About
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Introduction
Development and Improvements in Remote Sensing of Hydrological Cycle Factors, and Research of the Environmental Change & Its Impacts on Hydrological Cycle.
Current institution
Additional affiliations
November 2016 - present
Vietnamese Experts Association in Taiwan
Position
- Honorary President
Description
- Connect, Cooperate, and Develop, for a better future http://www.vneat.org/our-team/
August 2016 - present
Taiwan Group on Earth Observations
Position
- Honorary President
Description
- NGO; Apply earth observations for various applications
August 2010 - June 2016
Taiwan Group on Earth Observations
Position
- CEO
Description
- NGO
Publications
Publications (330)
Drought assessment is critical for effective water re-source allocation and irrigation management, especially in the era of climate change. The satellite-derived Surface Water Avail-ability-Temperature Index (SWATI) has shown its high applica-bility for estimating agricultural drought conditions. The SWATI is developed by integrating three satellit...
Accurately estimating air temperature across spatially dispersed areas holds significant value across a range of disciplines, including hydrology, meteorology, and ecology. For this purpose, ERA-5 air temperature data is globally used but it has a coarse spatial resolution and has a higher bias in the mountainous regions that presents a challenge w...
Flash floods are frequent and devastating natural disasters in small mountainous river basins worldwide, causing significant harm to people, infrastructure, and property. Flash flood susceptibility mapping is a crucial tool for damage prevention and reduction. This study is focused on the creation of flash flood susceptibility maps in a mountainous...
Precipitation extremes have surged in frequency and duration in recent decades, significantly impacting various sectors, including agriculture, water resources, energy, and public health worldwide. Pakistan, being highly susceptible to climate change and extremes, has experienced adverse events in recent times, emphasizing the need for a comprehens...
Estimating tropical cyclone (TC) intensity is crucial for disaster reduction and risk management. This study aims to estimate TC intensity using machine learning (ML) models. We utilized eight ML models to predict TC intensity, incorporating factors such as TC location, central pressure, distance to land, landfall in the next six hours, storm speed...
Climate change, particularly extreme weather events, has significantly affected various sectors, including agriculture,
human health, water resources, sea levels, and ecosystems. It is anticipated that the intensity, duration,
and frequency of these extremes will escalate in the future. This study aims to discover the association between
temperatur...
Study region: Taiwan
Study focus: This study examines the relationship between typhoon parameters and droughts in Taiwan, particularly following the severe drought of 2020–2021. Using tropical cyclone best-track and satellite-based precipitation datasets from 1981 to 2020, we analyzed anomalies, correlation matrices, and wavelet coherence. Seasonal...
In the 21st century, the global environment faces significant threats due to climate change, ranging from floods and droughts to heat waves and other extreme weather events. In recent decades, Pakistan has experienced severe flooding and prolonged droughts, compounding challenges related to livelihoods, public health, and population displacement. T...
Stringent measures, such as lockdowns, were implemented to curb the virus's spread, leading to reduced pollution levels and environmental improvements at various geographic scales, from cities to regions and nations. Such positive effects have been found and reported for regional scales, but not for a global scale till nowadays. This study aims to...
Drought, a destructive natural disaster, poses a significant threat to vulnerable areas worldwide. Its occurrence in Taiwan brings up concerns, particularly for vital sectors such as the high-end semiconductor chip industry. Many satellite-based indexes have been developed to monitor the drought. The Temperature-Vegetation Dryness Index (TVDI), a c...
The rapidity and global spread of the COVID-19 pandemic have left several vital questions in the research community requiring coordinated investigation and unique perspectives to explore the relationship between the spread of disease and air quality. Previous studies have focused mainly on the relation of particulate matter concentration with COVID...
Recurring forest fires disturb ecological balance, impact socio-economic harmony, and raise global concern. This study implements multiple statistical and weighted modelling approaches to identify forest fire susceptibility zones in Eastern India. Six models, namely, Frequency Ratio (FR), Certainty Factor (CF), Natural Risk Factor (NRF), Bivariate...
Climate variability has been a crosscutting issue across the globe, where the effect is more adverse in developing countries such as Ethiopia. The study aimed at investigating climate variability of Ziway Dugda and Dodota Woredas, Central Rift Valley, Ethiopia. The study has used 1983–2012, time series gridded data, field survey, and normalized dif...
Many regions worldwide suffer from heavy air pollution caused by particulate matter (PM2.5) and nitrogen dioxide (NO2), resulting in a huge annual disease burden and significant welfare costs. Following the outbreak of the COVID-19 global pandemic, enforced curfews and restrictions on human mobility (so-called periods of ‘lockdown’) have become imp...
Early detection and quantification of plants’ response to disease and water shortage conditions are very important for the agricultural management. This study represents the first utilization of Normalized Difference Latent Heat Index (NDLI) as a dimensionless indicator to assess plant health. By integrating NDLI with thermal infrared and surface e...
Crop water stress and drought status can be indicat-ed through soil moisture (SM). SM-related factors, such as water availability, vegetation state, and temperature, can be inferred by Normalized Difference Latent Heat Index (NDLI), Normalized Difference Vegetation Index (NDVI), and Land Surface Temper-ature (LST), respectively. This study presents...
Islamabad is essentially the only well-planned city in Pakistan, but groundwater depletion has become a serious issue there because of the rapid increase in population, poor water management, and deforestation. The current water demand of the city is about 220 million gallons per day, with the Capital Development Authority (CDA) providing up to 70...
Estimation of tropical cyclones (TCs) intensity is crucial for disaster reduction and risk management. This study aims to estimate TC intensity using ensemble machine learning models. We utilized four Random Forest (RF) models to predict TC intensity. The input factors include TC’s location, central pressure, distance to land, landfall in the next...
Soil erosion substantially implicates global nutrient and carbon cycling of the land surface. Its monitoring is crucial for assessing and managing global land productivity and socio-economy. The Zhuoshui River Basin, the largest catchment, in Taiwan is highly susceptible to soil erosion by water due to extremely high rainfall, rugged terrain, easil...
Rainwater harvesting is an important step towards maximizing the water availability and land productivity in arid and semi-arid areas. The present study shows that the area of Ghazi Tehsil within Khyber Pakhtunkhwa Province, Pakistan, has great potential for rainwater harvesting due to its feasible climatic and topographic conditions. This area of...
The Vietnamese Mekong Delta has been devastatingly impacted by climate change coupled with sea level rise and natural hazards. As a result, salinity intrusion has become a pressing issue in the coastal provinces of the Mekong Delta in recent years. This environmental problem has called a great attention from the global scientists as demonstrated by...
The Sea Surface Temperature Anomalies (SSTA) are created for the chosen study period from 1977 to 2016 (40-years) including the base period from 1941 to 1970 (30-years) using the two different raw Sea Surface Temperature (SST) datasets named Optimum Interpolation (OI) SST version 2 and Centennial in situ Observation-Based Estimates (COBE) SST versi...
This study uses satellite imagery and geospatial data to examine the impact of floods over the main planting areas for double-cropping rice and grain crops in the middle reaches of the Yangtze River. During summer 2020, a long-lasting 62-day heavy rainfall caused record-breaking floods over large areas of China, especially the Yangtze basin. Throug...
Quantitative and climatological analysis on the tracks and cyclogenesis locations of all 77 typhoons that hit Taiwan in the last 40 years (1977–2016) during typhoon season (May to November) is carried out. Ten pathways of all typhoons that hit Taiwan are detected with almost 1.9 typhoons per year. 53% of typhoons hit Taiwan from the East direction,...
Drought has become a regular phenomenon in the western semi-arid regions of India, where severe drought occurs once in 8–9 years. Therefore, two drought indices, namely temperature condition index (TCI) and vegetation condition index (VCI), were prepared from using Landsat datasets to appraise and monitor of drought pattern for the pre- and post-mo...
Yamuna is one of the main tributaries of the river Ganga and passes through Delhi, the national capital of India. In the last few years, it is considered one of the most polluted rivers of India. We carried out the analysis for the physiochemical and biological conditions of the river Yamuna based on measurements acquired at Palla station, Delhi du...
For the first time after 43 years of its previous eruption in 1977, the Taal volcano in the Philippines (14°N, 120°.59E) erupted in the afternoon of 12 January 2020. Due to the strong anticyclonic circulation in the upper troposphere (~150 hPa), the resultant volcanic ash and sulfur dioxide (SO2) were transported to the downwind tropical central Pa...
Tropical storms (TSs)/Typhoons (TYs) in the Northwest Pacific (NWP) region are one of the most devastating natural hazards, which cause large-scale impacts on human life and infrastructure. In August 2020, a total of 9 tropical storms were identified by International Best Track Archive for Climate Stewardship (IBTrACS) in the NWP region. These TSs/...
This work investigated the characteristics of a boulder field on the exposed south east coast of Ludao Island (Green Island) in southern Taiwan. Although the region regularly experiences seasonal Pacific typhoons, fieldwork on Ludao was prompted following the double-strike of Typhoon Tembin in August 2012, which followed an unusual looping track an...
Tropical cyclones (TCs) are devastating natural hazards that originate in the Bay of Bengal and the Indian Ocean from April to November each year. They make landfall at the southwestern coasts of India and Bangladesh. In the last decade, four major TCs hit the southwestern coast of India. Two cyclones Hudhud and Titli developed in October and Fani...
Tropical cyclones (TCs) are devastating natural hazards that originate in the Bay of Bengal and the Indian Ocean from April to November each year. They make landfall at the southwestern coasts of India and Bangladesh. In the last decade, four major TCs hit the southwestern coast of India. Two cyclones Hudhud and Titli developed in October and Fani...
This paper aims to identify the causes and sources of erosion and deposition at small estuaries in southern central Vietnam under human intervention. The jetty built at the Tam Quan river mouth (Binh Dinh Province, Vietnam) serves as the base for the study. After its completion at the end of 2009, the hydrodynamic and erosion-deposition processes i...
Evidence of the rapid degradation of the Earth’s natural environment has grown in recent years [...]
Hanoi City has been greatly reshaped owing to its “Master Plan by 2030 and a vision to 2050 by Decision 1259/QD-TTg of Vietnam” (called Hanoi Master Plan thereafter). This Hanoi Master Plan results in multi-challenges for the Hanoi City in terms of conserving urban greenspace (UGS). This study pursues to (1) investigate the changing environmental s...
Surface water availability and its temperature are fundamental factors in describing the characteristics of land surface properties. In this study, a new temperature-soil moisture dryness index (TMDI) to quantify surface soil moisture (SSM) is proposed. It is defined as a function of land surface temperature variation and its relationship to surfac...
Dust storms are some of the major environmental hazards across the globe. Dust storms originate and hamper China during the spring season and bring a large amount of dust from the Gobi Desert and Magnolia. On 14-16 March 2021, a major dust storm occurred and impacted major parts of China and the Korean Peninsula. It was the worst hit stand storm in...
Urban greenspace (UGS) represents an essential component of city ecosystems. It plays a critical role for various purposes, such as reducing urban heat island effect and air pollution, regulating torrential run-off and offering joyful routes for walking, jogging and cycling based on personal interest as well as a platform for social networking. It...
The relationship between the physic features of the Earth’s surface and its temperature has been significantly investigated for further soil moisture assessment. In this study, the spatiotemporal impacts of surface properties on land surface temperature (LST) were examined by using Landsat-8 Operational Land Imager (OLI) and Thermal Infrared Sensor...
To analyze the dependence of intensification rates of tropical cyclones (TCs) on the variation of environmental conditions, an index is proposed here to measure the lifetime maximum intensification rates (LMIRs) for the Saffir–Simpson scale category 4–5 TCs over the western North Pacific. To quantitatively describe the intensification rate of major...
Highly urbanized and industrialized Asansol Durgapur industrial belt of Eastern India is characterized by severe heat island effect and high pollution level leading to human discomfort and even health problems. However, COVID-19 persuaded lockdown emergency in India led to shut-down of the industries, traffic system, and day-to-day normal work and...
Broadleaf deciduous forests (BDFs) or dry dipterocarp forests play an important role in biodiversity conservation in tropical regions. Observations and classification of forest phenology provide valuable inputs for ecosystem models regarding its responses to climate change to assist forest management. Remotely sensed observations are often used to...
This paper investigates season-dependent variability and environment-dependent distributions of all 30 super-typhoons (STYs) that occurred in the Northwest Pacific (NWP) basin over 2013-2017. The increasing strength of typhoons (TYs) in the basin in recent years, especially in the winter season, is a big matter of concern for meteorological scienti...
The detailed evolution of different tropical tropopause layer (TTL) parameters, such as tropopause height (cold point (CPH)/lapse rate (LRH)/convective (COH)), its corresponding temperature (CPT/LRT/COT) and TTL thickness in response to recent 2015–16 El Niño event are delineated using high-resolution Constellation Observing System for Meteorology,...
Increasing strength of typhoons in the North west Pacific and its correlation with increasing sea surface temperature during 4 decades (1977-2016)
This paper analyzes the interactions between typhoons (TYs) Parma and Melor (2009) in the North West Pacific (NWP) Ocean. The TY Parma (2009) is chosen for investigation because it has unique track with multiple U-turns and 3 landfalls over Luzan Island of Philippines that are extremely difficult, if not impossible, to forecast by numerical weather...
The El Niño Southern Oscillation (ENSO) signatures interpreted in different tropical tropopause layer (TTL) parameters are investigated by using long-term Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC)-1 radio occultation temperature data from July 2006 to March 2019. The TTL parameters include the cold point tropo...
Drought has severe impacts on human society and ecosystems. In this study, we used data acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) and Tropical Rainfall Measuring Mission (TRMM) sensors to examine the drought effects on vegetation in Afghanistan from 2001 to 2018. The MODIS data included the 16-day 250-m composites of the...
Increasing strength of typhoons in the Northwest Pacific Ocean in the recent years and their influencing seasonal factors
It is an investigation of changing nature of Tropical Storms in the North West Pacific basin
Increasing strength of typhoons in the Northwest Pacific Ocean in the recent years and their influencing seasonal factors
An overall investigation of changing nature of Tropical Storms in the North West Pacific basin
For the first time after 43 years of its previous eruption in 1977, the Taal volcano in the Philippines (14° N, 120.59° E) erupted in the afternoon of 12 January, 2020. Interestingly, the Taal volcanic eruption was associated with a strong anticyclonic circulation at the upper levels over the western Pacific region in the northern hemisphere. As a...
Due to rapid urbanization, the development of megacities and metropolises worldwide is creating water scarcity, social-environmental risk, and challenges to the regions where water supply from rivers and alluvial aquifers is insufficient and unstable. Groundwater exploration in fractured bedrock of mountainous regions is thus a crucial issue in the...
Đánh giá tính tổn thương môi trường sinh thái hiện đang rất cần thiết cho việc quản lý và phục hồi tài nguyên - thiên nhiên - môi trường. Tuy nhiên, để đánh giá tổn thương cho vùng rộng lớn là công việc rất phức tạp đòi hỏi các số liệu liên ngành và phương pháp nghiên cứu đánh giá đảm bảo xem xét được tính toàn diện của các yếu tố ảnh hưởng. Chính...
Rapid and uncontrolled population growth along with economic and industrial development, especially in developing countries during the late twentieth and early twenty-first centuries, have increased the rate of land-use/land-cover (LULC) change many times. Since quantitative assessment of changes in LULC is one of the most efficient means to unders...
As climate change has been of great concern worldwide for many years, addressing global climate challenges is the most significant task for humanity. Thus, the Group on Earth Observations (...)
The occurrence frequency of drought has intensified with the unprecedented effect of global warming. Knowledge about the spatiotemporal distributions of droughts and their trends is crucial for risk management and developing mitigation strategies. In this study, we developed seven artificial neural network (ANN) predictive models incorporating hydr...
Salinity intrusion is a pressing issue in the coastal areas worldwide. It affects the natural environment and causes massive economic loss due to its impacts on the agricultural productivity and food safety. Here, we assessed the salinity intrusion in the Tra Vinh Province, in the Mekong Delta of Vietnam. Landsat 8 OLI image was utilized to derive...
The nature of tracks of tropical storms over four decades in the North West Pacific basin and their spatiotemporal association with storm fundamental parameters and phases of ENSO
Debris flows have been always a serious problem in the mountain areas. Research on the assessment of debris flows susceptibility (DFS) is useful for preventing and mitigating debris flow risks. The main purpose of this work is to study the DFS in the Shigatse area of Tibet, by using machine learning methods, after assessing the main triggering fact...
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The seasonal warming over the southwestern Yellow Sea (YS) in the spring is of vital importance to the local ecologic environment, especially to the massive green algae blooms of the YS in late spring and early summer. Based on daily optimum interpolation sea surface temperature (SST) data consisting of satellite derived SST from Advanced Very High...
Study on the shape of tracks of tropical storms in the North West Pacific basin
Study on the shape of tracks of tropical storms in the North West Pacific basin
The recent droughts that have occurred in different parts of Ethiopia are generally linked to fluctuations in atmospheric and ocean circulations. Understanding these large-scale phenomena that play a crucial role in vegetation productivity in Ethiopia is important. In view of this, several techniques and datasets were analyzed to study the spatio–t...
The increase in the urban population and number of severe weather extremes (including excessive heat) potentially linked to climate change has highlighted the demand of research into assessment and risk mitigation solutions. One of the naturally-based solutions for urban heat stress risk is to enhance the effectiveness of urban greenspaces to mitig...
Interaction between typhoons/tropical cyclones/hurricanes are called the Fujiwhara effect. It is a case study of a unique Fujiwhara case.
In Vietnam, making efficient policy decisions to minimize vulnerability to typhoons is crucial. However, the spatial pattern of vulnerability and adaptive capacity to typhoons is poorly understood, as this requires investigation of the factors that make a society vulnerable to natural disasters, integrating the dimensions of hazard, exposure and se...
Ground observations and models are widely used to access evapotranspiration (ET) of the land surface. However, they cannot be conveniently implemented globally due to the former ones’ limited spatial coverage and the later ones’ complexity. Hence, the multi-spectral remote sensing techniques are developed to investigate the energy transfer features...
Normalized Difference Latent Heat Index (NDLI) is proposed for extracting latent heat information at the land-air interface. Its advantage is in its optimizing the spectral sensitivity on water availability of land surface by incorporating the spectral reflectance of the Green, Red, and Shortwave-infrared wavelength bands. In this study, NDLI time...
Tropical cyclones (TCs) are complex sources of atmospheric gravity waves (GWs). In this study, the Weather Research and Forecasting Model was used to model TC Soudelor (2015) and the induced elliptical structures of GWs in the upper troposphere (UT) and lower stratosphere (LS) prior to its landfall over Taiwan. Conventional, spectral and wavelet an...
Identifying vulnerable levels of eco-environment over a global scale is critical for environmental management and ecological conservation. We present the method to optimize the use of freely assessable datasets to derive 16 factors for a proposed assessment framework (Nguyen and Liou, 2019; Liou et al., 2017; Nguyen et al., 2016)[1–3]. Results show...
It is well reported that the 2015–16 El Niño event is one of the most intense and long lasting events in the 21st century. The quantified changes in the trace gases (Ozone (O3), Carbon Monoxide (CO) and Water Vapour (WV)) in the tropical upper troposphere and lower stratosphere (UTLS) region are delineated using Aura Microwave Limb Sounder (MLS) an...
It is well reported that the 2015-16 El Niño event is one of the most intense and long lasting events in the 21st century. The quantified changes in the trace gases (Ozone (O 3), Carbon Monoxide (CO) and Water Vapour (WV)) in the tropical upper troposphere and lower stratosphere (UTLS) region are delineated using Aura Microwave Limb Sounder (MLS) a...
Land use and land cover (LULC) play a crucial role in the interaction between the land and atmosphere, influencing climate at local, regional, and global scales. LULC change due to urbanization has significant impacts on local weather and climate. Land-cover changes associated with urbanization create higher air temperatures compared to the surroun...
Global environments are threatened by intensively natural variation and continuously increased human-made disturbances. Assessment of the global eco-environment vulnerability (global EV or GEV) caused by both natural and human-induced disturbances plays a key role in providing valuable information about ecological and environmental background for d...
Questions
Questions (6)
📷 Postdoctoral Positions available! Apply now! 📷
📷 Topic: hydrometeorological extremes under the context of climate change (including cyclones, droughts, thermal extremes, etc.)
📷 Where: The Hydrology Remote Sensing Lab (HRSL) at Center for Space and Remote Sensing Research, National Central University (Taiwan)
📷 Deadline: at the time of positions filled; opening starts from August 1, 2023.
* Info: Prof. Yuei-An Liou (yueian@csrsr.ncu.edu.tw)
Our research integrates satellite-based remote sensing techniques, hydrological modeling, artificial intelligence models, and data analysis to address water-related challenges. We strive to enhance our understanding of hydrometeorological extremes within the context of climate change.
For instance, our focus on improving our understanding of drought risk and its dynamics is to consider the changing climate patterns. Responsibilities of the postdoctoral fellows include:
• Conducting independent research on assessing drought risk in the context of climate change.
• Developing innovative approaches and methodologies for analyzing remote sensing data and hydrological modeling.
• Collecting, processing, and analyzing satellite-based remote sensing datasets to characterize drought conditions.
• Collaborating with interdisciplinary research teams to integrate climate data, hydrological models, and socioeconomic factors.
• Publishing research findings in high-impact scientific journals and presenting at relevant conferences.
• Assisting in supervising graduate students and mentoring junior researchers.
• Participating in grant proposal writing and seeking external funding opportunities to support the research.
📷 Apply here:
Please send your application to Ms. Flora Liang at fl1624@csrsr.ncu.edu.tw with the subject line "Postdoc Application - Hydrology Remote Sensing Lab." Review of applications will commence immediately and continue until the position is filled.
Required documents:
Personal resume (including academic experience, autobiography, recent photo), diploma, and transcript.
Graduation thesis and other related works.
#Hydrology #RemoteSensing #ClimateChange #DroughtRisk #PostdocOpportunity #ResearchFellowship
Welcome to submit research outcomes to our special issue: “Earth Observations for Environmental Sustainability for the Next Decade Ⅱ” (https://www.mdpi.com/journal/remotesensing/special_issues/EOES_rs2).
Here you are two main reasons:
1. The journal Remote Sensing’s CiteScore is increased from 6.6 in 2020 to 7.4 in 2021 (https://www.scopus.com/sourceid/86430). It is a Q1 journal with ranking of #17 out of 191 journals in the field of “Earth and Planetary Sciences – General Earth and Planetary Sciences.”
2. Through this channel, 30% off on article processing charge (APC) can be offered.
I supposed the answer is YES. Then, the question is how to improve the estimate of water availability by using remote sensing scheme. Here you are a new index for your considerations: NDLI as newly proposed in the prestigious journal IEEE TGRS: Liou, Y.-A.*, Mai Son Le, and Hwa Chien, 2019a: Normalized Difference Latent Heat Index for Remote Sensing of Land Surface Energy Fluxes, IEEE Transactions on Geoscience and Remote Sensing, 57(3), 1423 - 1433, doi: 10.1109/TGRS.2018.2866555.
Question: Can a newly developed Normalized Difference Latent heat Index (NDLI) significantly advance the research fields, requiring land surface heat flux?
Background: Latent heat is the energy released or absorbed by a substance through phase change without changing its temperature. Its flux is a crucial element of the hydrological cycle at the land–air interface. Many water-related indexes have been proposed as indicators for latent heat flux extraction from satellite imagery, while the extraction accuracy still remains a space to improve nowadays.
Advancements: A new multiband index, called normalized difference latent heat index (NDLI), is proposed for remote sensing of land surface heat flux. The NDLI is found to be the most sensitive and reliable index outperforming the previously developed indexes to determine the characteristics of water content in different land cover types. It is concluded that NDLI can be used as a good indicator to represent the potential latent heat flux at the earth’s surface.
Citation: Liou, Y.-A.*, M.S. Le, and H. Chien, 2019 (March): Normalized Difference Latent Heat Index for Remote Sensing of Land Surface Energy Fluxes, IEEE Transactions on Geoscience and Remote Sensing, 57(3), 1423 - 1433, doi: 10.1109/TGRS.2018.2866555. (SCI, IF=4.662) (https://ieeexplore.ieee.org/document/8464042)
Question: Interested in knowing how to develop measures for adjusting the land surface temperature, and for mitigating the consequent effects of urban heat islands (UHIs) by managing the land use composition and percentage coverage of the individual land-use type?
Background: In the context of climate change and global warming, it is important to monitor the signatures of urban heat islands (UHIs) and to understand their impacts on ecosystems and human health. UHI arises from the phenomenon of relatively higher temperature in the urban center over its surrounding rural environment.
Advancements: The results of this study suggest that the newly developed model provides an opportunity for urban planners and designers to develop measures for adjusting the LST, and for mitigating the consequent effects of UHIs by managing the land use composition and percentage coverage of the individual land-use type.
Citation: Nguyen Thanh Hoan, Yuei-An Liou*, Anh Kim Nguyen, Ram C. Sharma, Tran Duy Phien, Chia-Ling Liou, and Dao Dinh Cham 2018: Assessing the Effects of Land-Use Types in Surface Urban Heat Islands for Developing Comfortable Living in Hanoi City. Remote Sens. 2018, 10, 1965. (SCI, IF=3.406)( https://www.mdpi.com/2072-4292/10/12/1965 )
The latest satellite images have been utilized to update the inventories of glaciers and glacial lakes in the Pumqu river basin, Xizang (Tibet), in the study [Che et al. 2014]. Compared to the inventories of the 1970s, the areas of glaciers are reduced by 19.05% while the areas of glacial lakes are increased by 26.76%. The magnitudes of glacier retreat rates and glacial lake increase rates during the period of 2001–2013 are more significant than those of the period of the 1970s–2001. The accelerated changes in areas of the glaciers and glacial lakes, as well as the increasing temperature and rising variability of precipitation, have resulted in an increased risk of glacial lake outburst floods (GLOFs) in the Pumqu river basin.
Integrated criteria were established to identify potentially dangerous glacial lakes based on a bibliometric analysis method. It was found that in total, 19 glacial lakes were identified as dangerous. Such findings suggest that there is an immediate need to conduct field surveys, not only to validate the findings, but also to acquire information for further use in order to assure the welfare of humans.
Also, it is concluded that global warming is the main reason for glacier recession and glacial lake expansion in the region of Pumqu river basin.
