and 299 K, respectively, corresponding to deep convective/detrained cloud populations and the transition from shallow to deep convection. For SSTs below approximately 301 K, low clouds (stratiform and stratocumulus) are dominant (cloud fraction between 0.15 and 0.37) whereas high clouds are dominant for SSTs greater than about 301 K (cloud fraction between 0.18 and 0.28). Consistent with previous studies, most tropical low clouds are associated with lower SSTs, with a strong inverse linear relationship between low cloud frequenc...

[1]  T. Kubar,et al.  On the Annual Cycle, Variability, and Correlations of Oceanic Low-Topped Clouds with Large-Scale Circulation Using Aqua MODIS and ERA-Interim , 2012 .

[2]  Stephen G. Warren,et al.  Variations in Cloud Cover and Cloud Types over the Ocean from Surface Observations, 1954-2008 , 2011 .

[3]  T. Wong,et al.  An Estimate of Low-Cloud Feedbacks from Variations of Cloud Radiative and Physical Properties with Sea Surface Temperature on Interannual Time Scales , 2011 .

[4]  T. Kubar,et al.  Boundary Layer and Cloud Structure Controls on Tropical Low Cloud Cover Using A-Train Satellite Data and ECMWF Analyses , 2011 .

[5]  S. Xie,et al.  Changes in the sea surface temperature threshold for tropical convection , 2010 .

[6]  Hartmut H. Aumann,et al.  Deep convective clouds at the tropopause , 2010 .

[7]  Shoichi Shige,et al.  Shallow and Deep Latent Heating Modes over Tropical Oceans Observed with TRMM PR Spectral Latent Heating Data , 2010 .

[8]  An observed tropical oceanic radiative-convective cloud feedback. , 2010 .

[9]  R. Pierrehumbert,et al.  Global warming, convective threshold and false thermostats , 2009 .

[10]  Hiroaki Miura,et al.  Diurnal Cycle of Precipitation in the Tropics Simulated in a Global Cloud-Resolving Model , 2009 .

[11]  Robert Burgman,et al.  Observational and Model Evidence for Positive Low-Level Cloud Feedback , 2009, Science.

[12]  N. Loeb,et al.  Reply to Comments on “Seasonal Variation of the Physical Properties of Marine Boundary Layer Clouds off the California Coast” , 2010 .

[13]  G. Vecchi,et al.  Simulated reduction in Atlantic hurricane frequency under twenty-first-century warming conditions , 2008 .

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

[15]  Kenneth Sassen,et al.  Classifying clouds around the globe with the CloudSat radar: 1‐year of results , 2008 .

[16]  Robert Wood,et al.  Radiative and Convective Driving of Tropical High Clouds , 2007 .

[17]  D. Winker,et al.  Initial performance assessment of CALIOP , 2007 .

[18]  Wenbo Sun,et al.  Coincident occurrences of tropical individual cirrus clouds and deep convective systems derived from TRMM observations , 2007 .

[19]  Bruce A. Wielicki,et al.  Statistical Analyses of Satellite Cloud Object Data from CERES. Part II: Tropical Convective Cloud Objects during 1998 El Niño and Evidence for Supporting the Fixed Anvil Temperature Hypothesis , 2007 .

[20]  Patrick Minnis,et al.  The Effect of Environmental Conditions on Tropical Deep Convective Systems Observed from the TRMM Satellite , 2006 .

[21]  C. Bretherton,et al.  Geographic variability in the export of moist static energy and vertical motion profiles in the tropical Pacific , 2006 .

[22]  R. Wood,et al.  Spatial variability of liquid water path in marine low cloud : The importance of mesoscale cellular convection , 2006 .

[23]  Chialin Wu,et al.  Cloud profiling radar for the CloudSat mission , 2005, IEEE International Radar Conference, 2005..

[24]  Bruce A. Wielicki,et al.  Statistical Analyses of Satellite Cloud Object Data from CERES. Part I: Methodology and Preliminary Results of the 1998 El Niño/2000 La Niña , 2005 .

[25]  William B. Rossow,et al.  Characterizing Tropical Cirrus Life Cycle, Evolution, and Interaction with Upper-Tropospheric Water Vapor Using Lagrangian Trajectory Analysis of Satellite Observations , 2004 .

[26]  B. Soden,et al.  Diurnal cycle of convection, clouds, and water vapor in the tropical upper troposphere: Satellites versus a general circulation model , 2004 .

[27]  Robert Wood,et al.  Diurnal cycle of liquid water path over the subtropical and tropical oceans , 2002 .

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

[29]  Q. Fu,et al.  Tropical Convection and the Energy Balance at the Top of the Atmosphere , 2001 .

[30]  G. McFarquhar,et al.  Thin and Subvisual Tropopause Tropical Cirrus: Observations and Radiative Impacts , 2000 .

[31]  William B. Rossow,et al.  Radiative Effects of Cloud-Type Variations , 2000 .

[32]  Sundar A. Christopher,et al.  Daytime variation of marine stratocumulus microphysical properties as observed from geostationary satellite , 1999 .

[33]  Mechanisms regulating sea‐surface temperatures and deep convection in the tropics , 1999 .

[34]  D. Winker,et al.  Laminar cirrus observed near the tropical tropopause by LITE , 1998 .

[35]  J. Norris,et al.  Low Cloud Type over the Ocean from Surface Observations. Part I: Relationship to Surface Meteorology and the Vertical Distribution of Temperature and Moisture , 1998 .

[36]  J. Norris.  Low Cloud Type over the Ocean from Surface Observations. Part II: Geographical and Seasonal Variations , 1998 .

[37]  S. Bony,et al.  Sea Surface Temperature and Large-Scale Circulation Influences on Tropical Greenhouse Effect and Cloud Radiative Forcing , 1997 .

[38]  Murry L. Salby,et al.  The Role of Cloud Diurnal Variations in the Time-Mean Energy Budget , 1997 .

[39]  S. Bony,et al.  The Role of Large-Scale Atmospheric Circulation in the Relationship between Tropical Convection and Sea Surface Temperature , 1997 .

[40]  C. Bretherton,et al.  Moisture Transport, Lower-Tropospheric Stability, and Decoupling of Cloud-Topped Boundary Layers , 1997 .

[41]  C. Bretherton,et al.  Numerical Simulations and a Conceptual Model of the Stratocumulus to Trade Cumulus Transition , 1997 .

[42]  S. Klein,et al.  An observational study of diurnal variations of marine stratiform cloud , 1995 .

[43]  P. Zuidema,et al.  Satellite Determination of Stratus Cloud Microphysical Properties , 1995 .

[44]  F. Weng,et al.  Retrieval of cloud liquid water using the special sensor microwave imager (SSM/I) , 1994 .

[45]  J. Norris,et al.  interannual Variability in Stratiform Cloudiness and Sea Surface Temperature , 1994 .

[46]  L. Oreopoulos,et al.  Statistical dependence of albedo and cloud cover on sea surface temperature for two tropical marine stratocumulus regions , 1993 .

[47]  S. Klein,et al.  The Seasonal Cycle of Low Stratiform Clouds , 1993 .

[48]  Duane E. Waliser,et al.  Convective cloud systems and warm-pool sea surface temperatures : coupled interactions and self-regulation , 1993 .

[49]  N. Graham,et al.  Comparison of the Highly Reflective Cloud and Outgoing Longwave Radiation Datasets for Use in Estimating Tropical Deep Convection. , 1993 .

[50]  D. Hartmann,et al.  The Effect of Cloud Type on Earth's Energy Balance: Global Analysis , 1992 .

[51]  V. Ramanathan,et al.  Thermodynamic regulation of ocean warming by cirrus clouds deduced from observations of the 1987 El Niño , 1991, Nature.

[52]  B. Barkstrom,et al.  Seasonal variation of cloud radiative forcing derived from the Earth Radiation Budget Experiment , 1990 .

[53]  A. Betts,et al.  Climatic Equilibrium of the Atmospheric Convective Boundary Layer over a Tropical Ocean , 1989 .

[54]  B. Barkstrom,et al.  Cloud-Radiative Forcing and Climate: Results from the Earth Radiation Budget Experiment , 1989, Science.

[55]  Suhung Shen,et al.  On the Dynamics of Intraseasonal Oscillations and ENSO , 1988 .

[56]  T. Barnett,et al.  Sea Surface Temperature, Surface Wind Divergence, and Convection over Tropical Oceans , 1987, Science.

[57]  R. Lindzen,et al.  On the role of sea surface temperature gradients in forcing low-level winds and convergence in the tropics , 1987 .

[58]  K. Emanuel,et al.  Baroclinic Instability in an Environment of Small Stability to Slantwise Moist Convection. Part I: Two-Dimensional Models , 1987 .

[59]  Patrick Minnis,et al.  Diurnal variability of regional cloud and clear-sky radiative parameters derived from GOES data. Part II : November 1978 cloud distributions. , 1984 .

[60]  Patrick Minnis,et al.  Diurnal Variability of Regional Cloud and Clear-Sky Radiative Parameters Derived from GOES Data. Part I: Analysis Method , 1984 .

[61]  Brian F. Farrell,et al.  A Simple Approximate Result for the Maximum Growth Rate of Baroclinic Instabilities , 1980 .

[62]  R. Newell,et al.  Climate and the Ocean , 1979 .

[63]  Peter H. Stone,et al.  Atmospheric Lapse Rate Regimes and Their Parameterization , 1979 .