Open AccessCharacterization of the Vertical Structure of Coastal Atmospheric Boundary Layer over Thumba (, ) during Different Seasons
Author(s) -
Sandhya K. Nair,
T. J. Anurose,
D. Bala Subrahamanyam,
Nishant Kumar,
M. Santosh,
S. Sijikumar,
Mannil Mohan,
K. V. S. Namboodiri
Publication year - 2011
Publication title -
advances in meteorology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 32
eISSN - 1687-9317
pISSN - 1687-9309
DOI - 10.1155/2011/390826
Subject(s) - radiosonde , sea breeze , planetary boundary layer , boundary layer , mixed layer , atmospheric sciences , turbulence , flow (mathematics) , environmental science , climatology , atmospheric instability , meteorology , geology , geography , wind speed , geometry , mechanics , mathematics , physics
Vertical profiles of meteorological parameters obtained from balloon-borne GPS Radiosonde for a period of more than two years are analyzed for characterization of the coastal atmospheric boundary layer (CABL) over Thumba (8.5∘N, 76.9∘E, India). The study reports seasonal variability in the thickness of three different sublayers of the CABL, namely, mixed layer, turbulent flow, and sea breeze flow. Among the three, the vertical thickness of sea breeze flow showed considerable dominance on the other two throughout the year. Mixed layer heights derived through gradients in virtual potential temperature () showed large seasonal variability with a peak in the Summer and Post-Monsoon. On the other hand, the vertical thickness of turbulent flow remained steady all through the year. Results from the present studyindicate that the magnitudes of mixed layer heights are often larger thanthe turbulent flow thickness
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