A5100424680- Cryospheric studies and observations
- Climate change and permafrost
- Arctic and Antarctic ice dynamics
- Hydrology and Watershed Management Studies
- Soil Moisture and Remote Sensing
- Smart Materials for Construction
- Landslides and related hazards
- Geology and Paleoclimatology Research
- Meteorological Phenomena and Simulations
- Plant Water Relations and Carbon Dynamics
- Regional Economic and Spatial Analysis
- Groundwater and Isotope Geochemistry
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Climate variability and models
- Conservation, Biodiversity, and Resource Management
- Wildlife Ecology and Conservation
- Solar Radiation and Photovoltaics
- Groundwater flow and contamination studies
- Remote Sensing and LiDAR Applications
Hunan University of Science and Technology
2016-2024
Chinese Academy of Sciences
2011-2014
Abstract Endorheic basins around the world are suffering from water and ecosystem crisis. To pursue sustainable development, quantifying hydrological cycle is fundamentally important. However, knowledge gaps exist in how climate change human activities influence endorheic basins. We used an integrated ecohydrological model, combination with systematic observations, to analyze Heihe River Basin, a typical basin arid region of China. The budget was closed for different landscapes, river...
<strong class="journal-contentHeaderColor">Abstract.</strong> There is currently no glacial lake inventory data set for the entire high-mountain Asia (HMA) area. The definition and classification of lakes remain controversial, presenting certain obstacles to extensive utilization data. This study integrated glacier 668 Landsat TM, ETM<span class="inline-formula">+</span>, OLI images adopted manual visual interpretation extract boundaries within a 10 km buffer from extent using ArcGIS...
Abstract Snowmelt contributions to water resources in cold regions are receiving increasing attention. However, there clear challenges accurately distinguish the snowmelt different hydrological processes seasonal snow regions. Here, we present an improved method evaluate by tracing flow paths media based on a distributed geomorphology‐based ecohydrological model coupled with physically module. The calculated contribution is not limited river discharge but also applicable evaporation and soil...
Abstract Permafrost in Northeastern China is not only controlled by latitude and elevation, but also locally environmental factors, such as vegetation cover human activities. During 2009–2022, thinning active layer, increasing annual maximum frost depth talik zones lowering ground temperature above the of dividing point (DDP) between permafrost cooling warming have been observed many places, possibly due to global hiatus (GWH). However, responses below DDP did show a clear trend GWH, despite...
Abstract Snow and frozen soil prevail in cold regions worldwide, the integration of these processes is crucial hydrological models. In this study, a combined model was developed by fully coupling simultaneous heat water with geomorphologically based distributed model. The simulates vertical lateral transfer as well fluxes capable representing effects snowmelt on regions. This evaluated using situ observations Binggou watershed, an experimental watershed for region hydrology Watershed Allied...
In cold regions, the occurrence of frozen ground has a fundamental control over character water cycle. To investigate impact changing temperature conditions on hydrological processes in context climate change, distributed model with an explicit module was applied to alpine watershed upstream area Hei'he River Qilian Mountains, northwest China. After evaluating base model, we considered scenarios frost-free and change. Results showed that successfully captured balance thermal regimes basin....
Abstract The solar radiation incident in a mountainous area with complex terrain has strong spatial heterogeneity due to the variations slope orientation (self‐shading) and shadows cast by surrounding topography agents (topographic shading). Although self‐shading been well studied considered most land surface hydrological models, topographic shading is usually ignored, its influence on thermal processes cold remains unclear. In this study, algorithm consideration for both implemented...
Abstract. Under a pronounced climate warming, permafrost has been degrading in most areas globally, but it is still unclear the northwestern part of Da Xing'anling Mountains, Northeast China. According to 10-year observation and active-layer temperatures, multi-year average mean annual ground temperatures at 20 m was −2.83, −0.94, −0.80, −0.70, −0.60, −0.49 ∘C, respectively, boreholes Gen'he4 (GH4), Mangui3 (MG3), Mangui1 (MG1), Mangui2 (MG2), Gen'he5 (GH5), Yituli'he2 (YTLH2), with depths...
Abstract Surface solar radiation (SSR), as a primary component of heat budget between land and atmosphere, controls both water energy exchanges. However, the sub‐grid terrain radiative effect (STRE) which exerts critical influences on SSR simulation is usually extremely simplified or even ignored in most current surface models (LSMs) due to heavy computational burden. In this study, we developed physically realistic computationally efficient three dimensional (3D) STRE scheme implemented it...
Soil moisture and soil temperature are tightly coupled variables in land surface models. The objective of this study was to evaluate the impact joint assimilation data a model on characterization. Three synthetic tests evaluated (measured by MODIS) brightness (from L‐band) into Community Land Model using local ensemble transform Kalman filter (LETKF). following three were performed for dry wet conditions: (i) assimilating observations only; (ii) (iii) both observations. results show that...
Abstract Permafrost degradation increases the likelihood of glacial lake outburst floods on Tibetan Plateau. Analyses freeze–thaw conditions in moraine dams and associated impacts dam stability contribute toward reducing natural hazard risks. We used heat transfer module COMSOL Multiphysics to simulate soil temperature field Longbasaba dam, which is northern slope central Himalaya. There close agreement between simulated observed values. Root mean squared errors (the square root all error)...
Abstract. There is currently no glacial lake inventory data set for the entire High Mountain Asia (HMA) area. The definition and classification of lakes remain controversial, presenting certain obstacles to extensive utilization data. This study integrated glacier 426 Landsat TM/ETM+/OLI images, adopted manual visual interpretation extract boundaries within a 10-km buffer from terminals using ArcGIS ENVI software, normalized difference water index maps, Google Earth images. theoretical...
Deforestation is thought of as a huge threat to carbon neutrality and the development contemporary society it has brought wide interest attention in science community develop new methods identify quantify occurrence extent forest loss. Understanding forest-loss patterns essential for management protection. With help high-spatial-resolution remote-sensing dataset on loss, spatial temporal dynamics deforestation forests Southwest China (SWC) have been investigated. The major findings this...
ABSTRACT Thermal and hydrological dynamics their impacts on the stability of a moraine dam were analyzed simulated for Longbasaba Lake in Himalaya, based soil temperature, moisture heat flux data observed at different depths from 2012 to 2016. Annual average income is greater than expenditure surface. The mean annual temperature 0–150 cm >0°C, although air was −3.6°C over dam, indicating relatively larger difference between air. volumetric content low with an 5%, peaking after snow cover...
Abstract. Two ice cores were retrieved from high elevations (~ 5800 m a.s.l.) at Mt. Nyainqentanglha and Geladaindong in the southern to inland Tibetan Plateau. The combined analysis of tritium (3H), 210Pb, mercury tracers, along with other chemical records, revealed that two coring sites had not received net accumulation since least 1950s 1980s, respectively, implying an annual loss rate more than several hundred millimeter water equivalent over these periods. Both mass balance modeling...
Abstract Downward solar radiation (DSR) and air temperature (Ta) have significant influences on the thermal state of frozen ground. These parameters are also important forcing terms for physically based land surface models (LSMs). However, quantitative inaccuracies in DSR Ta products simulated ground temperatures remain unclear. In this study, three (CMFD‐SR, Tang‐SR, GLDAS‐SR) two (CMFD‐Ta GLDAS‐Ta) were used to force an LSM model alpine watershed Northwest China, investigate sensitivity...
Quality-controlled and serially complete daily air temperature data are essential to evaluating modelling the influences of climate change on permafrost in cold regions. Due malfunctions location changes observing stations, temporal gaps ( i.e ., missing data) common collected datasets. The objective this study was assess efficacy Kriging spatial interpolation for estimating fill northeast China. A cross-validation experiment conducted. Daily series from 1960 2012 at each station were...
Most of glacial lakes hold meltwater, and have shown a trend expansion in recent decades. However, few studies distinguished the amount meltwater from total water nourishment these lakes. We quantified retained by comparing balance glacier-fed non-glacier-fed High Mountain Asia (HMA). Results showed that 8.18±0.64 Gt was 8115 (~44%) HMA annual contribution glacier melt to sea-level rise may therefore been overestimated ~1.5%. In glaciation zones, glaciers 6.94×103 m3/km2 with spatial...
Abstract. Under a pronounced climate warming, permafrost has been degrading in most areas, but it is still unclear the northwestern part of Da Xing’anling Mountains, Northeast China. According to ten-year observation and active-layer temperatures, multi-year average mean annual ground temperatures at 20 m was -2.83, -0.94, -0.80, -0.70, -0.60 -0.49 °C, respectively, Boreholes GH4, MG3, MG1, MG2, GH5 YTLH2, with depths table varying from 1.1 7.0 m. Ground cooling shallow detected, resulting...