Tropical Mesoscale and Local Circulations

Tropical Mesoscale and Local Circulations

This interactive module is part of an online university-level tropical synoptic meteorology course, which helps international meteorologists meet basic instructional requirements. In the module, we discuss:

  • Mesoscale, thermally-forced circulations (i.e. land-sea breeze and mountain-valley breeze), including
    • How they are formed and their diurnal cycle
    • Factors that modify thermally forced circulations
    • The weather associated with thermally forced circulations, particularly convection and other significant weather
  • Interactions of mesoscale, thermally forced circulations with other atmospheric phenomena, including
    • Intersection of mesoscale circulations and of mesoscale circulations with convective outflow boundaries
    • Thermally forced circulation interactions with monsoonal and trade wind flows
  • The impact of thermally forced and interacting circulations at various scales on the diurnal cycle of precipitation in the tropics, and
  • A case example from the Lake Victoria basin, showing complex thermally forced circulations, outflow boundaries, and synoptic scale flow.