Joo‐Heon Lee
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View article: Development and application of a watershed-based environmental drought index reflecting water cycle characteristics
Development and application of a watershed-based environmental drought index reflecting water cycle characteristics Open
Droughts driven by climate change increasingly affect aquatic ecosystems by deteriorating water quality. However, conventional drought indices primarily focus on water quantity, limiting their ability to capture environmental impacts. To a…
View article: Independent Component Analysis-Based Composite Drought Index Development for Hydrometeorological Analysis
Independent Component Analysis-Based Composite Drought Index Development for Hydrometeorological Analysis Open
Drought is a complex and interconnected natural phenomenon, involving multiple drought types that mutually influence each other. To capture this complexity, various composite drought indices have been developed using diverse methodologies.…
View article: Introducing a Novel Standardized Precipitation Evaporation Differential Index (SPEDI) for Improved Flash Drought Detection and Assessment: A Case Study in South Korea
Introducing a Novel Standardized Precipitation Evaporation Differential Index (SPEDI) for Improved Flash Drought Detection and Assessment: A Case Study in South Korea Open
This study introduces the Standardized Precipitation Evaporation Differential Index (SPEDI), a new composite drought index designed to better capture flash drought conditions by accounting for both precipitation deficits and evaporative de…
View article: Evaluating the Effects of River Crossings on Fish Habitats and Connectivity
Evaluating the Effects of River Crossings on Fish Habitats and Connectivity Open
With the growth of urban populations, it has become necessary to develop new urban areas as well as to utilize rivers as water supply resources, which directly impacts human life. Weirs, which are structures built across rivers to regulate…
View article: Research on the Index Calculation Method for the Impact of Drought on Water Quality in the Nakdong River, Korea
Research on the Index Calculation Method for the Impact of Drought on Water Quality in the Nakdong River, Korea Open
The impact of drought is intensifying due to climate change, leading to significant environmental consequences, particularly concerning river water quality. While drought is typically classified as meteorological or hydrological, studies a…
View article: Identification of propagation characteristics from meteorological drought to hydrological drought using daily drought indices and lagged correlations analysis
Identification of propagation characteristics from meteorological drought to hydrological drought using daily drought indices and lagged correlations analysis Open
Study region: The Juam Dam area in Suncheon, Jeollanam-do, South Korea Study focus: This study aims to analyze drought propagation characteristics using time-lagged correlation analysis based on daily drought index, determining the lag tim…
View article: Analyzing the Regional Impact of Temperature Change by Long-term Climate Scenarios on Infrastructure Construction
Analyzing the Regional Impact of Temperature Change by Long-term Climate Scenarios on Infrastructure Construction Open
The construction period is most affected by weather, and as recent climate change becomes more severe, weather conditions such as temperature, precipitation, snowfall, and wind that differ from region to region are expected to have a signi…
View article: Autoencoder-based composite drought indices
Autoencoder-based composite drought indices Open
Depending on the type, drought events are described using different indices, such as meteorological, agricultural, and hydrological. The use of different indices often causes confusion for making water-related management decisions. One sim…
View article: Evaluation and securing of ecological flow by linking fish growth scenarios and basin water budget analysis
Evaluation and securing of ecological flow by linking fish growth scenarios and basin water budget analysis Open
Maintaining ecological flow is crucial for preserving healthy aquatic ecosystems. This study presents a novel approach to assess and secure ecological flow by linking fish growth scenarios with water budget analysis. Addressing the challen…
View article: Building Quality-Oriented Societies in Asia Through Effective Water-Related Disaster Risk Reduction and Climate Change Adaptation
Building Quality-Oriented Societies in Asia Through Effective Water-Related Disaster Risk Reduction and Climate Change Adaptation Open
Asia-Pacific countries are facing growing risks from water-related disasters that are being exacerbated by climate change, urbanization, population growth, and development activities. Effective disaster risk reduction (DRR) and climate cha…
View article: Assessing the Impact of Human-Induced and Climate Change-Driven Streamflow Alterations on Freshwater Ecosystems
Assessing the Impact of Human-Induced and Climate Change-Driven Streamflow Alterations on Freshwater Ecosystems Open
Streamflow is critical and master variable for maintaining healthy and restorative processes in freshwater ecosystems. However, human-induced dam construction and climate change have significantly altered the flow regime and disrupted hydr…
View article: Modeling, challenges, and strategies for understanding impacts of climate extremes (droughts and floods) on water quality in Asia: A review
Modeling, challenges, and strategies for understanding impacts of climate extremes (droughts and floods) on water quality in Asia: A review Open
The increasing frequency and intensity of extreme climate events are among the most expected and recognized consequences of climate change. Prediction of water quality parameters becomes more challenging with these extremes since water qua…
View article: Investigating Characteristics of Drought-Flood Abrupt Alternation Events in South Korea for Comprehensive Disaster Management
Investigating Characteristics of Drought-Flood Abrupt Alternation Events in South Korea for Comprehensive Disaster Management Open
Recently, due to the climate change, the frequency of extreme hydrological disasters such as drought and flood is increasing worldwide. Especially, sudden change in precipitation cause drought and flood often occur alternately in a short p…
View article: Enhanced Prediction and Determination of Hydrological Drought at Ungauged River Intake Stations under Changing Climate
Enhanced Prediction and Determination of Hydrological Drought at Ungauged River Intake Stations under Changing Climate Open
Droughts, which are expected to worsen under global climate change, have major impacts on human life and the natural environment. In this study, an analysis system was established for predicting and determining hydrological drought conditi…
View article: OneMap Drought Monitoring Analysis Based on Statistical Models
OneMap Drought Monitoring Analysis Based on Statistical Models Open
As the effects of droughts on agriculture and industrial water availability intensify with climate change, developing suitable drought prevention and mitigation measures has become increasingly important. However, measuring drought conditi…
View article: Regional Analysis of Hotspot and Coldspot Areas Undergoing Nonstationary Drought Characteristics in a Changing Climate
Regional Analysis of Hotspot and Coldspot Areas Undergoing Nonstationary Drought Characteristics in a Changing Climate Open
Conventional drought indices based on stationary assumptions are no longer appropriate for drought assessments conducted under conditions with climate change or anthropogenic influences. In this study, a time-varying Nonstationary Standard…
View article: Appraisal of Water Security in Asia: The Pentagonal Framework for Efficient Water Resource Management
Appraisal of Water Security in Asia: The Pentagonal Framework for Efficient Water Resource Management Open
Swathes of global water challenges, such as water shortages, water pollution, water-related disasters, and degradation of water environments, have seriously threatened human development. The discussion of water security or insecurity has b…
View article: Remote Sensing of Hydro-Meteorology
Remote Sensing of Hydro-Meteorology Open
Flood/drought, risk management, and policy: decision-making under uncertainty. Hydrometeorological extremes and their impact on human–environment systems. Regional and nonstationary frequency analysis of extreme events. Detection and predi…
View article: Environmental Disasters and Individuals’ Emergency Preparedness:
Environmental Disasters and Individuals’ Emergency Preparedness: Open
Environmental disasters are becoming more frequent. These disasters not only include the most common natural disasters, but also include man-made disasters, such as public health, accident disasters, etc., which have caused greater damage …
View article: Copula-Based Drought Monitoring and Assessment According to Zonal and Meridional Temperature Gradients
Copula-Based Drought Monitoring and Assessment According to Zonal and Meridional Temperature Gradients Open
Drought is one of the most severe natural disasters. However, many of its characteristic variables have complex nonlinear relationships. Therefore, it is difficult to construct effective drought assessment models. In this study, we analyze…
View article: Integrated Drought Monitoring and Evaluation through Multi-Sensor Satellite-Based Statistical Simulation
Integrated Drought Monitoring and Evaluation through Multi-Sensor Satellite-Based Statistical Simulation Open
To proactively respond to changes in droughts, technologies are needed to properly diagnose and predict the magnitude of droughts. Drought monitoring using satellite data is essential when local hydrogeological information is not available…
View article: Changes in Intensity and Variability of Tropical Cyclones over the Western North Pacific and Their Local Impacts under Different Types of El Niños
Changes in Intensity and Variability of Tropical Cyclones over the Western North Pacific and Their Local Impacts under Different Types of El Niños Open
This study investigated the effects of El Niño events on tropical cyclone (TC) characteristics over the western North Pacific (WNP) region. First, TC characteristics associated with large-scale atmospheric phenomena (i.e., genesis position…
View article: Development of a Hydrological Drought Forecasting Model Using Weather Forecasting Data from GloSea5
Development of a Hydrological Drought Forecasting Model Using Weather Forecasting Data from GloSea5 Open
This study developed a hydrological drought forecasting framework linked to the meteorological model and land surface model (LSM) considering hydrologic facilities and evaluated the feasibility of the Modified Surface Water Supply Index (M…
View article: Estimation of the Future Probable Precipitation based on the Assumption of Non-Stationarity in Seoul
Estimation of the Future Probable Precipitation based on the Assumption of Non-Stationarity in Seoul Open
In this study, an estimation of the future probable rainfall in Seoul, Korea, was performed, using non-stationary frequency analysis according to climate change and it was compared with the current probable rainfall. Hourly rainfall data p…