Open AccessInfluence of tropical cyclone ‘ AILA ’ on atmospheric surface layer turbulence and fluxes at Ranchi during its landfall
Author(s) -
Murthy B. S.,
Latha R.,
Kumar Manoj
Publication year - 2013
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl2.474
Subject(s) - landfall , tropical cyclone , climatology , atmospheric sciences , dominance (genetics) , environmental science , turbulence , storm , meteorology , geology , physics , biochemistry , chemistry , gene
Surface layer turbulent fluxes and normalized wind spectra at Ranchi, India during the landfall of severe cyclonic storm ‘ AILA ’ are compared with the fair weather spectra. Spectral peaks are shifted to lower frequencies as AILA crosses the coast. Dominant eddy sizes after the landfall are observed to be much higher than those before the landfall especially for u component. Spectral energy during the passage of synoptic disturbance in the vicinity is lesser than that of Kaimal's spectrum owing to mismatch of empirical constant over tropics. Mean vertical velocity is positive (negative) before (after) the landfall, indicating dominance of updrafts (downdrafts) .