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Differences in shale gas accumulation process and its significance in exploration of Lower Silurian Longmaxi Formation in northeast Yunnan

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Frontiers of Earth Science 2021年第2期15卷 343-359页

作者： Shangbin CHEN huijun wang Yang wang Tianguo JIANG Yingkun ZHANG Zhuo GONG Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process of the Ministry of Education China University of Mining and TechnologyXuzhou 221116China School of Resources and Geoscience China University of Mining and TechnologyXuzhou 221116China Yunnan Coalbed Methane Resources Exploration and Development Co. LtdKunming 650031China

The study and exploration practice of shale gas accumulation has focused on the static system comparison,key parameters analysis,reservoir characteristics,enrichment mode ***,the research on dynamic recovery from the original hydrocarbon generation of shale gas to the present gas reservoir is still *** burial history of shale gas reservoir can reflect the overall dynamic process of early formation and later transformation of shale gas *** controls the material basis of shale gas,the quality of reservoir physical properties,preservation conditions,gas content and formation energy,which is the core and foundation of shale gas accumulation process ***,based on the five typical wells data in the Northeast Yunnan,including geochronological data,measured Ro values,core description records,well temperature data,paleoenvironment,paleothermal,etc.,the burial history,thermal evolution history and hydrocarbon generation history of the Lower Silurian Longmaxi Formation were systematically restored via back stripping method and EASY%Ro *** results show that 1)the differences in the burial history of marine shale in Longmaxi Formation can be divided into syncline type and anticline type.2)The shale gas accumulation process can be divided into four stages,namely the sourcereservoir-cap sedimentation period,initial accumulation period,main accumulation period,and adjustment period.3)Based on the characteristics of burial history and preservation conditions,the areas with wide and gentle anticline,far away from the denudation area,and buried deeply with good fault sealing ability are priority structural locations for the shale gas exploration in northeast Yunnan.

关键词： shale gas accumulation process exploration significance Longmaxi Formation(Fm.) northeast Yunnan

Large shift of the Pacific Walker Circulation across the Cenozoic

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National Science Review 2021年第5期8卷 48-56页

作者： Qing Yan Robert Korty Zhongshi Zhang Chris Brierley Xiangyu Li huijun wang Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of Sciences Key Laboratory of Meteorological Disaster Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and Technology Department of Atmospheric Sciences Texas A&M UniversityCollege Station Department of Atmospheric Science School of Environmental StudiesChina University of Geosciences NORCE Research Climate Bjerknes Center for Climate Research Department of Geography University College London Climate Change Research Center Chinese Academy of Sciences

Fluctuations in the Pacific Walker Circulation(PWC), a zonally oriented overturning cell across the tropical Pacific, can cause widespread climatic and biogeochemical perturbations. It remains unknown how the PWC developed during the Cenozoic era, with its substantial changes in greenhouse gases and continental positions. Through a suite of coupled model simulations on tectonic timescales, we demonstrate that the PWC was ～38?broader and ～5% more intense during the Early Eocene relative to present. As the climate cooled from the Early Eocene to the Late Miocene, the width of the PWC shrank, accompanied by an increase in intensity that was tied to the enhanced Pacific zonal temperature gradient. However, the locations of the western and eastern branches behave differently from the Early Eocene to the Late Miocene,with the western edge remaining steady with time due to the relatively stable geography of the western tropical Pacific; the eastern edge migrates westward with time as the South American continent moves northwest. A transition occurs in the PWC between the Late Miocene and Late Pliocene, manifested by an eastward shift(both the western and eastern edges migrate eastward by >12?) and weakening(by ～22%),which we show here is linked with the closure of the tropical seaways. Moreover, our results suggest that rising CO2favors a weaker PWC under the same land-sea configurations, a robust feature across the large spread of Cenozoic climates considered here, supporting a weakening of the PWC in a warmer future.

关键词： Pacific Walker Circulation Cenozoic era paleoclimate modeling

Traditional Meiyu-Baiu has been suspended by global warming

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National Science Review 2024年第7期11卷 126-134页

作者： Zhicong Yin Xiaolei Song Botao Zhou Wenhao Jiang Huopo Chen huijun wang Key Laboratory of Meteorological Disaster Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&Technology Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of Sciences

More than 1000 years, the Meiyu–Baiu have shaped the uniqueness of natural resources, civilization and culture in the Yangtze River Basin of China and the main islands of Japan. In recent decades, frequent rainstorms and droughts have seemingly diminished the misty features of traditional Meiyu–Baiu ***, there is still no consensus on whether their traditional nature is suspended. In this study, we quantitatively demonstrate that the Meiyu–Baiu almost completely lost their traditional features during 1961–2023, ～80% of which can be attributed to anthropogenic warming. Furthermore, in a warmer future,the traditional Meiyu–Baiu will be more unlikely to appear. This study underscores the urgency in adapting to climate shift because destructive extremes are measurably taking the place of mild and maternal rains.

关键词： global warming Meiyu–Baiu extremes human activity culture and civilization

Wave-Breaking Features of Blocking over Central Siberia and Its Impacts on the Precipitation Trend over Southeastern Lake Baikal

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Advances in Atmospheric Sciences 2020年第1期37卷 75-89页

作者： Dorina CHYI Zuowei XIE Ning SHI Pinwen GUO huijun wang Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjing 210044China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Nansen-Zhu International Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Precipitation over southeastern Lake Baikal features a significant decreasing trend in July and August over 1979–2018 and is closely related to blocking occurrence over central Siberia(45°–70°N,75°–115°E).This study investigates the formation and maintenance of anticyclonic and cyclonic wave-breaking(AWB and CWB)blocking events and their climate impacts on precipitation in the southeastern Lake Baikal *** AWB and CWB blocking events are characterized by a cold trough deepening from the sub-Arctic region and a ridge amplifying toward its north over central Siberia,as well as an evident Rossby wave train over midlatitude *** AWB blocking events,the ridge and trough pair tilts clockwise and the wave train exhibits a zonal *** contrast,ridge and trough pair associated with CWB blocking events leans anticlockwise with larger-scale,meridional,and more anisotropic ***,the incoming Rossby wave energy associated with CWB blocking events is more evident than for AWB blocking ***,CWB blocking events are more *** blocking events produce more extensive and persistent precipitation over the southeastern Lake Baikal area than CWB blocking events,in which moderate above-normal rainfall is seen in the decaying periods of blockings.A significant decreasing trend is found in terms of AWB blocking occurrence over central Siberia,which may contribute to the downward trend of precipitation over southeastern Lake Baikal.

关键词： Rossby wave-breaking blocking Siberia precipitation Lake Baikal

Contribution of external forcing to summer precipitation trends over the Qinghai-Tibet Plateau and Southwest China

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Atmospheric and Oceanic Science Letters 2023年第5期16卷 29-34页

作者： Yuying Xiang Tao wang Hongna Xu huijun wang Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science and Technology NanjingChina Climate Change Research Center and Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBejingChina

在过去的60年中,全球气候经历了快速变暖和短暂的变暖停滞,而中国的区域降水也经历了多样而复杂的变化.本文分析了1961年至2014年外强迫因子对青藏高原和中国西南地区夏季降水趋势的影响.观测数据显示,青藏高原的夏季降水呈增加趋势,而... 详细信息

在过去的60年中,全球气候经历了快速变暖和短暂的变暖停滞,而中国的区域降水也经历了多样而复杂的变化.本文分析了1961年至2014年外强迫因子对青藏高原和中国西南地区夏季降水趋势的影响.观测数据显示,青藏高原的夏季降水呈增加趋势,而中国西南地区的夏季降水呈减少趋势,这两个相邻地区的夏季降水变化趋势相反.利用CMIP6数据,本文研究了不同外强迫因子对两个区域夏季降水趋势的影响.结果表明,温室气体对青藏高原夏季降水的增加具有显著影响,而气溶胶在中国西南地区夏季降水减少中起主要作用。

关键词：夏季降水青藏高原中国西南 CMIP6 外强迫因子

Greenland Ice Sheet Contribution to Future Global Sea Level Rise based on CMIP5 Models

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Advances in Atmospheric Sciences 2014年第1期31卷 8-16页

作者： YAN Qing wang huijun Ola M.JOHANNESSEN ZHANG Zhongshi Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Sciences Nansen Environmental and Remote Sensing Center University of the Chinese Academy of Sciences Climate Change Research Center Chinese Academy of Sciences Nansen Scientific Society Bjerknes Centre for Climate Research Uni Research

Sea level rise （SLR） is one of the major socioeconomic risks associated with global warming. Mass losses from the Greenland ice sheet （GrIS） will be partially responsible for future SLR, although there are large uncertainties in modeled climate and ice sheet behavior. We used the ice sheet model SICOPOLIS （Simulation COde for POLythermal Ice Sheets） driven by climate projections from 20 models in the fifth phase of the Coupled Model Intercomparison Project （CMIP5） to estimate the GrlS contribution to global SLR. Based on the outputs of the 20 models, it is estimated that the GrIS will contribute 0-16 （0-27） cm to global SLR by 2100 under the Representative Concentration Pathways （RCP） 4.5 （RCP 8.5） scenarios. The projected SLR increases further to 7-22 （7-33） cm with 2~basal sliding included. In response to the results of the multimodel ensemble mean, the ice sheet model projects a global SLR of 3 cm and 7 cm （10 cm and 13 cm with 2~basal sliding） under the RCP 4.5 and RCP 8.5 scenarios, respectively. In addition, our results suggest that the uncertainty in future sea level projection caused by the large spread in climate projections could be reduced with model-evaluation and the selective use of model outputs.

关键词： sea level rise Greenland ice sheet ice sheet modeling model evaluation

Verification and Improvement of the Ability of CFSv2 to Predict the Antarctic Oscillation in Boreal Spring

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Advances in Atmospheric Sciences 2019年第3期36卷 292-302,340页

作者： Dapeng ZHANG Yanyan HUANG Bo SUN Fei LI huijun wang Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education Nanjing University of Information Science and Technology Nansen–Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Sciences NILU – Norwegian Institute for Air Research

The boreal spring Antarctic Oscillation(AAO)has a significant impact on the spring and summer climate in *** study evaluates the capability of the NCEP's Climate Forecast System,version 2(CFSv2),in predicting the boreal spring AAO for the period *** results indicate that CFSv2 has poor skill in predicting the spring AAO,failing to predict the zonally symmetric spatial pattern of the AAO,with an insignificant correlation of 0.02 between the predicted and observed AAO Index(AAOI).Considering the interannual increment approach can amplify the prediction signals,we firstly establish a dynamical-statistical model to improve the interannual increment of the AAOI(DY AAOI),with two predictors of CFSv2-forecasted concurrent spring sea surface temperatures and observed preceding autumn sea *** dynamical-statistical model demonstrates good capability in predicting DY AAOI,with a significant correlation coeffcient of 0.58 between the observation and prediction during 1983-2015 in the two-year-out ***,we obtain an improved AAOI by adding the improved DY AAOI to the preceding observed *** improved AAOI shows a significant correlation coeffcient of 0.45 with the observed AAOI during ***,the unrealistic atmospheric response to March-April-May sea ice in CFSv2 may be the possible cause for the failure of CFSv2 to predict the *** study gives new clues regarding AAO prediction and short-term climate prediction.

关键词： Antarctic Oscillation interannual-increment approach CFSv2 dynamical–statistical model prediction

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苦荞籽粒结构中酚类及蛋白的组成和分布

中国粮油学报 2025年第1期40卷 50-57页

作者：王惠君武冰冰黄清清郁春蕾陈中伟徐斌江苏大学食品与生物工程学院镇江212013

为了探明苦荞籽粒中呈苦物质的分布,本研究通过手工剥离得到麸皮、胚乳和子叶,采用高效液相色谱、电泳等技术方法,分析酚酸、黄酮、蛋白及芦丁降解酶在3种籽粒结构中的组成和含量,从而探明酚类及呈苦物质在苦荞籽粒结构中的分布。结果表... 详细信息

为了探明苦荞籽粒中呈苦物质的分布,本研究通过手工剥离得到麸皮、胚乳和子叶,采用高效液相色谱、电泳等技术方法,分析酚酸、黄酮、蛋白及芦丁降解酶在3种籽粒结构中的组成和含量,从而探明酚类及呈苦物质在苦荞籽粒结构中的分布。结果表明,苦荞中酚酸物质主要以游离态的原儿茶酸和p-羟基苯甲酸的形式存在于子叶和麸皮中。其中,原儿茶酸富集在子叶中,p-羟基苯甲酸则富集在麸皮中。苦荞中的黄酮以芦丁、槲皮素为主,其中,芦丁主要存在子叶中,槲皮素则存在于麸皮和子叶中,且在前者中含量高于后者。苦荞籽粒结构层中蛋白质以清蛋白和谷蛋白为主,且小分子蛋白的含量较高。麸皮中芦丁降解酶的活性最高,分别是子叶和胚乳中酶活的4倍和13倍。本研究结果将为苦荞的高效分级制粉、脱苦和食品化提供基础数据支撑。

关键词：苦荞麸皮子叶酚类黄酮蛋白芦丁降解酶

Remote impacts from the tropical Indian Ocean on haze pollution in January over the Yangtze River Delta

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Atmospheric and Oceanic Science Letters 2021年第3期14卷 49-53页

作者： Shuwei Xia Zhicong Yin huijun wang Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjingChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiChina Nansen-Zhu International Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

Haze events in the Yangtze River Delta(YRD)region have recently been occurring more frequently and with dramatic damages inflicted on human and ecosystem *** this study,observational analyses and numerical experiments are used to investigate the meteorological conditions associated with haze pollution,with the main emphasis on the impacts of the preceding sea surface temperature(SST)in the tropical Indian Ocean(TIO).The results show that the December SST in the TIO has a significant positive correlation with the number of haze days in January over the YRD,especially during 1999–*** December,the positive SST anomalies in the TIO heat the overlying air,and then in the following January provoke a Matsuno–Gill-like pattern and a series of Rossby wave–like trains in the upper troposphere,transmitting signals to the YRD and downstream through the Sea of Japan and Aleutian *** cyclonic anomalies in the YRD seem to significantly weaken the East Asian jet stream by means of anomalous easterlies,and subsequently affect the climate in the *** the surface,the increased surface air temperature and southerly winds,along with the decreased surface wind speed,accompanied by influences from upstream areas,are conducive to the occurrence of *** observational results were also reproduced well in CESM-LE simulations.

关键词： Sea surface temperature Tropical indian ocean Haze pollution CESM-LE