Diurnal Precipitation Regimes in the Global Tropics

Abstract Diurnal variations of the global tropical precipitation are documented by using two complementary Tropical Rainfall Measuring Mission (TRMM) datasets (3B42 and 3G68) for 1998–2006 in an attempt to provide a unified view of the diurnal cycle and a metric for evaluating numerical model performance. The 3B42 data have better spatial coverage; the 3G68 data offer more accurate diurnal phase information. The first and second empirical orthogonal function (EOF) modes represent the diurnal cycle and account for 89% of the total variance in 3B42. The third and fourth EOF modes, which account for 10% of the total variance, represent the semidiurnal cycle. Both datasets yield consistent spatial structures and temporal evolution, but they have different advantages: the patterns derived from 3B42 exhibit less noise, while 3G68 yields an arguably more accurate diurnal phase. The diurnal phase derived from 3G68 systematically leads 3B42 by about 3 h. Three tropical diurnal cycle regimes (oceanic, continental, ...

[1]  D. Randall,et al.  Diurnal Variability of the Hydrologic Cycle and Radiative Fluxes: Comparisons between Observations and a GCM , 2000 .

[2]  T. N. Krishnamurti,et al.  The status of the tropical rainfall measuring mission (TRMM) after two years in orbit , 2000 .

[3]  T. Andersson.  The Diurnal Variation of Precipitation Frequency over Weather Ship M , 1970 .

[4]  Brian E. Mapes,et al.  Diurnal Patterns of Rainfall in Northwestern South America. Part III: Diurnal Gravity Waves and Nocturnal Convection Offshore , 2003 .

[5]  John M. Wallace,et al.  The Diurnal March of Convective Cloudiness over the Americas , 1997 .

[6]  Long S. Chiu,et al.  Diurnal Cycle of Oceanic Precipitation from SSM/I Data , 1995 .

[7]  Y. Hong,et al.  The TRMM Multisatellite Precipitation Analysis (TMPA): Quasi-Global, Multiyear, Combined-Sensor Precipitation Estimates at Fine Scales , 2007 .

[8]  Kuolin Hsu,et al.  Diurnal Variability of Tropical Rainfall Retrieved from Combined GOES and TRMM Satellite Information , 2002 .

[9]  K. Trenberth,et al.  The Diurnal Cycle and Its Depiction in the Community Climate System Model , 2004 .

[10]  J. Augustine.  The Diurnal Variation of Large-Scale Inferred Rainfall over the Tropical Pacific Ocean during August 1979 , 1984 .

[11]  J. Slingo,et al.  The Diurnal Cycle in the Tropics , 2001 .

[12]  John M. Wallace,et al.  Diurnal Variations in Precipitation and Thunderstorm Frequency over the Conterminous United States , 1975 .

[13]  B. Haurwitz,et al.  The diurnal and semidiurnal barometric oscillations global distribution and annual variation , 1973 .

[14]  Kenneth P. Bowman,et al.  Diurnal cycle of tropical precipitation in Tropical Rainfall Measuring Mission (TRMM) satellite and ocean buoy rain gauge data , 2005 .

[15]  S. Klein,et al.  Role of eastward propagating convection systems in the diurnal cycle and seasonal mean of summertime rainfall over the U.S. Great Plains , 2006 .

[16]  H. Hendon,et al.  The diurnal cycle of tropical convection , 1993 .

[17]  J. Janowiak,et al.  An Examination of the Diurnal Cycle in Oceanic Tropical Rainfall Using Satellite and In Situ Data , 1994 .

[18]  B. N. Meisner,et al.  The Relationship between Large-Scale Convective Rainfall and Cold Cloud over the Western Hemisphere during 1982-84 , 1987 .

[19]  G. Holland,et al.  Numerical Simulation of the Diurnal Evolution of Tropical Island Convection over the Maritime Continent , 2001 .

[20]  Klaus M. Weickmann,et al.  30–60 Day Atmospheric Oscillations: Composite Life Cycles of Convection and Circulation Anomalies , 1987 .

[21]  R. J. Reed,et al.  A Diagnostic Study of the Diurnal Rainfall Variation in the GATE B-Scale Area , 1981 .

[22]  R. J. Reed,et al.  The Diurnal Variation of Deep Convection and Inferred Precipitation in the Central Tropical Pacific During January–February 1979 , 1985 .

[23]  W. M. Gray,et al.  Diurnal Variation of Deep Cumulus Convection , 1977 .

[24]  E. B. Kraus,et al.  The Diurnal Precipitation Change over the Sea , 1963 .

[25]  K. Lau,et al.  Diurnal Variations in Tropical Oceanic Cumulus Convection during TOGA COARE , 1997 .

[26]  J. Neumann.  LAND BREEZES AND NOCTURNAL THUNDERSTORMS , 1951 .

[27]  R. J. Reed,et al.  Diurnal Variations in Convective Activity and Precipitation During Phases II and III of GATE , 1978 .

[28]  Hiroyuki Hashiguchi,et al.  Diurnal Land-Sea Rainfall Peak Migration over Sumatera Island, Indonesian Maritime Continent, Observed by TRMM Satellite and Intensive Rawinsonde Soundings , 2003 .

[29]  K. Hamilton.  A note on the observed diurnal and semidiurnal rainfall variations , 1981 .

[30]  Carlos A. Nobre,et al.  Environmental Conditions Associated with Amazonian Squall Lines: A Case Study , 1995 .

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

[32]  Yukari N. Takayabu,et al.  Spectral representation of rain profiles and diurnal variations observed with TRMM PR over the equatorial area , 2002 .

[33]  Harshvardhan,et al.  Diurnal Variability of the Hydrologic Cycle in a General Circulation Model , 1991 .

[34]  T. Ohsawa,et al.  Diurnal Variations of Convective Activity and Rainfall in Tropical Asia , 2001 .

[35]  Frank D. Marks,et al.  Winter Monsoon Convection in the Vicinity of North Borneo. Part I: Structure and Time Variation of the Clouds and Precipitation , 1981 .

[36]  Robert F. Adler,et al.  On the Tropical Rainfall Measuring Mission (TRMM) , 1996 .

[37]  E. Zipser,et al.  The Diurnal Cycle of Rainfall and Convective Intensity according to Three Years of TRMM Measurements , 2003 .

[38]  Thomas L. Bell,et al.  Sampling of the Diurnal Cycle of Precipitation Using TRMM , 2002 .

[39]  Robert F. Cahalan,et al.  Sampling Errors in the Estimation of Empirical Orthogonal Functions , 1982 .

[40]  A. Betts,et al.  Convection in GATE , 1981 .

[41]  V. Kousky.  Diurnal Rainfall Variation in Northeast Brazil , 1980 .

[42]  G. Louis Smith,et al.  The diurnal cycle of outgoing longwave radiation from Earth Radiation Budget Experiment measurements , 2003 .

[43]  Ken Tanaka,et al.  Analysis of Global Cloud Imagery from Multiple Satellites , 1991 .

[44]  T. Satomura.  Diurnal variation of precipitation over the Indo-China Peninsula , 2000 .

[45]  N. Lau,et al.  Diurnal cycle of summertime deep convection over North America: A satellite perspective , 2005 .

[46]  A. W. Cook.  THE DIURNAL VARIATION OF SUMMER RAINFALL AT DENVER , 1939 .

[47]  Paquita Zuidema,et al.  Convective Clouds over the Bay of Bengal , 2003 .

[48]  J. Wallace,et al.  The Arctic oscillation signature in the wintertime geopotential height and temperature fields , 1998 .

[49]  H. Kubota,et al.  Diurnal Variations of Tropical Convection Observed during the TOGA-COARE , 2001 .

[50]  R. J. Reed,et al.  Diurnal Variation of Summer Convection Over West Africa and the Tropical Eastern Atlantic During 1974 and 1978 , 1981 .