Media Information

 
 
 
Collection:
NASA Planetary Photo Journal Collection
Title:
Extratropical Cyclone in the Southern Ocean
Original Caption Released with Image:
These images from the Multi-angle Imaging SpectroRadiometer portray an occluded extratropical cyclone situated in the Southern Ocean, about 650 kilometers south of the Eyre Peninsula, South Australia.

Parts of the Yorke Peninsula and a portion of the Murray-Darling River basin are visible between the clouds near the top of the left-hand image, a true-color view from MISR's nadir(vertical-viewi ng) camera. Retrieved cloud-tracked wind velocities are indicated by the superimposed arrows. The image on the right displays cloud-top heights. Areas where cloud heights could not be retrieved are shown in black. Both the wind vectors and the cloud heights were derived using data from multiple MISR cameras within automated computer processing algorithms. The stereoscopic algorithms used to generate these results are still being refined, and future versions of these products may show modest changes.

Extratropical cyclones are the dominant weather system at midlatitudes, and the term is used generically for region allow-pressure systems in the mid- to high-latitudes. In the southern hemisphere, cyclonic rotation is clockwise. These storms obtain their energy from temperature differences between air masses on either side of warm and cold fronts, and their characteristic pattern is of warm and cold fronts radiating out from a migrating low pressure center which forms, deepens, and dissipates as the fronts fold and collapse on each other. The center of this cyclone has started to decay, with the band of cloud to the south most likely representing the main front that was originally connected with the cyclonic circulation.

These views were acquired on October 11, 2001 during Terra orbit 9650, and represent an area of about 380 kilometers x 1900 kilometers.
Image Credit:
NASA/GSFC/LaRC/JPL, MISR Team
Produced By:
JPL
Mission:
Earth Observing System (EOS)
Spacecraft:
Terra
Target Name:
Earth
Is a satellite of:
Sol (our sun)
Instrument:
Multi-angle Imaging SpectroRadiometer (MISR)
Product Size:
1276 samples x 1731 lines
Primary Data Set:
MISR
facet_what:
Sun
facet_what:
Earth
facet_what:
Terra
facet_what:
Earth Observing System
facet_what:
EOS
facet_what:
MISR
facet_what:
Multi-angle Imaging SpectroRadiometer (MISR)
facet_where:
Australia
facet_where:
Jet Propulsion Laboratory (JPL)
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Langley Research Center (LaRC)
facet_when:
October 11, 2001
facet_when_year:
2001
Image #:
PIA03430
UID:
SPD-PHOTJ-PIA03430
orignial url:

Extratropical Cyclone in the Southern Ocean