Other
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3603817l&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 3, CiteID L03817
Other
9
Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504), Atmospheric Processes: Remote Sensing, Oceanography: Physical: Upper Ocean And Mixed Layer Processes
Scientific paper
On 2 May 2008, category-4 tropical cyclone Nargis devastated Myanmar. It was observed that just prior to its landfall, Nargis rapidly intensified from a weak category-1 storm to an intense category-4 storm within only 24 h. Using in situ ocean depth-temperature measurements and satellite altimetry, it is found that Nargis' rapid intensification took place on a pre-existing warm ocean anomaly in the Bay of Bengal. In the anomaly, the subsurface ocean is evidently warmer than climatology, as characterized by the depth of the 26°C isotherm of 73-101 m and the tropical cyclone heat potential of 77-105 kj cm-2. This pre-existing deep, warm subsurface layer leads to reduction in the cyclone-induced ocean cooling, as shown from the ocean mixed layer numerical experiments. As a result, there was a near 300% increase in the air-sea enthalpy flux to support Nargis' rapid intensification.
Chen Chi-Hong
Lin I.-I.
Liu Timothy W.
Pun Iam-Fei
Wu Chun-Chieh
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