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Ann. Geophys., 26, 395-400, 2008 www.ann-geophys.net/26/395/2008/ © European Geosciences Union 2008
Surface buoyancy flux in Bay of Bengal and Arabian Sea
G. Anitha1, M. Ravichandran1, and R. Sayanna2 1Indian National Centre for Ocean Information Services, Hyderabad, India 2Osmania University, Hyderabad, India
Abstract. The seasonal variation of thermal, haline, net surface buoyancy flux, the
Monin-Obukhov length (M-O length, L) and stability parameter, i.e. the ratio
of M-O length to mixed layer depth (h) were studied in the Bay of Bengal (BoB)
and the Arabian Sea (AS) for the years 2003 and 2004 using Argo temperature and
salinity profiles. The relative quantitative influence of winds to surface
buoyancy and the applicability of scaling mixed layer using M-O length in
BoB and AS was brought out. Rotation and light penetration modify the mixed
layer depth from M-O length during shoaling in spring giving L/h<1.
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