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The investigation on particulate organic carbon fluxes with disequilibria between thorium-234 and uranium-238 in the Prydz Bay,the Southern Ocean

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Acta Oceanologica Sinica 2008年第2期27卷 21-29页

作者： HE Jianhua MA Hao CHEN Liqi xiang baoqiang ZENG Xianzhang YINMingduan ZENG Wenyi Key Laboratory of Global Change and Marine - Atmospheric Chemistry Third Institute of Oceanography State OceanicAdministration（SOA） Xiamen 361005 China Third Institute of Oceanography SOA Xiamen 361005 China Department of Engineering Physics Tsinghua University Beijing 100084 China Key Laboratory of Marine Science and Numerical Modeling First Institute of Oceanography SOA Qingdao 266061 China

Dissolved and particulate thorium-234, particulate organic carbon in the upper 150 m of water columns from five stations in the Prydz Bay, the Southern Ocean were determined during the 22nd Chinese National Antarctic Research Expedition （from November 2005 to March 2006 ）. The disequilibria between thorium-234 and its parent uranium-238 in upper layer was used to derive the averaged residence time of thorium-234, which decreased along with the latitude to the south and a minimum value, 1 - 8 d for particulate thorium-234 and 29 - 48 d for dissolved thorium-234, appeared at the medium latitude station, and the export fluxes of thorium-234 were calculated too and ＇a maximum value, 0. 35 -0. 63 Bq/（m^3 · d） for the particulate thorium-234 and 0. 44 -0. 65 Bq/ （m^3 ·d） for the dissolved thorium-234, appeared at the same station. The export fluxes of particulate organic carbon at different water columns were derived by two methods with irreversible scavenging model, and the averaged values were 104. 7 mmol/ （ m2 · d ）（ E method） and 120. 6 mmol/（ m2·d ）（ B method ）, respectively, indicating that a relatively high new production would exist in summer in the Prydz Bay where it will play a potential significant role in sequestering the absorption CO2 to deeper ocean.

关键词： POC fluxes disequilibria between thorium-234 and uranium-238 Prydz Bay Southern Ocean

Major Modes of Short-Term Climate Variability in the Newly Developed NUIST Earth System Model(NESM)

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Advances in Atmospheric Sciences 2015年第5期32卷 585-600页

作者： CAO Jian Bin WANG baoqiang xiang Juan LI WU Tianjie Xiouhua FU WU Liguang MIN Jinzhong Earth System Modeling Center Nanjing University of Information Science and Technology Key Laboratory of Meteorological Disaster of Ministry of Education Nanjing University of Information Science and Technology International Pacific Research Center University of Hawaii at Manoa Department of Atmospheric Sciences University of Hawaii at Manoa NOAA/Geophysical Fluid Dynamics Laboratory Princeton NJ 08540 University Corporation for Atmospheric Research Boulder CO 80307 USA

A coupled earth system model（ESM） has been developed at the Nanjing University of Information Science and Technology（NUIST） by using version 5.3 of the European Centre Hamburg Model（ECHAM）, version 3.4 of the Nucleus for European Modelling of the Ocean（NEMO）, and version 4.1 of the Los Alamos sea ice model（CICE）. The model is referred to as NUIST ESM1（NESM1）. Comprehensive and quantitative metrics are used to assess the model＇s major modes of climate variability most relevant to subseasonal-to-interannual climate prediction. The model＇s assessment is placed in a multi-model framework. The model yields a realistic annual mean and annual cycle of equatorial SST, and a reasonably realistic precipitation climatology, but has difficulty in capturing the spring–fall asymmetry and monsoon precipitation domains. The ENSO mode is reproduced well with respect to its spatial structure, power spectrum, phase locking to the annual cycle, and spatial structures of the central Pacific（CP）-ENSO and eastern Pacific（EP）-ENSO; however, the equatorial SST variability,biennial component of ENSO, and the amplitude of CP-ENSO are overestimated. The model captures realistic intraseasonal variability patterns, the vertical-zonal structures of the first two leading predictable modes of Madden–Julian Oscillation（MJO）, and its eastward propagation; but the simulated MJO speed is significantly slower than observed. Compared with the T42 version, the high resolution version（T159） demonstrates improved simulation with respect to the climatology, interannual variance, monsoon–ENSO lead–lag correlation, spatial structures of the leading mode of the Asian–Australian monsoon rainfall variability, and the eastward propagation of the MJO.

关键词： coupled climate model earth system model climate variability

Zonal mean and shift modes of historical climate response to evolving aerosol distribution

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Science Bulletin 2021年第23期66卷 2405-2411页

作者： Sarah M.Kang Shang-Ping Xie Clara Deser baoqiang xiang School of Urban and Environmental Engineering Ulsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Scripps Institution of Oceanography University of California San DiegoLa Jolla CA 92093USA Climate and Global Dynamics Division National Center for Atmospheric ResearchBoulder CO 80307USA National Oceanographic and Atmospheric Administration/Geophysical Fluid Dynamics Laboratory Princeton NJ 08540USA University Corporation for Atmospheric Research Boulder CO 80307USA

Anthropogenic aerosols are effective radiative forcing agents that perturb the Earth’s climate. Major emission sources shifted from the western to eastern hemisphere around the 1980 s. An ensemble of single-forcing simulations with an Earth System Model reveals two stages of aerosol-induced climate change in response to the global aerosol increase for 1940–1980 and the zonal shift of aerosol forcing for 1980–2020, respectively. Here, using idealized experiments with hierarchical models, we show that the aerosol increase and shift modes of aerosol-forced climate change are dynamically distinct, governed by the inter-hemispheric energy transport and basin-wide ocean–atmosphere interactions, *** aerosol increase mode dominates in the motionless slab ocean model but is damped by ocean dynamics. Free of zonal-mean energy perturbation, characterized by an anomalous North Atlantic warming and North Pacific cooling, the zonal shift mode is amplified by interactive ocean dynamics through Bjerknes feedback. Both modes contribute to a La Ni?a-like pattern over the equatorial Pacific. We suggest that a global perspective that accommodates the evolving geographical distribution of aerosol emissions is vital for understanding the aerosol-forced historical climate change.

关键词： Aerosol forced response Aerosol increase mode Aerosol shift mode Energetics Coupled atmosphere-ocean coupling Hierarchical modeling

Abrupt termination of the 2012 Pacific warming and its implication on ENSO prediction

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Abrupt termination of the 2012 Pacific warming and its impli...

印度洋—太平洋暖池季节变化及其相应的大气环流形式

第31届中国气象学会年会

作者： Jingzhi Su baoqiang xiang Bin Wang Tim Li Chinese Academy of Meteorological Sciences NOAA/Geophysical Fluid Dynamics Laboratory PrincetonNew Jerseyand University Corporation for Atmospheric Research International Pacific Research Center and Department of Meteorology University of Hawaii

Seasonal prediction skill in a coupled climate model system largely depends on the El Nio/Southern Oscillation(ENSO)prediction *** summer of 2012,there was a clear signal of developing El Nio over the equatorial Pacific and many models forecasted El Nio occurrence with a peak phase in the subsequent ***,the warming was aborted abruptly in *** this study,we show that the abrupt termination of the 2012 Pacific warming was largely attributed to the anomalous sea surface temperature(SST)cooling in the northeastern subtropical *** anomalous SST cooling induced strong easterly and low-level divergence anomalies,suppressing the development of westerly and convection anomalies over the equatorial central ***,the warming over the equatorial Pacific was decoupled from the wind and subsurface thermocline variability,inhibiting its further development into a mature El Nio in the winter of *** study highlights the importance of the SST anomaly in the northeastern subtropical Pacific in El Nio prediction.

关键词： SST Abrupt termination of the 2012 Pacific warming and its implication on ENSO prediction

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海洋通报 2005年第6期24卷 17-24页

作者：刘娜项宝强陈红霞华锋潘增弟中国海洋大学海洋环境科学与数值模拟国家海洋局重点实验室山东青岛266061 国家海洋局第一海洋研究所山东青岛266061 海洋环境科学与数值模拟国家海洋局重点实验室中国极地研究中心

首先通过对英国大气科学数据中心海表面温度资料和Levitus随深度变化的海温资料的分析,给出了印度洋—太平洋暖池季节变化的详细描述。另外,利用NCEP/NCAR再分析大气资料中的风场数据,采取将水平风场分量分解为无辐散分量和无旋分量的方... 详细信息

首先通过对英国大气科学数据中心海表面温度资料和Levitus随深度变化的海温资料的分析,给出了印度洋—太平洋暖池季节变化的详细描述。另外,利用NCEP/NCAR再分析大气资料中的风场数据,采取将水平风场分量分解为无辐散分量和无旋分量的方法,分析了相应于暖池季节变化的大气环流形式。得到了这样的结论:第一,印度洋—太平洋暖池的位置随季节变化南北移动;暖池面积在北半球的5月和9月达到两个极大值;无论就海表面温度还是深度而言,该暖池分别存在一或两个强度中心。第二,尽管印度洋—太平洋暖池中间被南亚大陆所间隔,但是暖池上空对流层大气运动对于暖池的季节变化却是作为一个整体响应的。

关键词：印度洋-太平洋暖池季节变化大气环流形式

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埃默里冰架前缘水的特性和海流结构

极地研究 2005年第2期17卷 139-148页

作者：陈红霞潘增弟矫玉田刘娜项宝强中国科学院海洋研究所中国极地研究中心上海200136 国家海洋局第一海洋研究所海洋环境与数值模拟国家海洋局重点实验室青岛266061

本文利用中国第19次南极科学考察普里兹湾内埃默里冰架前缘水域观测的LADCP、 CTD资料,研究并分析了普里兹湾内埃默里冰架前缘水域水的温、盐特性和海流结构。资料显示,在冰架前缘的水域中存在着四种典型的夏季水团;流速分布显示出东进... 详细信息

本文利用中国第19次南极科学考察普里兹湾内埃默里冰架前缘水域观测的LADCP、 CTD资料,研究并分析了普里兹湾内埃默里冰架前缘水域水的温、盐特性和海流结构。资料显示,在冰架前缘的水域中存在着四种典型的夏季水团;流速分布显示出东进西出的特征。此外在普里兹湾内的上层和中层海洋中还存在着逆时针和顺时针方向的涡旋:逆时针涡旋西侧是普里兹湾向冰架入流的位置所在;入流的源地是普里兹湾东侧的沿岸西向流。这些特征涉及到夏季普里兹湾内的环流形式、冰架底部的消融速率和冰架水的生成规模以及冰架区域与冰架外普里兹湾内的水交换形式。

关键词：普里兹湾埃默里冰架冰架水冰架水域前缘结构海流顺时针科学考察

Investigating the Cognitive Control of Social Media-Anxious Users Using a Psychological Experimental Approach

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International Journal of Mental Health Promotion 2023年第7期25卷 863-871页

作者： baoqiang Zhang Ling xiang School of Psychology Shaanxi Normal UniversityXi’an710062China Shaanxi Provincial Key Laboratory of Behavior and Cognitive Neuroscience Shaanxi Normal UniversityXi’an710062China School of Psychology Jiangxi Normal UniversityNanchang330022China Laboratory of Psychology and Cognition Science of Jiangxi Jiangxi Normal UniversityNanchang330022China

Social media has become increasingly popular and is now a significant tool for daily communication for many *** use of social media can cause anxiety and have detrimental impacts on mental *** impairment is more likely to affect individuals with *** the cognitive abilities and mental health of social media users requires the development of new *** study employed the AX-Continuous Performance Test(AX-CPT)paradigm and the Stroop paradigm to study the cognitive control characteristics of trait anxiety,drawing on psychological experimental *** studies on whether trait anxiety impairs cognitive control remain controversial,possibly because cognitive control is viewed as a *** may also be due to the motivational effect of anxiety,which compensates for the impairment of cognitive control caused by anxiety through the recruitment of cognitive *** the mental health and cognitive control traits of anxious social media users can be improved by using the Dual Mechanisms of Cognitive Control Account,which divides cognitive control into proactive and reactive *** demonstrate that trait anxiety has an impact on both proactive and reactive control,while working memory load did not modulate the effect of trait anxiety on cognitive *** results support the attentional control theory and provide a new approach to studying the mental health of social media users.

关键词： Social media anxiety cognitive control mental health

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南大洋增暖及其气候影响

Science Bulletin 2023年第9期68卷 946-960,M0004页

作者：蔡文炬高立宝罗义勇李熙晨郑小童张学斌程旭华贾凡 Ariaan Purich Agus Santoso 杜岩 David MHolland 石佳睿项宝强谢尚平 Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Physical Oceanography Ocean University of ChinaQingdao 266100China Laboratory for Ocean and Climate Dynamics Pilot National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Southern Hemisphere Oceans Research Commonwealth Scientific and Industrial Research Organisation(CSIRO)Oceans and AtmosphereHobart 7004Australia First Institute of Oceanography and Key Laboratory of Marine Science and Numerical Modeling Ministry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and TechnologyQingdao 266237China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China College of Oceanography Hohai UniversityNanjing 210098China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Climate Change Research Centre University of New South WalesSydney 2052Australia Australian Research Council Centre of Excellence for Climate Extremes University of New South WalesSydney 2052Australia State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory Guangzhou 511458China Courant Institute of Mathematical Sciences New York UniversityNew York NY 10012USA Woods Hole Oceanographic Institution Woods Hole MA 02543USA NOAA/Geophysical Fluid Dynamics Laboratory Princeton NJ 08540USA University Corporation for Atmospheric Research Boulder CO 80307USA Scripps Institution of Oceanography University of California San DiegoLa Jolla CA 92093USA

过去几十年南大洋在南极平流层臭氧消耗和大气二氧化碳浓度增加的共同作用下大幅增暖,显著影响着南极冰架和冰盖的融化、海平面上升、南北半球的降水分配以及热带海洋和大气环流等,引发了深远的气候效应.全球变暖背景下南大洋西风表现... 详细信息

过去几十年南大洋在南极平流层臭氧消耗和大气二氧化碳浓度增加的共同作用下大幅增暖,显著影响着南极冰架和冰盖的融化、海平面上升、南北半球的降水分配以及热带海洋和大气环流等,引发了深远的气候效应.全球变暖背景下南大洋西风表现为极向加强,同时进入南大洋的热辐射和淡水通量持续增加,由此上翻的海水可吸收更多的热量和碳,经由更强的平均流向北输送,更多地在45°S附近海域下沉并存储.当前对南大洋增暖背后诸多复杂的物理过程仍缺乏足够的理解,比如来自冰架、冰盖及海洋涡旋的作用、热带-极地相互作用、南大洋本身对全球变暖的响应等,尤其是有限的观测数据和较低分辨率的模式无法准确呈现快速变化的物理现象和机理.因此,南大洋的未来增暖存在很大的不确定性且可能长期持续,但近期的进展为深入认知南大洋增暖及其气候影响奠定了坚实的基础.

关键词：平流层臭氧南大洋物理现象物理过程全球变暖热带海洋南北半球低分辨率

Model Design for AMT Data Inversion

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Open Journal of Geology 2017年第3期7卷 420-428页

作者： Shancong Yao Ruliang Zhang baoqiang Qiao Hanping Wan xiang Yu School of Geophysics and Information Technology China University Geosciences (Beijing) Beijing China CNNC Key Laboratory of Uranium Resource Exploration and Evaluation Technology Beijing Research Institute of Uranium Geology Beijing China

By analyzing the characters of the mainstream commercial magnetotelluric inversion softwares in dealing with audio magnetotelluric data, a dynamic model-making method for inversion has been developed based on the observed AMT data. This method focusing on model domain can adjust mesh’s scale and model’s dimension depending on the field data just with a few parameters. By this, it is convenient to study the geo-electrical anomalies variations of different scale or dimensional models. Applying such model-making technique into the known hardrock geological setting, it is easy to obtain a new geo-electrical model which agrees with the resistivity curves of core samples better than before. It is demonstrated that this can increase the recognition of the resistivity contrast and deserves studying further.

关键词： AMT Exploration Making-Model Based on AMT Data Geo-Electric Structure