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The increase in hot–dry events with a high risk of mortality in China associated with the phase transition of the Atlantic Multidecadal Oscillation

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Atmospheric and Oceanic science Letters 2025年第4期18卷

作者： Ma, Yuting Shen, Xinyong Zhao, Liang Wang, Zijia Wang, Huibin Ding, Yihui Wang, Jingsong Liu, Yanju Huang, Cunrui State Key Laboratory of Climate System Prediction and Risk Management/Key Laboratory of Meteorological Disaster Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing China State Key Laboratory of Numerical Modeling for Atmosphere Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China College of Hydrology and Water Resources Hohai University Nanjing China The Second Affiliated Hospital Guangzhou Medical University Guangzhou China National Climate Center China Meteorological Administration Beijing China Key Laboratory of Space Weather National Satellite Meteorological Center (National Center for Space Weather) China Meteorological Administration Beijing China Innovation Center for FengYun Meteorological Satellite (FYSIC) Beijing China Vanke School of Public Health Tsinghua University Beijing China

Compound extreme climate events involving multiple meteorological elements usually have a more severe impact on the environment and human health than single-element extreme events. However, the current definition of multi-element compound extreme events is proposed from meteorological and statistical perspectives, without integrating health data, making the conclusions less practical for guiding health risk prevention. This study identified the threshold for hot–dry compound extreme events with high mortality risks (HMHDs) in China, using daily mortality data and temperature–humidity data from 278 districts or counties, and explored the interdecadal change and driving mechanisms of HMHD frequency in China from 1979 to 2021. The results show a significant increase in annual HMHD frequency in China after 2000, mainly occurring in summer (June, July, August). The northwestern to western regions of China (Xinjiang, Inner Mongolia, Gansu), and from the southwestern to the areas south of the Yangtze River (Sichuan, Hubei, Hunan, Jiangxi, Fujian, Guizhou, Yunnan), experience an increase of >10 days. The authors find that the interdecadal abrupt change in HMHD frequency can be attributed to the shift of the Atlantic Multidecadal Oscillation from a negative to a positive phase by affecting the Silk Road teleconnection. 摘要目前对复合极端事件的定义主要从气象和统计学角度出发, 未能结合健康数据, 使相关研究在指导健康风险预防方面的实用性较差. 本研究利用中国死亡数据和温湿度数据, 识别了中国高死亡风险的复合极端干热事件 (HMHDs) 的阈值, 并探讨了HMHD频率的年代际变化及其驱动机制. 结果显示, 中国西北地区, 西南地区和江南地区的HMHD频率平均每年都超过10 天. 2000年后, 中国HMHD频率显著增加, 主要发生在夏季. 驱动机制分析表明, HMHD频率的年代际变化可以归因于大西洋多年代际振荡由负相位转变为正相位. 本研究可为气候变化导致的健康风险防控提供参考依据. © 2025

关键词： Atlantic Multidecadal Oscillation Hot–dry compound events Relative humidity Temperature mortality

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Survival of the magnetotactic bacterium Magnetospirillum gryphiswaldense exposed to Earth’s lower near space

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science Bulletin 2022年第13期67卷 1335-1339,M0003页

作者： Jia Liu Wensi Zhang Kuang He Li Liu Chao Wang Yuanda Jiang Shijiao Ma Jiesheng Tian Ying Li Tongwei Zhang Lanxiang Tian Fei He Greig APaterson Yong Wei Yongxin Pan Wei Lin Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China France-China Joint Laboratory for Evolution and Development of Magnetotactic Multicellular Organisms Chinese Academy of SciencesBeijing 100029China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Lab of Submarine Geosciences and Prospecting Techniques(Ministry of Education)College of Marine GeosciencesOcean University of ChinaQingdao 266100China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Electronics and Information Technology for Space Systems National Space Science CenterChinese Academy of SciencesBeijing 100190China State Key Laboratories for Agro-biotechnology College of Biological SciencesChina Agricultural UniversityBeijing 100193China Department of Earth Ocean and Ecological SciencesUniversity of LiverpoolLiverpool L697ZEUK

地球临近空间指海平面之上20~100 km高度区域,具有高辐射、低温、干燥、低气压等极端条件,是一类典型的类火星环境.研究生命在临近空间的存活机制有助于深化对火星宜居性和生命探测的认识.本研究利用自主研发的临近空间天体生物学载荷... 详细信息

地球临近空间指海平面之上20~100 km高度区域,具有高辐射、低温、干燥、低气压等极端条件,是一类典型的类火星环境.研究生命在临近空间的存活机制有助于深化对火星宜居性和生命探测的认识.本研究利用自主研发的临近空间天体生物学载荷和飞行实验平台,将趋磁细菌Magnetospirillum gryphiswaldense MSR-1带入23 km高度区域开展生物暴露实验.结果发现合成磁小体的趋磁细菌经过7小时16分钟的暴露后仍有部分细胞存活,而不合成磁小体的菌株经过暴露后没有检测到存活细胞;临近空间暴露后存活的样品与实验室对照组相比,其磁小体的数量、尺寸和岩石磁学性质等均发生变化.这些结果表明细胞内的磁小体纳米颗粒有助于趋磁细菌抵御临近空间的高辐射等极端环境,为趋磁细菌的起源和早期演化、生命适应类火星极端环境的机制等提供了新认识.鉴于趋磁细菌具有在类火星环境中生存的潜力,这些感磁微生物可以作为天体生物学研究的重要生物类群.

关键词：天体生物学极端环境极端条件生命探测趋磁细菌磁小体临近空间宜居性

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A Fusion Processing Method for Satellite Detection Data by Beidou Short Message system 12th

A Fusion Processing Method for Satellite Detection Data by B...

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12th China Satellite Navigation Conference, CSNC 2021

作者： Li, Bing Yu, Xiao Sun, Xiaojuan Hu, Yuxin Wu, Haiyan Shi, Tao Chen, Ling School of Cyber Security University of Chinese Academy of Sciences Beijing100149 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing100093 China Aerospace Information Research Institute Chinese Academy of Sciences Beijing100190 China Key Laboratory of Technology in Geo-Spatial Information Processing and Application System Chinese Academy of Sciences Beijing100190 China Beijing Institute of Tracking and Telecommunications Technology Beijing100094 China School of Electronic Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing100149 China National Space Science Center Chinese Academy of Science Beijing100190 China

ISBN: (纸本)9789811631375

With the support of Beidou terminal of short message service system, the space science satellite can transmit all-day data that are astronomical alert data such as gravitational waves and Gamma ray bursts and satellite telemetry parameters. Then Beidou message service system has become an important means for finding the space astronomical events quickly, planning the follow-up observation and monitoring the real-time health of satellite and payloads. Then the application fields of the Beidou system has expanded into space science observation and satellite emergency operation. The short message data receiving and processing in ground system has many features of near real-time and continuity which is different from the processing methods of satellite data transmitted by data channel and telemetry channel. And the multi-source satellite data of the telemetry parameters and the astronomical alert information from these three channels need to be integrated. So, the real-time processing system of satellite data based on Beidou short message transmission has great challenges. In this paper, we explored an organization method of Beidou short messages, and proposed a multi-source data fusion algorithm for the ground satellite data processing system. The data processing system with this method was designed and implemented. Applying to the ground system of the satellite named gravitational wave high-energy electromagnetic counterpart all-sky monitor, the performance analysis of improved system shows that the processing delay for important telemetry parameters and astronomical alert information is greatly shortened from average nine hours to several minutes. The Beidou short message service system shows great supports in real time observation of gamma ray bursts. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Satellites

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Design of Reusable Effectiveness Evaluation Model Framework

Design of Reusable Effectiveness Evaluation Model Framework

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Chinese Control and Decision Conference, CCDC

作者： Shuang Zhang Wei Li Shenglin Lin Ming Yang Jiahui Tong Control and Simulation Center Harbin Institute of Technology Harbin China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

In order to make the effectiveness evaluation models of the weapon equipment system universal and flexible, and adapt to different evaluation objects, a framework of effectiveness evaluation model is designed. Next a series of modular and reusable effectiveness evaluation models are proposed under the framework. Each type of evaluation model is built based on IDEF0, and the corresponding input and output of each model are designed. To further improve reusability, several models are mathematically described and model interface is designed based on XML.

关键词： Indexes Data models Data mining Analytical models Mathematical model Optimization Adaptation models

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可持续发展情景下丝绸之路沿线国家土地利用及其对陆地碳库影响

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science Bulletin 2023年第7期68卷 740-749页

作者：曹敏田雅吴凯陈旻陈玉胡雪孙中昶左丽君林键骆磊朱瑞许振赐 Temenoujka Bandrova Milan Konecny 袁文平郭华东林珲闾国年 Key Laboratory of Virtual Geographic Environment Ministry of EducationNanjing Normal UniversityNanjing 210023China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China School of Geography and Environment Jiangxi Normal UniversityNanchang 330022China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China The Key Laboratory of Urban Land Resources Monitoring and Simulation Ministry of Natural ResourcesShenzhen 518034China Sierra Nevada Research Institute University of CaliforniaMerced CA 95348USA Institute of High Performance Computing Agency for ScienceTechnology and ResearchSingapore 138632Singapore Department of Geography the University of Hong KongHong Kong 999077China Laboratory on Cartography University of ArchitectureCivil Engineering and GeodesySofia 1164Bulgaria Laboratory on Geoinformatics and Cartography Institute of GeographyMasaryk UniversityBrno 60177Czech Republic School of Atmospheric Sciences Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yat-sen UniversityZhuhai 519082China Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of EducationJiangxi Normal UniversityNanchang 330022China

可持续发展目标(SDGs)呼吁全世界共同采取行动,促进繁荣并保护地球.本研究面向SDGs构建了环境、粮食和经济等可持续发展情景,预测2020~2030年丝绸之路沿线国家的土地利用变化,并分析其对陆地碳库的影响。研究表明:未来土地利用变化及其... 详细信息

可持续发展目标(SDGs)呼吁全世界共同采取行动,促进繁荣并保护地球.本研究面向SDGs构建了环境、粮食和经济等可持续发展情景,预测2020~2030年丝绸之路沿线国家的土地利用变化,并分析其对陆地碳库的影响。研究表明:未来土地利用变化及其对陆地碳库的影响在不同情景下存在显著差异。在可持续环境情景下,林地得到了有效保护,相较于2020年中国林地碳储量增加了约0.60%;在可持续粮食情景下,耕地流失得到了缓解,尤其在南亚及东南亚地区的耕地面积呈现上升趋势:在可持续经济情景下,城市扩张速度加快,引起的碳损失量最多这项研究有助于推进丝绸之路沿线甚至全球可持续发展进程,为探寻可持续发展路径提供了科学依据。

关键词： Sustainable development goals(SDGs) Land-use projection Carbon pool Scenarios system dynamics model Cellular automata

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Enhanced Resource Recovery from Wastewater Using Electrochemical-Osmotic system with Nanofiltration Membranes

SSRN

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SSRN 2022年

作者： Wang, Chi Sun, Meng Wang, Xianze Zhang, Xuan Zhao, Yumeng Huo, Mingxin Science and Technology Innovation Center for Municipal Wastewater Treatment and Water Quality Protection Northeast Normal University Changchun130117 China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing100084 China Key Laboratory of New Membrane Materials Ministry of Industry and Information Technology School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China

Mining diverse resources from electroplating wastewater are critical for maximizing wastewater economic value and minimizing adverse environmental impacts. We have demonstrated an autonomous electrochemical-osmotic system (EOS), which can simultaneously recover copper metals, water, and electric energy from wastewater. In this study, we enhanced water production, electricity generation, and metal recovery of the EOS using polyelectrolyte multilayer nanofiltration (PMNF) membranes. Results suggested that the water/salt selectivity of the PMNF membrane increase to 25.1 L mol -1 with the increase of the number of the polyelectrolyte deposited layers to 6.0. The EOS assembled with a 1.5-layer PMNF membrane achieved a water production rate of 6.06 L m -2 h -1 and a maximum power density of 1.18 mW cm -2 by treating synthetic electroplating wastewater. Further, we clarified that the PMNF-EOS effectively inhibited the forward transport of various metal cations while also extracting freshwater, generating power, and recovering copper from electroplating wastewater. © 2022, The Authors. All rights reserved.

关键词： Wastewater treatment

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Impact of phase signal formulations on tilt-to-length coupling noise in the LISA test mass interferometer

arXiv

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arXiv 2025年

作者： Edwards, Paul Dave, Megha Weaver, Alexander Zhao, Mengyuan Fulda, Paul Mueller, Guido Wanner, Gudrun University of Florida Physics Department University of Florida Department of Physics 2001 Museum Road GainesvilleFL32611 United States Callinstr. 38 HannoverD-30167 Germany Institute for Gravitational Physics Leibniz Universität Hannover Callinstr. 38 HannoverD-30167 Germany Key Laboratory of Electronics and Information Technology for Space System National Space Science Center Chinese Academy of Sciences No.1 Nanertiao Zhongguancun Haidian district Beijing100190 China

Tilt-to-length (TTL) coupling in the Laser Interferometer space Antenna (LISA) can generate spurious displacement noise that potentially affects the measurement of gravitational wave signals. In each test mass interferometer, the coupling of misalignments with spacecraft angular jitter produces noise in the longitudinal pathlength signal. This signal comes from the phase readout combinations of an interfering measurement beam and a local reference beam at a quadrant photodetector, but various formulations exist for its calculation. Selection of this pathlength signal formulation affects the TTL coupling noise. We therefore simulated two pathlength signal candidates, the complex sum and the averaged phase, and evaluated their performance in the LISA test mass interferometer under the assumption of static alignment imperfections. All simulations were performed using three different methods with cross-checked results. We find with all three methods that the averaged phase is the choice with equal or less TTL coupling noise in four out of the five test cases. Finally, we show that the non-linear TTL contributions in the test mass interferometer to be negligible in all our test-cases, no matter which formulation of pathlength signal is chosen. © 2025, CC BY-NC-ND.

关键词： Laser interferometry

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DeePMD-kit v3: A Multiple-Backend Framework for Machine Learning Potentials

arXiv

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arXiv 2025年

作者： Zeng, Jinzhe Zhang, Duo Peng, Anyang Zhang, Xiangyu He, Sensen Wang, Yan Liu, Xinzijian Bi, Hangrui Li, Yifan Cai, Chun Zhang, Chengqian Du, Yiming Zhu, Jia-Xin Mo, Pinghui Huang, Zhengtao Zeng, Qiyu Shi, Shaochen Qin, Xuejian Yu, Zhaoxi Luo, Chenxing Ding, Ye Liu, Yun-Pei Shi, Ruosong Wang, Zhenyu Bore, Sigbjørn Løland Chang, Junhan Deng, Zhe Ding, Zhaohan Han, Siyuan Jiang, Wanrun Ke, Guolin Liu, Zhaoqing Lu, Denghui Muraoka, Koki Oliaei, Hananeh Singh, Anurag Kumar Que, Haohui Xu, Weihong Xu, Zhangmancang Zhuang, Yong-Bin Dai, Jiayu Giese, Timothy J. Jia, Weile Xu, Ben York, Darrin M. Zhang, Linfeng Wang, Han School of Artificial Intelligence and Data Science Unversity of Science and Technology of China Hefei China AI for Science Institute Beijing100080 China DP Technology Beijing100080 China Academy for Advanced Interdisciplinary Studies Peking University Beijing100871 China State Key Lab of Processors Institute of Computing Technology Chinese Academy of Sciences Beijing100871 China University of Chinese Academy of Sciences Beijing China Baidu Inc. Beijing China Department of Computer Science University of Toronto TorontoON Canada Department of Chemistry Princeton University PrincetonNJ08540 United States University of Chinese Academy of Sciences Beijing100871 China State Key Laboratory of Physical Chemistry of Solid Surfaces iChEM College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 China College of Integrated Circuits Hunan University Changsha410082 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Smart Materials and Device Integration School of Material Science and Engineering Wuhan University of Technology Wuhan430070 China College of Science National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Extreme Matter and Applications National University of Defense Technology Changsha410073 China ByteDance Research Beijing100098 China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing100049 China Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education College of Chemistry Beijing Normal University Beijing100875 China Department of Geosciences Princeton University PrincetonNJ08544 United States Department of Applied Physics and Applied Mathematics Columbia University New YorkNY10027 United States IKKEM Fujian Xiamen361005 China Graduate

In recent years, machine learning potentials (MLPs) have become indispensable tools in physics, chemistry, and materials science, driving the development of software packages for molecular dynamics (MD) simulations and related applications. These packages, typically built on specific machine learning frameworks such as TensorFlow, PyTorch, or JAX, face integration challenges when advanced applications demand communication across different frameworks. The previous TensorFlow-based implementation of DeePMD-kit exemplified these limitations. In this work, we introduce DeePMD-kit version 3, a significant update featuring a multi-backend framework that supports TensorFlow, PyTorch, JAX, and PaddlePaddle backends, and demonstrate the versatility of this architecture through the integration of other MLPs packages and of Differentiable Molecular Force Field. This architecture allows seamless backend switching with minimal modifications, enabling users and developers to integrate DeePMD-kit with other packages using different machine learning frameworks. This innovation facilitates the development of more complex and interoperable workflows, paving the way for broader applications of MLPs in scientific research. Copyright © 2025, The Authors. All rights reserved.

关键词： Molecular dynamics

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Research on Integration Framework and Service Adaptation technology of space system simulation Test-bed

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Journal of Physics: Conference Series 2021年第1期2133卷

作者： Desheng Liu Qing Chang Science and Technology on Complex Electronic System Simulation Laboratory Space Engineering University Beijing China

Aiming at the requirements of space system simulation test-bed in heterogeneous integration and co-simulation, the support capability of test-bed integration framework is analysed. A space system simulation test-bed integration framework based on bridging adaptation service is constructed, and adaptation services such as protocol adaptation, information publication, information subscription and service control for service oriented architecture are designed and implemented, which provide integration capability and co-simulation management capability for heterogeneous systems, models and components of space system simulation test-bed.

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The effect of hydrostatic pressure on the nitrogen removal potential at the sediment water interface of reservoirs

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Zhongguo Huanjing Kexue/China Environmental science 2024年第4期44卷 2119-2129页

作者： Li, Yu-Mei Chen, Kai He, Li-Xin Chai, Bei-Bei Zhuo, Tian-Yu Yu, Ke-Hong Zhang, Jin-Nan Lei, Xiao-Hui School of Water Conservancy and Hydroelectric Power Hebei University of Engineering Handan056038 China School of Water Conservancy and Hydroelectric Hebei University of Engineering Collaborative Innovation Center for Intelligent Regulation and Comprehensive Management of Water Resources Handan056038 China Hebei Key Laboratory of Intelligent Water Conservancy Handan056038 China Handan Key Laboratory of Low-Carbon Energy Handan056038 China Tianjin Water Group Binhai Water Co. Ltd. Tianjin300308 China School of Energy and Environmental Engineering Hebei University of Engineering Handan056038 China School of Architecture and Civil Engineering Xi’an University of Science and Technology Xi′an710054 China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research Beijing100038 China

The effects of different hydrostatic conditions (atmospheric pressure, 0.2MPa, 0.5MPa and 0.7MPa) on microbial community structure, nitrogen cycling function genes and metabolic pathways at the sediment-water interface of reservoir were studied through microcosmic simulation experiments and metagenomics. The results showed that the number of microbial species involved in nitrogen cycling increased first to 1227 and then decreased to 1199 with the increase of hydrostatic pressure. The relative abundances of archaea and fungi increased by 0.002% and 0.0006% with the increase of hydrostatic pressure, while the proportion of bacteria decreased. High hydrostatic pressure fostered closer ecological network connections, intricate interspecific interactions, and enhanced system stability compared to low pressure. Furthermore, increased hydrostatic pressure facilitated denitrification and repressed dissimilatory nitrate reduction by augmenting the abundance of functional genes such as nxrB and narH, alongside the participating microorganism abundance. Moreover, piezophilic taxa (e.g., Proteobacteria, Chloroflexi, Bacteroidetes) and genes (e.g., ompH, asd) were identified among nitrogen-cycling microorganisms, with a predominant presence in Proteobacteria. Their abundance initially grew and then declined with rising pressure. Hydrostatic pressure can improve the nitrogen removal potential of reservoir sediments by altering the microbial population structure, related functional gene abundance, and metabolic pathways involved in the nitrogen cycle at the sediment-water interface, thereby mitigating reservoir eutrophication. © 2024 Chinese Society for Environmental sciences. All rights reserved.

关键词： Microorganisms

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