El Nino and the Southern Oscillation

El Nino and the Southern Oscillation Normally, the coastal water off Peru and the equatorial regions of South America are rich in seafood, especially in anchovies. But, once every few years, a warm current appears off the coast, which reduces, dramatically, the yield...

Walker and Hadley Cells

Walker and Hadley Cells The principal monsoons of the world are the summer and winter monsoons of Asia and the monsoonal circulations over West and East Africa. These monsoons appear to be dominated by circulations that are either aligned in a north south or an...

Formation of Heat Low

Formation of Heat Low As the sun moves northwards across the equator in the northern hemisphere, the continents surrounding the Arabian Sea begin to receive large amounts of heat; not only in the form of radiation from the sun but also as heat emitted from the...