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http://dx.doi.org/10.5467/JKESS.2013.34.6.561

Comparison of Surface Fluxes Based on Landuse Characteristics Near Gangjeong-Goryeong Weir of the Nakdong River  

Kahng, Keumah (Applied Meteorological Research Division, National Institute of Meteorological Research)
Koo, Hae-Jung (Applied Meteorological Research Division, National Institute of Meteorological Research)
Byon, Jae-Young (Applied Meteorological Research Division, National Institute of Meteorological Research)
Park, Young-San (Asian Dust Research Division, National Institute of Meteorological Research)
Jung, Hyun-Sook (Applied Meteorological Research Division, National Institute of Meteorological Research)
Publication Information
Journal of the Korean earth science society / v.34, no.6, 2013 , pp. 561-574 More about this Journal
Abstract
This study investigates energy fluxes measured near Gangjeong-Goryeong Weir of the Nakdong River of South Korea for more than a year, from July 2011 to September 2012, in order to analyze the applicability of the data for future impact analyses. Each of the two study sites is located in a rural area, surrounded by agricultural fields, and an urban industrial area. Sensible and latent heat fluxes are analyzed according to the wind direction. In the summertime, when the wind blows from the river, sensible heat tends to decrease and latent heat tends to increase at both sites. This result is considered to be caused by moisture transfer from the river. Bowen ratio, energy balance closure, momentum flux, and stability are analyzed as well. The Bowen ratio of the rural agricultural site turns out higher than that of the urban site regardless of the season. The energy balance closure is higher at the agricultural site compared to the urban area, which is mainly due to exclusion of the storage term calculation at the urban site. The momentum flux is greater at the urban site both in winter and summer. The instability lasts longer during daytime and in the summertime, when there is a strong turbulence. The data from these sites are appropriate to be used in analyzing the impact of river in surrounding areas for future studies.
Keywords
Gangjeong-Goryeong Weir; surface energy fluxes; energy balance; turbulence; stability;
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