Chunyu Dong

Chunyu Dong
Sun Yat-Sen University | SYSU · Center for Water Resources and Environment

22.16
 · 
Ph.D.

About

41
Publications
7,968
Reads
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357
Citations
Introduction
Dr. Chunyu Dong is currently an Associate Professor at the Sun Yat-sen University's School of Civil Engineering. He obtained his Ph.D. in Hydrology and Climatology at the Heidelberg University (2016). He has been a Postdoctoral Researcher at the University of California, Los Angeles (UCLA) during 2016-2019. He has a research background in the fields of ecohydrology and snow hydrology. Dr. Dong's research seeks to understand the impacts of climate change on the water cycle and terrestrial ecosystems at various scales. Multiple methods have been jointly applied in his studies, e.g. remote sensing, hydrological modeling, field observations, and hydrogeochemical analysis.
Research Experience
September 2019 - present
Sun Yat-Sen University
Position
  • Professor (Associate)
February 2019 - November 2019
Universität Heidelberg
Position
  • Research Fellow
October 2016 - February 2019
University of California, Los Angeles
Position
  • PostDoc Position
Education
March 2012 - July 2016
Universität Heidelberg
Field of study
  • Hydrology and Climatology
September 2008 - December 2011
Lanzhou University
Field of study
  • Earth System Science
September 2004 - June 2008
Lanzhou University
Field of study
  • Geographic Science

Publications

Publications (41)
Article
Full-text available
Free download before June 13, 2018: https://authors.elsevier.com/a/1WxcA52cuJOLK Snow is an important component of the hydrological cycle. As a major part of the cryosphere, snow cover also represents a valuable terrestrial water resource. In the context of climate change, the dynamics of snow cover play a crucial role in rebalancing the global en...
Article
Full-text available
The prolonged 2012‐2016 California drought has raised many issues including concerns over reduced vegetation health. Drought impacts are complicated by geographical differences in hydroclimatic variability due to a climatic dipole influenced by the Pacific. Analysis of MODIS‐derived Normalized Difference Vegetation Index (NDVI) and self‐calibrated...
Poster
Full-text available
Cloud cover and snow misclassi cations are the two major limitations for the hydrological application of MODIS snow data. Ground-based meteorological data have the inherent potential to provide the means to reconstruct snow cover for regions in which MODIS snow maps are obstructed by clouds, and to reduce misclassi ed snow observations. In this stu...
Article
Full-text available
A combination of drought and high temperatures ("global-change-type drought") is projected to become increasingly common in Mediterranean climate regions. Recently, Southern California has experienced record-breaking high temperatures coupled with significant precipitation deficits, which provides opportunities to investigate the impacts of high te...
Article
Flash floods are one of the most severe natural disasters throughout the world, and are responsible for sizeable social and economic losses, as well as countless injuries and death. Risk assessment, which identifies areas susceptible to flooding, has been shown to be an effective tool for managing and mitigating flash floods. The study aims to intr...
Poster
Full-text available
Rapid warming has reduced seasonal snow cover and changed the hydrological regimes over many areas of the globe. Temperature increase cannot only stimulate snowmelt but also favors a shift of wintertime precipitation towards rainfall, especially in Western and Central Europe that has temperate and humid winters. We assume that the mid-season (Janua...
Conference Paper
Full-text available
California's climate has become warmer since the early 20th century and is experiencing marked aridity in this century. Satellite-based climate and vegetation data, along with surface-based data, were used to investigate the changing hydroclimate and its impacts on both wildland and urban vegetation. Drying has been more evident in southern Califor...
Article
Full-text available
The complex interactions in desert ecosystems between functional types and environmental conditions could be reflected by plant water use patterns. However, the mechanisms underlying the water use patterns as well as the water sources of Tamarix laxa in the mega-dunes of the Badain Jaran Desert, China, remain unclear. This study investigated the wa...
Data
Chunyu Dong. How Do We Measure Future Snow Cover?, Science Trends, 2018. Available at: https://sciencetrends.com/how-do-we-measure-future-snow-cover/ http://doi.org/10.31988/SciTrends.25792
Article
Ecosystems in Mediterranean climates are adapted to seasonal drought. Multi‐annual drought, however, may significantly affect Mediterranean ecosystems and, further, may affect their constituent communities in different ways with differences in responses emerging during severe drought and over the course of long‐term climate change. This study inves...
Conference Paper
Full-text available
It is generally concluded that the climate in California has become drier during the past two decades. However, there is evidence of a distinct north-south pattern of hydroclimatic variability due to a climatic dipole in the western United States. In this study, analysis of MODIS-derived Normalized Difference Vegetation Index (NDVI) and a newly con...
Poster
Full-text available
A camera network has been applied to monitor snow height and snow interception with high temporal resolution in montane forest environments (800-1200 m a.s.l.) in southwestern Germany. A typical feature of this region is the high temporal variability of weather conditions, with frequent snow accumulation and ablation processes and recurrent snow in...
Article
Full-text available
California’s Mediterranean ecosystem has been identified as one of the Earth’s biodiversity hotspots. The high degree of rapid urbanization along the southern California coastline has resulted in the loss of significant natural areas over the last century and protected areas that do exist may be further threatened by climate change, drought, and fi...
Article
Full-text available
A camera network with hourly resolution was used to monitor the complex snow processes in montane forest environments. We developed a semi-automatic procedure to interpret snow depths from the digital images, which exhibited high consistency with manual measurements and station-based recordings. To extract snow interception dynamics, six binary cla...
Article
Full-text available
Cloud cover and snow misclassifications are the two major limitations for the hydrological application of MODIS snow data. Ground-based meteorological data have the inherent potential to provide the means to reconstruct snow cover for regions in which MODIS snow maps are obstructed by clouds, and to reduce misclassified snow observations. In this s...
Article
Full-text available
MODIS snow data are appropriate for a wide range of eco-hydrological studies and applications in the fields of snow-related hazards, early warning systems and water resources management. However, the high spatio-temporal resolution of the remotely sensed data is often biased by snow misclassifications, and cloud cover frequently limits the availabi...
Thesis
Full-text available
Snow is an important component of the hydrological cycle. As a major part of the cryosphere, snow cover also represents a valuable terrestrial water resource. In the context of climate change, the dynamics of snow cover play a crucial role in rebalancing the global energy and water budgets. Remote sensing, hydrological modeling and in situ observat...
Article
Full-text available
An investigation of temporal dynamics and spatial patterns of dryness/wetness conditions over the eastern part of Northwest China (including Shaanxi, Ningxia, the eastern part of Gansu, and a part of southern Inner Mongolia) during the period 1960–2009 is presented. The analysis of this study is threefold. First, the dryness/wetness conditions over...
Article
Full-text available
The formation mechanisms of the mega-dunes and lakes in the hinterland of Badain Jaran Desert, China, is the focus of extensive academic research in the field of geoscience, and an often debated topic is whether atmospheric precipitation on the mega-dune can infiltrate to recharge groundwater. In the present study, the probability distribution func...
Article
Methods for reconstruction of river runoff have been an important component of paleo-climatology and paleo-hydrology. The lower Heihe River was studied from 2002 to 2008 to reconstruct the annual average runoff at the Zhengyi Gorges hydrological station using measured data and improved water and energy balance equations. The results indicate that t...
Article
Full-text available
Based on the positioning observation of precipitation in the hinterland of the Badain Jaran desert and data from four surrounding gauges in the vicinity of the desert, the characteristic of precipitation in the hinterland of the desert is examined. The effect of megadunes on precipitation is primitively analyzed. The difference in precipitation amo...
Article
Based on the daily data from 1960-2009 of 14 meteorological stations in Heihe River basin and the surrounding areas, spatital and temporal distributions of the reference evapotranspiration in Heihe River basin were analyzed after calculated with the Penman-Monteith method recommended by FAO. Nondimensional relative sensitivity coefficients of refer...
Book
Full-text available
本文通过定位观测的方式获取了2010年以来巴丹吉林沙漠腹地温、湿、风、降水、蒸发等常规气候要素以及水位、水温等水文要素的第一手数据,在此基础上开展了湖泊水量平衡计算以及各湖泊和地下水水位的时空变化过程分析,发现降水远不能满足湖泊蒸发损失,湖泊和地下水位春季最高,夏季最低,变化趋势与年内降水分布相反,冬季基本无降水时,各区域水位均快速上升,表明湖泊和地下水主要接受稳定的地下水补给,但其水位年内季节波动可能主要受控于蒸发量变化。在巴丹吉林沙漠和腾格里沙漠各区域开展了近地表沙层含水量、盐分、氢氧稳定同位素变化分析,发现降水仅能下渗到1m以内的沙层,降水的δD和δ18O值明显偏正,地下水及其附近沙层水分的δD和δ18O值则明显偏负,表明降水和地下水来源不同。在室内沙层持水量实验表明,沙层在无蒸发自由...
Article
The meteorological data of 9 stations around the Badain Jaran desert are analyzed by through the liner regression method, 5 year moving average and Mann-Kendall abrupt test to get the feature of climate change in this area in the past 50 years. The data includes monthly mean temperature, mean maximum temperature, mean minimum temperature, precipita...
Article
Based on the observational data of monthly mean air temperature, precipitation and relative humidity from 1960 to 2009 recorded by 4 weather stations, Ejin Banner and Guaizihu, which are located on the northern margin of the Badain Jaran Desert, Alashan right banner and Yabrai, which are located on the southern margin. The fundamental change charac...
Article
Full-text available
The Badain Jaran Desert is a unique geomorphic unit with the world's highest sand hill and more than 100 lakes. However, there are different opinions on the boundary and the area of it, leading to the question whether its area is the second or the third in China. According to latest research achievements and extensive fieldwarks in 2009, questions...

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Projects

Projects (4)
Project
Firstly, we attempt to improve the methodology for investigating snow cover changes and snow-related processes in mountain forest environments based on a combined application of remote sensing, hydrological modeling (TRAIN model) and in situ observations. Secondly, the snow modules of the TRAIN model will be reformed with assistance from satellite-based and in situ snow monitoring. Finally, the snow cover variations and the hydrological consequences under a changing climate will be projected based on the updated hydrological model TRAIN.