Article
Environmental Sciences
Xuewei Fang, Anqi Wang, Shihua Lyu, Klaus Fraedrich
Summary: This study compared the spatial and temporal variations of freezing/thawing indices on the Qinghai-Tibet Plateau (QTP) using numerical outputs from the Community Land Surface Model version 4.5. The results showed a decrease in permafrost area and a corresponding decrease in freezing indices, while thawing indices increased. The changes in thermal regimes in frozen ground were influenced by both air warming and increased precipitation, with the latter becoming the dominant factor in the 2000s.
Article
Biodiversity Conservation
Tonghua Wu, Xiaofan Zhu, Pengling Wang, Saruulzaya Adiya, Dashtseren Avirmed, Battogtokh Dorjgotov, Ren Li, Xiaodong Wu, Peiqing Lou
Summary: The QTP and Mongolia have experienced warming trends in air temperature and freezing/thawing index, but the seasonality and spatial distribution of the warming differ.
ECOLOGICAL INDICATORS
(2022)
Article
Agronomy
Huai Chen, Xinwei Liu, Dan Xue, Dan Zhu, Wei Zhan, Wei Li, Ning Wu, Gang Yang
Summary: The research found that methane emissions from alpine peatlands are mainly influenced by thawing periods, with warmer and longer thawing periods having a greater impact on the annual methane budget. Daily mean emissions were highest during thawing periods and lowest during frozen periods.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Environmental Sciences
Guo Lin-mao, Chang Juan, Xu Hong-liang, Sun Wen-jun
Summary: The study found that in the Fenghuoshan area of the Qinghai-Tibet Plateau, an increase in leaf area index (LAI) of vegetation leads to an increase in sensible heat, latent heat, and net radiation, while decreasing ground heat flux. Additionally, vegetation transpiration may have a negative feedback effect on the volumetric unfrozen water content in the underlying permafrost.
JOURNAL OF MOUNTAIN SCIENCE
(2021)
Article
Environmental Sciences
Xingwen Fan, Yanhe Wang, Fujun Niu, Wenjiao Li, Xuyang Wu, Zekun Ding, Wenlong Pang, Zhanju Lin
Summary: This study analyzed the environmental characteristics of high ice-content permafrost sites on the Qinghai-Tibetan Plateau. The results showed that temperature, precipitation, soil moisture, geomorphology, and soil composition are important factors influencing the distribution of high ice-content permafrost. The study provides a foundation for understanding the environmental changes in these areas and modeling the distribution of ground ice.
Article
Environmental Sciences
Xingwen Fan, Zhanju Lin, Fujun Niu, Miaomiao Yao, Aiyu Lan, Wenjiao Li
Summary: The study compares and analyzes the differences in surface heat exchange characteristics of different slope aspects in the permafrost region of Gu Mountain in the Beiluhe Basin. The study simulated the air-ground heat transfer process and corrected the simulation results using the Bowen ratio correction method. The results show that slope aspect has an impact on net radiation energy and soil heat flux.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Dongsheng Zhao, Xuan Gao, Yi Yang
Summary: The study revealed that the start of freezing period on the Qinghai-Tibetan Plateau is increasing, while the end is decreasing, leading to a shorter overall length. These changes mainly occur in the southern region of the plateau and are closely related to elevation.
THEORETICAL AND APPLIED CLIMATOLOGY
(2021)
Article
Environmental Sciences
Lei Liu, Qianlai Zhuang, Dongsheng Zhao, Du Zheng, Dan Kou, Yuanhe Yang
Summary: Permafrost degradation in the Qinghai-Tibetan Plateau has significant impacts on carbon and nitrogen cycling, resulting in carbon release and affecting the regional carbon storage. However, when considering climate change, permafrost regions are projected to become stronger carbon sinks in the 21st century.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Yongjie Pan, Xia Li, Danyun Wang, Suosuo Li, Lijuan Wen
Summary: This study investigates the effect of land use and land cover uncertainty on permafrost simulation in the Tibetan Plateau. The results show that land cover has a greater impact on soil temperature simulations in regions with greater land use inconsistency. It is important to increase the model plant function types and carefully select land use and land cover products in order to improve the simulation performance of land-surface models in permafrost regions.
Article
Environmental Sciences
Hongqin Li, Fawei Zhang, Jiexia Li, Xiaowei Guo, Huakun Zhou, Yingnian Li
Summary: Discrete extreme heat events have a significant impact on grassland ecosystems, with heat fluxes and CO2 fluxes showing different responses. Latent heat flux increased significantly during periods of dry and hot weather. Changes in heat flux were determined by changes in solar radiation, while CO2 fluxes were more strongly influenced by exceptional heat during extreme wet or dry events.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Naixin Cui, Tong Wu, Yi-Chen Wang, Huiting Zou, Jan Christoph Axmacher, Weiguo Sang, Luo Guo
Summary: This study focuses on the influence of Buddhist monasteries on land use/cover change (LUCC) in the Sanjiangyuan region of the Qinghai-Tibetan Plateau. The findings show that the presence of monasteries is highly correlated with the preservation of natural ecosystems, particularly grasslands and forests. These results strongly support the role of Buddhist culture and its physical institutions in achieving desired landscape conservation outcomes.
Article
Environmental Sciences
Junhui Che, Ping Zhao
Summary: The study reveals diurnal and west-east discrepancies in the convective boundary layer (CBL) and neutral boundary layer (NBL) heights over the Tibetan Plateau, with significant differences in amplitude of diurnal variation and persistent time of development between the eastern and western regions. Factors influencing the atmospheric boundary layer (ABL) features vary, showing a complex pattern across the plateau region.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Review
Environmental Sciences
Miaogen Shen, Shiping Wang, Nan Jiang, Jianping Sun, Ruyin Cao, Xiaofang Ling, Bo Fang, Lei Zhang, Lihao Zhang, Xiyan Xu, Wangwang Lv, Baolin Li, Qingling Sun, Fandong Meng, Yuhao Jiang, Tsechoe Dorji, Yongshuo Fu, Amy Iler, Yann Vitasse, Heidi Steltzer, Zhenming Ji, Wenwu Zhao, Shilong Piao, Bojie Fu
Summary: Warming temperatures and shifting precipitation patterns on the Qinghai-Tibetan Plateau are causing changes in vegetation phenology, with the start of the growing season advancing and the end of season delaying. These changes could impact land surface and atmospheric processes, species interactions, and regional climate patterns.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
Zhijian Zhao, Hideyuki Tonooka
Summary: This study introduces a new model (TLZ model) for evaluating permafrost accuracy by combining land surface and soil temperature data with precipitation-evapotranspiration factors. Successfully applied to the Qinghai-Tibetan Plateau, the TLZ model enables a more detailed analysis of permafrost in other regions.
Article
Plant Sciences
Xia Hu, Zhi-Guang Yang
Summary: Due to ongoing climate change, permafrost collapse has become widely distributed across the Qinghai-Tibet Plateau (QTP). This study evaluated the changes in soil microbial composition at different stages of permafrost collapse. The results showed that permafrost collapse stages affected the soil microbial communities, with significant differences in microbial abundance and biomass. Soil physicochemical properties, particularly pH and soil water content, were identified as the main factors influencing the changes in microbial communities after permafrost collapse.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2023)
Article
Geography, Physical
Lingxiao Wang, Lin Zhao, Huayun Zhou, Shibo Liu, Guojie Hu, Zhibin Li, Chong Wang, Jianting Zhao
Summary: This study analyzed ground surface deformation and observed temperature and moisture data to investigate the thawing process of ice-rich permafrost. The results showed that long-term subsidence velocity is a reliable indicator of ground ice melting, and the melting of ice-poor permafrost does not result in significant subsidence. The study also found that geomorphological conditions affect the deformation velocity.
PERMAFROST AND PERIGLACIAL PROCESSES
(2023)
Article
Environmental Sciences
Shenning Wang, Ren Li, Tonghua Wu, Lin Zhao, Xiaodong Wu, Guojie Hu, Jimin Yao, Junjie Ma, Wenhao Liu, Yongliang Jiao, Yao Xiao, Shuhua Yang, Jianzong Shi, Yongping Qiao
Summary: In this study, the soil temperature and moisture of the active layers in the permafrost regions of the Qinghai-Tibet Plateau were simulated using the community land model version 5.0. The soil enthalpy was analyzed to estimate the soil energy state and understand the energy changes during freezing and thawing. The results showed that soil enthalpy had significant seasonal variations, accurately reflecting the freezing and thawing processes. The change in soil enthalpy was closely related to the thawing depth of the active layer and could be expressed as an exponential relationship.
Article
Environmental Sciences
Mengdi Jiao, Lin Zhao, Chong Wang, Guojie Hu, Yan Li, Jianting Zhao, Defu Zou, Zanpin Xing, Yongping Qiao, Guangyue Liu, Erji Du, Minxuan Xiao, Yingxu Hou
Summary: Soil temperature is crucial for the state and degradation of permafrost. The temperature at depths of 10 cm and 50 cm in the active layer affects surface water cycles, vegetation, and can be used for permafrost models. However, there are uncertainties in soil temperature data in the permafrost region of the Qinghai-Tibet Plateau due to observation limitations. This study evaluated and calibrated four soil temperature datasets, finding different uncertainties among the reanalysis data. GLDAS-Noah had the smallest bias. The corrected GLDAS-Noah data showed improved accuracy, and the warming rates at 10 cm and 50 cm depths were analyzed.
Article
Environmental Sciences
Yanzhong Li, Jiacheng Zhuang, Peng Bai, Wenjun Yu, Lin Zhao, Manjie Huang, Yincong Xing
Summary: Remotely sensed precipitation estimates (RSPEs) are crucial in monitoring drought in ungauged or sparsely gauged areas. This study evaluated the performance of three long-term RSPEs (PERSIANN, CHIRPS, and MSWEP) in capturing meteorological drought variations across China. Results showed that the RSPEs generally captured the spatial patterns and trends of in situ observational precipitation data. However, there were skill divergences in capturing the drought characteristics among the different basins. The findings underscore the importance of using multiple RSPEs for drought monitoring.
Review
Chemistry, Multidisciplinary
Rui Liu, Shuying Zang, Lin Zhao, Chunlei Wang, Boxiong Zhang, Xiaodong Wu
Summary: Discussing the development and shrinkage process of glaciers is important for understanding regional environmental evolution and predicting global changes. However, little is known about the developmental and retreat processes of mountain glaciers in the East Asian Monsoon region during the late Quaternary. This study utilized the latest glacial data from various regions impacted by the East Asian Monsoon to analyze the influence of monsoonal circulation patterns on the development of glaciers.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Zan -Pin Xing, Lin Zhao, Lei Fan, Guo-Jie Hu, De-Fu Zou, Chong Wang, Shu-Ci Liu, Er-Ji Du, Yao Xiao, Ren LI, Guang-Yue Liu, Yong-Ping Qiao, Jian-Zong Shi
Summary: Numerous studies have been conducted to evaluate and project permafrost changes based on CMIP datasets. However, the lack of verified data has led to over-projection of permafrost changes in CMIP3 and CMIP5. Moreover, future permafrost changes in CMIP6, especially on the Qinghai-Tibet Plateau, remain unknown. To address this, the study evaluated and calibrated monthly ground surface temperature (GST) based on in situ measurements, and found that the calibrated GST performed better than the CMIP6 models. The reconstructed GST data series could be used to simulate long-term permafrost temperature over the Qinghai-Tibet Plateau. Rating: 7/10
ADVANCES IN CLIMATE CHANGE RESEARCH
(2023)
Article
Agronomy
Junjie Ma, Ren Li, Hongchao Liu, Zhongwei Huang, Tonghua Wu, Xiaodong Wu, Lin Zhao, Guojie Hu, Yao Xiao, Yongliang Jiao, Wenhao Liu, Shenning Wang, Jianzong Shi, Yongping Qiao
Summary: Based on observations in the permafrost regions of Qinghai-Tibet Plateau, this study emphasizes the importance of soil property data for the accuracy of CLM5.0 model, and demonstrates the significant improvements in simulating surface energy fluxes and soil temperature by optimizing the thermal roughness length and dry surface layer schemes.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Cheng Yang, Tonghua Wu, Guojie Hu, Xiaofan Zhu, Jimin Yao, Ren Li, Lin Zhao, Yinghui Zhang
Summary: This study proposes two methods, the combination method (CM) and the sine method (SM), for estimating the daily average ground surface soil heat flux (G0_daily) over the Qinghai-Tibet Plateau (QTP). The CM estimates the instantaneous surface soil heat flux (G0_ins) at multiple times per day and then calculates G0_daily. The SM simulates G0_daily by estimating G0_ins during satellite transit based on diurnal variations in sinusoidal curves under clear-sky conditions. The CM shows better performance than the SM in terms of accuracy and applicability.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Guojie Hu, Lin Zhao, Ren Li, Hotaek Park, Xiaodong Wu, Youqi Su, Georg Guggenberger, Tonghua Wu, Defu Zou, Xiaofan Zhu, Wenxin Zhang, Yifan Wu, Junming Hao
Summary: Most studies have focused on the mechanism of changes in frozen soil and the contribution of climate change, hydrological processes, and ecosystems in cold regions. Although there have been improvements in simulating water and heat transfer processes in cold regions, differences still exist among models and parameterizations due to the lack of observations and understanding. Further research is needed to enhance the accuracy of parameterization and improve the understanding of water and heat transfer processes in frozen soil.
Article
Multidisciplinary Sciences
Ding Li, Xiaoyuan Li, Shifang Li, Mengmeng Qi, Xiaowei Sun, Guojie Hu
Summary: This study provides preliminary evidence that long-term differentially expressed genes lead to subtle changes in disease pathology, and offers new ideas for precise analysis of pathomics and combined analysis of pathomics and genomics.
Article
Environmental Sciences
Qin Jiang, Zhiguang Tang, Linghua Zhou, Guojie Hu, Gang Deng, Meifeng Xu, Guoqing Sang
Summary: Accurate and timely acquisition of paddy rice cropping intensity and spatial distribution is crucial for monitoring growth, predicting yields, and ensuring food security. However, obtaining accurate information on rice cultivation based on optical time series images is challenging due to the cloudy and rainy climate in southern China. To address this problem, a method is developed to identify key phenological periods of paddy rice and determine optimal features for high-precision mapping. The results demonstrate the potential of the method for distinguishing mixed rice-cropping systems and improving rice production in subtropical regions.
Article
Environmental Sciences
Lingxiao Wang, Lin Zhao, Huayun Zhou, Shibo Liu, Guangyue Liu, Defu Zou, Erji Du, Guojie Hu, Chong Wang
Summary: This study used remote sensing and SAR techniques to monitor terrain deformation in the source region of the Yangtze River, assess the release of ground ice meltwater, and evaluate water storage in the active layer. The results indicate widespread ground ice melting in the region, but the water release rate is relatively small. The findings provide a data basis for understanding the impact of permafrost thawing on the water cycle in the region.
WATER RESOURCES RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
Vittal Hari, Oldrich Rakovec, Wei Zhang, Akash Koppa, Matthew Collins, Rohini Kumar
Summary: This study reveals a significant association between the Atlantic Meridional Mode (AMM) and temperature variability in the eastern European region. Positive AMM phase leads to a significant increase in temperature, while negative phase has the opposite effect. The AMM modulates the temperature through planetary-scale Rossby waves and anomalous anticyclone circulation.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Fang Cao, Yi-Xuan Zhang, Yan-Lin Zhang, Wen-Huai Song, Yu-Xian Zhang, Yu-Chi Lin, Chaman Gul, Md. Mozammel Haque
Summary: This study investigates the influences of continental emissions on marine aerosols in the Yellow Sea and Bohai Sea of China. The results show that biomass burning is the major contributor to organic aerosols in these marine atmospheres.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Chenxi Liao, Wenhua Gao, Lanzhi Tang, Chengyin Li
Summary: Based on ERA5 data, this study analyzed the characteristics of four hydrometeors and their relationship with precipitation intensity in central eastern China and the northwest Pacific Ocean. The results show that stratiform precipitation is dominated by ice processes, while convective precipitation has comparable contributions from water and ice processes.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Hsiang-Yu Huang, Sheng-Hsiang Wang, William K. M. Lau, Shih-Yu Simon Wang, Arlindo M. da Silva
Summary: This study presents a diagnostic analysis of the interannual variation of regional climate and its impact on biomass burning aerosol emissions in peninsular Southeast Asia (PSEA). It identifies four climatic factors governing the emission and transport of PSEA biomass burning aerosols and reveals a significant correlation with the El Nin similar to o-Southern Oscillation (ENSO). The results contribute to a better understanding and improved model simulations of aerosol-climate interactions in South and Southeast Asian monsoon regions.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Deniz H. Diren-Ustuen, Yurdanur S. Unal, Simge Irem Bilgen, Cemre Yuruk Sonuc, Sahar Sodoudi, Caner Guney, Ahmet Ozgur Dogru, Selahattin Incecik
Summary: This is the first comprehensive study to examine how urbanization affects the microclimate of Istanbul using the urban climate model MUKLIMO_3. The findings suggest that changing the albedo of roofs and implementing green-roofs can significantly reduce air temperatures in urban areas.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Yetong Li, Yan Xia, Fei Xie, Yingying Yan
Summary: Surface ozone, a major air pollutant, is influenced by stratosphere-troposphere exchange (STE) which contributes to both the decrease and increase of surface ozone in the Southern and Northern Hemispheres, respectively. Additionally, global warming is expected to worsen surface ozone pollution in the future.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Na Li, Ping Zhao, Changyan Zhou
Summary: In this study, the daily sensible and latent heat fluxes in the Tibetan Plateau are estimated using the maximum entropy production model. The results show good performance of the model and reveal the spatial distribution and trends of surface heat fluxes in the region.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Wenqing Lin, Huopo Chen, Weiqi Wang, Dawei Zhang, Fan Wang, Wuxia Bi
Summary: It is found in this study that anthropogenic activities may significantly contribute to the decrease in snowfall days, light snowfall, and light snowfall days across Eurasia, with greenhouse gas emissions being the main driver. However, detection of human influence is challenging for intense snowfall.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Chongxun Mo, Xingbi Lei, Xixi Mo, Ruli Ruan, Gang Tang, Lingguang Li, Guikai Sun, Changhao Jiang
Summary: Reliable precipitation information is crucial for scientific and operational applications. Open-access gridded precipitation products (OGPPs) are important sources due to their continuous spatiotemporal coverage. This study proposes a methodology to comprehensively compare the accuracies and stabilities of ten different OGPPs, particularly in mountainous basins. The results show high accuracy but unstable performance of all OGPPs, with multi-source fusion-type products offering better stability and accuracy. Multi-source weighted-ensemble precipitation and climate prediction center morphing method products exhibit the best comprehensive performance.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Jingzhuo Wang, Hanbin Zhang, Jing Chen, Guo Deng, Yu Xia
Summary: In this study, a new scale-blending technique was proposed to evaluate the impact of multiscale initial perturbations on the CMA-CPEPS. The results showed that the blended scheme improved the dispersion of dynamical variables and increased the ensemble spread of precipitation, leading to reduced forecast error.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Ziyi Song, Botao Zhou, Xinping Xu, Zhicong Yin
Summary: This study, based on reanalysis data from 1980 to 2019, reveals that the relationship between autumn sea ice concentration in the Barents-Kara Seas (BKSIC) and subsequent winter North Atlantic Oscillation (NAO) underwent an interdecadal weakening in the early 1990s. The weakening can be attributed to the decrease in the interannual variability of BKSIC, which leads to a discrepancy in the tropospheric warming. In the former period (1980-1993), the decrease in autumn BKSIC enhances tropospheric warming and weakens the circumpolar westerly, resulting in a negative NAO phase. However, in the latter period (1994-2019), the smaller interannual variability of BKSIC weakens its influence on the tropospheric temperature, diluting the relationship with the subsequent winter NAO.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Wogu Zhong, Zhiwei Wu
Summary: Significant phase shifts in winter surface air temperature (SAT) anomalies have occurred in East Asia in recent years, leading to detrimental effects on socio-economic activities. In this study, the fourth principal mode of month-to-month SAT variations over EA in winter was identified, representing subseasonal SAT reversals over the mid-high latitudes of EA during late winter. The formation of this mode is accompanied by stratospheric temperature anomalies over eastern Siberia-Alaska in January.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Weiqian Ji, Leiku Yang, Xinyao Tian, Muhammad Bilal, Xin Pei, Yu Zheng, Xiaofeng Lu, Xiaoqian Cheng
Summary: This study systematically evaluated the AOD products of the DB and MAIAC algorithms based on MODIS over bright surfaces, and investigated the underestimation of AOD affected by various factors. The results indicated that the MAIAC products performed better than DB, and the C6.1 MAIAC showed slight improvement compared to C6.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Tao Wang, Xiaohua Gou, Xuejia Wang, Hongwen Liu, Fei Xie
Summary: This study finds that the meridional position of subtropical jet anomalies has shifted equatorward in both the Northern Hemisphere and Southern Hemisphere since the 1960s due to the influence of ENSO. The changes in tropical SST anomalies associated with ENSO contribute to this equatorward shift.
ATMOSPHERIC RESEARCH
(2024)
Article
Meteorology & Atmospheric Sciences
Alireza Ghaderi Bafti, Arman Ahmadi, Ali Abbasi, Hamid Kamangir, Sadegh Jamali, Hossein Hashemi
Summary: Actual evapotranspiration (ETa) plays a crucial role in the water and energy cycles of the earth. This study develops an automated deep learning model for accurate estimation of ETa using image processing, architectural design, and hyper-parameter tuning. The proposed model shows promising results in different climatic regions, highlighting its potential for enhanced atmospheric research.
ATMOSPHERIC RESEARCH
(2024)