Locating Evaporation Duct in the light of Babin Method by using WRF

ISBN-13: 9783659212680 / Angielski / Miękka / 2012 / 64 str.

Muhammad Hasan Ali Baig; Wang Zhenhui; Wang Zhe

Opis

Refractivity happens due to stratification in the lower boundary layer over oceans due to variability of moisture, temperature, wind and sea surface temperature which collectively may lead to generate evaporation duct. The evaporation duct has a significant impact on the spread of electromagnetic waves in the atmosphere over oceans. So it is of great significance to analyze and forecast evaporation duct based on the actual atmospheric and marine environmental data both from the meteorological and military point of view. This ducting sometimes support normal propagation of radar signals and sometimes may cause distortion and attenuation of signals depending on the height of evaporation duct. This leads to over-estimation and under-estimation of rainfall by weather radar. So, to get the exact picture of rainfall from the weather-systems coming from oceans (like tropical cyclones) is highly important in weather forecasting. The aim of this study is to locate evaporation duct so that results may be used in applying correction measures in radar meteorology for better rainfall forecast.

O autorze

Muhammad Hasan Ali Baig is a PhD scholar at Institute of Remote Sensing Applications, Chinese Academy of Sciences.He did his MS in Atmospheric Physics from Nanjing University of Information Sc and Tech while his first Masters degree was in Applied Physics from the University of Karachi. He is currently working on RS of flood disaster management.