Category Archives: Equatorial waves

What are equatorial waves and how are they linked to heavy rainfall in Southeast Asia?

By: Dr. Samantha Ferrett What is an equatorial wave and why do we care about them? Atmospheric equatorial waves are confined to, and move, or propagate, along the equator. Equatorial waves can cause variations in pressure, temperature and winds. Each … Continue reading

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Is it a normal season this year for tropical cyclones in the Western North Pacific?

By Xiangbo Feng  The Western North Pacific (WNP) is the most active area for tropical cyclones (TCs).  The number of TCs occurred in the WNP so far (end of October) this year is 26 – just the average number of … Continue reading

Posted in Atmospheric circulation, Climate, Climate modelling, earth observation, ENSO, Equatorial waves, Historical climatology, Madden-Julian Oscillation (MJO), Numerical modelling, Seasonal forecasting, Tropical cyclones, Waves, Weather forecasting, Western North Pacific, Wind | Leave a comment

How the Hadley Cells work

By Gui-Ying Yang The Hadley Cell, named after British meteorologist George Hadley who discovered this tropical atmospheric overturning circulation, is one of the basic concepts in weather and climate. Figure 1 shows the zonal mean overturning circulation in a latitude height … Continue reading

Posted in Climate, Climate change, Climate modelling, earth observation, Equatorial waves, extratropical cyclones, Tropical convection, Waves, Wind | Tagged , | Leave a comment