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| 1 | Observation analysis on characteristics of formation,evolution and transition of a long-lasting severe fog and haze episode in North China显示文摘An unusual fog and haze event lasted for one week took place during 1–7 December,2011 over North China.To investigate the characteristics and mechanism of formation,evolution,and transition of the fog and haze event,we studied the microphysical properties such as aerosol,cloud condensation nuclei(CCN),fog droplet spectrum and liquid water content(LWC),as well as horizontal visibility and boundary layer properties,using the data collected in the Project of Low-Visibility Weather Monitoring and Forecasting in the Beijing-Tianjin region.The results indicate that the long-lasting fog and haze event occurred in a high pressure weather system and calm wind condition.The stable boundary-layer structure resulted from temperature inversions that were built by warm advection and radiation cooling provided a favorable condition for the accumulation of polluted aerosols and the formation and development of the fog and haze event.In particular,the continuous southerly wet flow advection made the process a persistent and long-lasting event.The horizontal visibility was almost below 2 km in the whole process,and the lowest visibility was only 56 m.The average LWC was about 10-3 g m-3,and the maximum LWC reached 0.16 g m-3.The aerosol number concentration was more than 10000 cm-3,and its mass concentration ranged from 50 to 160 -g m-3.The further study shows that the fog and haze event experienced three main processes in different intensities during the whole period,each process could be divided into three main stages:aerosol accumulation,transition and mixture of aerosol and fog,and dissipation.Each stage had different physical features:the aerosol accumulation stage was characterized by the increase of aerosol number concentration in Aitken nuclei and accumulation mode sequentially.In the transition and mixing stage of fog and haze,the latent heating produced by fog droplet condensation process and high aerosol number concentration condition intensified the Brownian coagulation process,which induced the small size of aerosols to become larger ones and enhanced the CCN activation process,thereby promoting the explosive development of the fog event.The ratio of aerosol activated to CCN reached 17%,and the ratio of CCN converted to fog droplet exceeded 100%,showing an explosively broadening of fog droplet spectrum.The decrease and dissipation of the fog was caused by an increased solar radiation heating or the passage of cold frontal system. | GUO LiJun GUO XueLiang FANG ChunGang ZHU ShiChao | 2015 | Science China Earth Sciences2015，58，3： | 22 |
| 2 | Advances in Cloud Physics and Weather Modification in China显示文摘The capabilities of cloud-resolving numerical models, observational instruments and cloud seeding have improved greatly over recent years in China. The subject of this review focuses on the main progresses made in China in the areas of cloud modeling, field observations, aerosol–cloud interactions, the effects of urbanization on cloud and precipitation, and weather modification.Well-equipped aircraft and ground-based advanced Doppler and polarized radars have been rapidly applied in cloudseeding operations. The combined use of modern techniques such as the Global Positioning System, remote sensing, and Geographical Information Systems has greatly decreased the blindness and uncertainties in weather-modification activities.Weather-modification models based on state-of-the-art cloud-resolving models are operationally run at the National Weather Modification Centre in China for guiding weather-modification programs.Despite important progress having been made, many critical issues or challenges remain to be solved, or require stronger scientific evidence and support, such as the chain of physical events involved in the effects induced by cloud seeding. Current important progresses in measurements and seeding techniques provide the opportunity and possibility to reduce these deficiencies. Long-term scientific projects aimed at reducing these key uncertainties are extremely urgent and important for weather-modification activities in China. | GUO Xueliang FU Danhong LI Xingyu HU Zhaoxia LEI Henchi XIAO Hui HONG Yanchao | 2015 | Advances in Atmospheric Sciences2015，32，2： | 16 |
| 3 | Distribution and origin of aerosol and its transform relationship with CCN derived from the spring multi-aircraft measurements of Beijing Cloud Experiment(BCE)显示文摘The atmospheric aerosol distribution,source and relationship with cloud condensation nuclei(CCN) observed during the Beijing Cloud Experiment(BCE) are analyzed.The results show that the high number concentrations of aerosol mainly distributed below 4500 m,and the magnitude could reach to 103 cm 3.Above 4500 m,the aerosol number concentrations decreased to 101 cm 3 as the altitude increases,and the aerosol mean diameters were between 0.16 and 0.19 μm.Below 4500 m,the number size distributions of aerosol showed a bimodal(multimodal) mode,and an unimodal mode above it.Due to the different sources of aerosol,the conversion ratios of aerosol to CCN were less than 20% below 4500 m,and reached 50% above the level at 0.3% supersaturation.The back trajectories showed that aerosols at higher levels above 4500 m were strongly affected by large-size particles and those below 4500 m were strongly affected by local or regional pollution.Based on observations,a relationship between the CCN number concentration and aerosol number concentration is established. | LU GuangXian GUO XueLiang | 2012 | Chinese Science Bulletin2012，57，19： | 14 |
| 4 | Land-surface processes and summer-cloud-precipitation characteristics in the Tibetan Plateau and their effects on downstream weather:a review and perspective显示文摘Correct understanding of the land-surface processes and cloud-precipitation processes in the Tibetan Plateau(TP)is an important prerequisite for the study and forecast of the downstream activities of weather systems and one of the key points for understanding the global atmospheric movement.In order to show the achievements that have been made,this paper reviews the progress on the observations for the atmospheric boundary layer,land-surface heat fluxes,cloud-precipitation distributions and vertical structures by using ground-and space-based multiplatform,multisensor instruments and the effect of the cloud system in the TP on the downstream weather.The results show that the form drag related to the topography,land-atmosphere momentum and scalar fluxes is an important part of the parameterization process.The sensible heat flux decreased especially in the central and northern TP caused by the decrease in wind speeds and the differences in the ground-air temperatures.Observations show that the cloud and precipitation over the TP have a strong diurnal variation.Studies also show the compressed-air column in the troposphere by the higher-altitude terrain of the TP makes particles inside clouds vary at a shorter distance in the vertical direction than those in the non-plateau area so that precipitation intensity over the TP is usually small with short duration,and the vertical structure of the convective precipitation over the TP is obviously different from that in other regions.In addition,the influence of the TP on severe weather downstream is preliminarily understood from the mechanism.It is necessary to use model simulations and observation techniques to reveal the difference between cloud precipitation in the TP and non-plateau areas in order to understand the cloud microphysical parameters over the TP and the processes of the land boundary layer affecting cloud,precipitation and weather in the downstream regions. | Yunfei Fu Yaoming Ma Lei Zhong Yuanjian Yang Xueliang Guo Chenghai Wang Xiaofeng Xu Kun Yang Xiangde Xu Liping Liu Guangzhou Fan Yueqing Li Donghai Wang | 2020 | National Science Review2020，7，3： | 10 |
| 5 | The formation process and cloud physical characteristics for a typical downburstproducing thunderstorm in Beijing显示文摘The formation process and characteristics ofcloud physical structure of a severe thunderstorm accompa-nied with strong wind on 23 August, 2001 in Beijing wasstudied using PSU/NCAR mesoscale model ( MM5) couplingwith a severe storm model with hail-bin microphysics. Theresults show that the specific topography and distributionfeatures of cold/warm current in the Beijing region playedprominent roles in forming, developing and maintaining thesevere storm. Due to solar radiation heating and topographiclifting, the convective cells were easily formed when thewesterly airflow passed over high mountainous regions inBeijing. The warm and wet air entered the cloud from itsfrontage and enhanced the convection, and formed a largeamount of graupel/hail particles at the middle and upperportion of the clouds. The precipitation was primarilyformed due to melting of graupel/hail particles. The strongdowndraft was mainly produced by negative buoyancy dueto loading, melting of graupel/hail particles as well asevaporative cooling of rain water. The divergent airflow in-duced by the strong downdraft led to the disastrous burstwinds at the surface and also forced lifting of warm and wetairflow in the moving direction of the storm and formed newclouds that further promoted and maintained the storm de-velopment. | GUO Xueliang FU Danhong Institute of Almospherie Physics, Chinese Academy of Sciences, Beijing 100029. China | 2003 | Chinese Science Bulletin2003，48，S2： | 5 |
| 6 | The Tibetan Plateau Surface–Atmosphere Coupling System and Its Weather and Climate Effects: The Third Tibetan Plateau Atmospheric Science Experiment显示文摘The Tibetan Plateau(TP) is a key area affecting forecasts of weather and climate in China and occurrences of extreme weather and climate events over the world. The China Meteorological Administration, the National Natural Science Foundation of China, and the Chinese Academy of Sciences jointly initiated the Third Tibetan Plateau Atmospheric Science Experiment(TIPEX-Ⅲ) in 2013, with an 8–10-yr implementation plan. Since its preliminary field measurements conducted in 2013, routine automatic sounding systems have been deployed at Shiquanhe, Gaize, and Shenzha stations in western TP, where no routine sounding observations were available previously. The observational networks for soil temperature and soil moisture in the central and western TP have also been established. Meanwhile, the plateau-scale and regional-scale boundary layer observations, cloud–precipitation microphysical observations with multiple radars and aircraft campaigns, and tropospheric–stratospheric air composition observations at multiple sites, were performed. The results so far show that the turbulent heat exchange coefficient and sensible heat flux are remarkably lower than the earlier estimations at grassland, meadow, and bare soil surfaces of the central and western TP. Climatologically, cumulus clouds over the main body of the TP might develop locally instead of originating from the cumulus clouds that propagate northward from South Asia. The TIPEX-Ⅲ observations up to now also reveal diurnal variations, macro-and microphysical characteristics, and water-phase transition mechanisms, of cumulus clouds at Naqu station. Moreover, TIPEX-Ⅲ related studies have proposed a maintenance mechanism responsible for the Asian 'atmospheric water tower' and demonstrated the effects of the TP heating anomalies on African, Asian, and North American climates. Additionally, numerical modeling studies show that the Γ distribution of raindrop size is more suitable for depicting the TP raindrop characteristics compared to the M–P distribution, the overestimation of sensible heat flux can be reduced via modifying the heat transfer parameterization over the TP, and considering climatic signals in some key areas of the TP can improve the skill for rainfall forecast in the central and eastern parts of China. Furthermore, the TIPEX-Ⅲ has been promoting the technology in processing surface observations, soundings, and radar observations, improving the quality of satellite retrieved soil moisture and atmospheric water vapor content products as well as high-resolution gauge–radar–satellite merged rainfall products, and facilitating the meteorological monitoring, forecasting, and data sharing operations. | Ping ZHAO Yueqing LI Xueliang GUO Xiangde XU Yimin LIU Shihao TANG Wenming XIAO Chunxiang SHI Yaoming MA Xing YU Huizhi LIU La JIA Yun CHEN Yanju LIU Jian LI Dabiao LUO Yunchang CAO Xiangdong ZHENG Junming CHEN An XIAO Fang YUAN Donghui CHEN Yang PANG Zhiqun HU Shengjun ZHANG Lixin DONG Juyang HU Shuai HAN Xiuji ZHOU | 2019 | Journal of Meteorological Research2019，33，3： | 4 |
| 7 | The roles of microRNAs in regulation of mammalian spermatogenesis显示文摘Mammalian spermatogenesis contains three continuous and organized processes, by which spermatogonia undergo mitosis and differentiate to spermatocytes, follow on meiosis to form haploid spermatids and ultimately transform into spermatozoa. These processes require an accurately, spatially and temporally regulated gene expression patterns. The microRNAs are a novel class of post-transcriptional regulators. Cumulating evidences have demonstrated that microRNAs are expressed in a cell-specific or stage-specific manner during spermatogenesis. In this review, we focus on the roles of microRNAs in spermatogenesis. We highlight that N6-methyladenosine(m6A)is involved in the biogenesis of microRNAs and miRNA regulates the m6A modification on mRNA, and that specific mi RNAs have been exploited as potential biomarkers for the male factor infertility, which will provide insightful understanding of microRNA roles in spermatogenesis. | Xiaoxu Chen Xueliang Li Jiayin Guo Pengfei Zhang Wenxian Zeng | 2017 | Journal of Animal Science and Biotechnology2017，8，4： | 3 |
| 8 | Ciliary defects caused by dysregulation of O-GlcNAc modification are associated with diabetic complications显示文摘Dear Editor Diabetes is a chronic metabolic disease that has become a major epidemic worldwide. High blood glucose is thought to be the primary cause of most devastating long-term complications of diabetes. In addition to strict glycemic control,a number of therapeutics have been used to slow down the progression of diabetic complications. However,a majority of current therapies for most diabetic complications have shown disappointing results in clinical trials.Because these complications arise from a number of pathological processes,targets for early interventions that could lead to effective treatments are largely unknown. | Fan Yu Song Guo Te Li Jie Ran Wei Zhao Dengwen Li Min Liu Xiumin Yan Xiaoyong Yang Xueliang Zhu Jun Zhou | 2019 | Cell Research2019，29，2： | 3 |
| 9 | Below-Cloud Aerosol Scavenging by Different-Intensity Rains in Beijing City显示文摘Below-cloud aerosol scavenging process by precipitation is important for cleaning the polluted aerosols in the atmosphere, and is also a main process for acid rain formation. However, the related physical mechanism has not been well documented and clarified yet. In this paper, we investigated the below-cloud PM_(2.5)(particulate matter with aerodynamic diameter being 2.5 μm or less) scavenging by different-intensity rains under polluted conditions characterized by high PM_(2.5) concentrations, based on in-situ measurements from March 2014 to July 2016 in Beijing city. It was found that relatively more intense rainfall events were more efficient in removing the polluted aerosols in the atmosphere. The mean PM_(2.5) scavenging ratio and its standard deviation(SD) were 5.1% ± 25.7%, 38.5% ± 29.0%,and 50.6% ± 21.2% for light, moderate, and heavy rain events, respectively. We further found that the key impact factors on below-cloud PM_(2.5) scavenging ratio for light rain events were rain duration and wind speed rather than raindrop size distribution. However, the impacts of rain duration and wind speed on scavenging ratio were not important for moderate and heavy rain events. To our knowledge, this is the first statistical result about the effects of rain intensity, rain duration, and raindrop size distribution on below-cloud scavenging in China. | Tian LUAN Xueliang GUO Tianhang ZHANG Lijun GUO | 2019 | Journal of Meteorological Research2019，33，1： | 3 |
| 10 | Comparative Analyses of Vertical Structure of Deep Convective Clouds Retrieved from Satellites and Ground-Based Radars at Naqu over the Tibetan Plateau显示文摘In order to improve understanding of deep convective clouds over the Tibetan Plateau, characteristics of vertical structure of a deep strong convective cloud over Naqu station and a deep weak convective cloud approximately 100 km to the west of Naqu station, which occurred over 1300-1600 Beijing Time (BT) 9 July 2014 during the Third Tibetan Plateau Atmospheric Science Experiment (TIPEX-Ⅲ), are analyzed, based on multi-source satellite data from TRMM, CloudSat, and Aqua, and radar data from ground-based vertically pointing radars (C-band frequency-modulated continuous-wave radar and KA-band millimeter wave cloud radar). The results are as follows.(1) The horizontal scales of both the deep strong and deep weak convective clouds were small (10-20 km), and their tops were high[15-16 km above sea level (ASL)]. Across the level of 0℃ isotherm in the deep strong convective cloud, the reflectivity increased rapidly, suggesting that the melting process of solid precipitation particles through the 0℃ level played an important role. A bright band located at 5.5 km ASL (i.e., 1 km above ground level) appeared during the period of convection weakening.(2) The reflectivity values from TRMM precipitation radar below 11 km were found to be overestimated compared to those derived from the C-band frequency-modulated continuous-wave radar.(3) Deep convective clouds were mainly ice clouds, and there were rich small ice particles above 10 km, while few large ice particles were found below 10 km. The microphysical processes of deep strong and deep weak convective clouds mainly included mixed-phase process and glaciated process, and the mixed-phase process can be divided into two types:one was the rimming process below the level of -25℃(deep strong convective cloud) or -29℃(deep weak convective cloud) and the other was aggregation and deposition process above that level. The latter process was accompanied with fast increase in ice particle effective radius. The above evidence from space-based and ground-based observational data further clarify the characteristics of vertical structure of deep convective clouds over the Tibetan Plateau, and provide a basis for the evaluation of simulation results of deep convective clouds by cloud models. | Hui Wang Xueliang Guo | 2019 | Journal of Meteorological Research2019，33，3： | 2 |
| 11 | 显示文摘 | Yu Hui Guo Xiaojuan Qi Xueliang | 2008 | Material Science2008，19，3： | 1 |
| 12 | Misfolded Gβ is recruited to cytoplasmic dynein by Nudel for efficient clearance显示文摘Gβ γheterodimer 是一个重要信号变换器。Gβ然而,由于它为 Gγ 的要求对错误褶层敏感;并且为合适的合拢的女伴。房间怎么错误褶层 Gβ 处理;(mfGβ) 不是清楚的。这里,我们显示出那 mfGβ能是 polyubiquitinated 并且随后由 proteasome 降级。它与 MG132 在 proteasome 活动的抑制以后在 aggresomes 被扣押。Gβ 的持续激活; γ进一步发信号提高了 ubiquitinated Gβ 的细胞的层次;。而且, Nudel,细胞质的 dynein 的一个管理者,减指导结束的马达的微导管,直接与 unubiquitinated 和 ubiquitinated mfGβ 交往了;。增加两 mfGβ 的层次;并且 Nudel 支持了 Gβ 的协会;与 Nudel 和 dynein,以一种 dynein 依赖的方式导致柔韧的 aggresome 形成。由 RNAi 的 Nudel 的弄空减少了联系 dynein 的 mfGβ,损害了导致 MG132 的 aggresome 形成,并且显著地延长了初生的 Gβ 的半衰期;。因此, cytosolic mfGβ被 Nudel 招募到 dynein 并且为快速的隐遁和降级搬运了到中心体。如此的一个过程不仅消除 mfGβ高效地为蛋白质质量的控制,但是可以也帮助终止 Gβ γ发信号。 | Yihan Wan Zhenye Yang Jing Guo Qiangge Zhang Liyong Zeng Wei Song Yue Xiao Xueliang Zhu | 2012 | Cell Research2012，22，7： | 1 |
| 13 | Ionothermal synthesis and characterization of Li 2 MnSiO 4 /C composites as cathode materials for lithium-ion batteries显示文摘 | Xueliang Li Yunfu Liu Zhenghui Xiao Wei Guo Rui Zhang | 2014 | Ceramics International2014，，1： | 1 |
| 14 | Hail formation and growth in a 3 D cloud model with hail-bin microphysics显示文摘 | Guo Xueliang Huang Meiyuan | 2002 | Atmospheric Research2002，63，： | 1 |
| 15 | Utilizing the full capacity of carbon black as anode for Na-ion batteries via solvent co-intercalation显示文摘 | Wei Xiao Qian Sun Jian Liu Biwei Xiao Per-Anders Glans Jun Li Ruying Li Jinghua Guo Wanli Yang Tsun-Kong Sham Xueliang Sun | 2017 | Nano Research2017，10，12： | 1 |
| 16 | Mesoscale convective precipitation system modified by urbanization in Beijing City 显示文摘 | GUO Xueliang FU Danhong WANG Jing | 2006 | Atmosphereic Research2006，82，： | 1 |
| 17 | Strength Degradation of Wood Members Based on the Correlation of Natural and Accelerated Decay Experiments显示文摘An accelerated decay test and a natural decay test were conducted synchronically to explore the strength degradation of decaying wood members under long-term exposure to natural environment.A natural decay test was carried out to measure the bending strength,compressive strength parallel to grain and modulus of elasticity of the wood members,with 6 groups of specimens decayed in natural environment for 3 to 18 months respectively.To compare with corresponding decay test,in which 6 other groups of specimens were measured under accelerated conditions.The experimental data collected were evaluated by Pearson productmoment for the correlation.The results indicate that the mechanical properties of the accelerated decay were highly correlated with those in natural environment,both of which decreased in the same trend.Under the given test conditions,the mean value of the accelerated decay test data were curve-fitted to achieve the time-dependent degradation model of the bending strength,the compressive strength parallel to grain,as well as the modulus of elasticity.Due to the high correlation,the acceleration shift factors(ASF)of the two tests were derived,where the bending strength of 2.934,the compressive strength parallel to grain of 2.519 and the elastic modulus of 2.346 were employed to formulate the strength degradation models in the long-term natural environment.The results verify that the exponential functionσ=σ0e^(-βt)enables to exactly capture the degradation of the mechanical properties of wood members decayed in natural environment. | Xueliang Wang Qiangang Xu Xiuxin Wang Junhui Guo Wancheng Cao Chun Xiao | 2020 | Journal of Renewable Materials2020，8，5： | 1 |
| 18 | A Numerical Investigation on Microphysical Properties of Clouds and Precipitation over the Tibetan Plateau in Summer 2014显示文摘In order to improve our understanding of microphysical properties of clouds and precipitation over the Tibetan Plateau (TP), six cloud and precipitation processes with different intensities during the Third Tibetan Plateau Atmospheric Science Experiment (TIPEX-Ⅲ) from 3 July to 25 July 2014 in Naqu region of the TP are investigated by using the high-resolution mesoscale Weather Research and Forecasting (WRF) model. The results show unique properties of summertime clouds and precipitation processes over the TP. The initiation process of clouds is closely associated with strong solar radiative heating in the daytime, and summertime clouds and precipitation show an obvious diurnal variation. Generally, convective clouds would transform into stratiform clouds with an obvious bright band and often produce strong rainfall in midnight. The maximum cloud top can reach more than 15 km above sea level and the velocity of updraft ranges from 10 to 40 m s-1. The simulations show high amount of supercooled water content primarily located between 0 and -20℃ layer in all the six cases. Ice crystals mainly form above the level of -20℃ and even appear above the level of -40℃ within strong convective clouds. Rainwater mostly appears below the melting layer, indicating that its formation mainly depends on the melting process of precipitable ice particles. Snow and graupel particles have the characteristics of high content and deep vertical distribution, showing that the ice phase process is very active in the development of clouds and precipitation. The conversion and formation of hydrometeors and precipitation over the plateau exhibit obvious characteristics. Surface precipitation is mainly formed by the melting of graupel particles. Although the warm cloud microphysical process has less direct contribution to the formation of surface precipitation, it is important for the formation of supercooled raindrops, which are essential for the formation of graupel embryos through heterogeneous freezing process. The growth of graupel particles mainly relies on the riming process with supercooled cloud water and aggregation of snow particles. | Jie TANG Xueliang GUO Yi CHANG | 2019 | Journal of Meteorological Research2019，33，3： | 1 |
| 19 | Cumulative Yields of ^127SSn and ^128Sn in the Spontaneous Fission of ^252Cf显示文摘 | Zhao Xin Li Xueliang Guo Jingru | 1993 | J Radioanal Nucl Chem Articles1993，170，1： | 1 |
| 20 | High-performance magnesium ion asymmetric Ppy@FeOOH//Mn3O4 micro-supercapacitor显示文摘Micro-supercapacitors(MSCs)are attractive electrochemical energy storage devices owing to their high power density and extended cycling stability.However,relatively low areal energy density still hinders their practical applications.Here,an asymmetric Mg ion MSC with promising high energy density is fabricated.Firstly,indium tin oxide(ITO)NWs were synthesized by chemical vapor deposition as the excellent current collector.Subsequently,nanostructured Mn_(3)O_(4)and Ppy@FeOOH were deposited on the laser-engraved interdigital structure ITO NWs electrodes as the positive and negative electrodes,respectively.Beneficial from the hierarchical micro-nano structures of active materials,high conductive electron transport pathways,and charge-balanced asymmetric electrodes,the obtained MSC possesses a high potential window of 2.2 V and a high areal capacitance of 107.3 mF cm^(-2)at 0.2 mA cm^(-2).The insitu XRD,VSM,and ex-situ XPS results reveal that the primary energy storage mechanism of Mg ions in negative FeOOH electrode is Mg ions de-/intercalation and phase transition reaction of FeOOH.Furthermore,the MSC exhibits a high specific energy density of 71.18μWh cm^(-2)at a power density of 0.22 mWh cm^(-2)and capacitance retention of 85%after 5000 cycles with unvaried Coulombic efficiency.These results suggest promising applications of our MSC in miniaturized energy storage devices. | Xueliang Lv Yaxiong Zhang Xijuan Li Zhiye Fan Guo Liu Wenjian Zhang Jinyuan Zhou Erqing Xie Zhenxing Zhang | 2022 | Journal of Energy Chemistry2022，31，9： | 1 |
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