July 9, 2009 -- El Nino is back. Government scientists said Thursday that the periodic warming of water in the tropical Pacific Ocean, which can affect weather around the world, has returned. The Pacific had been in what is called a neutral state, but forecasters at the National Oceanic and Atmospheric Administration say the sea surface temperature climbed to 1.8 degrees Fahrenheit above normal along a narrow band in the eastern equatorial Pacific in June. In addition, NOAA's Climate Prediction Center said temperatures in other tropical regions are also above normal, with warmer than usual readings as much as 975 feet below the ocean surface. In general, El Nino conditions are associated with increased rainfall across the east-central and eastern Pacific and with drier than normal conditions over northern Australia, Indonesia and the Philippines. A summer El Nino can lead to wetter than normal conditions in the intermountain regions of the United States and over central Chile. In an El Nino year there tend to be more Eastern Pacific hurricanes and fewer Atlantic hurricanes. Related Content:
The forecasters said they expect this El Nino to continue strengthening over the next few months and to last through the winter of 2009-2010. "Advanced climate science allows us to alert industries, governments and emergency managers about the weather conditions El Nino may bring so these can be factored into decision-making and ultimately protect life, property and the economy," NOAA Administrator Jane Lubchenco said in a statement. NOAA officials noted that not all El Nino effects are negative. For example, it can suppress Atlantic hurricanes and bring needed moisture to the arid Southwest . But it can also steer damaging winter storms to California and increase storminess across the southern United States. Get More NewsSpiders, Scorpions Among World's Oldest CreaturesMany creepy crawlies have been on Earth much longer than previously believed.Blood-Sucking Vampire Bats Sing DuetsWhite-winged vampire bats "harmonize" with separated roost mates.Oldest Hebrew Writing Possibly FoundAncient inscriptions on a 3,000-year-old pottery shard could make history.Rare, Prehistoric-Age Reptile Found in N.Z.A tuatara has been spotted on the New Zealand mainland for the first time in 200 years.Iceman Has No Living RelativesOetzi, the 5,300 year-old frozen mummy, left no living genetic legacy.SLIDE SHOW: Landscapes of TerrorWhat makes a place feel scary? There are scientific explanations.It's Official: People Are Warming the PolesHumans are conclusively to blame for polar warming, say scientists.Eight-Armed Animal Preceded DinosaursWhat may be one of Earth's first animals was no bigger than a coaster and had eight arms.Phoenicians Live on in People's GenesOne in 17 Mediterranean men may be descended from ancient Phoenicians.Pesticides, Fertilizers Linked to Frog DeclineA pesticide is found to promote parasites among amphibians.Hubble Telescope Taking Photos AgainThe Hubble Space Telescope is once again snapping stunning photos of the universe.Andean Mummy Hairs Show Hallucinogen UseScientists find direct evidence of hallucinogenic drug use among ancient Andeans.Opals on Mars Reveal Planet's Long Wet PastOpals found on Mars suggest the planet has been wet for much longer. |
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