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Influence of Coriolis Parameter Variation on Langmuir Turbulence in the Ocean Upper Mixed Layer with Large Eddy Simulation

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Advances in Atmospheric Sciences 2022年第9期39卷 1487-1500页

作者： Dongxiao WANG guojing li lian SHEN Yeqiang SHU State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Department of Mechanical Engineering and St.Anthony Falls Laboratory University of MinnesotaMinneapolisMinnesota 55455USA Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 510301China

Langmuir turbulence is a complex turbulent process in the ocean upper mixed *** Coriolis parameter has an important effect on Langmuir turbulence through the Coriolis-Stokes force and Ekman effect,however,this effect on Langmuir turbulence has not been systematically ***,the impact of the Coriolis parameter on Langmuir turbulence with a change of latitude(LAT)from 20°N to 80°N is studied using a non-hydrostatic large eddy simulation model under an ideal *** results show that the ratio of the upper mixed layer depth to Ekman depth scale(RME)RME=0.266(LAT=50°N)is a key value(latitude)for the modulation effect of the Coriolis parameter on the mean and turbulent statistics of Langmuir *** is found that the rate of change of the sea surface temperature,upper mixed layer depth,entrainment flux,crosswind velocity,downwind vertical momentum flux,and turbulent kinetic energy budget terms associated with Langmuir turbulence are more evident at RME≤0.266(LAT≤50°N)than at RME≥0.266(LAT≥50°N).However,the rate of change of the depth-averaged crosswind vertical momentum flux does not have a clear variation between RME≤0.266 and RME≥*** complex changes of both Langmuir turbulence characteristics and influence of Langmuir turbulence on the upper mixed layer with latitude presented here may provide more information for further improving Langmuir turbulence parameterization.

关键词： Langmuir turbulence Coriolis parameter the upper mixed layer large eddy simulation

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嫁接对瓠瓜抗病抗逆性及果实品质的影响

核农学报 2025年第1期39卷 191-200页

作者：王海燕汪颖王尖邢乃林李国景徐沛吴晓花中国计量大学生命科学学院浙江杭州310018 浙江省农业科学院蔬菜研究所浙江杭州310021 宁波市特色园艺作物品质调控和抗性育种重点实验室浙江宁波315040

为探究嫁接对瓠瓜抗病抗逆性和果实品质的影响,以瓠瓜自根苗为对照,比较4种南瓜型砧木(全能铁甲、思壮12、砧西316、黑武士)嫁接浙蒲9号瓠瓜的成活率、枯萎病抗性、低温弱光性及耐盐性、果实品质等差异,并通过主成分分析及隶属函数法对... 详细信息

为探究嫁接对瓠瓜抗病抗逆性和果实品质的影响,以瓠瓜自根苗为对照,比较4种南瓜型砧木(全能铁甲、思壮12、砧西316、黑武士)嫁接浙蒲9号瓠瓜的成活率、枯萎病抗性、低温弱光性及耐盐性、果实品质等差异,并通过主成分分析及隶属函数法对不同嫁接组合进行综合评价。结果表明,浙蒲9号/思壮12嫁接组合的成活率最高(94.87%),不同砧穗组合枯萎病抗性均较对照增强。浙蒲9号/思壮12在低温弱光下的最大光化学效率(Fv/Fm)最高,在200 mmol·L^(-1)NaCl胁迫下生长较好。与自根苗相比,嫁接植株长势均变旺,果实的维生素C含量降低,其他指标均有不同程度的提升。浙蒲9号/全能铁甲的果实可溶性固形物含量最高,浙蒲9号/砧西316的果实钙含量最高,浙蒲9号/黑武士的果实蛋白质和镁含量最高。浙蒲9号/思壮12的产量、果实游离谷氨酸和钾含量最高,硬度和可滴定酸含量最小,瓠瓜品质有所提升。同时,主成分分析和隶属函数值综合评价结果表明,浙蒲9号/思壮12的D值为0.914,排名第一。综上,嫁接可以增强瓠瓜枯萎病抗性,不同程度提高瓠瓜的低温、盐胁迫耐受性,合理选择砧木可提高瓠瓜果实品质,以思壮12为砧木嫁接浙蒲9号瓠瓜综合表现最佳。本研究结果为适宜瓠瓜嫁接砧木的选择提供了技术支持。

关键词：瓠瓜嫁接抗病抗逆性果实品质综合评价

High-Throughput physiology-based stress response phenotyping:Advantages,applications and prospective in horticultural plants

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Horticultural Plant Journal 2021年第3期7卷 181-187页

作者： Yanwei li Xinyi Wu Wenzhao Xu Yudong Sun Ying Wang guojing li Pei Xu Institute of Vegetables Zhejiang Academy of Agricultural SciencesHangzhou 310021China College of life Sciences China Jiliang UniversityHangzhou 310018China Huaiyin Institute of Agricultural Sciences of Xuhuai Region in Jiangsu Jiangsu 223001China

Phenomics is a new branch of science that provides high-throughput quantification of plant and animal traits at systems *** last decade has witnessed great successes in high-throughput phenotyping of numerous morphological traits,yet major challenges still exist in precise phenotyping of physiological traits such as transpiration and *** to the highly dynamic nature of physiological traits in responses to the environment,appropriate selection criteria and efficient screening systems at the physiological level for abiotic stress tolerance have been largely absent in *** this review,the current status of phenomics techniques was briefly summarized in horticultural ***,the emerging field of high-throughput physiology-based phenotyping,which is referred to as“physiolomics”,for drought stress responseswas *** addition to analyzing the advantages of physiology-based phenotyping overmorphology-based approaches,recent examples that applied high-throughput physiological phenotyping to model and non-model horticultural plants were revisited and *** on the collective findings,we propose that high-throughput,non-destructive,and automatic physiological assays can and should be used as routine methods for phenotyping stress response traits in horticultural plants.

关键词： Phenomics Physiolomics Isohydric/anisohydric Abiotic stress

Influence of the upper mixed layer depth on Langmuir turbulence characteristics

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Journal of Oceanology and limnology 2023年第1期41卷 17-37页

作者： guojing li Changming DONG Jiayi PAN Adam T.DEVliN Dongxiao WANG State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Nanjing University of Information Science and Technology Nanjing 210044China Institute of Space and Earth Information Science the Chinese University of Hong KongHong Kong 999077China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 510301China

The upper mixed layer depth(h)has a significant seasonal variation in the real ocean and the low-order statistics of Langmuir turbulence are dramatically influenced by the upper mixed layer *** explore the influence of the upper mixed layer depth on Langmuir turbulence under the condition of the wind and wave equilibrium,the changes of Langmuir turbulence characteristics with the idealized variation of the upper mixed layer depth from very shallow(h=5 m)to deep enough(h=40 m)are studied using a non-hydrostatic large eddy simulation *** simulation results show that there is a direct entrainment depth induced by Langmuir turbulence(h_(LT))within the *** normalized depthaveraged vertical velocity variance is smaller and larger than the downwind velocity variance for the ratio of the upper mixed layer to a direct entrainment depth induced by Langmuir turbulence h/h_(LT)1,respectively,indicating that turbulence characteristics have the essential change(i.e.,depth-averaged vertical velocity variance(DAVV)DADV for Langmuir turbulence)between h/h_(LT)*** rate of change of the normalized depth-averaged low-order statistics for h/h_(LT)*** reason is that the downward pressure perturbation induced by Langmuir cells is strongly inhibited by the upward reactive force of the strong stratified thermocline for h/h_(LT)***,the upper mixed layer depth has significant influences on Langmuir turbulence characteristics.

关键词： the upper mixed layer depth Langmuir turbulence turbulent characteristics large eddy simulation

Frontogenesis and Frontolysis of a Cold Filament Driven by the Cross-Filament Wind and Wave Fields Simulated by a Large Eddy Simulation

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Advances in Atmospheric Sciences 2024年第3期41卷 509-528页

作者： guojing li Dongxiao WANG Changming DONG Jiayi PAN Yeqiang SHU Zhenqiu ZHANG State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Shool of Marine Sciences Nanjing University of Information Science and TechnologyNanjing 210044China School of Geography and Environment Jiangxi Normal UniversityNanchang 330022China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

The variations of the frontogenetic trend of a cold filament induced by the cross-filament wind and wave fields are studied by a non-hydrostatic large eddy simulation. Five cases with different strengths of wind and wave fields are *** results show that the intense wind and wave fields further break the symmetries of submesoscale flow fields and suppress the levels of filament frontogenesis. The changes of secondary circulation directions—that is, the conversion between the convergence and divergence of the surface cross-filament currents with the downwelling and upwelling jets in the filament center—are associated with the inertial oscillation. The filament frontogenesis and frontolysis caused by the changes of secondary circulation directions may periodically sharpen and smooth the gradient of submesoscale flow *** lifecycle of the cold filament may include multiple stages of filament frontogenesis and frontolysis.

关键词： cold filament frontogenesis frontolysis large eddy simulation

Impact of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using a high-resolution model simulation

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Frontiers of Environmental Science & Engineering 2022年第4期16卷 47-57页

作者： Hengrui Tao Jia Xing Gaofeng Pan Jonathan Pleim limei Ran Shuxiao Wang Xing Chang guojing li Fei Chen Junhua li Aviation University of Air Force Changchun 130022China School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Research Triangle Park Environmental Protection AgencyNC 27711USA East Remote Sensing Laboratory United States Department of AgricultureNC 20250USA Unit No.96941 of Chinese People's liberation Army Beijing 100041China Unit No.31010 of Chinese People's liberation Army Beijing 100081China

Anthropogenic heat emissions(AHE)play an important role in modulating the atmospheric thermodynamic and kinetic properties within the urban planetary boundary layer,particularly in densely populated megacities like *** this study,we estimate the AHE by using a Large-scale Urban Consumption of energY(LUCY)model and further couple LUCY with a high-resolution regional chemical transport model to evaluate the impact of AHE on atmospheric environment in *** areas with high AHE,the 2-m temperature(T_(2))increased to varying degrees and showed distinct diurnal and seasonal variations with maxima in night and *** increase in 10-m wind speed(WS_(10))and planetary boundary layer height(PBLH)exhibited slight diurnal variations but showed significant seasonal ***,the systematic continuous precipitation increased by 2.1 mm due to the increase in PBLH and water vapor in upper *** contrast,the precipitation in local thermal convective showers increased little because of the limited water ***,the PM_(2.5) reduced in areas with high AHE because of the increase in WS_(10) and PBLH and continued to reduce as the pollution levels *** contrast,in areas where prevailing wind direction was opposite to that of thermal circulation caused by AHE,the WS_(10) reduced,leading to increased PM_(2.5).The changes of PM_(2.5) illustrated that a reasonable AHE scheme might be an effective means to improve the performance of PM_(2.5) ***,high AHE aggravated the O_(3) pollution in urban areas due to the reduction in NO_(x).

关键词： Anthropogenic heat emissions LUCY High-resolution Meteorological parameters Air quality

Contrasting dynamic characteristics of shear turbulence and Langmuir circulation in the surface mixed layer

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Acta Oceanologica Sinica 2015年第5期34卷 1-11页

作者： li guojing WANG Dongxiao CHEN Ju YAO Jinglong ZENG lili SHU Yeqiang SUI Dandan State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of Sciences

Large eddy simulation （LES） is used to investigate contrasting dynamic characteristics of shear turbulence （ST） and Langmuir circulation （LC） in the surface mixed layer （SML）. ST is usually induced by wind forcing in SML. LC can be driven by wave-current interaction that includes the roles of wind, wave and vortex forcing. The LES results show that LC suppresses the horizontal velocity and greatly modifies the downwind velocity profile, but increases the vertical velocity. The strong downweUing jets of LC accelerate and increase the downward transport of energy as compared to ST. The vertical eddy viscosity Km of LC is much larger than that of ST. Strong mixing induced by LC has two locations. They are located in the 26s-36s （Stokes depth scale） and the lower layer of the SML, respectively. Its value and position change periodically with time. In contrast, maximum Km induced by ST is located in the middle depth of the SML. The turbulent kinetic energy （TKE） generated by LC is larger than that by ST. The differences in vertical distributions of TKE and Krn are evident. Therefore, the parameterization of LC cannot be solely based on TKE. For deep SML, the convection of large-scale eddies in LC plays a main role in downward transport of energy and LC can induce stronger velocity shear （S2） near the SML base. In addition, the large-scale eddies and Sz induced by LC is changing all the time, which needs to be fully considered in the parameterization of LC.

关键词： surface mixed layer Langmuir circulation shear turbulence large eddy simulation

MtROP8 is involved in root hair development and the establishment of symbiotic interaction between Medicago truncatula and Sinorhizobium meliloti

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Chinese Science Bulletin 2014年第32期59卷 4289-4297页

作者： Qi Wang Mingjuan Lei Aimin Chen Ruigang Wang guojing li Yanzhang Wang College of life Sciences Inner Mongolia Agricultural University National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences

Emerging evidence has demonstrated that ROP GTPases play important roles in symbiosis,but the molecular mechanisms on their regulation in symbiosis are largely *** this study,we showed that MtROP8 is involved in the symbiotic interaction between Medicago truncatula and Sinorhizobium *** analyses showed that MtROP8 was down-regulated in the early infected roots,but significantly up-regulated in nodules compared to the *** analysis of RNA interference(RNAi)-mediated silencing of MtROP8 revealed that knock-down of MtROP8 expression resulted in various developmental defects of root hairs,including branched hairs,short bulbous root hairs,and even root hairs with apparent swollen bases,which were caused by the modification of the distribution and the levels of reactive oxygen species(ROS).Moreover,infection events were increased in transgenic roots harboring the MtROP8 RNAi construct in response to *** inoculation,concomitant with enhanced *** results indicate that MtROP8participates in root hair development and the establishmentof the symbiotic interaction by regulating ROS production and distribution.

关键词：根瘤菌接种共生根毛苜蓿蒺藜早期感染 RNAi RNA干扰

Development of Insertion and Deletion Markers for Bottle Gourd Based on Restriction Site-associated DNA Sequencing Data

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Horticultural Plant Journal 2017年第1期3卷 13-16页

作者： WU Xinyi XU Pei WU Xiaohua WANG Baogen LU Zhongfu li guojing Institute of Vegetables State Key Lab Breeding Base for Sustainable Control of Plant Pest and DiseaseZhejiang Academy of Agricultural Sciences

Bottle gourd is an important cucurbit crop worldwide. To provide more available molecular markers for this crop, a bioinformatic approach was employed to develop insertion–deletions(In Dels) markers in bottle gourd based on restriction site-associated DNA sequencing(RAD-Seq)data. A total of 892 Indels were predicted, with the length varying from 1 bp to 167 bp. Single-nucleotide In Dels were the predominant types of In Dels. To validate these In Dels, PCR primers were designed from 162 loci where In Dels longer than 2 bp were predicated. A total of 112 In Dels were found to be polymorphic among 9 bottle gourd accessions under investigation. The rate of prediction accuracy was thus at a high level of72.7%. DNA fingerprinting for 4 cultivars were performed using 8 selected Indels markers, demonstrating the usefulness of these markers.

关键词： bottle gourd InDels markers RAD-Seq DNA fingerprinting