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| 1 | Air-sea carbon fluxes and their controlling factors in the Prydz Bay in the Antarctic显示文摘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 Xuelong 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 chlorophyll-a in general,suggesting that the partial pressure of carbon dioxide was substantially affected by biological production.The results also indicate that the biological production 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/(m2·d)in the inner part of Prydz Bay,i.e.,a sink of atmospheric CO2,and was 0.62 mmol/(m2·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/(m2·d). | GAO Zhongyong CHEN Liqi GAO Yuan | 2008 | Acta Oceanologica Sinica2008，27，3： | 12 |
| 2 | Characteristics of pCO_(2) in surface water of the Bering Abyssal Plain and their effects on carbon cycle in the western Arctic Ocean显示文摘Characteristics of the pCO2 distribution in surface water of the Bering Abyssal Plain and their relationships with the ambient hydrological conditions were discussed using variations of the partial pressure of CO2 in surface water of the Bering Abyssal Plain and the Chukchi Sea. Data in this study are from a field investigation during the First Chinese National Arctic Research Expedition in 1999. Compared to the high productivity in the Bering Continental Shelf, much lower levels of chlorophyll a were observed in the Bering Abyssal Plain. The effect of hydrological factors on the pCO2 distribution in surface seawater of the Plain in summer has become a major driving force and dominated over biological factors. The Plain also presents a High Nutrient Low Chlorophyll (HNLC). In addition, the pCO2 distribution in the Bering Abyssal Plain has also been found to be influenced from the Bering Slope Current which would transform to the Anadyr Cur- rent when it inflows northwestward over the Plain. The Anadyr Current would bring a high nutrient water to the western Arctic Ocean where local nutrients are almost depleted in the surface water during the summer time. Resupplying nutrients would stimulate the growth of phytoplankton and enhance capacity of absorbing atmospheric CO2 in the surface water. Otherwise, in the Bering Sea the dissolved inorganic carbon brought from freshwater are not deposited down to the deep sea water but most of them would be transported into the western Arctic Ocean by the Alaska Coastal Current to form a carbon sink there. Therefore, the two carbon sinks in the western Arctic Ocean, one carried by the Anadyr Current and another by the Alaska Costal Current, will impli- cate the western Arctic Ocean in global change. | CHEN Liqi1,2,GAO Zhongyong1,3,WANG Weiqiang3 & YANG Xulin1,3 1.Key Lab of Global Change and Marine-Atmospheric Chemistry,State Oceanic Administration,Xiamen 361005,China 2.Chinese Arctic and Antarctic Administration,Beijing 100860,China 3.Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China Correspondence should be addressed to Chen Liqi(email: Lqchen@soa.gov.cn) | 2004 | Science China Earth Sciences2004，47，11： | 11 |
| 3 | Overview of China's Antarctic research progress 1984–2016显示文摘It is more than 30 years since the first Chinese National Antarctic Research Expedition(CHINARE) landed in Antarctica in 1984, representing China's initiation in polar research. This review briefly summarizes the Chinese Antarctic scientific research and output accomplished over the past 30 years. The developments and progress in Antarctic research and the enhancement of international scientific cooperation achieved through the implementation of the CHINARE program have been remarkable. Since the 1980 s, four permanent Chinese Antarctic research stations have been established successively and 33 CHINAREs have been completed. The research results have been derived from a series of spatiotemporal observations in association with various projects and multidisciplinary studies in the fields of oceanography, glaciology, geology, geophysics, geochemistry, atmospheric science, upper atmospheric physics, Antarctic astronomy, biology and ecology, human medicine, polar environment observation, and polar engineering. | CHEN Liqi LIU Xiaohan BIAN Lingen CHEN Bo HUANG Hongliang HU Hongqiao LUO Wei SHI Guitao SHI Jiuxin XU Chengli YANG Guang ZHAO Yue ZHANG Shaohua | 2017 | Advances in Polar Science2017，28，3： | 9 |
| 4 | The investigation on particulate organic carbon fluxes with disequilibria between thorium-234 and uranium-238 in the Prydz Bay,the Southern Ocean显示文摘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/(m3·d) for the particulate thorium-234 and 0.44~0.65 Bq/(m3·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. | HE Jianhua MA Hao CHEN Liqi XIANG Baoqiang ZENG Xianzhang YINMingduan ZENG Wenyi | 2008 | Acta Oceanologica Sinica2008，27，2： | 8 |
| 5 | Review of CHINARE chemical oceanographic research in the Southern Ocean during 1984–2016显示文摘Between 1984 and 2016, China executed 33 Antarctic cruises with the icebreaker R/V Xuelong, which have provided opportunities for Chinese scientists to investigate the status and changes of the Southern Ocean. Research in chemical oceanography constitutes one of the primary missions of the Chinese National Antarctic Research Expedition(CHINARE). This paper reviews nearly 30 years of Chinese Antarctic expeditions, focusing on the major progress achieved in chemical oceanographic research. Specifically, the sea-surface distributions and air–sea fluxes of CO_2 and N_2O are considered, and the transport, flux, and budget of organic matter are investigated based on isotopes in the Southern Ocean, especially in Prydz Bay. In addition, the nutrient distribution and deep-water particle export in Prydz Bay and the study of aerosol heavy metal characteristics are considered. Finally, the prospects for future Chinese Antarctic chemical oceanographic research are outlined. | CHEN Liqi CHEN Min ZHAN Liyan QI Di GAO Zhongyong WANG Jianjun XU Suqing CHEN Kui ZENG Jian ZHANG Run | 2017 | Advances in Polar Science2017，28，2： | 6 |
| 6 | Radioactive source terms for the Fukushima nuclear accident显示文摘大量放射性在 2011 在日本在 Fukushima 原子事故(FNA ) 以后被释放进环境。这放射性在全球环境上有重要影响,并且关于它的效果有公共担心。对 FNA 和环境补习的随后的评价正在证明要求是长、复杂的任务。评价为 FNA 基于放射性的来源术语,它决定原子事故引起的损坏的水平。我们从三个方面调查了放射性的来源术语:放射性核种的数量和作文;这项活动和放射性核种的原子比率;并且有另外的历史的事件的比较。放射性的全部的数量,排除放射性的高贵气体(85 Kr 和 133 Xe ) ,由 FNA 释放了那中的大约 10% 个被切尔诺贝利原子事故在 1986 释放并且 < 从空气的 1 全球放射性尘埃原子爆炸。然而, FNA 以海洋的环境的放射性的污染是最严重的原子事故。在 FNA 以后执行的恢复行动被评估了, FNA 的环境影响被讨论。 | LIN WuHui CHEN LiQi YU Wen MA Hao ZENG Zhi ZENG Shi | 2016 | Science China Earth Sciences2016，59，1： | 5 |
| 7 | ^(234)Th/^(238)U disequilibrium and particulate organic carbon export in the northwestern South China Sea显示文摘234 Th was utilized as a tracer of particulate organic carbon (POC) export in the northwestern South China Sea (SCS) on the basis of the data collected at four stations during a spring cruise.Depth profiles of dissolved and particulate 234 Th activities were measured in the upper 60 m,showing a significant deficit relative to 238 U over the investigated stations.A stratified structure of 234 Th-238 U disequilibrium was in general observed in the upper 60 m water column,indicating that the euphotic zone of the northwestern SCS in this reason can be divided into two layers,an upper and lower layer,with different export rates.POC export fluxes were estimated from a one-dimensional steady state model of 234 Th fluxes in combination with the measurement of POC/ 234 Th ratios on suspended particles.The POC export in this region ranged from 8.2 to 20.0 mmol/(m 2 · d),with an average of 16.0 mmol/(m 2 · d),and was slightly higher than those previously reported in the southern SCS. | MA Hao ZENG Zhi YU Wen HE Jianhua CHEN Liqi CHENG Jianping YIN Mingduan ZENG Shi | 2011 | Acta Oceanologica Sinica2011，30，3： | 5 |
| 8 | Equilibrator-based measurements of dissolved methane in the surface ocean using an integrated cavity output laser absorption spectrometer显示文摘A new off-axis integrated cavity output spectroscopy(ICOS) is coupled to Weiss equilibrator for continuous highresolution 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 | LI Yuhong ZHAN Liyang ZHANG Jiexia CHEN Liqi | 2015 | Acta Oceanologica Sinica2015，34，6： | 4 |
| 9 | Hardware Design and Test of a Gear-Shifting Control System of a Multi-gear Transmission for Electric Vehicles显示文摘The performance of electric vehicles is affected by the shift quality of multi-gear transmission.The realization of dual-target tracking control requires the transmission control unit(TCU)to accurately measure and process the input signals of the gear-shifting control system and precisely control the drive motor torque and the position of shift motors.An electric-vehicle-dedicated TCU was designed to meet the above design requirements.Its function modules included a single-chip control circuit,shift position signal sampling circuit,signal conditioning circuit of the rotational speed and angle,controller area network communication circuit,and shift motor drive circuit.A hardware-in-the-loop simulation test system showed that the TCU design scheme met measurement accuracy requirements and coordinated the actions of the shift actuator and motor control unit to achieve fast and smooth shifting before the road test.The power interruption time of the shifting process was within 350 ms.The reliability of the TCU design was further verified in a 150,000-km vehicle road test. | Feng Tian Liqi Sui Yuanfan Zeng Bo Li Xingyue Zhou Lijun Wang Hongxu Chen | 2019 | Automotive Innovation2019，2，3： | 3 |
| 10 | The role of the Arctic and Antarctic and their impact on global climate change:Further findings since the release of IPCC AR4,2007显示文摘Changes in the climate of the Arctic and of the Antarctic have been of great concern to the international scientific and social communities since the release in 2007 of the Intergovernmental Panel on Climate Change Fourth Assessment Report (IPCC AR4).Since then, many new findings have been reported from observations and research carried out in the Arctic and Antarctic during the fourth International Polar Year (IPY).There is evidence that global warming is inducing rapid changes in the Arctic and Antarctic, in both a quantitative and qualitative sense, and that these regional changes could be used as indicators of global climate change.Declining Arctic sea ice could affect winter snowfall across much of the Northern Hemisphere by bringing harsher winters.Projections suggest that summertime Arctic sea ice will disappear by 2037.By the 2070s, the Antarctic ozone hole will recover to the level of the early 1980s, following the ban on the production of Freon earlier this century.With the loss of the shielding effect of the ozone hole, Antarctic surface temperatures will increase, ice sheets in East Antarctica will begin to melt, and the Antarctic sea ice will retreat.Therefore, sea level rise will become an increasingly serious issue this century.As sea surface temperature rises, the Southern Ocean will become less effective as a sink for atmospheric CO2 and the increase of surface CO2 will be faster than that in the atmosphere.Increased surface CO2 would lead to ocean acidification and affect ecological systems and food chains. | CHEN Liqi | 2013 | Advances in Polar Science2013，24，2： | 3 |
| 11 | Seasonal variations of sulfur aerosols at Zhongshan Station, East Antarctica显示文摘Observations of atmospheric methane-sulfonic acid(MSA) and non-sea-salt sulfate(nss-SO42-) from December 2010 to November 2011 at Zhongshan Station are presented in this paper. MSA and nss-SO42- average concentrations were 24.2 ± 37.9 ng·m-3(0.5–158.3 ng·m-3) and 53.0 ± 82.6 ng·m-3(not detected [n.d.]) – 395.4 ng·m-3), respectively. Strong seasonal variations of MSA and nss-SO42-, with maxima in austral summer and minima in winter, were examined. The high concentrations of sulfur compounds in December may be attributed the dimethyl sulfide(DMS) emissions from the marginal ice zone, when open water near the sampling site was important in impacting the sulfur species of January and February at Zhongshan Station. In austral winter, there was almost no phytoplanktonic activity in offshore waters, and atmospheric sulfur compounds likely had long-range transport sources. | ZHANG Miming CHEN Liqi LIN Qi WANG Yanmin | 2015 | Advances in Polar Science2015，26，3： | 2 |
| 12 | Characteristics of trace metals in marine aerosols and their source identification over the Southern Ocean显示文摘Atmospheric trace metals(Cu, Zn, Cd, Pb, Fe, V, and Cr), As, Al and Na in marine aerosols were studied over the Southern Ocean during the 28 th Chinese National Antarctic Research Expedition. Fe was the most abundant of the analyzed trace metals, with an average concentration of 28.824 ng?m-3. V and Zn concentrations were also high, and their average concentrations were 5.541 ng?m-3 and 2.584 ng?m-3, respectively. Although sea spray significantly influenced the marine aerosol particles measured(Na had the highest concentrations of the analyzed elements, with an average concentration of 2.65 μg?m-3), multivariate analyses(enrichment factor and principal components analysis) indicated that most of the elements were not associated with oceanic sources. Over the Southern Ocean, Fe, Cd, As, Al and Cr in the aerosols mainly originated from crustal sources, while Cu, Pb, V and Zn originated from crustal sources and anthropogenic emissions. The enrichment factors(EFcrust) for most elements(Fe, Al, As, Cr, Cd, Cu and V) were much lower in the northern latitudes, indicating that when the sampling occurred closer to land the concentrations of these elements in aerosols were strongly affected by terrestrial crustal sources. | ZHAO Shuhui CHEN Liqi LIN Hongmei | 2015 | Advances in Polar Science2015，26，3： | 2 |
| 13 | Distributions and air-sea fluxes of CO_2 in the summer Bering Sea显示文摘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 July 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 μatm(1 μatm = 1.013 25×10-1 Pa). The lowest pCO2 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. | CHEN Liqi GAO Zhongyong SUN Heng CHEN Baoshan CAI Wei-jun | 2014 | Acta Oceanologica Sinica2014，33，6： | 2 |
| 14 | Differences in nitrous oxide distribution patterns between the Bering Sea basin and Indian Sector of the Southern Ocean显示文摘Nitrous oxide(N2O) distribution patterns in the Bering Sea basin(BSB) and Indian Sector of the Southern Ocean(ISSO) were described and compared. In both sites, the waters were divided into four layers: surface layer, subsurface layer, N2O maximum layer, and deep water. Simulations were made to find out the most important factors that regulate the N2O distribution patterns in different layers of both sites. The results showed that in the surface water, N2O was more understaturated in the ISSO than the BSB. This phenomenon in the surface water of ISSO may result from ice melt water intrusion and northeastward transport of the Antarctic surface water. Results of the rough estimation of air-sea fluxes during the expedition | CHEN Liqi ZHANG Jiexia ZHAN Liyang LI Yuhong SUN Heng | 2014 | Acta Oceanologica Sinica2014，33，6： | 2 |
| 15 | Multiple processes affecting surface seawater N_2O satura-tion anomalies in tropical oceans and Prydz Bay, Antarc-tica显示文摘We analyzed the N2O content of surface seawater sampled from Prydz Bay, Antarctica, on a cruise track between 30°S and 30°N during the twenty-second Chinese National Antarctic Research Expedition during austral summer, 2006. The surface water showed an average pN 2 O value of 311.9±7.6 nL·L -1 (14.1±0.4 nmol·L -1 ), which was slightly undersaturated. The air-sea N 2 O flux in the region was -0.3±0.8 μmol·m -2 ·d -1 ; however, N 2 O in the surface water was oversaturated in most stations along the cruise track. Saturation anomalies were greater than 10%, with a maximum of 54.7% being observed at the Equator, followed by 31% at 10°N in the Sulu Sea. The air-sea fluxes at these locations were 12.4 and 4 μmol·m -2 ·d -1 , respectively. Overall, the results indicated that surface water in Prydz Bay was near equilibrium with atmospheric N 2 O, and that ocean waters in lower latitudes acted as a N 2 O source. Physical processes such as stratification, ice-melt water dilution, and solar radiation dominate the factors leading to N 2 O saturation of surface water of Prydz Bay, while biological production and upwelling are primarily responsible for the N 2 O oversaturation of surface water observed in subtropical and tropical regions along the cruise track. | CHEN Liqi ZHAN Liyang XU Suqing ZHANG Jiexia ZHANG Yuanhui XU Guojie | 2012 | Advances in Polar Science2012，23，2： | 2 |
| 16 | Summertime freshwater fractions in the surface water of the western Arctic Ocean evaluated from total alkalinity显示文摘As a quasi-conservative tracer, measures of total alkalinity (TA) can be utilized to trace the relative fractions of freshwater and seawater. In this study, based on the TA and related data collected during the third Chinese National Arctic Research Expedition (July-September 2008, 3rd CHINARE-Arctic) and the fourth Chinese National Arctic Research Expedition (July- September 2010, 4th CHINARE-Arctic), fractions of sea-ice meltwater, river runoff, and seawater within the surface water of the western Arctic Ocean were determined using salinity and TA relationships. The largest fraction of sea-ice meltwater was found around 75°N within the Canada Basin during both surveys, which is located at the ice edge. Generally, it was found that the frac- tion of river runoff was less than that of sea-ice meltwater. The river runoff, composed mainly of contributions from the Yukon River carried by Bering inflow water and the Mackenzie River, was influenced by the currents, leading to two peak areas of its fraction. Our results show that the dilution effect of freshwater carried by Bering inflow water during the 3rd CHINARE-Arctic in 2008 expedition period may be stronger than that during the 4th CHINARE-Arctic in 2010 expedition period. The peak area of sea-ice meltwater fraction during the 4th CHINARE-Arctic was different from that of the 3rd CHINARE-Arctic, corresponding to their sea-ice condition. | GAO Zhongyong SUN Heng CHEN Liqi ZHANG Fan | 2012 | Advances in Polar Science2012，23，2： | 2 |
| 17 | Co-editing PINK1 and DJ-1 Genes Via Adeno-Associated Virus-Delivered CRISPR/Cas9 System in Adult Monkey Brain Elicits Classical Parkinsonian Phenotype显示文摘Whether direct manipulation of Parkinson’s disease(PD)risk genes in the adult monkey brain can elicit a Parkinsonian phenotype remains an unsolved issue.Here,we used an adeno-associated virus serotype 9(AAV9)-delivered CRISPR/Cas9 system to directly co-edit PINK1 and DJ-1 genes in the substantia nigras(SNs)of two monkey groups:an old group and a middle-aged group.After the operation,the old group exhibited all the classic PD symptoms,including bradykinesia,tremor,and postural instability,accompanied by key pathological hallmarks of PD,such as severe nigral dopaminergic neuron loss(>64%)and evidentα-synuclein pathology in the gene-edited SN.In contrast,the phenotype of their middle-aged counterparts,which also showed clear PD symptoms and pathological hallmarks,were less severe.In addition to the higher final total PD scores and more severe pathological changes,the old group were also more susceptible to gene editing by showing a faster process of PD progression.These results suggested that both genetic and aging factors played important roles in the development of PD in the monkeys.Taken together,this system can effectively develop a large number of genetically-edited PD monkeys in a short time(6–10 months),and thus provides a practical transgenic monkey model for future PD studies. | Hao Li Shihao Wu Xia Ma Xiao Li Tianlin Cheng Zhifang Chen Jing Wu Longbao Lv Ling Li Liqi Xu Wenchao Wang Yingzhou Hu Haisong Jiang Yong Yin Zilong Qiu Xintian Hu | 2021 | Neuroscience Bulletin2021，37，9： | 2 |
| 18 | Evaluation of the net CO_2 uptake in the Canada Basin in the summer of 2008显示文摘The third Chinese National Arctic Research Expedition(CHINARE) was conducted in the summer of 2008.During the survey,the surface seawater partial pressure of CO_2(pCO_2) was measured,and sea water samples were collected for CO_2 measurement in the Canada Basin.The distribution of pCO_2 in the Canada Basin was determined,the influencing factors were addressed,and the air-sea CO_2 flux in the Canada Basin was evaluated.The Canada Basin was divided into three regions:the ice-free zone(south of 77°N),the partially ice-covered zone(77°–80°N),and the heavily ice-covered zone(north of 80°N).In the ice-free zone,pCO_2 was high(320 to 368μatm,1 μatm=0.101 325 Pa),primarily due to rapid equilibration with atmospheric CO_2 over a short time.In the partially ice-covered zone,the surface pCO_2 was relatively low(250 to 270 μatm) due to ice-edge blooms and icemelt water dilution.In the heavily ice-covered zone,the seawater pCO_2 varied between 270 and 300 μatm due to biological CO_2 removal,the transportation of low pCO_2 water northward,and heavy ice cover.The surface seawater pCO_2 during the survey was undersaturated with respect to the atmosphere in the Canada Basin,and it was a net sink for atmospheric CO_2.The summertime net CO_2 uptake of the ice-free zone,the partially ice-covered zone and the heavily ice-covered zone was(4.14±1.08),(1.79±0.19),and(0.57±0.03) Tg/a(calculated by carbon,1Tg=10^(12) g),respectively.Overall,the net CO_2 sink of the Canada Basin in the summer of 2008 was(6.5±1.3) Tg/a,which accounted for 4%–10% of the Arctic Ocean CO_2 sink. | SUN Heng GAO Zhongyong LU Peng XIU Peng CHEN Liqi | 2017 | Acta Oceanologica Sinica2017，36，8： | 2 |
| 19 | Estimation of monthly ai sea CO2 flux in the southern AtLantic and Indian Ocean using in situ and remotely sensed data显示文摘 | Chen Liqi Xu Suqing Gao Zhongyong | 2011 | Remote Sensing of Environment2011，115，： | 1 |
| 20 | Distributions of dissolved inorganic carbon and total alkalinity in the Western Arctic Ocean显示文摘The third Chinese National Arctic Research Expedition (3rd CHINARE-Arctic in 2008) was carried out from July to September 2008. During the survey, numerous sea water samples were taken for CO2 parameter measurement (including total alkalinity TA and total dissolved inorganic carbon DIC).The distribution of CO2 parameters in the Western Arctic Ocean was determined, and the controlling factors are addressed. The ranges of summertime TA, normalized TA (nTA), DIC and normalized DIC (nDIC) in the surface seawater were 1 757-2 229 μmol·kg 1, 2 383-2 722 μmol·kg 1, 1 681-2 034 μmol·kg 1, 2 119-2 600 μmol·kg 1, respectively. Becauseof dilution from ice meltwater, the surface TA and DIC concentrations were relatively low. TA in the upper 100m to the south of 78 N had good correlation with salinity, showing a conservative behavior. The distribution followed the seawater-river mixing line at salinity >30, then followed the seawater mixing line (diluted by river water to salinity = 30) with the ice meltwater. The DIC distribution in the Chukchi Sea was dominated by biological production or respiration of organic matter, whereas conservative mixing dominated the mixed layer TA distribution in the ice-free Canada Basin. | SUN Heng GAO Zhongyong CHEN Liqi ZHANG Fan | 2011 | Advances in Polar Science2011，22，4： | 1 |
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