Abstract
The Seasonal Difference in Soil Moisture Patterns Considering the Meteorological Variables Throughout the Korean Peninsula
Highlights
Soil moisture is an essential factor in hydrological, environmental, and climatic processes (Famiglietti and Wood 1994)
We found that the soil moisture variations are more sensitive to changes in ground temperature than changes in air temperature based on the scatter plot and R-value gradients (Figs. 5a and b)
This study focused on comparing the seasonal differences in soil moisture distribution and verifying the correlations between soil moisture and meteorological variables, as a function of the season, and investigated how these factors influenced the land surface hydrological cycle in the Korean Peninsula
Summary
Soil moisture is an essential factor in hydrological, environmental, and climatic processes (Famiglietti and Wood 1994). Better understanding of the associations between soil moisture and meteorological factors, such as precipitation, air temperature, ground temperature, and the amount of insolation, enable hydrologists and meteorologists to improve estimations of the variances in evapotranspiration and in the spatial and temporal patterns of soil moisture (Douville 2003; Rosenbaum et al 2012). As a follow-up study to Cho and Choi (2014), this study focuses on the spatio-temporal soil moisture patterns between two seasons (summer and winter) considering four meteorological variables that can represent the Asian Monsoon seasonal characteristics in northeast Asia. We used daily soil moisture content and meteorological datasets, precipitation, air temperature, ground temperature, and the amount of insolation, from January 2012 to February 2013 in the Korean Peninsula as a regional scale case study. The results may lead to better understanding of the influence of meteorological variables on soil moisture variations in monsoon climate regions
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