Article
Geography, Physical
Christophe Ogier, Dirk-Jan van Manen, Hansruedi Maurer, Ludovic Rass, Marian Hertrich, Andreas Bauder, Daniel Farinotti
Summary: Ground penetrating radar (GPR) has been widely used in glaciology to study glaciers' properties such as ice thickness and water content. However, interpreting GPR data in temperate glaciers is challenging due to strong scattering and attenuation. This study uses numerical modeling to investigate the effects of liquid water content and water inclusions on GPR signals, and finds that their impact is larger than that of other factors such as wet snowpack or heterogeneous ice permittivity distribution. The presence of water inclusions is shown to be necessary and sufficient for reproducing the typical characteristics of GPR data in the field.
JOURNAL OF GLACIOLOGY
(2023)
Article
Geography, Physical
Janis Karuss, Kristaps Lamsters, Ireneusz Sobota, Jurijs Jeskins, Peteris Dzerins, Andrew Hodson
Summary: The study of the thermal structure and drainage system of Waldemarbreen shows that hydrofracturing at higher elevations can play a major role in englacial water drainage through cold ice, in contrast to the cut and closure mechanism forming conduits in parts of the lower ablation area.
JOURNAL OF GLACIOLOGY
(2022)
Article
Engineering, Geological
Weile Li, Bo Zhao, Qiang Xu, Gianvito Scaringi, Huiyan Lu, Runqiu Huang
Summary: Glacier-rock avalanches (GRAs) have been occurring frequently in the Sedongpu gully in the eastern Himalayan syntaxis, causing blockages in the Yarlung Zangbo River. Through analyzing remote sensing images and digital surface models, it was found that at least eight GRAs have occurred in the past few decades, with the ones since 2014 causing significant loss of glacier, rock, and moraine deposits. Climate change-induced glacier retreat, steep topography, and a recent strong earthquake were identified as influencing factors for these recent GRAs, which also resulted in the formation of a knickpoint in the Yarlung Zangbo River.
Article
Environmental Sciences
Hoonyol Lee, Heejeong Seo, Hyangsun Han, Hyeontae Ju, Joohan Lee
Summary: The study investigated two velocity anomalies in the Campbell Glacier in East Antarctica, which may be related to bed hills in the glacial valley, causing temporal variation in ice velocity. Analysis from Ice Penetrating Radar (IPR) surveys revealed the possible presence of basal water at the location of velocity anomaly A, while crevasses began to appear at velocity anomaly B.
Article
Geography, Physical
Alina Boronina, Sergey Popov, Galina Pryakhina, Antonina Chetverova, Ekaterina Ryzhova, Svetlana Grigoreva
Summary: In 2017, a catastrophic outburst flood occurred in the Larsemann Hills in East Antarctica, resulting in a large depression forming where Lake Dalk was located. A phenomenological model of depression formation was proposed, and reasons for the outburst of the lake system were specified. Mathematical modeling and field data validation were used to estimate flood severity.
JOURNAL OF GLACIOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Shuang Liu, Kaiheng Hu, Weiming Liu, Paul A. Carling
Summary: This study examines hydro-climatic changes in the Yarlung Zangbo River Basin in Tibet since the Last Glacial Maximum by combining proxy records with climate simulations and glacier reconstructions. The results show that runoff was low during the Last Glacial Maximum and Heinrich Stadial 1, due to less precipitation contribution and larger glacier coverage. Rapid deglaciation and increasing runoff between Heinrich Stadial 1 and the Bolling-Allerod interval may have led to extreme outburst flood events.
ADVANCES IN ATMOSPHERIC SCIENCES
(2022)
Article
Engineering, Environmental
Tiantian Zhang, Bin Li, Yang Gao, Haoyuan Gao, Yueping Yin
Summary: Glacier-related geohazards pose a serious threat to mountain societies. This paper provides an interdisciplinary analysis of geohazard modes, monitoring, and evolutions, as well as insights into deposit features and dynamic processes. The study reveals that the increase in ice crevasses and the temperature rise contribute to glacier retreat and the subsequent instability of slopes. Additionally, geomorphology plays a crucial role in the mobility and volume amplification of these hazards.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Water Resources
Qiule He, Xingxing Kuang, Jianxin Chen, Yinlei Hao, Yuqing Feng, Pan Wu, Chunmiao Zheng
Summary: By coupling glacier retreat model and groundwater model, this study reveals that the Jiemayangzong Glacier in the source of the Yarlung Zangbo River on the Tibetan Plateau will continuously retreat under future climate change and have significant impacts on local groundwater resources.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Environmental Sciences
Anton V. V. Terekhov, Sergei Verkulich, Alexander Borisik, Vasiliy Demidov, Uliana Prokhorova, Kseniia Romashova, Mikhail Anisimov, Olga Sidorova, Gleb Tarasov
Summary: This study presents the annual and seasonal mass-balance monitoring results of the Vestre Gronfjordbreen glacier in Svalbard from 2013/14 to 2019/20. The glacier experiences significant retreat and has negative annual mass balance values. A ground-penetrating radar survey confirms the glacier's structure and determines the total volume and cumulative mass loss. There is a weak correlation between the mass-balance values and meteorological observations.
ARCTIC ANTARCTIC AND ALPINE RESEARCH
(2022)
Article
Environmental Sciences
Peng-Bin Liang, Li-De Tian
Summary: This study estimated the ice storage of glaciers in western China by compiling ice thickness observations and comparing with the Second Chinese Glacier Inventory. They found that the method of glacier division can significantly affect the total volume estimation and emphasized the need for more accurate glacier inventory data.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2022)
Article
Geography, Physical
Laura Piho, Andreas Alexander, Maarja Kruusmaa
Summary: Information about glacier hydrology is crucial for understanding glacier and ice sheet dynamics. However, due to the extreme and hard-to-access nature of the environment, our knowledge about water pathways and pressure remains limited. In this paper, a method using sensing drifters is presented for in situ data collection in englacial channels, allowing for the reconstruction of water flow paths and pressure distribution. The validation results demonstrate the accuracy and applicability of the method. Furthermore, the method can be extended to the reconstruction of other underexplored subsurface fluid flow paths.
Article
Environmental Sciences
Jing Zhang, Li Jia, Massimo Menenti, Shaoting Ren
Summary: Monitoring glacier flow is important to understand glacier response to environmental changes in the context of global climate change. The study used Landsat-8 data to investigate glacier velocity variability in the Parlung Zangbo Basin, revealing a slight increase in glacier centerline velocity from 2017 to 2020, possibly due to increased winter-spring precipitation. Winter-spring snow accumulation might be a key driver of glacier flow in the study area.
Article
Environmental Studies
Baojuan Huai, Minghu Ding, Songtao Ai, Weijun Sun, Yetang Wang, Jiajia Gao
Summary: This study analyzes the glacial hazard occurrence and development in the Sedongpu basin of the Yarlung Zangbo River, taking the glacial debris flow blockage event in 2018 as an example. The results show that topography and climate background, as well as heavy rainfall and earthquakes, are the main factors contributing to the occurrence of glacial debris flow. The Elmer/Ice dynamic model is effective in simulating glacial surface velocity, providing valuable insights for quantitative analysis of glacial hazards.
Article
Geosciences, Multidisciplinary
Sarah F. Child, Leigh A. Stearns, C. J. van der Veen, Pedro Elosegui
Summary: Research on Byrd Glacier reveals that short-lived flow accelerations can lead to abnormally large basal crevasses near the grounding line. Airborne radar measurements and particle tracking help understand the height and formation process of these crevasses, which have an impact on both Byrd Glacier and the Ross Ice Shelf.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Qian Liang, Ninglian Wang
Summary: In this study, Synthetic Aperture Radar (SAR) images were used to extract the surface flow velocity of the Siachen Glacier. The average flow velocity of the glacier was found to be 38.25 m/year, with the highest velocity observed in upper tributaries. Seasonal patterns and mass balance calculations were also analyzed, revealing spatial heterogeneity in glacier changes.
Editorial Material
Meteorology & Atmospheric Sciences
Yaoming Ma, Weiqiang Ma, Huaguang Dai, Lei Zhang, Fanglin Sun, Jinqiang Zhang, Nan Yao, Jianan He, Zhixuan Bai, Yuejian Xuan, Yunshuai Zhang, Yuan Yuan, Chenyi Yang, Weijun Sun, Ping Zhao, Minghu Ding, Kongju Zhu, Jie Hu, Bian Bazhuga, Bai Juepingcuo, Zhuo Ma, Ren Qingnima, Suo Langwangdui, Yang Zong, Haikun Wen
Summary: The Earth summit mission 2022 is a significant scientific activity of the Second Tibetan Plateau Scientific Expedition and Research (STEP), which utilized advanced technology and methods to investigate the vertical structure and weather characteristics of Mt. Qomolangma.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Geography, Physical
Diyi Yang, Minghu Ding, Ian Allison, Xiaowei Zou, Xinyan Chen, Petra Heil, Wenqian Zhang, Lingen Bian, Cunde Xiao
Summary: This study investigated the meteorological conditions and subsurface heat conduction characteristics in inland areas of Antarctica. The findings showed decreasing trends in air temperature, humidity, and wind speed from coastal areas to inland plateau regions. The study also analyzed the optimal response time of snow temperatures and estimated the variations in subsurface heat conduction along the transect.
JOURNAL OF GLACIOLOGY
(2023)
News Item
Multidisciplinary Sciences
Sai Wang, Minghu Ding, Ge Liu, Shoudong Zhao, Wenqian Zhang, Xichen Li, Wen Chen, Cunde Xiao, Dahe Qin
Article
Meteorology & Atmospheric Sciences
Xichen Li, Xianyao Chen, Bingyi Wu, Xiao Cheng, Minghu Ding, Ruibo Lei, Di Qi, Qizhen Sun, Xiaoyu Wang, Wenli Zhong, Lei Zheng, Meijiao Xin, Xiaocen Shen, Chentao Song, Yurong Hou
Summary: In the past four decades, China has actively engaged in polar expeditions and made significant progress in understanding Arctic and Antarctic climate change. The Arctic has experienced a faster temperature increase than the global average, accompanied by a rapid decline in sea ice. Antarctic climate changes have displayed an asymmetric pattern, with the most significant changes occurring in West Antarctica and the Antarctic Peninsula. These climate changes in both polar regions are driven by anthropogenic greenhouse gas emissions and ozone loss, with tropical-polar teleconnections playing important roles. Chinese researchers have made significant contributions to the understanding of these processes.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Meteorology & Atmospheric Sciences
Cunde Xiao, Qi Zhang, Jiao Yang, Zhiheng Du, Minghu Ding, Tingfeng Dou, Binhe Luo
Summary: Arctic sea ice loss and enhanced warming have been linked to midlatitude weather and climate changes through temperature gradients connected to circulation. However, the contradictory evidence results in low confidence in the influence of Arctic warming on midlatitude climate. This study examines the relationship between autumn sea ice extent in the Barents-Kara Seas and extreme cold wave events in southern China using paleoclimate evidence. The results show that there is an anti-phase relationship between winter cold index and sea ice extent in the Barents-Kara Seas, indicating that cold winters are more likely during low sea ice extent years due to the North Atlantic Oscillation and Siberian High. It is confirmed that the recent increase in extreme cold wave events in southern China is closely related to the decline in sea ice extent in the Barents-Kara Seas, but the linkage is unstable and may be influenced by atmospheric internal variability.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Environmental Sciences
Lei Zhang, Minghu Ding, Xiangdong Zheng, Junming Chen, Jianping Guo, Lingen Bian
Summary: This study evaluates the errors and representativeness of the Atmospheric Infrared Sounder (AIRS) version 6 (v6) and version 7 (v7) temperature profiles in the Arctic region. The results show that v7 has smaller biases in the troposphere compared to v6, but the profile-averaged root mean square error (RMSE) increased in v7, particularly in winter. The accuracy of AIRS temperature retrieval is primarily influenced by surface type and cloud fraction.
Editorial Material
Multidisciplinary Sciences
Zhuoqi Chen, Lei Zheng, Baogang Zhang, Tiancheng Zhao, Karl B. Zinglersen, Minghu Ding, Wenqian Zhang, Fengming Hui, Xiao Cheng
Article
Multidisciplinary Sciences
Ziqi Ma, Jianbin Huang, Xiangdong Zhang, Yong Luo, Minghu Ding, Jun Wen, Weixin Jin, Chen Qiao, Yifu Yin
Summary: Developing a precise Arctic surface air temperature (SAT) dataset is crucial for monitoring the rapid climate change in the Arctic and improving our understanding of it. This study reconstructed a new monthly gridded Arctic SAT dataset dating back to 1979 using a deep learning method and combining data from multiple sources. This dataset represents a significant improvement in developing observational temperature datasets and has various potential applications.
Article
Meteorology & Atmospheric Sciences
Weigang Liu, Xingguo Yang, Michiel R. van den Broeke, Baojuan Huai, Diyi Yang, Dongqi Zhang, Xiang Qin, Ping Yue, Heling Wang, Minghu Ding
Summary: This study presents the cold-season glacier surface energy balance (SEB) result at high altitudes on Mt. Qomolangma based on in-situ observation from October 2007 to January 2008. The results show that strong winds and deficient clouds during the observational period led to a substantial sensible heat transport toward the glacier surface and an increase in longwave radiative loss. The clouds' shading effect surpassed its greenhouse effect and resulted in a decrease in incident solar radiation.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Editorial Material
Geosciences, Multidisciplinary
Baojuan Huai, Minghu Ding, Xichen Li
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Yueli Chen, Minghu Ding, Guo Zhang, Xingwu Duan, Chengxin Wang
Summary: As a typical fragile ecological plateau area, the risk of water erosion on the Tibetan Plateau in China continues to increase with climate change. Empirical models were established to accurately investigate the spatiotemporal evolution of rainfall erosivity. The results showed significant increasing trends in annual rainfall erosivity over the last 40 years.
Article
Meteorology & Atmospheric Sciences
Yueli Chen, Minghu Ding, Guo Zhang, Ying Wang, Jianduo Li
Summary: This study compared the performance of ERA5 precipitation data with CLDAS2.0 and CMFD precipitation data in the YZRB and found that ERA5 showed high accuracy in simulating precipitation in the complex terrain and climate of the YZRB, making it a potential reference dataset for hydrological modeling.
JOURNAL OF HYDROMETEOROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yetang Wang, Xueying Zhang, Wentao Ning, Matthew A. Lazzara, Minghu Ding, Carleen H. Reijmer, Paul C. J. P. Smeets, Paolo Grigioni, Petra Heil, Elizabeth R. Thomas, David Mikolajczyk, Lee J. Welhouse, Linda M. Keller, Zhaosheng Zhai, Yuqi Sun, Shugui Hou
Summary: This article presents a new meteorological dataset derived from records of Antarctic automatic weather stations. The dataset includes measurements of air temperature, air pressure, relative humidity, and wind speed and direction from 267 Antarctic AWSs obtained from 1980 to 2021. The aim of this dataset is to make the data easily accessible for use in local, regional, and continental studies.
EARTH SYSTEM SCIENCE DATA
(2023)
Article
Geography, Physical
Na Li, Ruibo Lei, Petra Heil, Bin Cheng, Minghu Ding, Zhongxiang Tian, Bingrui Li
Summary: This study investigates the mass balance of snow and landfast ice (LFI) in Prydz Bay using observations from sea ice mass balance buoys. The results show that the annual maximum ice thickness and snow depth were 1.59+/-0.17 m and 0.11-0.76 m, respectively. It is argued that an increased understanding of snow processes, local atmospheric and oceanic conditions, as well as coastal morphology and bathymetry, is required to improve the Antarctic LFI modeling.
Article
Meteorology & Atmospheric Sciences
Rongfeng Fan, Zhaoliang Zeng, Xin Wang, Lei Zhang, Wei Cheng, Minghu Ding
Summary: This study compares the detection capability of water vapor mixing ratio (q) and total precipitable water vapor (PWV) products of AIRS, VASS, and VIRR in Antarctica. The findings reveal that AIRS outperforms VASS and VIRR in the detection of both q and PWV.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
