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Local Climate Change Induced by Urbanization on a South china Sea Island

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Journal of Tropical Meteorology 2024年第1期30卷 11-19页

作者：郝宇李磊陈柏纬孙伟戴永久 School of Atmospheric Sciences Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yatsen UniversityZhuhaiGuangdong 519082 China guangdong Provincial Observation and Research Station for Climate environment and Air Quality Change in the Pearl River Estuary ZhuhaiGuangdong 519082 China Key Laboratory of Tropical Atmosphere-Ocean System Ministry of EducationSun Yat-sen UniversityZhuhaiGuangdong 519082 China guangdong Provincial Marine Meteorology Science Data center Guangzhou 510640 China Hong Kong Observatory KowloonHongkong 999077 China Meteorological Bureau of Sansha City SanshaHainan 573199 China

The South china Sea is a hotspot for regional climate *** the past 40 years,considerable improvement has been made in the development and utilization of the islands in the South china Sea,leading to a substantial change in the land-use of the ***,research on the impact of human development on the local climate of these islands is *** study analyzed the characteristics of local climate changes on the islands in the South china Sea based on data from the Yongxing Island Observation Station and ERA5 ***,the influence of urbanization on the local climate of the South china Sea islands was explored in this *** findings revealed that the 10-year average temperature in Yongxing Island increased by approximately 1.11℃from 1961 to 2020,and the contribution of island development and urbanization to the local warming rate over 60 years was approximately 36.2%.The linear increasing trend of the annual hot days from 1961–2020 was approximately 14.84 days per *** diurnal temperature range exhibited an increasing trend of 0.05℃per decade,whereas the number of cold days decreased by 1.06days per *** rapid increase in construction on Yongxing Island from 2005 to 2021 led to a decrease in observed surface wind speed by 0.32 m s^(-1)per ***,the number of days with strong winds decreased,whereas the number of days with weak winds ***,relative humidity exhibited a rapid decline from 2001 to 2016 and then *** study also found substantial differences between the ERA5 re-analysis and observation data,particularly in wind speed and relative humidity,indicating that the use of re-analysis data for climate resource assessment and climate change evaluation on island areas may not be feasible.

关键词： local climate climate change Yongxing Island a South china Sea island climate change induced by urbanization

蒙阴金刚石的形态形貌特征及其对深部熔流体性质和活动的指示

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地球科学进展 2024年第6期39卷 602-615页

作者：丁永康梁伟章丘志力邓小芹孙媛马瑛孙成阳陆太进中山大学地球科学与工程学院广东珠海519080 广东省科学院广东广州510070 桂林理工大学材料科学与工程学院广西桂林541004 国检中心深圳珠宝检验实验室有限公司广东深圳518020 中国地质大学(北京)珠宝学院北京100083 自然资源部珠宝玉石首饰管理中心北京研究所北京100013

金刚石在金伯利岩浆捕虏前的地幔环境及后续岩浆运移过程中熔流体的共同熔/溶蚀作用下,会产生复杂的晶体形态和表面形貌,这些形态形貌学的表观特征在一定程度上反映了地幔及金伯利岩浆运移过程中熔流体的不同性质。尝试通过对蒙阴金刚... 详细信息

金刚石在金伯利岩浆捕虏前的地幔环境及后续岩浆运移过程中熔流体的共同熔/溶蚀作用下,会产生复杂的晶体形态和表面形貌,这些形态形貌学的表观特征在一定程度上反映了地幔及金伯利岩浆运移过程中熔流体的不同性质。尝试通过对蒙阴金刚石的形态及其形貌学特征进行分析,结合国际大量模拟地幔及金伯利岩温压和化学环境条件下天然金刚石的熔/溶蚀实验的相关成果,对蒙阴金刚石所体现的地幔及金伯利岩熔流体活动的性质和特点进行讨论,得到以下几点认识:①蒙阴金刚石的地幔熔体熔蚀形态及形貌特征以低程度熔蚀的“八面体+三角/锯齿状薄层+联合凹坑/深蚀坑”的组合为主,严重熔蚀的“十二面体+深蚀坑”组合次之,结合统计分析,这在一定程度上暗示了华北克拉通古老岩石圈地幔所经历的小规模、低程度的橄榄岩—熔体反应,熔体性质为相对富CO_(2)贫H_(2)O的含碳酸盐熔体;②蒙阴3个金伯利岩矿带的金刚石溶蚀形态比例指示了其岩浆流体活动性具有一定差异,具有高比例溶蚀形态金刚石的常马庄矿带岩浆流体活动相对坡里和西裕矿带更强;③蒙阴金刚石岩浆流体溶蚀的形态及形貌以“四六面体+浅凹陷+溶蚀凹雕”组合为主,且大多数样品都表现出岩浆流体低程度溶蚀的叠加形貌,另外,所有浅的、独立的三角凹坑均为平底和具有截角的倒三角凹坑,未见特殊类型,以上特征均与浅成金伯利岩释放的富H_(2)O贫CO_(2)流体相关。上述结果表明,即使在比较有限的区域内,金刚石所记录的地幔及金伯利岩浆熔流体活动过程也存在不均一性,其形态及形貌特征可以作为研究地幔熔体及金伯利岩浆流体活动的一个重要参考,也从某些角度揭示出很多金刚石矿区不同岩体、矿带产出的金刚石的品质和品位存在明显差异的内在原因。

关键词：金刚石金伯利岩形态及形貌学金刚石成矿

Association between Long-Term Exposure to PM_(2.5) Inorganic Chemical Compositions and Cardiopulmonary Mortality: A 22-Year Cohort Study in Northern china

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environment & Health 2024年第8期2卷 530-540页

作者： Hongyue sun Xi Chen Wenzhong Huang Jing Wei Xueli Yang Anqi Shan Liwen Zhang Honglu Zhang Jiayu He Chengjie Pan Jingjing Li Jing Wu Tong Wang Jie Chen Yuming Guo Shilu Tong Guanghui Dong Nai-Jun Tang Department of Occupational and environmental Health School of Public HealthTianjin Medical UniversityTianjin 300070China Tianjin Key Laboratory of environment Nutrition and Public Health Tianjin Medical UniversityTianjin 300070China center for International Collaborative Research on environment Nutrition and Public Health Tianjin 300070China Key Laboratory of Prevention and Control of Major Diseases in the Population Ministry of EducationTianjin Medical UniversityTianjin 300070China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourne 3004Australia Department of Atmospheric and Oceanic Science Earth System Science Interdisciplinary CenterUniversity of MarylandCollege ParkMaryland 20740United States Shandong Provincial Hospital Affiliated to Shandong First Medical university Ji nan 250021ShandongChina National center for Chronic and Noncommunicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 100050China Department of Epidemiology and Biostatistics School of Public HealthTianjin Medical UniversityTianjin 300070China School of Public Health Shanxi Medical UniversityTaiyuan 030001China School of Public Health and Social Work Queensland University of TechnologyBrisbane 4072QLD Australia National Institute of environmental Health Chinese Centre for Disease Control and PreventionBeijing 100021China guangdong Provincial Engineering Technology Research center of environmental Pollution and Health Risk Assessment Department of Occupational and Environmental HealthSchool of Public HealthSun Yat-sen UniversityGuangzhou 510080China

Particulate matter with diameters≤2.5μm(PM_(2.5))has been identified as a significant air pollutant contributing to premature ***,the specific compositions within PM_(2.5) that play the most crucial role remain unclear,especially in areas with high pollution *** study aims to investigate the individual and joint mortality risks associated with PM_(2.5) inorganic chemical compositions and identify primary *** 1998,we conducted a prospective cohort study in four northern Chinese cities(Tianjin,Shenyang,Taiyuan,and Rizhao).Satellite-based machine learning models calculated PM_(2.5) inorganic chemical compositions,including sulfate(SO_(4)^(2–)),nitrate(NO_(3)^(–)),ammonium(NH_(4)^(+)),and chloride(Cl^(-)).A time-varying Cox proportional hazards model was applied to analyze associations between these compositions and cardiorespiratory mortality,encompassing nonaccidental causes,cardiovascular diseases(CVDs),nonmalignant respiratory diseases(RDs),and lung *** quantile-based g-computation model evaluated joint exposure effects and relative contributions of the *** analysis was used to identify vulnerable *** 785,807 person-years of follow-up,5812(15.5%)deaths occurred from nonaccidental causes,including 2932(7.8%)from all CVDs,479(1.3%)from nonmalignant RDs,and 552(1.4%)from lung *** interquartile range(IQR)increase in SO_(4)^(2–)was associated with mortality from nonaccidental causes(hazard ratio:1.860;95%confidence interval:1.809,1.911),CVDs(1.909;1.836,1.985),nonmalignant RDs(2.178;1.975,2.403),and lung cancer(1.773;1.624,1.937).In the joint exposure model,a simultaneous rise of one IQR in all four compositions increased the risk of cardiorespiratory mortality by at least 36.3%,with long-term exposure to SO_(4)^(2–)contributing the most to nonaccidental and cardiopulmonary *** with higher incomes and lower education levels were found to be more vulnerable.

关键词： PM_(2.5)inorganic chemical compositions mortality cohort study cardiorespiratory disease joint association

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肇庆市老年人口健康水平的人居环境影响因素

中山大学学报（自然科学版）（中英文） 2024年第1期63卷 45-55页

作者：李宇珅刘晔黄柏石孙志涯中山大学地理科学与规划学院广东广州510006 贵阳学院城乡规划与建筑工程学院贵州贵阳550005 广东省公共安全与灾害工程技术研究中心/广东省城市化与地理环境空间模拟重点实验室广东广州510006 肇庆市统计局广东肇庆526040

基于2020年肇庆市乡镇街道地理尺度的人口普查数据,运用描述性统计方法揭示肇庆市老年人口健康水平的群体差异和空间格局,采用Tobit回归模型识别影响老年人口健康水平的人居环境要素,并探讨了多维人居环境要素对老年人口健康水平可能存... 详细信息

基于2020年肇庆市乡镇街道地理尺度的人口普查数据,运用描述性统计方法揭示肇庆市老年人口健康水平的群体差异和空间格局,采用Tobit回归模型识别影响老年人口健康水平的人居环境要素,并探讨了多维人居环境要素对老年人口健康水平可能存在的混杂影响。结果表明:1)肇庆市城镇老年人口的健康水平优于乡村,老年人口健康水平存在性别差异,70岁后呈现女性健康优势被男性反转的特征。2)老年人口的健康水平呈现东南高西北低的特征,在城区、城关镇、建制镇组成的城市内部空间结构中存在等级分异格局。3)PM_(2.5)和地区健康老人比例有显著的负相关关系,年均绿量对健康老人比例的影响并不显著,但却在乡村地区年均绿量可以缓解PM_(2.5)和健康老人比例的负相关关系,污染企业数量和区域贫困剥夺指标则会加剧PM_(2.5)对乡村健康老人比例的负向影响;优质的住房条件有助于提高健康老年人比例,医疗床位数、无主要收入来源、贫困剥夺、高龄对健康老人比例呈负向的预测作用。

关键词：老年人口健康水平人居环境人口普查 Tobit回归模型

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INTERANNUAL VARIABILITY OF WINTER-TO-SPRING CIRCULATION TRANSITION OVER SOUTHERN china AND ITS SURROUNDING AREAS AND MECHANISMS

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Journal of Tropical Meteorology 2019年第4期25卷 471-482页

作者： ZHOU Ming-sen JIAN Mao-qiu center for Monsoon and environment Research/guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies/School of Atmospheric Sciences Sun Yat-sen UniversityGuangzhou 510275 China Southern Marine Science and Engineering guangdong Laboratory(Zhuhai) Zhuhai 519082China

The climatological features and interannual variation of winter-to-spring transition over southern china and its surrounding areas, and its possible mechanisms are examined in this study. The climatological mean winter-to-spring transition is approximately in mid-March over southern china and the northern South china Sea. During the transition stage, anomalous southwest winds prevail at low-level over southern china and its nearby regions with enhanced convergence center over southern china, bringing more moisture from the Bay of Bengal(BOB) and the South china Sea(SCS) to southern china;meanwhile, the upper level is characterized by an obvious divergence wind pattern over southern china to the southwest part of Japan and enhanced upward motion. All the change of circulation is favorable to an increase of precipitation over southern china after seasonal transition. The winter-to-spring transition is predominantly on the interannual variation over southern china and the northern SCS. Early winter-to-spring transitions may induce more precipitation over southern china in spring, especially in March, while late cases will result in less precipitation. The interannual variability of the winter-to-spring transition and the related large-scale circulation are closely associated with the decaying phase of ENSO events. The warm ENSO events contribute to early winter-to-spring transitions and more precipitation over southern china.

关键词： winter-to-spring transition southern china and its surrounding areas interannual variability mechanism ENSO

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乡村旅游场域非对称权力关系下的东道主凝视

旅游学刊 2024年第8期39卷 28-39页

作者：赵锦源孙九霞王思雅中山大学旅游学院广东广州510275 中山大学旅游休闲与社会发展研究中心广东广州510275 中山大学大湾区人文共同体重点实验室广东广州510275

凝视理论自其诞生之初便伴随着权力的审视与规训,旅游凝视也同样如此。在旅游主客之间的权力关系中,游客通常被视为优势权力者,然而在现实中所表现出来的是东道主同样具有凝视游客的权力。文章从东道主凝视的角度出发,选取雄安新区W村... 详细信息

凝视理论自其诞生之初便伴随着权力的审视与规训,旅游凝视也同样如此。在旅游主客之间的权力关系中,游客通常被视为优势权力者,然而在现实中所表现出来的是东道主同样具有凝视游客的权力。文章从东道主凝视的角度出发,选取雄安新区W村作为案例地,揭示游客与东道主之间权力关系及其转变过程,发现东道主为制衡游客权力、保护自身利益而采取的4种方案:隐晦抵抗、公开抵抗、合作和消极一致。研究发现,通常被认为处于权力低位的东道主也具有使游客按照其预期方式行事的手段,从而促进主客平衡和良性互动的实现,还创造性地提出游客凝视与东道主凝视相互影响的理论框架。为最大限度保护主客双方利益,应自上而下调整乡村旅游场域中的权力分配,以促进乡村旅游可持续发展。

关键词：旅游凝视东道主凝视主客互动乡村旅游权力关系

Land-surface processes and summer-cloud-precipitation characteristics in the Tibetan Plateau and their effects on downstream weather: a review and perspective

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National Science Review 2020年第3期7卷 500-515页

作者： Yunfei Fu Yaoming Ma Lei Zhong Yuanjian Yang Xueliang Guo Chenghai Wang Xiaofeng Xu Kun Yang Xiangde Xu Liping Liu guangzhou Fan Yueqing Li Donghai Wang School of earth and Space Sciences University of Science and Technology of China Key Laboratory of Tibetan environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of Sciences CAS center for Excellence in Tibetan Plateau earth Sciences Chinese Academy of Sciences university of Chinese Academy of Sciences CAS center for Excellence in Comparative Planetology School of Atmospheric Physics Nanjing University of Information Science and Technology State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences China Meteorological Administration School of Atmospheric Sciences Lanzhou University Ministry of Education Key Laboratory for earth System Modeling Department of Earth System Science Tsinghua University Chengdu university of Information Technology Institute of Plateau Meteorology CMA School of Atmospheric Sciences Sun Yat-sen University

Correct understanding of the land-surface processes and cloud-precipitation processes in the Tibetan Plateau(TP) is an important prerequisite for the study and forecast of the downstream activities of weather systems and one of the key points for understanding the global atmospheric movement. In order to show the achievements that have been made, this paper reviews the progress on the observations for the atmospheric boundary layer, land-surface heat fluxes, cloud-precipitation distributions and vertical structures by using ground-and space-based multiplatform, multisensor instruments and the effect of the cloud system in the TP on the downstream weather. The results show that the form drag related to the topography, land–atmosphere momentum and scalar fluxes is an important part of the parameterization process. The sensible heat flux decreased especially in the central and northern TP caused by the decrease in wind speeds and the differences in the ground-air temperatures. Observations show that the cloud and precipitation over the TP have a strong diurnal variation. Studies also show the compressed-air column in the troposphere by the higher-altitude terrain of the TP makes particles inside clouds vary at a shorter distance in the vertical direction than those in the non-plateau area so that precipitation intensity over the TP is usually small with short duration, and the vertical structure of the convective precipitation over the TP is obviously different from that in other regions. In addition, the influence of the TP on severe weather downstream is preliminarily understood from the mechanism. It is necessary to use model simulations and observation techniques to reveal the difference between cloud precipitation in the TP and non-plateau areas in order to understand the cloud microphysical parameters over the TP and the processes of the land boundary layer affecting cloud, precipitation and weather in the downstream regions.

关键词： Tibetan Plateau land-surface processes cloud-precipitation characteristics downstream effects

Assessing Landsat-8 atmospheric correction schemes in low to moderate turbidity waters from a global perspective

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International Journal of Digital earth 2023年第1期16卷 66-92页

作者： Nanyang Yan Zhen sun Wei Huang Zhao Jun Shaojie sun School of Marine Sciences Sun Yat-sen UniversityGuangzhouPeople’s Republic of China Southern Marine Science and Engineering guangdong Laboratory(Zhuhai) ZhuhaiPeople’s Republic of China guangdong Provincial Key Laboratory of Marine resources and Coastal Engineering GuangzhouPeople’s Republic of China Pearl River Estuary Marine Ecosystem Research Station Ministry of EducationZhuhaiPeople’s Republic of China Key Laboratory of Natural resources Monitoring in Tropical and Subtropical area of South china Ministry of Natural ResourcesGuangzhouPeople’s Republic of China

Atmospheric correction is one of the major challenges in ocean color remote sensing,thus threatening comprehensive evaluation of water quality within aquatic *** this study,five state-of-the-art atmospheric correction(AC)processors(***,C2RCC,iCOR,L2gen,and Polymer)were applied to Operational Land Imager(OLI)Landsat-8 scenes and evaluated against in situ measurements across various types of waters worldwide.A total of 262 matchups between in situ measured and satellite-derived remote sensing reflectance(R_(rs))at 20 sites were obtained between August 2013 and August *** of optical water types(OWTs)was carried out using in situ measurements with matched satellite ***-specific analysis demonstrated that L2gen produced the most accurate Rrs with R^(2)≥0.74 and root mean squared error(RMSE)≤0.0018 sr^(–1) for the four visible bands of OLI,followed by Polymer,C2RCC,iCOR,and *** terms of R_(rs) spectral similarity,C2RCC yielded the lowest spectral angle(SA)of 8.55°,followed by L2gen(SA=9.20°).The advantage and disadvantage of each AC scheme were *** to improve the accuracy for atmospheric correction were made,such as polarization observations and concurrent aerosol and ocean color measurements.

关键词： Atmospheric correction Landsat-8 oceancolor remote sensing reflectance

西藏雅鲁藏布江缝合带西段达巴蛇绿岩年代学、地球化学特征及其构造意义

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地球科学 2018年第4期43卷 975-990页

作者：程晨夏斌郑浩袁亚娟殷征欣陆野徐迟张霄中山大学海洋科学学院广东广州510006 海洋石油勘探开发广东省高校重点实验室广东广州510006 国家海洋局南海技术调查中心广东广州510300

达巴蛇绿岩位于雅鲁藏布江蛇绿岩带西段南亚带,主要由地幔橄榄岩、基性岩脉和硅质岩组成,其形成时代和构造背景尚不清楚.首次报道了达巴蛇绿岩中基性岩脉的岩石学、锆石U-Pb年代学、全岩地球化学数据.达巴辉长岩和辉绿岩具有高的Al和Mg... 详细信息

达巴蛇绿岩位于雅鲁藏布江蛇绿岩带西段南亚带,主要由地幔橄榄岩、基性岩脉和硅质岩组成,其形成时代和构造背景尚不清楚.首次报道了达巴蛇绿岩中基性岩脉的岩石学、锆石U-Pb年代学、全岩地球化学数据.达巴辉长岩和辉绿岩具有高的Al和Mg、低Ti、K和P,为低钾钙碱性玄武质岩石.岩石具有与N-MORB一致的稀土配分模式,但是N-MORB标准化蛛网图中显示Nb负异常,显示了受到俯冲板片流体的影响.辉绿岩的锆石U-Pb年龄为120.0±1.7Ma,为早白垩世晚期,地球化学特征显示源自于低程度的尖晶石相地幔源区的部分熔融.结合前人研究成果,认为达巴蛇绿岩形成于与初始俯冲有关的弧前扩张中心,是受到俯冲板片流体交代的上覆地幔楔部分熔融的产物.

关键词：雅鲁藏布江缝合带达巴蛇绿岩地球化学锆石U-Pb定年构造环境