• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Impact of freshwater influx on the cyclogenesis, tracks of cyclones and air-sea coupling over the Bay of Bengal

    Thumbnail
    View/Open
    NHACPIC_2008_54.pdf (471.9Kb)
    Date
    2008
    Author
    Murty, V.S.N.
    Sarma, M.S.S.
    Jenson, G.V.
    Vidya, P.J.
    Metadata
    Show full item record
    Abstract
    Over the Bay of Bengal weather disturbances of considerable seasonal variability in their zones of genesis, intensity, frequency and path across the Bay generate during May-November. This variability in the zones of cyclogenesis and paths of weather disturbances are well correlated with the proposed new dynamic parameter – the Effective Oceanic Layer for Cyclogenesis (EOLC) – defined as the geopotential thickness (Delta D) of the near-surface stratified layer formed due to spread of low salinity waters caused by freshwater influx and precipitation. It is found that the zone of higher EOLC, characterized by warmer temperature, lower surface salinity, higher heat potential and higher specific humidity in the surface air, couples with the zone of intense deep-organized convection (lower values of Outgoing Longwave Radiation) in the lower troposphere leading to the cyclogenesis. The surface flow in the stratified layer, decoupled from the thermocline process, appears to guide the movement of weather disturbance into the region of increasing effective heat potential. Thus, the EOLC is a useful parameter, over the sea surface temperature, for better prediction of cyclone tracks, among many other potential applications. The recently acquired upper ocean data from the Bay of Bengal Monsoon Experiment (BOBMEX) in 1999 and in November 2007 are found to be consistent with the above. Some results from these data sets will be presented.
    URI
    http://drs.nio.org/drs/handle/2264/1081
    Collections
    • Scholarly literature [9141]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV