The current spell of heavy rainfall and resulting floods is being blamed on a phenomenon called La Niña. It involves both the ocean and atmosphere.
La Niña occurs when surface temperatures get cooler than normal (by 3 to 5 degrees Centigrade) in the western Pacific Ocean. During a La Niña, the cold water that pools near the coast of South America surges westwards across the mighty Pacific, the largest ocean in the world. This flow causes a greater build up of warmer water along the eastern coast of Australia and in the South East Asia region. The contrast in sea surface temperatures across the Pacific, as well as the contrast in air pressure, produces more rainfall.
La Niña is the Spanish term for “the girl child”. In that literal sense, the current weather extremes might be called the fury of a very formidable young lady! And it’s not the first time she has unleashed such havoc on us. This week in my quiz column, I started off with some questions on freaky weather, and then moved on to other topics.
Other ladies figure in the quiz: from Nobel Prize winning Marie Curie to Harry Potter creator J K Rowling. And we ask about the lady school teacher who died in the Challenger space shuttle disaster in February 1986.