Observation and numerical simulation of submesoscale motions within sea breeze over a tropical coastal site: A case study

Submesoscale motions observed using SODAR and fast response anemometer data during sea breeze hours are studied. SODAR data indicates the presence of waves with period ~30min during the sea breeze hours. The observations are further verified by spectral analysis of sonic anemometer data using wavele...

Full description

Saved in:
Bibliographic Details
Published in:Atmospheric research 2017-12, Vol.198, p.205-215
Main Authors: Rakesh, P.T., Sandeepan, B.S., Venkatesan, R., Baskaran, R.
Format: Article
Language:English
Subjects:
Horizontal convective rolls
Sonic anemometer
Spectral analysis
Submesoscale
WRF
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Submesoscale motions observed using SODAR and fast response anemometer data during sea breeze hours are studied. SODAR data indicates the presence of waves with period ~30min during the sea breeze hours. The observations are further verified by spectral analysis of sonic anemometer data using wavelet and FFT techniques. The analysis confirms that there are waves with periods of ~30min present throughout the sea breeze hours with varying intensity. The observed waves are simulated using high-resolution WRF-ARW model using the MYJ planetary boundary layer scheme. The conditions of occurrence of such motions are briefly discussed. It is also found that these motions are caused by horizontal convective rolls within the sea breeze layer. •Observational analysis of submesoscale motions within sea breeze.•Simulation with WRF model using MYJ scheme.•FFT and wavelet techniques.•Comparison with SODAR observations.
ISSN:0169-8095
1873-2895
DOI:10.1016/j.atmosres.2017.08.006