Numerical simulation of sea breeze characteristics observed at tropical coastal site,Kalpakkam |
| |
Authors: | P Jamima J Lakshminarasimhan |
| |
Institution: | 1.Dept.of Applied Mechanics,I.I.T.,Madras;2.Dept.of Applied Mechanics,I.I.T.,Madras |
| |
Abstract: | Sea breeze characteristics around Kalpakkam tropical coastal site are studied using an Advanced Regional Prediction System
(ARPS) mesoscale model, which is non-hydrostatic, compressible atmospheric prediction model following the terrain coordinate
system. Various options such as surface physics, atmospheric radiation physics, Coriolis force, microphysics, cumulus parameterization
and 1.5 level TKE closure scheme for diffusion are included in the model.
A joint meteorological field experiment was carried out by IITM-Pune and IGCAR at Kalpakkam by deploying state-of-the-art
sensors and tether balloon systems for observing the height profiles of meteorological parameters. The data obtained from
the field experiment are used here to compare the results from numerical simulations. From the simulated results, it is seen
that duration of the sea breeze is 6 hours which agrees well with the observations. The height of the Thermal Internal Boundary
Layer (TIBL) is also simulated from the vertical profiles of potential temperature. Simulated wind speed and wind directions
are compared with the 50 m tower data and potential temperature profiles are compared with the kytoon data. Results are in
good agreement with the observed values except during night time wherein a small difference is seen in the wind speed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|