Climatology of precipitation and clouds over W_PACIFIC_ITCZ

General info
System properties
Seasonal variation
Diurnal variation
Vertical Structure
Extreme events
  • Precipitation diurnal variation

  • Many studies suggested that the diurnal variation of the precipitation is related to the life cycles of the precipitation systems, which is frequently driven by the surface sensible heating. Over W_PACIFIC_ITCZ, mean annual precipitation are estimated with 1787.4 (mm/year) from precipitation radar. Detailed diurnal variation of the precipitation at high resolution can be accessed here (NOTE: it may take long time to generate for a large area). The diurnal variation of precipitation from systems with different sizes and heights are shown below:

    In total, thunderstorms (systems with detected lightning flashes) contribute 9 %, MCSs (Mesoscale convective systems with raining area > 2000 km^2) contribute 74 % of all precipitation over W_PACIFIC_ITCZ. Diurnal variations of fraction of precipitation from thunderstorms and MCSs over W_PACIFIC_ITCZ are shown below:

  • Cloud day vs. night differences

  • Certainly there is a strong diurnal variation of different types of clouds. Because CloudSat observes at 0130 and 1330 local time, here the daytime and night cloud fraction in different seasons are presented:

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