It has choked Singapore with smoke, triggered Pacific typhoons and left Vietnamese coffee growers staring nervously at dwindling reser...
It has choked Singapore with smoke, triggered Pacific typhoons and left Vietnamese coffee growers staring nervously at dwindling reservoirs. In Africa, cocoa farmers are blaming it for bad harvests, and in the Americas, it has Argentines bracing for lower milk production and Californians believing that rain is finally, mercifully on the way.
El Nino is back and in a big way.
Its effects are just beginning in much of the world -- for the most part, it hasn't really reached North America -- and yet it's already shaping up potentially as one of the three strongest El Nino patterns since record-keeping began in 1950. It will dominate weather's many twists and turns through the end of this year and well into next. And it's causing gyrations in everything from the price of Colombian coffee to the fate of cold-water fish.
Expect "major disruptions, widespread droughts and floods," Kevin Trenberth, distinguished senior scientist at the National Center for Atmospheric Research in Boulder, Colorado. In principle, with advance warning, El Nino can be managed and prepared for, "but without that knowledge, all kinds of mayhem will let loose."
The last time there was an El Nino of similar magnitude to the current one, the record-setting event of 1997-1998, floods, fires, droughts and other calamities killed at least 30,000 people and caused $100 billion in damage, Trenberth estimates. Another powerful El Nino, in 1918-19, sank India into a brutal drought and probably contributed to the global flu pandemic, according to a study by the Climate Program Office of the National Oceanic and Atmospheric Administration.
As the Peruvian fishermen recognized in the 1600s, El Nino events tend to peak as summer comes to the Southern Hemisphere. The impact can be broken down into several categories. Coastal regions from Alaska to the Pacific Northwest in the U.S., as well as Japan, Korea and China may all have warmer winters. The southern U.S., parts of east Africa and western South America can get more rain, while drier conditions prevail across much of the western Pacific and parts of Brazil.
During the first full week of October, temperatures across a portion of the central Pacific most watched by researchers reached 2.4 Celsius (4.3 Fahrenheit) above normal, the U.S. Climate Prediction Center said. The threshold at which the Australian Bureau of Meteorology considers an El Nino under way is 0.8 degree Celsius, said Andrew Watkins, supervisor of Climate Prediction Services for the agency.
