PIA03850: Pacific Ocean in Holding Pattern for El Niņo
Target Name: Earth
Is a satellite of: Sol (our sun)
Mission: TOPEX/Poseidon
Spacecraft: TOPEX/Poseidon
Instrument: Altimeter
Product Size: 900 x 900 pixels (width x height)
Produced By: JPL
Addition Date: 2002-07-03
Primary Data Set: TOPEX/Poseidon Science and Data
Full-Res TIFF: PIA03850.tif (1.608 MB)
Full-Res JPEG: PIA03850.jpg (124 kB)

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Original Caption Released with Image:

The Pacific Ocean doesn't show signs of anything that looks like the whopper El Niņo of 1997-1998, according to the latest information from the U.S.-French ocean-observing satellite Topex/Poseidon. The data do show that the mid-equatorial Pacific Ocean has slowly warmed by about 1 degree Celsius (1.8 degrees Fahrenheit) above normal in the past few months. However, the Pacific continues to be dominated by the larger-than-El Niņo /La Niņa pattern called the Pacific Decadal Oscillation, which may discourage El Niņo development.

"Except for some recent mid-Pacific warming, June 2002 looks very much like June 2001," said oceanographer Dr. William Patzert of NASA's Jet Propulsion Laboratory, Pasadena, Calif. "We're still in an E Niņo holding pattern." ( See June 2001 image)

The Topex/Poseidon data were taken during a 10-day collection cycle ending June 14, 2002. They show that there hasn't been any fundamental change in the ocean's large-scale patterns for the past three years. The near-equatorial ocean has been very quiet, although sea levels and sea-surface temperatures are near normal or slightly warmer throughout the far western and central tropical Pacific. Red areas are about 10 centimeters (4 inches) above normal; white areas show the sea-surface height is between 14 and 32 centimeters (6 to 13inches) above normal. This warmth contrasts with the Bering Sea, Gulf of Alaska and U.S. West Coast, where lower-than-normal sea-surface levels (blue areas) and cool ocean temperatures continue. The blue areas are between 5 and 13 centimeters (2 and 5 inches) below normal, and the purple areas range from 14 to 18 centimeters (6to 7 inches) below normal.

Image Credit:
NASA/JPL

Image Addition Date:
2002-07-03