Browse > Article
http://dx.doi.org/10.17663/JWR.2017.19.1.052

Analysis and Validation of Soil Moisture Data over the Korean Peninsula Simulated by the VIC Model  

Cho, Eunsaem (School of Civil, Environmental and Architectural Engineering, Korea University)
Song, Sung-uk (School of Civil, Environmental and Architectural Engineering, Korea University)
Yoo, Chulsang (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of Wetlands Research / v.19, no.1, 2017 , pp. 52-62 More about this Journal
Abstract
In this study, land surface model was used to simulate the soil moisture of South and North Korea for the past 30 years, and the difference in their variation was analyzed. In addition, satellite observed soil moisture data provided by Soil Moisture CCI was analyzed to evaluate the simulation results of VIC model. For the comparison between the simulated and observed data, the CSEOF analysis was applied to indirectly assess the performance of the VIC model rather than simply comparing soil moisture values. The results of this study are summarized as follows. First, the annual variability of soil moisture showed a similar tendency in both South and North Korea, but it was found that the soil moisture in South Korea was as high as 1%, up to 7%, higher than the soil moisture in North Korea. Secondly, the soil moisture in spring between April to June is similar in South and North Korea, whereas the soil moisture after the rainy season is up to 40% in South Korea, but remains at maximum 32% in North Korea. Third, the overall simulated soil moisture is about 4% smaller than the satellite observed soil moisture, but the degree of increase over the past 30 years is similar to that of satellite observed soil moisture. Finally, a comparison of the CSEOF from the satellite observed soil moisture and the VIC model derived soil moisture showed that the soil moisture from April to June shows a much different pattern from each other. However, in July and October, there was a slight similarity, and it was confirmed that August and September has quite similar patterns.
Keywords
Soil Moisture; Land Surface Model; CSEOF analysis;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Park, KS, Lee, SY, and Park, SY(2009). A Study on the North Korea's Change of Forest Policy since the Economic Crisis in 1990's. The Korean J. of Unification Affairs, 21(1), pp. 459-492.
2 Seo, KH and Kim, KY(2003) Propagation and Initiation Mechanisms of the Madden-Julian Oscillation. J. of Geophysical Research, JGR, 108(D13).
3 Sheffield, J and Wood, EF(2008). Global Trends and Variability in Soil Moisture and Drought Characteristics, 1950-2000, from Observation-Driven Simulations of the Terrestrial Hydrologic Cycle. J. of Climate, 21(3), pp. 432-458.   DOI
4 Son, KH, Bae, DH, and Chung, JS(2011). Drought Analysis and Assessment by Using Land Surface Model on South Korea. J. of Korea Water Resources Association, 44(8), 667-681.   DOI
5 Son, KH, Lee, MH, and Bae, DH(2012). Runoff Analysis and Assessment Using Land Surface Model on East Asia. J. of Korea Water Resources Association, 45(2), pp. 165-178.   DOI
6 UN(2016), WMO Provisional Statement on the Status of the Global Climate in 2016.
7 Wagner, W, Lemoine, G, and Rott, H(1999). A Method for Estimating Soil Moisture from ERS Scatterometer and Soil Data. Remote sensing of environment, 70(2), pp. 191-207.   DOI
8 Wang, A, Lettenmaier, DP, and Sheffield, J(2011). Soil Moisture Drought in China, 1950-2006. J. of Climate, 24(13), pp. 3257-3271.   DOI
9 Myeong, SJ, Hong, HJ, Choi, HI, and Jung, JC(2008). Estimation of North Korea's Vulnerability to Natural Disasters and Research on Inter-Korean Cooperation. Korea Environment Institute, pp. 1-203.
10 Yoo, C(1997). Application of Remote Sensing to Soil Moisture Research. Water for future, 30(1), pp. 64-68.
11 Choi, M, and Jacobs, JM(2008). Temporal Variability Corrections for Advanced Microwave Scanning Radiometer E (AMSR-E) Surface Soil Moisture: Case Study in Little River region, Georgia, US. Sensors, 8(4), pp. 2617-2627.   DOI
12 Ford, TW, and Quiring, SM(2013). Influence of MODIS-derived Dynamic Vegetation on VIC-simulated Soil Moisture in Oklahoma. J. of Hydrometeorology, 14(6), pp. 1910-1921.   DOI
13 Hamlet, AF, Mote, PW, Clark, MP, and Lettenmaier, DP(2007). Twentieth-century Trends in Runoff, Evapotranspiration, and Soil Moisture in the Western United States. J. of Climate, 20(8), pp. 1468-1486.   DOI
14 Kim, G and Lee ER(2004). Development a Downscaling Method of Remotely-Sensed Soil Moisture Data Using Neural Networks and Ancillary Data. J. of Korea Water Reseources Association, 37(1), pp. 21-29.   DOI
15 Kim, KY and North, GR(1993) EOF Analysis of Surface Temperature Field in a Stochastic Climate Model, J. of Climate, AMS, 6(9), pp. 681-1690.
16 Kim, KY and North, GR(1997) EOFs of Harmonizable Cyclostationary Processes. J. of Atmospheric Sciences, AMS, 54(19), pp. 2416-2427.   DOI
17 Lee, KS, Joung, MR, and Yoon, JS(1999). Content and Characteristics of Forest Cover Changes in North Korea. J. of Korean Forestry Society, 88(3), pp. 352-363.
18 Kim, KY, Hamlington, B, and Na, H(2015) Theoretical Foundation of Cyclostationary EOF Analysis for Geophysical and Climatic Variables: Concepts and Examples. Earth Science Reviews, 150, pp. 201-218.   DOI
19 Kwak, CJ, Choi, WJ, and Cho, JW(2015). An Assessment of Flooding Risk Using Flash Flood Index in North Korea; Focus on Imjin Basin. J. of Korea Water Resources Association, 48(12), pp. 1037-1049.   DOI
20 Lee, GM(2012). Water Resources in North Korea and Suggestions for Mutual Cooperation. J. of the Korean Society of Civil Engineers, 60(3), pp. 17-24.
21 Lee, SH(2004). Situation of Degraded Forest Land in DPRK and Strategies for Forestry Cooperation between South and North Korea. J. of Agriculture and Life Sciences, 38(3), pp. 101-113.
22 Lee, YJ(2007). North and South Korea Climate Change Cooperation Policy. Gyeonggi Research Institute, 9(4), pp. 73-93.
23 Liang, X, Lettenmaier, Dennis P, Wood, Eric F, and Burges, SJ(1994). A simple hydrologically based model of land surface water and energy fluxes for general circulation models. J. of Geophysical Research: Atmospheres, 99(D7), pp. 14415-14428.   DOI
24 Lim, YK, Kim, KY, and Lee, HS(2002) Temporal and Spatial Evolution of the Asian Summer Monsoon in the Seasonal Cycle of Synoptic Fields. J. of Climate, AMS, 15(24), pp. 3630-3644.   DOI
25 Michell, AR(1998). The Current North Korean Economy. Economic Integration of the Korean Peninsula. Washington: Institute for International Economics.
26 Kim, KY(1997) Statistical Interpolation using Cyclostationary EOFs. J. of Climate, AMS, 10(11), pp. 2931-2942.   DOI