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Frances, Ivan Contribute To Hurricane Studies

Date:
September 15, 2004
Source:
NASA/Jet Propulsion Laboratory
Summary:
Seen through the eyes of the Multi-angle Imaging SpectroRadiometer aboard NASA's Terra satellite, the menacing clouds of Hurricanes Frances and Ivan provide a wealth of information that can help improve hurricane forecasts.

NASA's Multi-angle Imaging SpectroRadiometer captured these images and cloud-top height retrievals of Hurricane Frances on September 4, 2004, and Hurricane Ivan on September 5th.
Credit: Image courtesy of NASA/Jet Propulsion Laboratory

Seen through the eyes of the Multi-angle Imaging SpectroRadiometer aboard NASA's Terra satellite, the menacing clouds of Hurricanes Frances and Ivan provide a wealth of information that can help improve hurricane forecasts.

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The ability of forecasters to predict the intensity and amount of rainfall associated with hurricanes still requires improvement, particularly on the 24- to 48-hour timescales vital for disaster planning. Scientists need to better understand the complex interactions that lead to hurricane intensification and dissipation, and the various physical processes that affect hurricane intensity and rainfall distributions. Because uncertainties in representing hurricane cloud processes still exist, it is vital that model findings be evaluated against actual hurricane observations whenever possible. Two-dimensional maps of cloud heights such as those provided by the Multi-angle Imaging SpectroRadiometer offer an unprecedented opportunity for comparing simulated cloud fields against actual hurricane observations.

The newly released images of Hurricanes Frances and Ivan were acquired Sept. 4 and Sept. 5, 2004, respectively, when Frances' eye sat just off the coast of eastern Florida and Ivan was heading toward the central and western Caribbean. They are available at: http://photojournal.jpl.nasa.gov/catalog/PIA04367.

The left-hand panel in each image pair is a natural-color view from the instrument's nadir camera. The right-hand panels are computer-generated cloud-top height retrievals produced by comparing the features of images acquired at different view angles. When these images were acquired, clouds within Frances and Ivan had attained altitudes of 15 and 16 kilometers (9.3 and 9.9 miles) above sea level, respectively.

The instrument is one of several Earth-observing experiments aboard Terra, launched in December 1999. The instrument acquires images of Earth at nine angles simultaneously, using nine separate cameras pointed forward, downward and backward along its flight path. It observes the daylit Earth continuously and every 9 days views the entire globe between 82 degrees north and 82 degrees south latitude. It was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif. JPL is a division of the California Institute of Technology in Pasadena.

More information about the Multi-angle Imaging SpectroRadiometer is available at: http://www-misr.jpl.nasa.gov/.


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "Frances, Ivan Contribute To Hurricane Studies." ScienceDaily. ScienceDaily, 15 September 2004. <www.sciencedaily.com/releases/2004/09/040915104838.htm>.
NASA/Jet Propulsion Laboratory. (2004, September 15). Frances, Ivan Contribute To Hurricane Studies. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2004/09/040915104838.htm
NASA/Jet Propulsion Laboratory. "Frances, Ivan Contribute To Hurricane Studies." ScienceDaily. www.sciencedaily.com/releases/2004/09/040915104838.htm (accessed December 21, 2014).

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