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Cho, Eunsang,Zhang, Aoqi,Choi, Minha Chinese Geoscience Union 2016 TAO Vol.27 No.6
<P>This study focuses on the seasonal differences in soil moisture patterns considering the impact of meteorological variables (air/ground temperature, precipitation, and the amount of insolation) on soil moisture variability over the Korean peninsula between January 2012 and February 2013. We found that soil moisture spatial distributions changed differently with the mean soil moisture content according to the season using statistical metrics (skewness and kurtosis) (summer: 1 June to 31 August, winter: 1 November to 31 January). Daily variations in meteorological variables had different relationships with the changes in soil moisture for two seasons. Air and soil temperature changes clearly had negative relationships with the soil moisture change during the summer period while they had positive relationships during the winter period. Temporal stability testing showed that the representative soil moisture sites on a regional scale could be changed with seasonal periods, especially in the Asian monsoon region. In conclusion, these results provide evidence that there are clear differences in soil moisture patterns according to seasonal characteristics. This study might be useful for further researches relating to climate-meteorological effects on soil moisture patterns on a regional scale.</P>
National human resource development revisited in the Republic of Korea
Eunsang Cho,Gary N. McLean 한국교육개발원 2017 KEDI Journal of Educational Policy Vol.14 No.1
Since 2001, the concept, scope, and policies of National Human Resource Development (NHRD) in the Republic of Korea (South Korea, hereafter, Korea) have been under academic debate and policy experimentation. This article presents an in-depth case study of the evolution of NHRD models, policies, and outcomes in Korea, especially since 1998. Budget, support organizations, outcomes, barriers, and limitations of Korean NHRD were identified and analyzed. Implications provide insights not only for countries that already have NHRD policies, including Korea, but also for countries that may wish to have an NHRD vision and strategies for their national economic and social development
Does AMSR2 produce better soil moisture retrievals than AMSR-E over Australia?
Cho, Eunsang,Su, Chun-Hsu,Ryu, Dongryeol,Kim, Hyunglok,Choi, Minha Elsevier 2017 Remote sensing of environment Vol.188 No.-
<P><B>Abstract</B></P> <P>The Advanced Microwave Scanning Radiometer 2 (AMSR2), a follow-up microwave sensor to the AMSR for Earth Observing System (AMSR-E), was launched on the Global Change Observation Mission 1 – Water (GCOM-W1) satellite in May 2012. It is as yet unclear if instrumental improvements in AMSR2 over AMSR-E have led to better soil moisture (SM) estimates, especially since there is no overlapping period of data between the sensors. This study focuses on comparing the results of AMSR2 and AMSR-E SM over Australia, distinguishing four Köppen climate zones to determine if AMSR2 is better than AMSR-E. This is achieved by selecting two year-long comparative time periods from the operating periods of AMSR-E and AMSR2, based on their statistical similarities in modeled SM as a proxy, using Modern Era Retrospective-analysis for Research and Applications-Land (MERRA-L). The AMSR2 and AMSR-E C- and X-band SM derived from the Land Parameter Retrieval Model (LPRM) was evaluated. Both AMSR2 C- and X-band SM products were found to show similar temporal patterns and spatial agreement with AMSR-E C- and X-band SM, supported by unbiased root mean square difference (ubRMSD) and R-values with MERRA-L SM, respectively. Using lag-based instrumental variable analysis to estimate the random error component of SM retrievals, the noise-to-signal ratios in AMSR2 X-band SM were found to be slightly higher than their AMSR-E counterparts. The improvements in AMSR2, such as the superior radiometric sensitivity and spatial resolution, have therefore not led to statistically significant differences in performance for LPRM retrievals at 1/2°×1/2° grid resolution, when compared with AMSR-E. However, similarities in the metrics for AMSR2 and AMSR-E SM suggest that AMSR2 provides a valuable continuation to AMSR-E.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Revised the manuscript to reflect several specific comments carefully </LI> <LI> Clearly improved in textual and structural things </LI> <LI> Proofread thoroughly by a native English colleague </LI> </UL> </P>