Buoy 자료를 이용한 거문도 주변해역의 대기-해양 열 교환 및 표층수온 변화

Abstract

ABSTRACT

A Study on the Heat Exchange between Atmosphere and Ocean and the SST Change using Buoy Data in the Geomun-Island Circumference

To find out the main features of the heat exchange from the interaction between atmosphere and sea, this thesis covers the meterological property and the heat exchange between the air and the sea in the West-South Sea Area and South-West Sea Area with looking into the weather station of the main areas and the data of the Marine Meterological Observatory located at Geomun-Island and Chilbal-Island. I could evaluate sensible heat flux, latent heat flux by applying the bulk aerodynamic method and the total or net heat flux through the net long-wave radiation and net short wave radiation.

Sensible heat flux shows high levels in winter because of the heat radiated from the sea. This feature is remarkable specially in winter when a velocity of the wind is variable and air temperature differences get up. Latent heat flux indicates the high levels in autumn. That's why the differences of the water vapor pressure ; high and the air stays dry ; the wind gets strong. The reason that a long wavelength at sea level indicates the high value is the sea surface temperature(SST) and the cloud coverage. Therefore, the total or net heat flux is minus sighs in winter because of strong wind and large cloud coverage, high sea level temperature. That means the heat radiates from the sea to the air.

I also tried to discover the phenomenon happening before the heavy rain by using the data about an amount of precipitation lies in Wando Weather Station and applying Bowen's Ratio from the whole 2007-year's buoy in Geomun-Island. According to the thirteen kinds of torrential rain warning in 2007, the cases which were recorded more than 80mm of the rainfall amounts indicated 0.045 in Bowen's ratio, the other cases which were recorded 50~80mm of the rainfall amounts indicated 0.041 in Bowen's ratio. We can find out that the more large an rainfall amount is, the more high Bowen's ratio gets. It was also checked that in case of the steep Bowen's ratio, it shows the very strong heavy rain beyond the standard of the torrential rain warning. In the two kinds, Bowen's ratio variations which were going up steeply were more intense on 1, 9th September than 4th March and then made clear that there were the severe heavy rains.

Through this research paper, I want to show the result of studying the main features in the Sea-Air Heat Exchange around Geomun-Island, Chilbal-Island and the precondition to occur a heavy rain based on the figures of Bowen's ratio. So I expect my research to make help ENSO study and develop Sea-Air Circulation Model.