• Title/Summary/Keyword: Surface-applied

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Comparison of Land Surface Temperatures from Near-surface Measurement and Satellite-based Product

  • Ryu, Jae-Hyun;Jeong, Hoejeong;Choi, Seonwoong;Lee, Yang-Won;Cho, Jaeil
    • Korean Journal of Remote Sensing
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    • v.35 no.4
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    • pp.609-616
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    • 2019

  • Land surface temperature ($T_s$) is a critical variable for understanding the surface energy exchange between land and atmosphere. Using the data measured from micrometeorological flux towers, three types of $T_s$, obtained using a thermal-infrared radiometer (IRT), a net radiometer, and an equation for sensible heat flux, were compared. The $T_s$ estimated using the net radiometer was highly correlated with the $T_s$ obtained from the IRT. Both values acceptably fit the $T_s$ from the Terra/MODIS (Moderate Resolution Imaging Spectroradiometer)satellite. These results will enhance the measurement of land surface temperatures at various scales. Further, they are useful for understanding land surface energy partitioning to evaluate and develop land surface models and algorithms for satellite remote sensing products associated with surface thermal conditions.

  • https://doi.org/10.7780/kjrs.2019.35.4.9 인용 PDF KSCI HTML

A Study on the Characteristics and Surface Modification of the Zeocarbon for Water Treatment

  • Kim, Seo-A;Hong, Ji-Sook;Suh, Jeong-Kwon;Lee, Jung-Min
    • Carbon letters
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    • v.6 no.3
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    • pp.166-172
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    • 2005

  • The objective of this study was to investigate the possibility of application for water treatment using the zeocarbon. The zeocarbon was mixture of zeolite and activated carbon. In general, the application of commercial zeocarbon to water treatment is difficult because of weak strength in water and the high pH value of effluents after water treatment. Therefore, we have modified the surface of zeocarbon. For the surface modification, we used the acid treatment to make surface functional group. As a result of modification, was created functional group on zeocarbon surface and was formed mesopore in zeocarbon. The surface modified zeocarbon was applied to removal of nitrogen. In removal experiments of nitrogen, removal efficiency was very high. And, strength of zeocarbon after water treatment and pH of effluents were stabilized. This indicates that the surface modified zeocarbon was easy to recover and reuse. Consequently, our results were shown the possibility of application for water treatment using the surface modified zeocarbon.

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