A visible image for 21 May 1973 obtained from the DMSP satellite suggests the occurrence of internal waves refracting around the Pratas Islands in the South China Sea. Arguments are presented suggesting that the waves are tidally forced along the density interface prevalent for that area during the spring season.
This paper describes unique environmental phenomena observed during LEADEX (Leads Experiment), a multidisciplinary investigation staged from an ice camp in the Beaufort Sea during March and April 1992. The paper focuses on phenomena observed by NOAA, DMSP, and the European ERS-1 satellites. The opening and closing of a lead is studied using the synthetic aperture radar (SAR) data aboardEftS-1. With a mesoscale model, the authors examine the three-dimensional nature of meteorological phenomena and their effect on the opening and closing of leads and show that this model is extremely useful for interpreting structures evident in satellite and in situ observations along northern Alaska. Storms or wind events, which result in leads and fractured ice, also cause ice floes to rotate; the authors document this rotation with automated weather stations anchored to the floes. Finally, the authors describe unique thermal streaks that appeared over a large area of the Beaufort Sea during strong northeasterly winds and explore their nature using multichannel satellite data.
UNCLASSIFIED 1««. OECLASSIFICATION DOWNGRADING SCHEDULE 16 DISTRIBUTION STATEMENT (of thlt Rtport) Approved for public release; distribution unlimited. 17. DISTRIBUTION STATEMENT (ol th» »bttrmct »nfnd In Block 30. II dltttrttl front Rmport) 18. SUPPLEMENTARY NOTES 19. KEY WORDS (Contlnu» on rtvrt* «Id* II n*c»»»»ry and Idmntlly by block numbtr) Tropical meteorology Satellite meteorology Tropical cyclone movement Tropical cyclone forecasting L 20. ABSTRACT (Contlnu» on r*v*r«* »Id» II n»e»»»mry and Identity by Mock numbtr) A method to predict 24-hr movement of tropical eye'lones using consecutive daily satellite views is described. The method is based on the observation that changes in the location of major structural features of the storm are correlated with changes in the direction of movement of storm centers. Major structural features appear to retain the same relative location with respect DD , FORM
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