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A 31-year Global Diurnal Sea Surface Temperature Dataset Created by an Ocean Mixed-Layer Model

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Advances in Atmospheric Sciences 2018年第12期35卷 1443-1454页

作者： Xiang LI tiejun ling Yunfei ZHANG Qian ZHOU Key Laboratory of Research on Marine Hazards Forecasting National Marine Environmental Forecasting CenterState Oceanic Administration

A dataset of hourly sea surface temperature(SST) from the period 1 January 1982 to 31 December 2012, and covering the global ocean at a resolution of 0.3°× 0.3°, was created using a validated ocean mixed-layer model(MLSST). The model inputs were heat flux and surface wind speed obtained from the Coupled Forecast System Reanalysis dataset. Comparisons with in-situ data from the Tropical Atmosphere Ocean array and the National Data Buoy Center showed that the MLSST fitted very well with observations, with a mean bias of 0.07℃, and a root-mean-square error(RMSE) and correlation coefficient of 0.37℃ and 0.98, respectively. Also, the MLSST fields successfully reproduced the diurnal cycle of SST in the in-situ data, with a mean bias of -0.005℃ and RMSE of 0.26℃. The 31-year climatology revealed that the diurnal range was small across most regions, with higher values in the eastern and western equatorial Pacific, northern Indian Ocean, western Central America, northwestern Australia, and several coastal regions. Significant seasonal variation of diurnal SST existed in all basins. In the Atlantic and Pacific basins, this seasonal pattern was oriented north–south, following the variation in solar insolation, whereas in the Indian basin it was dominated by monsoonal variability. At the interannual scale, the results highlighted the relationship between diurnal and interannual variations of SST, and revealed that the diurnal warming in the central equatorial Pacific could be a potential climatic indicator for ENSO prediction.

关键词： SST diurnal cycle mixed-layer model climatic variation

Numerical Simulation of Typhoon Muifa(2011) Using a Coupled Ocean-Atmosphere-Wave-Sediment Transport(COAWST) Modeling System

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Journal of Ocean University of China 2015年第2期14卷 199-209页

作者： LIU Na ling tiejun WANG Hui ZHANG Yunfei GAO Zhiyi WANG Yi Key Laboratory of Research on Marine Hazards Forecasting National Marine Environmental Forecasting Center

The newly developed Coupled Ocean-Atmosphere-Wave-Sediment Transport(COAWST) Modeling System is applied to investigate typhoon-ocean interactions in this study. The COAWST modeling system represents the state-of-the-art numerical simulation technique comprising several coupled models to study coastal and environmental processes. The modeling system is applied to simulate Typhoon Muifa(2011), which strengthened from a tropical storm to a super typhoon in the Northwestern Pacific, to explore the heat fluxes exchanged among the processes simulated using the atmosphere model WRF, ocean model ROMS and wave model SWAN. These three models adopted the same horizontal grid. Three numerical experiments with different coupling configurations are performed in order to investigate the impact of typhoon-ocean interaction on the intensity and ocean response to typhoon. The simulated typhoon tracks and intensities agree with observations. Comparisons of the simulated variables with available atmospheric and oceanic observations show the good performance of using the coupled modeling system for simulating the ocean and atmosphere processes during a typhoon event. The fully coupled simulation that includes a ocean model identifies a decreased SST as a result of the typhoon-forced entrainment. Typhoon intensity and wind speed are reduced due to the decrease of the sea surface temperature when using a coupled ocean model. The experiments with ocean coupled to atmosphere also results in decreased sea surface heat flux and air temperature. The heat flux decreases by about 29% compared to the WRF only case. The reduction of the energy induced by SST decreases, resulting in weakening of the typhoon. Coupling of the waves to the atmosphere and ocean model induces a slight increase of SST in the typhoon center area with the ocean-atmosphere interaction increased as a result of wave feedback to atmosphere.

关键词： COAWST modeling system typhoon Muifa WRF ROMS SWAN

Soil and fine root-associated microbial communities are niche dependent and influenced by copper fungicide treatment during tea plant cultivation

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Horticulture Research 2023年第3期10卷 11-14页

作者： Ali Inayat Mallano Jie Yu Tabys Dina Fangdong Li tiejun ling Naveed Ahmad Jeffrey Bennetzen Wei Tong State Key Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei 230036China Sericultural Research Institute Anhui Academy of Agricultural SciencesHefei 230061China School of Medicine Nazarbayev UniversityNur-Sultan 020000Kazakhstan School of Science Anhui Agricultural UniversityHefei 230036China Institute of Crop Germplasm Resources Shandong Academy of Agricultural SciencesJinan 250100China Department of Genetics University of GeorgiaAthensGA30602USA

Dear Editor,Fungicide treatment has a profound effect on controlling plant pathogens in modern agriculture,however,it also carries the risk of undesirable *** decades,scientists have been concerned about the harmful impacts of heavy metals like copper(Cu)on crop performance and soil *** of various copper fungicides,like Bordeaux mixture,have been a component of conventional agricultural practices to control fungal and bacterial pathogens,especially in vineyards,tea gardens,or fruit tree orchards[9,10].This treatment increases the accumulation of high levels of Cu in surface soils,and despite the critical role of Cu as an essential trace element in wide biological and metabolic processes,it becomes toxic to plants when applied at high levels[4].The regular application of copper fungicides has also been linked to affecting microbial communities at the levels of diversity[8],population structure[2],abundance,and growth[1,3].Understanding the undesired effects of fungicides on microorganisms’beneficial activities is therefore important for evaluating the hazards associated with the fungicide used in ***,the effects of copper fungicide on full microbial communities remains relatively understudied,especially in tea ***,we herein explored the inf luence of Bordeaux mixture under different management regimes(raking or without raking leaf litter)on microbial communities of root,bulk soil,and rhizosphere compartments of tea plants planted in a ten-year-old tea *** provided insights into the ecological consequences of tea management practices that might help to identify specific fungicide treatment regimens,environmental characteristics,and microbial community members to minimize the negative environmental outcomes and optimize the positive anti-pathogen aspects of fungicide treatment.

关键词： soil planted copper

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Chinese Herbal Medicines 2023年第1期15卷 33-36页

作者： Hongjing Pan Miamoiao Le Chunnian He Chung S.Yang tiejun ling State Key Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei 230036China Institute of Medicinal Plant Development Chinese Academy of Medicinal SciencesPeking Union Medicinal CollegeBeijing 100193China Ernest Maria School of Pharmacy Rutgers UniversityPiscatawayNJ 08854-8020USA International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education Anhui Agricultural UniversityHefei 230036China

Tea is a famous beverage that is produced from leaves of Camellia *** the six major tea categories in China,dark tea is the only one that involves microbial fermentation in the manufacturing process,which contributes unique flavors and functions for the *** the recent decade,the reports about the biofunctions of dark teas have increased *** it may be the proper time to consider dark tea as one potential homology of medicine and *** this viewpoint,our current understanding of the chemical constituents,biological activities and possible health beneficial effects of dark teas were *** future directions and challenges to the development perspectives of dark teas were also discussed.

关键词： biological activities dark tea metabolites medicinal development perspectives

东南印度洋沿岸海温年代际振荡及经向传播探讨

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海洋学报 2013年第4期35卷 47-51页

作者：蔡怡凌铁军国家海洋局海洋灾害预报技术研究重点实验室北京100081 国家海洋环境预报中心北京100081

用SODA资料分析了热带西南印度洋上升区温度距平与整个南印度洋温度距平的时滞相关,发现热带西南印度洋上升区温度距平与65°S,105°E附近200m深度的温度距平存在滞后10a的相关振荡,同时探讨了其可能的机制为温跃层内的斜压内波驱动,即6... 详细信息

用SODA资料分析了热带西南印度洋上升区温度距平与整个南印度洋温度距平的时滞相关,发现热带西南印度洋上升区温度距平与65°S,105°E附近200m深度的温度距平存在滞后10a的相关振荡,同时探讨了其可能的机制为温跃层内的斜压内波驱动,即65°S,105°E附近200m深度的温度距平沿着温跃层上层在东南印度洋沿岸从高纬度向低纬的传播,传播时间大约为10a左右,这种信号在传播过程中表现得较弱,而在起点和终点的两端振荡比较强。波动的传播相比振荡本身要显得弱。

关键词：东南印度洋海温经向传播 10周期振荡西南印度洋上升区

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全球业务化海洋预报进展与展望

地球科学进展 2018年第2期33卷 131-140页

作者：刘娜王辉凌铁军祖子清国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室北京100081

海洋环境预报在经济发展和基础设施建设等方面发挥着越来越重要的作用,涉及到海上安全、海洋能源开发与保护、远洋运输和海洋渔业等许多领域和方面。近年来,各国的全球海洋预报取得了显著的进展。全球海洋数据同化实验(GODAE)Ocean Vie... 详细信息

海洋环境预报在经济发展和基础设施建设等方面发挥着越来越重要的作用,涉及到海上安全、海洋能源开发与保护、远洋运输和海洋渔业等许多领域和方面。近年来,各国的全球海洋预报取得了显著的进展。全球海洋数据同化实验(GODAE)Ocean View计划为各国提供协调和技术支持,发展并建立全球业务化海洋预报系统,将全球海洋预报的概念实现业务化运行。全球业务化海洋预报系统以海洋动力数值模式作为动力框架,将近实时高质量的观测输入场通过资料同化融入到模式中,实现对全球范围多时空尺度的海洋状况提供未来演替的预测,并对产品表现不间断地进行监测以保证预报服务的质量。简要介绍和回顾GODAE Ocean View所涵盖的全球海洋预报系统的发展历程和现状,并对全球海洋预报未来发展的难点与问题给予展望。

关键词：全球海洋预报业务化海洋学海洋数据同化 GODAE Ocean View

中国周边海域海面温度日变化对区域气候的影响

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气候与环境研究 2019年第2期24卷 214-226页

作者：周倩凌铁军李响张蕴斐国家海洋环境预报中心北京100081

利用区域气候模式,分别以逐时海面温度(sea surface temperature, SST)数据及逐日SST数据作为模式的海表温度进行强迫,开展了1991～2010年共计20年的数值模拟,探讨SST日变化对中国区域气候变化的影响。对比结果表明,两组试验均能合理地... 详细信息

利用区域气候模式,分别以逐时海面温度(sea surface temperature, SST)数据及逐日SST数据作为模式的海表温度进行强迫,开展了1991～2010年共计20年的数值模拟,探讨SST日变化对中国区域气候变化的影响。对比结果表明,两组试验均能合理地再现中国区域气候的主要气候态特征。同时发现,两组试验模拟的气候特征在我国沿海区域以及近海洋面上存在明显差异:考虑SST日变化之后,2 m气温和感热通量差异呈现夏季(冬季)升高(降低)为主的趋势;潜热通量则与之相反;低层风场差异在夏季以海洋吹向大陆的东南风为主,冬季则以陆面吹向海洋的西北风差异为主;另外,水汽输送差异呈气旋式(反气旋式)时,降水出现正差异(负差异)。SST日变化对上述气候因子的影响在夏季更为显著。

关键词：海面温度日变化中国近海区域区域气候

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儿茶素单体分离制备方法

食品与发酵工业 2008年第1期34卷 141-146页

作者：魏志文李大祥宛晓春凌铁军安徽农业大学农业部教育部茶叶生物化学与生物技术重点开放实验室安徽合肥230036

茶叶中含有丰富的儿茶素类物质,占茶叶干重12%～24%,是茶叶中最具生理活性和保健功效的物质。文中对目前国内外纯化制备儿茶素的常见方法进行了综述。常见的儿茶素制备方法包括纤维素柱层析、葡聚糖凝胶(Sephadex LH—20)、硅胶柱层析... 详细信息

茶叶中含有丰富的儿茶素类物质,占茶叶干重12%～24%,是茶叶中最具生理活性和保健功效的物质。文中对目前国内外纯化制备儿茶素的常见方法进行了综述。常见的儿茶素制备方法包括纤维素柱层析、葡聚糖凝胶(Sephadex LH—20)、硅胶柱层析、吸附树脂柱层析和高速逆流色谱等方法。通过这些方法制备的儿茶素单体纯度不高,仍需结合结晶、制备型液相色谱技术或膜分离技术进行进一步纯化,从而才能获得高纯度的儿茶素单体。在儿茶素单体的制备方法中,每种方法都有相应的优缺点。Sephadex LH—20柱层析分离的量较大,但是分离时间较长,而且Sephadex LH—20柱填料昂贵;高速逆流色谱分离效果较好,得到的儿茶素单体的纯度较高,分离时间相对要短,但是目前市场上只有分析型,分离的量相对少;硅胶材料廉价,但是分离的效果不佳,且分离过程相对繁琐,单体制备量较小;吸附树脂柱层析分离已实现EGCG单体的工业化生产,但在其他儿茶素单体的分离制备上尚不成熟。

关键词：儿茶素分离制备茶叶纤维素柱层析分离硅胶柱层析分离高速逆流色谱分离

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茶叶培养基对海洋冠突散囊菌代谢路径的调控

微生物学通报 2024年第10期51卷 4181-4194页

作者：任鸿宇张宁韩晓玉凌铁军安徽农业大学茶树生物学与资源利用国家重点实验室安徽合肥230036

【背景】为更好地适应生境,真菌会产生种类多样的次级代谢物。【目的】探究来自茯砖茶和海洋2种生境下的冠突散囊菌(Eurotium cristatum)在PDA培养基中的次级代谢物差异、茶叶培养基对海洋冠突散囊菌代谢产物的调控规律及其可能的机制... 详细信息

【背景】为更好地适应生境,真菌会产生种类多样的次级代谢物。【目的】探究来自茯砖茶和海洋2种生境下的冠突散囊菌(Eurotium cristatum)在PDA培养基中的次级代谢物差异、茶叶培养基对海洋冠突散囊菌代谢产物的调控规律及其可能的机制。【方法】利用液相色谱-质谱联用技术并结合基于特征物信息的质谱分子网络方法,分析了2种冠突散囊菌在PDA培养基中的次级代谢物差异,并利用多种多元统计方法分析了海洋冠突散囊菌在茶叶培养基中的非挥发性代谢物变化规律。此外,我们还研究了直接和非直接碳源对其次级代谢物的影响规律。【结果】2种生境中的冠突散囊菌在聚酮的合成能力方面相似,而在非核糖体肽的合成方面有显著区别。其中,茯砖茶冠突散囊菌能产生异戊烯基环二肽,而海洋冠突散囊菌则能产生寡肽。5 d左右的茶叶培养基驯化,促使海洋冠突散囊菌的次级代谢通路发生了变化。海洋冠突散囊菌在茶叶培养基中的一些次级代谢物与其在非直接碳源培养基中相同。【结论】来自2种生境的冠突散囊菌的次级代谢路径有显著差异,茶叶培养基短时间的驯化促使海洋冠突散囊菌的次级代谢路径发生了一些变化,部分原因可能是源于其碳代谢抑制的解除。

关键词：生境真菌冠突散囊菌次级代谢物碳代谢抑制质谱分子网络