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General Information
    • ISSN: 1793-8236 (Online)
    • Abbreviated Title Int. J. Eng. Technol.
    • Frequency:  Quarterly 
    • DOI: 10.7763/IJET
    • APC: 500 USD
    • Managing Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: Inspec (IET), CNKI Google Scholar, EBSCO, ProQuest, Crossref, Ulrich Periodicals Directory, Chemical Abstracts Services (CAS), etc.
    • E-mail: ijet_Editor@126.com
IJET 2015 Vol.7(3): 219-222 ISSN: 1793-8236
DOI: 10.7763/IJET.2015.V7.795

Validation Study of Active Microwave Soil Moisture Products in Korea and Brazil

Eunsang Cho, Gabriel Alves Vasconcelos, and Minha Choi

Abstract—Soil moisture is a key component of the hydrology meteorology, climatology, and agriculture management in terms of interaction between land surface and atmosphere. Understanding energy and water cycles processes is needed to accurately monitor spatial and temporal variability of soil moisture. In this study, we conducted validation study of active microwave satellite soil moisture data by comparing and evaluating with in-situ soil moisture measured from South Korea and Brazil. The satellite data are derived from the advanced Scatterometer (ASCAT) on board the Metop (VV polarization C-band to 5.255 GHz) satellite, called as Soil Water Index (SWI). We will focus on growing season from May through September in 2012, to avoid any effect on soil moisture data quality due to the severe wintry weather. The comparison results of this validation task were expressed in three statistical values: Correlation coefficient (R), Bias and Root Mean Square Error (RMSE). The results showed that the ASCAT SWI products have reliable agreements with ground measurements in Korea and Brazil.

Index Terms—ASCAT, remotely sensed soil moisture, in situ soil moisture, soil water index.

Eunsang Cho is with Department of Civil and Environmental Engineering, Hanyang University, Seoul 133-791, Republic of Korea (e-mail: eunsangcho@hanyang.ac.kr).
Gabriel Alves Vasconcelos is with the Department of Civil Engineering, University of Brasília, Distrito Federal, Brazil (e-mail: gabriel-alves@hotmail.com).
Minha Choi is with Water Resources and Remote Sensing Laboratory, School of Civil, Architectural, and Environmental Engineering, Sungkyunkwan University,


Cite: Eunsang Cho, Gabriel Alves Vasconcelos, and Minha Choi, "Validation Study of Active Microwave Soil Moisture Products in Korea and Brazil," International Journal of Engineering and Technology vol. 7, no. 3, pp. 219-222, 2015.

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