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Contact: Rosemary Sullivant (818) 354-0474

July 7, 2000

HURRICANE CARLOTTA SPINS IN STEREO

With winds reaching 250 kilometers per hour (155 mph), this year's Hurricane Carlotta became the second strongest eastern Pacific June hurricane on record. New images from NASA's Multi-angle Imaging SpectroRadiometer (MISR) show the hurricane on June 21, the day of its peak intensity. The images are available at: http://www-misr.jpl.nasa.gov/gallery/gallery.html

MISR, built and managed by NASA's Jet Propulsion Laboratory in Pasadena, Calif., is one of several Earth-observing instruments aboard NASA's Terra satellite, which was launched in December 1999. This set of images has been oriented so that the spacecraft's flight path is from left to right; north is at the left.

The top image is a color view from MISR's vertical (nadir) camera, showing Carlotta's location in the eastern Pacific Ocean, about 500 kilometers (310 miles) south of Puerto Vallarta, Mexico.

The middle image is a stereoscopic anaglyph created using MISR's nadir camera plus one of its aftward-viewing cameras, and shows a closer view of the area around the hurricane. Viewing with red/blue glasses (red filter over the left eye) is required to obtain a 3-D stereo effect.

Near the center of the storm, the eye is about 25 kilometers (16 miles) in diameter and partially obscured by a thin cloud. About 50 kilometers (31 miles) to the left of the eye, the sharp drop-off from high-level to low-level cloud gives a sense of the vertical extent of the hidden eye wall. The low-level cloud is spiraling counterclockwise into the center of the cyclone. It then rises in the vicinity of the eye wall and emerges with a clockwise rotation at high altitude. Maximum surface winds are found near the eye wall.

The bottom stereo image is a zoomed-in view of convective clouds in the hurricane's spiral arms. The arms are breeding grounds for severe thunderstorms, with associated heavy rain and flooding, frequent lightning, and tornadoes. Thunderstorms rise in dramatic fashion to about the same altitude as the high cloud near the hurricane's center, and are made up of individual cells that are typically less than 20 kilometers (12 miles) in diameter. This image shows a number of these cells, some fairly isolated, and others connected together. Their three-dimensional structure is clearly apparent in this stereo view.

More information about MISR is available at: http://www-misr.jpl.nasa.gov/

MISR scientific data products are available through the Atmospheric Sciences Data Center at NASA's Langley Research Center: http://eosweb.larc.nasa.gov/

The Terra mission is managed by NASA's Goddard Space Flight Center, Greenbelt, Md. JPL is a division of the California Institute of Technology in Pasadena.

This text derived from http://www.jpl.nasa.gov/releases/2000/misrhurricane.html

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