Rainfall and its variability are not only important constituents of the
global hydrological cycle, but also influence the course of development of all
living organisms on our planet. Particularly over tropical regions, given the
socioeconomic condition of many countries, people critically depend on the
annual precipitation and its variability. Rainfall diurnal cycle is
fundamental to many regional climates.Because of the limited observations
and it is result from complex interactions between dynamic and radiative
forcings, what is the diurnal cycle of tropical rainfall and how does it vary
in space are still remaining challenge on a non-sun-synchronous orbit,
Tropical Rainfall Measuring Mission (TRMM) has made it possible to monitor
tropical rainfall diurnal patterns and their intensities.
Numerous scientists have studied the diurnal variation of rainfall over the
tropical land and ocean using TRMM satellite measurements. In this page, we
exhibit examples of the TRMM application on rainfall diurnal cycle and provide
a reference list for TRMM rainfall diurnal cycle related publications.
TRMM Diurnal Cycle of Precipitation
(Dec. 1997 - Dec. 2001)
L. Chiu and A. Chang
Diurnal cycle of precipitation over the global tropics derived from the TRMM
Combined Instrument algorithm (2B31).The pixel data are binned into
geographic local time 3 hourly 1x1 degree boxes.There is a nocturnal to
early morning maximum over the oceanic rain belts.Rainfall maximum over the
continents occurs in early afternoon.The drastic shift of the maximum
rainfall over the Maritime Continent from early morning in the coast to late
afternoon in land suggests a strong coupling in land-air-sea interactions.
Sorooshian, S., Gao,
X., Hsu, K., Maddox, R. A., Hong, Y., Gupta, H. V., Imam, B. 2002: Diurnal
Variability of Tropical Rainfall Retrieved from Combined GOES and TRMM
Satellite Information. Journal of Climate: Vol. 15, No. 9, pp.
Negri, Andrew J., Bell, Thomas L., Xu, Liming. 2002: Sampling
of the Diurnal Cycle of Precipitation Using TRMM. Journal of Atmospheric
and Oceanic Technology: Vol. 19, No. 9, pp. 1333-1344.
Imaoka, Keiji, Spencer, Roy W. 2000: Diurnal Variation of
Precipitation over the Tropical Oceans Observed by TRMM/TMI Combined with
SSM/I. Journal of Climate: Vol. 13, No. 23, pp.
Kishtawal, C. M., Krishnamurti, T. N.. 2001: Diurnal Variation
of Summer Rainfall over Taiwan and Its Detection Using TRMM Observations. Journal
of Applied Meteorology: Vol. 40, No. 3, pp. 331-344.
Nesbitt, Stephen W., Zipser, Edward J. 2003: The Diurnal Cycle of
Rainfall and Convective Intensity according to Three Years of TRMM
Measurements. Journal of Climate: Vol. 16, No. 10, pp.
L. A. T. Machado, H. Laurent, A. A. Lima, Diurnal march of the
convection observed during TRMM-WETAMC/LBA, Journal of Geophysical
Research, VOL. 107, NO. D20, 8064, doi:10.1029/2001JD000338, 2002
Y. N. Takayabu, Spectral representation of rain profiles and
diurnal variations observed with TRMM PR over the equatorial area,
Geophysical Research Letters, VOL. 29, NO. 12, 10.1029-2001GL014113,