A study on the characteristics of the marine boundary layer over Indian Ocean with ORV Sagar Kanya cruise # 120 during 1997

Abstract

The CLASS system observations of wind speed, wind direction, temperature and moisture at different pressure levels taken during the pre-INDOEX (Indian Ocean Experiment) cruise # 120 were used for the study. This article presents a study of marine boundary layer (MBL) characteristics, such as turbulent kinetic energy, MBL height, eddy diffusivity, etc. over the Indian Ocean using a multilevel one-dimensional PBL model with one and a half order TKE-ε closure scheme. The model also generates the vertical profiles of zonal wind, meridional wind, potential temperature and specific humidity. The model simulations are compared with the observations and the statistical analysis, viz. correlation coefficient; the RMS error is found to be satisfactory.