News tagged with el nino
In hot water: World sets ocean temperature record (Update)
(AP) -- Steve Kramer spent an hour and a half swimming in the ocean this week - in Maine.
Aug 20, 2009 |
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NASA Research Finds Last Decade was Warmest on Record, 2009 One of Warmest Years
(PhysOrg.com) -- A new analysis of global surface temperatures by NASA scientists finds the past year was tied for the second warmest since 1880. In the Southern Hemisphere, 2009 was the warmest year on record.
Jan 21, 2010 |
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Climate change may alter natural climate cycles of Pacific
While it's still hotly debated among scientists whether climate change causes a shift from the traditional form of El Nino to one known as El Nino Modoki, online in the journal Nature Geoscience, scientists now say that E ...
Space & Earth / Earth Sciences
Oct 17, 2010 |
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Past regional cold and warm periods linked to natural climate drivers
Intervals of regional warmth and cold in the past are linked to the El Niño phenomenon and the so-called "North Atlantic Oscillation" in the Northern hemisphere's jet stream, according to a team of climate scientists. These ...
Space & Earth / Earth Sciences
Nov 26, 2009 |
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Harbingers of increased Atlantic hurricane activity identified
Reconstructions of past hurricane activity in the Atlantic Ocean indicate that the most active hurricane period in the past was during the "Medieval Climate Anomaly" about a thousand years ago when climate ...
Space & Earth / Earth Sciences
Aug 12, 2009 |
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Climate phenomenon La Nina to blame for global extreme weather events
(PhysOrg.com) -- Recent extreme weather events as far as Australia and Africa are being fueled by a climate phenomenon known as La Nina -- or "the girl" in Spanish. La Nina has also played a minor role in ...
Space & Earth / Earth Sciences
Feb 07, 2011 |
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Ocean cooling contributed to mid-20th century global warming hiatus
The hiatus of global warming in the Northern Hemisphere during the mid-20th century may have been due to an abrupt cooling event centered over the North Atlantic around 1970, rather than the cooling effects ...
Space & Earth / Earth Sciences
Sep 22, 2010 |
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Tree rings open door on 1100 years of El Nino
(PhysOrg.com) -- El Nino and La Nina, the periodic shifts in Pacific Ocean temperatures, affect weather around the globe, and many scientists have speculated that a warming planet will make those fluctuations ...
Space & Earth / Earth Sciences
May 27, 2011 |
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Adios El Nino, Hello La Nina?
(PhysOrg.com) -- The moderate El Nino of the past year has officially bowed out, leaving his cool sister, La Nina, poised to potentially take the equatorial stage.
Space & Earth / Earth Sciences
Jun 22, 2010 |
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2010 hurricane season may be worst on record: officials
The 2010 Atlantic hurricane season may be one of the worst on record, US officials warned Thursday, amid fears it could deepen an oil crisis in the Gulf of Mexico and bring new misery to Haiti.
Space & Earth / Earth Sciences
May 27, 2010 |
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El Nino's Last Hurrah?
(PhysOrg.com) -- El Niño 2009-2010 just keeps hanging in there.
Space & Earth / Earth Sciences
Mar 19, 2010 |
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La Nina likely to develop in coming months: UN weather body
The UN weather agency said Tuesday that El Nino, which wreaks havoc around the Pacific and east Africa, has dissipated, but La Nina -- another disruptive weather phenomenon, is likely to develop.
Space & Earth / Earth Sciences
Jul 06, 2010 |
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Global warming may dent El Nino's protective shield from Atlantic hurricanes, increase droughts
(PhysOrg.com) -- El Niño, the periodic eastern Pacific phenomenon credited with shielding the United States and Caribbean from severe hurricane seasons, may be overshadowed by its brother in the central Pacific ...
Space & Earth / Earth Sciences
Sep 23, 2009 |
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'El Nino' arrives in Pacific for a months-long stay
US scientists on Thursday said that the El Nino warming trend of the Pacific Ocean waters has returned, bringing with it almost certain changes in weather patterns around the world.
Space & Earth / Earth Sciences
Jul 09, 2009 |
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Global warming's influence on El Nino still unknown
(PhysOrg.com) -- The climate of the Pacific region will undergo significant changes as atmospheric temperatures rise but scientists can not yet identify the influence it will have on the El Nino-Southern Oscillation ...
Space & Earth / Earth Sciences
May 24, 2010 |
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El Niño-Southern Oscillation
El Niño-Southern Oscillation (abbrieviated as ENSO and commonly called simply El Niño), is an intensification of monthly or seasonal fluctuations in the air pressure difference between Tahiti and Darwin, Australia caused by warming of surface waters of the tropical Eastern Pacific Ocean that occurs every three to eight years. The name is from the Spanish for "the little boy", refers to the Christ child, because the phenomenon is usually noticed around Christmas in the Pacific near South America. A period of cooling in the tropical Pacific is the opposite extreme in the natural ENSO cycle and is called La Niña.
The mechanisms that sustain the El Niño - La Nina cycle remain a matter of research, but El Nino is associated with disruption of Pacific trade winds and a stronger than usual so-called Madden-Julian oscillation, which is the frequent and regularly occurring eastward progression of tropical rainfall over the Pacific.
El Niño is associated with floods, droughts and is linked to other weather disturbances in many locations around the world. El Niño's effects in the Atlantic Ocean lag behind those in the Pacific by 12 to 18 months. Developing countries dependent upon agricultural and fishing are especially affected. But El Niño's effects on weather vary with each event, and ENSO's intensity or frequency may change as a result of global warming. Research suggests that treating ocean warming which occurs in the eastern tropical Pacific separately from that of the central tropical Pacific may help explain some of these variations.
For more information about El Niño-Southern Oscillation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
