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南大洋人为二氧化碳的吸收、分布、储存与输运研究进展

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极地研究 2024年第3期36卷 391-405页

作者：张双祁第吴瀛旭汪冰冰陈立奇集美大学极地与海洋研究院福建厦门361021 自然资源部第三海洋研究所大气化学与全球变化重点实验室福建厦门361001 厦门大学海洋与地球学院福建厦门361102

海洋吸收了工业化以来大约30%人为二氧化碳(简称人为碳,Anthropogenic carbon dioxide,Cant)而显著地影响了全球海洋碳源汇格局。据估计,南大洋35°S以南区域吸碳潜力占全球大洋高达40%左右,但该估计也被认为存在着很大的不确定性,主要... 详细信息

海洋吸收了工业化以来大约30%人为二氧化碳(简称人为碳,Anthropogenic carbon dioxide,Cant)而显著地影响了全球海洋碳源汇格局。据估计,南大洋35°S以南区域吸碳潜力占全球大洋高达40%左右,但该估计也被认为存在着很大的不确定性,主要是因为缺乏对Cant在南大洋吸收、分布、储存和输运方面的系统性认知。本文基于国内外有关南大洋碳吸收和储存及输送等数据库和研究,分别从海-气界面CO_(2)通量角度和海洋内部Cant的分布、储存和输送等方面,综述归纳了南大洋开阔大洋区及近岸区碳源汇格局的研究进展;探究目前在南大洋碳汇模型与实测数据存在明显差距原因,以及季节性冰区碳源汇强度估算不确定性较大的问题;讨论了相关方法在人为碳计算中的优点与不足以及影响人为碳储量的主要输送机制。本文将有助于对南大洋海-气CO_(2)通量、源汇格局变异以及输出过程的进一步了解,以及更准确估算南大洋乃至全球海洋碳汇。

关键词：人为碳碳汇碳吸收和分布输运与储存南大洋

Air-sea carbon fluxes and their controlling factors in the Prydz Bay in the Antarctic

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Acta Oceanologica Sinica 2008年第3期27卷 136-146页

作者： GAO Zhongyong chen liqi GAO Yuan Key Laboratory of Global Change and Marine Atmospheric Chemistry of State Oceanic Administration Third Institute of Ocea- nography State Oceanic Administration Xiamen 361005 China Third Institute of Oceanography State Oceanic Administration Xiamen 361005 China Chinese Arctic and Antarctic Administration Beijing 100860 China Department of Earth and Environmental Sciences Rutgers University Newark NJ USA

The Prydz Bay in the Antarctic is an important area in the Southern Ocean due to its unique geographic feature. It plays an important role in the carbon cycle in the Southern Ocean. To investigate the distributions of carbon dioxide in the atmosphere and surface seawater and its air-sea exchange rates in this region, the Chinese National Antarctic Research Expedition （CHINARE） had set up several sections in the Prydz Bay. Here we present the results from the CHINARE-XVI cruises were presented onboard R/V Xue/ong from November 1999 to April 2000 and the main driving forces were discussed controlling the distributions of partial pressure of carbon dioxide. According to the partial pressure of carbon dioxide distributions, the Prydz Bay can be divided into the inside and outside regions. The partial pressure of carbon dioxide was low in the inside region but higher in the outside region during the measurement period. This distribution had a good negative correlation with the concentrations of ehlorophyll-a in general, suggesting that the partial pressure of carbon dioxide was substantially affected by biological production. The results also indicate that the biological produetion is most likely the main driving force in the marginal ice zone in the Southern Ocean in summer. However, in the Antarctic divergence sector of the Prydz Bay （about 64°S）, the hydrological processes become the controlling factor as the sea surface partial pressure of carbon dioxide is much higher than the atmospheric one due to the upwelling of the high DIC CDW, and this made the outside of Prydz Bay a source of carbon dioxide. On the basis of the calculations, the CO2 flux in January （austral summer） was -3.23 mmol/（m^2 · d） in the inner part of Prydz Bay, i.e. , a sink of atmospheric CO2, and was 0.62 mmol/（m^2 · d） in the outside part of the bay, a weak source of atmospheric CO2. The average air-sea flux of CO2 in the Prydz Bay was 2.50 mmol/（m^2 · d）.

关键词： Prydz Bay carbon flux carbon dioxide controlling factors

多塔楼结构间连廊支座方案设计比选及影响分析

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建筑结构 2024年第17期54卷 124-131页

作者：蔡红超陈焰周陈立奇闰淼李维丁梦阳中南建筑设计院股份有限公司武汉430071

某项目地上二层设有环形连廊连接四栋体量差异大、结构形式不同的塔楼及裙房,四栋塔楼两两之间尚有高位连体。重点介绍了环形连廊的结构设计方案,通过对设置不同支座连接方案进行比选分析,研究环形连廊对各塔楼及裙房的影响,找到了对其... 详细信息

某项目地上二层设有环形连廊连接四栋体量差异大、结构形式不同的塔楼及裙房,四栋塔楼两两之间尚有高位连体。重点介绍了环形连廊的结构设计方案,通过对设置不同支座连接方案进行比选分析,研究环形连廊对各塔楼及裙房的影响,找到了对其自身变形可控同时对塔楼影响最小的支座连接方案,并对塔楼及裙房采取有针对性的加强措施。研究表明此方案下环形连廊对各塔楼影响较小,依此方案进行分析和设计,能有效降低结构的复杂程度,避免形成多连体复杂结构。

关键词：连体结构环形连廊支座方案比选弱连接弹塑性时程分析

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先导式正压浓相气力输灰节能提效改造研究

科技创新与生产力 2024年第8期45卷 64-68页

作者：陈立奇杨昱吴超内蒙古大唐国际托克托发电有限责任公司内蒙古呼和浩特010206

针对某电厂1号炉电除尘输灰系统经常出现堵灰现象,且输灰系统流速高、管道磨损量大、漏灰补漏频繁、耗气量大、耗能大、管线磨损跑灰等问题,用先导式栓塞技术对一电场进行整体技术改造,增设了先导式栓塞阀和伴气管道主要结构设计,通过... 详细信息

针对某电厂1号炉电除尘输灰系统经常出现堵灰现象,且输灰系统流速高、管道磨损量大、漏灰补漏频繁、耗气量大、耗能大、管线磨损跑灰等问题,用先导式栓塞技术对一电场进行整体技术改造,增设了先导式栓塞阀和伴气管道主要结构设计,通过对生产过程的技术参数搜集与分析发现:节气方面,一电场在满负荷状态的每分钟用气量节省了80 m^(3),在常规负荷状态的每分钟用气量节省了45 m^(3)。节能方面,在满负荷工况下的年平均用电量减少了270.19万kW·h,折合88.32万元;而在常规负荷工况下,年平均用电量减少了152.38万kW·h,折合49.63万元。利用先导式栓塞技术进行电厂气力输灰改造,能够大大降低生产成本,对电厂生产具有一定的现实意义。

关键词：先导式输灰系统栓塞节能降本

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Equilibrator-based measurements of dissolved methane in the surface ocean using an integrated cavity output laser absorption spectrometer

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Acta Oceanologica Sinica 2015年第6期34卷 34-41页

作者： LI Yuhong ZHAN Liyang ZHANG Jiexia chen liqi Key Laboratory of Global Change and Marine-Atmospheric Chemistry State Oceanic Administration Third Institute of Oceanography State Oceanic Administration

A new off-axis integrated cavity output spectroscopy （ICOS） is coupled to Weiss equilibrator for continuous high- resolution dissolved methane measurement in the surface ocean. The time constant for the equilibrator in freshwater at room temperature is determined via dis-equilibration and re-equilibration experiments. The constant for methane is about 40 min. The system is calibrated using a standard gas of 3.980×10-6, and the precision of the ICOS for methane is 0.07%. This system is equipped onboard to measure the spatial distribution in methane concentrations of South Yellow Sea （SYS） along the cruise track from Shanghai to Qingdao. Result shows that the methane concentration varies from 2.79 to 36.36 nmol/L, reveals a significant pattern of methane source in SYS, and a distinct decreasing trend from south to north. The peak value occurs at the coast area outside mouth of the Changjiang River, likely to be affected by the Changjiang diluted water mass dissolving a large amount of rich in methane. Moreover, all the surface waters are oversaturated, air-to-sea fluxes range from 98.59 to 5 485.35 μmol/（m2·d）（average value （1 169.74±1 398.46） μmol/（m2·d））, indicating a source region for methane to the atmosphere. Key words： methane, equilibrator, off-axis integrated cavity output spectroscopy （ICOS）, South Yellow Sea

关键词： methane equilibrator off-axis integrated cavity output spectroscopy (ICOS) South Yellow Sea

Pollutants identification of ambient aerosols by two types of aerosol mass spectrometers over southeast coastal area, China

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Journal of Environmental Sciences 2018年第2期30卷 252-263页

作者： Jinpei Yan liqi chen Qi Lin Shuhui Zhao Lei Li Key Laboratory of Global Change and Marine-Atmospheric Chemistry Third Institute of Oceanography SOA Xiamen 361005 China Institute of Atmospheric Environment Safety and Pollution Control Jinan University Ouangzhou 510632 China

Two different aerosol mass spectrometers, Aerodyne Aerosol Mass Spectrometer（AMS） and Single Particle Aerosol Mass Spectrometer（SPAMS） were deployed to identify the aerosol pollutants over Xiamen, representing the coastal urban area. Five obvious processes were classified during the whole observation period. Organics and sulfate were the dominant components in ambient aerosols over Xiamen. Most of the particles were in the size range of 0.2–1.0 μm, accounting for over 97% of the total particles measured by both ***, as well as sulfate, measured by AMS were in good correlation with measured by SPAMS. However, high concentration of NH4＋was obtained by AMS, while extremely low value of NH4＋was detected by SPAMS. Contrarily, high particle number counts of NO3-and Clwere given by SPAMS while low concentrations of NO3-and Cl-were measured by AMS. The variations of POA and SOA obtained from SPAMS during event 1 and event 2 were in accordance with the analysis of HOA and OOA given by AMS, suggesting that both of AMS and SPAMS can well identify the organic clusters of aerosol particles. Overestimate or underestimate of the aerosol sources and acidity would be present in some circumstances when the measurement results were used to analyze the aerosol properties, because of the detection loss of some species for both instruments.

关键词： Aerosol Size distribution Chemical composition Aerosol mass spectrometer Aerosol source

Effect of air masses motion on the rapid change of aerosols in marine atmosphere

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Journal of Environmental Sciences 2019年第9期31卷 217-228页

作者： Jinpei Yan Qi Lin Miming Zhang Shuhui Zhao liqi chen Third Institute of Oceanography Ministry of Natural Resources Xiamen 361005 China Key Laboratory of Global Change and Marine-Atmospheric Chemistry Xiamen 361005 China

The impact of air masses motion on marine aerosol properties was investigated using an on-board single particle mass spectrometer(SPAMS) deployed for the determination of single particle size resolved chemical composition over Southeast China Sea. Two aerosol blooms(E1 and E2) were observed during the cruise. High average particle number count occurred in E1(7320), followed by E2(5850), which was more than 100–150 times of the average particle number count during normal periods. Particles were classified as four major sources, including continental source, shipping source, marine source, and transport source based on the mass spectral similarity. Transport source was identified as those particles with high particle number count occurred only during aerosol bloom period. Three sub-types of EC-Ca, OC-Ca, and Al-rich were classified as transport ***-Ca was the dominant particles of the transport source, accounting for more than 70%of the total particles in aerosol bloom events. A uni-modal size distribution in the size range of 0.1–2.0 μm was observed during normal period, while a bimodal distribution with a tiny mode(<0.3 μm) and a coarse mode between 0.4 and 0.6 μm was present during aerosol bloom. The variation of aerosol source is consistent with air masses back trajectories, for the reason that most of the long-range air trajectories are from the ocean,while short air trajectories originate in the continental regions, which means that air masses have a significant impact on the aerosol physical–chemical properties along their tracks.

关键词： Marine aerosol Chemical composition Source apportionment Air masses Single particle aerosol mass spectrometer(SPAMS)

Distributions and air-sea fluxes of CO_2 in the summer Bering Sea

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Acta Oceanologica Sinica 2014年第6期33卷 1-8页

作者： chen liqi GAO Zhongyong SUN Heng chen Baoshan CAI Wei-jun Key Laboratory of Global Change and Marine-Atmospheric Chemistry of State Oceanic Administration Third Institute of OceanographyState Oceanic Administration Department of Marine Sciences University of Georgia

The 3rd Chinese National Arctic Research Expedition （CHINARE-Arctic III） was carried out from July to September in 2008. The partial pressure of CO2 （pCO2） in the atmosphere and in surface seawater were determined in the Bering Sea during luly 11-27, 2008, and a large number of seawater samples were taken for total alkalinity （TA） and total dissolved inorganic carbon （DIC） analysis. The distributions of CO2 parameters in the Bering Sea and their controlling factors were discussed. The pCO2 values in surface seawater presented a drastic variation from 148 to 563 laatm （1 μatm = 1.013 25× 10-1Pa）. The lowest pCOz values were observed near the Bering Sea shelf break while the highest pCO2 existed at the western Bering Strait. The Bering Sea generally acts as a net sink for atmospheric CO2 in summer. The air-sea CO2 fluxes in the Bering Sea shelf, slope, and basin were estimated at -9.4, -16.3, and -5.1 mmol/（m2.d）, respectively. The annual uptake of CO2 was about 34 Tg C in the Bering Sea.

关键词： partial pressure of CO2 CO2 system air-sea CO2 flux Bering Sea

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黄东海大气气溶胶数浓度特征及影响因素研究

海洋环境科学 2024年第1期43卷 64-73页

作者：何源鸿徐国杰陈立奇龚天骄王宇程曾程昱南京信息工程大学中国气象局气溶胶−云−降水重点开放实验室江苏南京210044 集美大学港口与海岸工程学院极地与海洋研究院福建厦门361021

本文根据2022年4月10日至26日我国东部海域大气气溶胶及走航气象的观测数据,对黄东海海域大气气溶胶粒子数浓度的时空分布、粒径谱分布特征以及观测中发生的新粒子生成(NPF)事件进行了研究。结果表明,靠近陆地的江苏沿海地区海洋气溶胶... 详细信息

本文根据2022年4月10日至26日我国东部海域大气气溶胶及走航气象的观测数据,对黄东海海域大气气溶胶粒子数浓度的时空分布、粒径谱分布特征以及观测中发生的新粒子生成(NPF)事件进行了研究。结果表明,靠近陆地的江苏沿海地区海洋气溶胶总数浓度为150.79~313.14个/cm^(3),而远离陆地的远海海域气溶胶总数浓度仅为70个/cm^(3)左右;数浓度谱总体呈双峰分布,靠近陆地的海区峰值更高,且温度、湿度均未与气溶胶数浓度呈线性相关性。通过计算可知,本次航测中NPF事件的生成速率(FR)为0.14~1.45/(cm^(3)·s),生长速率(GR)为2.84~17.00 nm/h。与陆地NPF事件对比,本次海上观测到的核模态气溶胶粒子数浓度要低1~2个数量级,但生成速率和增长速率并无较大差异,因此,核模态气溶胶数浓度及新粒子生成速率并不是新粒子增长过程的主导因素。对观测过程中的一次NPF事件进行研究发现,相对于核模态气溶胶,积聚模态气溶胶数浓度的增加具有延后性。

关键词：黄东海大气气溶胶海洋气溶胶气溶胶粒子谱分布新粒子生成