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| 1 | An examination of summer precipitation over Asia based on TRMM/TMI显示文摘A 6-year dataset of summer monthly mean precipitation derived from Tropical Precipitation Measure-ment Mission (TRMM)-Microwave Imager (TMI) was used to delineate the spatial distribution patterns of precipitation throughout Asian areas, which indicates that there are three rainfall centers located at the northern coast of the Bay of Bengal, the South China Sea and the western equatorial Pacific Warm Pool, respectively. Based upon the analysis of horizontal distribution, the capability of TMI for characterizing terrestrial and maritime precipitation has been evaluated and compared with Global Precipitation Climatology Project (GPCP) dataset. It was found that TMI and GPCP are well consistent with each other, while a few significant differences occur at several regions over land. By investigating rainfall esti-mates over six specific locations in Asia, a systematic underestimation of TMI was demonstrated, which could be explained by the inherent deficiency within TMI terrestrial algorithm relying on scat-tering signal from ice particles in a precipitation system. A further analysis shows that the highly in-homogeneous distribution of rain gauges employed by GPCP contributes a great deal to the significant discrepancy between GPCP and TMI, especially over regions surrounding the Tibetan Plateau where rain gauges are quite scarce. | LIU Qi FU Yunfei | 2007 | Science China Earth Sciences2007，50，3： | 16 |
| 2 | Climatic characteristics of convective and stratiform precipitation over the Tropical and Subtropical areas as derived from TRMM PR显示文摘Climatic characteristics of convective and stratiform precipitation over the Tropical and Subtropical areas are investigated based on the measurements of Tropical Rainfall Measuring Mission's(TRMM) Precipitation Radar(PR) from 1998 to 2007.Results indicate that convective precipitation are distributed mainly over the Intertropical Convergence Zone(ITCZ),the South Pacific Convergence Zone(SPCZ),the Asian Monsoon Region,regions between the South America and the Mid-America,and the Tropical Africa where the frequencies lie between 1% and 2%.But in four seasons,total area fractions of convective precipitation frequencies less than 1% all exceed 85%.The frequencies of stratiform precipitation are much higher than those of convective precipitation,and total area fractions of stratiform precipitation frequencies >1% are over 55% during four seasons.However,frequencies of the two rain types show not only remarkable regionality,but also distinct seasonal variations.Conditional rain rates of convective precipitation range from 6 to 14 mm/h whereas those of stratiform precipitation are smaller than 4 mm/h.Meanwhile,rain tops of convective precipitation are higher than those of stratiform precipitation.The mean profiles of the two rain types show significant latitudinal dependency.And the seasonal variations of precipitation profiles are displayed mainly in the variations of rain tops.The frequencies and conditional rain rates of both rain types over ocean are higher than those over land,but rain tops are just the opposite.Moreover,the seasonal variations of both rain types over ocean are weaker than those over land because of the different stable states of underlying surfaces. | LIU Peng LI ChongYin WANG Yu FU YunFei | 2013 | Science China Earth Sciences2013，56，3： | 11 |
| 3 | Genetic engineering of T cells with chimeric antigen receptors for hematological malignancy immunotherapy显示文摘The host immune system plays an instrumental role in the surveillance and elimination of tumors by recognizing and destroying cancer cells. In recent decades, studies have mainly focused on adoptive immunotherapy using engineered T cells for the treatment of malignant diseases. Through gene engraftment of the patient's own T cells with chimeric antigen receptor(CAR),they can recognize tumor specific antigens effectively and eradicate selectively targeted cells in an MHC-independent fashion.To date, CAR-T cell therapy has shown great clinical utility in patients with B-cell leukemias. Owing to different CAR designs and tumor complex microenvironments, genetically redirected T cells may generate diverse biological properties and thereby impact their long-term clinical performance and outcome. Meanwhile some unexpected toxicities that result from CAR-T cell application have been examined and limited the curative effects. Diverse important parameters are closely related with adoptively transferred cell behaviors, including CAR-T cells homing, CAR constitutive signaling, T cell differentiation and exhaustion. Thus, understanding CARs molecular design to improve infused cell efficacy and safety is crucial to clinicians and patients who are considering this novel cancer therapeutics. In this review, the developments in CAR-T cell therapy and the limitations and perspectives in optimizing this technology towards clinical application are discussed. | Dongdong Ti Yunfei Niu Zhiqiang Wu Xiaobing Fu Weidong Han | 2018 | Science China(Life Sciences)2018，61，11： | 10 |
| 4 | Efficient adiabatic silicon-on-insulator waveguide taper显示文摘A silicon-on-insulator-based adiabatic waveguide taper with a high coupling efficiency and small footprint is presented.The taper was designed to reduce the incidence of mode conversion to higher-order and radiation modes inside the waveguide.In connecting a 0.5-μm-wide output waveguide and a 12-μm-wide input waveguide of a grating coupler,a compact 120-μm-long taper was demonstrated,achieving a transmission of 98.3%.Previously,this transmission level could only be achieved using a conventional linear taper with a length of more than 300μm. | Yunfei Fu Tong Ye Weijie Tang Tao Chu | 2014 | Photonics Research2014，2，3： | 10 |
| 5 | 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 |
| 6 | Extreme Cold Events from East Asia to North America in Winter 2020/21:Comparisons,Causes,and Future Implications显示文摘Three striking and impactful extreme cold weather events successively occurred across East Asia and North America during the mid-winter of 2020/21.These events open a new window to detect possible underlying physical processes.The analysis here indicates that the occurrences of the three events resulted from integrated effects of a concurrence of anomalous thermal conditions in three oceans and interactive Arctic-lower latitude atmospheric circulation processes,which were linked and influenced by one major sudden stratospheric warming(SSW).The North Atlantic warm blob initiated an increased poleward transient eddy heat flux,reducing the Barents-Kara seas sea ice over a warmed ocean and disrupting the stratospheric polar vortex(SPV)to induce the major SSW.The Rossby wave trains excited by the North Atlantic warm blob and the tropical Pacific La Nina interacted with the Arctic tropospheric circulation anomalies or the tropospheric polar vortex to provide dynamic settings,steering cold polar air outbreaks.The long memory of the retreated sea ice with the underlying warm ocean and the amplified tropospheric blocking highs from the midlatitudes to the Arctic intermittently fueled the increased transient eddy heat flux to sustain the SSW over a long time period.The displaced or split SPV centers associated with the SSW played crucial roles in substantially intensifying the tropospheric circulation anomalies and moving the jet stream to the far south to cause cold air outbreaks to a rarely observed extreme state.The results have significant implications for increasing prediction skill and improving policy decision making to enhance resilience in“One Health,One Future”. | Xiangdong ZHANG Yunfei FU Zhe HAN James E.OVERLAND Annette RINKE Han TANG Timo VIHMA Muyin WANG | 2022 | Advances in Atmospheric Sciences2022，39，4： | 7 |
| 7 | FBW7 regulates endothelial functions by targeting KLF2 for ubiquitination and degradation显示文摘F 盒子和 WD 重复包含域 7 (FBW7 ) , E3 ubiquitin ligase SCF FBW7 (SKP1, cullin-1 和 FBW7 的建筑群) ,在各种各样的生理、病理学的过程起重要作用。尽管 FBW7 为脉管的开发被要求,它在内皮细胞层的函数尚待被调查。在这研究,我们证明 FBW7 是 endothelial 功能的一个重要管理者,包括 angiogenesis,白血球粘附和 endothelial 障碍正直。用 RNA 干扰,我们发现 FBW7 的弄空显著地在 vitro 并且在 vivo 损害 angiogenesis。我们识别了锌手指抄写因素 Krü象 ppel 一样因素 2 (KLF2 ) 作为在 endothelial 房间的 FBW7 的一个生理的目标。FBW7 击倒表示在 endothelial 房间导致了内长的 KLF2 蛋白质的累积。调停 FBW7 的 KLF2 破坏被显示在二保存 phosphodegrons 经由肝糖 synthase kinase-3 (GSK3 ) 取决于 KLF2 的 phosphorylation。变异这些 phosphodegron 主题废除了 KLF2 的调停 FBW7 的降级和 ubiquitination。调停 siRNA 显示出的 FBW7 击倒 KLF2 是在 endothelial 的规定的 FBW7 的一个必要目标,这工作。而且,调停 FBW7 的 KLF2 降级被显示为在 teratomas 并且在 zebrafish 开发的 angiogenesis 批评。一起拿,我们的学习在 endothelial 房间移植, angiogenesis,发炎和障碍完整的进程为 FBW7 建议一个角色,并且在 vivo 提供新奇卓见进 KLF2 稳定性的规定。 | Rui Wang Yah Wang Ning Liu Chunguang Ren Cong Jiang Kai Zhang Su Yu Yunfei Chen Hui Tang Qi Deng Cong Fu Yingcong Wang Rong Li Mingyao Liu Weijun Pan Ping Wang | 2013 | Cell Research2013，23，6： | 7 |
| 8 | Aerosol characteristics and impacts on weather and climate over the Tibetan Plateau显示文摘With themostmassive snow and ice globally between 60°S and 60°S ,the Tibetan Plateau(TP),also called the third pole of the world,plays significant roles in the weather,climate and lives in South Asia and East Asia and even the world[1–3].Investigating the variation of weather and the climate system over the TP has long been carried out,which is significant for fresh water supplies for over 1.4 billion people in Asia.Actually,the‘Third Pole Environment’program was initiated to call international efforts to understand both climate and environment changes on the plateau[1],which has already shown rapid warming and intensified cryospheric melt and water cycle. | Chuanfeng Zhao Yikun Yang Hao Fan Jianping Huang Yunfei Fu Xiaoye Zhang Shichang Kang Zhiyuan Cong Husi Letu Massimo Menenti | 2020 | National Science Review2020，7，3： | 7 |
| 9 | Grid-cell Aerosol Direct Shortwave Radiative Forcing Calculated Using the SBDART Model with MODIS and AERONET Observations:An Application in Winter and Summer in Eastern China显示文摘Taking winter and summer in eastern China as an example application, a grid-cell method of aerosol direct radiative forcing(ADRF) calculation is examined using the Santa Barbara DISORT Atmospheric Radiative Transfer(SBDART) model with inputs from MODIS and AERONET observations and reanalysis data. Results show that there are significant seasonal and regional differences in climatological mean aerosol optical parameters and ADRF. Higher aerosol optical depth(AOD)occurs in summer and two prominent high aerosol loading centers are observed. Higher single scattering albedo(SSA) in summer is likely associated with the weak absorbing secondary aerosols. SSA is higher in North China during summer but higher in South China during winter. Aerosols induce negative forcing at the top of the atmosphere(TOA) and surface during both winter and summer, which may be responsible for the decrease in temperature and the increase in relative humidity.Values of ADRF at the surface are four times stronger than those at the TOA. Both AOD and ADRF present strong interannual variations; however, their amplitudes are larger in summer. Moreover, patterns and trends of ADRF do not always correspond well to those of AOD. Differences in the spatial distributions of ADRF between strong and weak monsoon years are captured effectively. Generally, the present results justify that to calculate grid-cell ADRF at a large scale using the SBDART model with observational aerosol optical properties and reanalysis data is an effective approach. | Yunfei FU Jiachen ZHU Yuanjian YANG Renmin YUAN Guosheng LIU Tao XIAN Peng LIU | 2017 | Advances in Atmospheric Sciences2017，34，8： | 6 |
| 10 | Structural Characteristics of Atmospheric Temperature and Humidity inside Clouds of Convective and Stratiform Precipitation in the Rainy Season over East Asia显示文摘In this study, a merged dataset constructed from Tropical Rainfall Measuring Mission precipitation radar rain products and Integrated Global Radiosonde Archive data is used to investigate the thermal structural characteristics of convective and stratiform precipitation in the rainy season(May–August) of 1998–2012 over East Asia. The results show that the storm tops for convective precipitation are higher than those for stratiform precipitation, because of the more unstable atmospheric motions for convective precipitation. Moreover, the storm tops are higher at 1200 UTC than at 0000 UTC over land regions for both convective and stratiform precipitation, and vice versa for ocean region. Additionally, temperature anomaly patterns inside convective and stratiform precipitating clouds show a negative anomaly of about 0–2 K, which results in cooling effects in the lower troposphere. This cooling is more obvious at 1200 UTC for stratiform precipitation. The positive anomaly that appears in the middle troposphere is more than 2 K, with the strongest warming at 300 hPa. Relative humidity anomaly patterns show a positive anomaly in the middle troposphere(700–500 h Pa) prior to the occurrence of the two types of precipitation, and the increase in moisture is evident for stratiform precipitation. | Rui WANG Yunfei FU | 2017 | Journal of Meteorological Research2017，31，5： | 6 |
| 11 | Impact of Cloud Microphysical Processes on the Simulation of Typhoon Rananim near Shore. Part I: Cloud Structure and Precipitation Features显示文摘By using the Advanced Regional Eta-coordinate Model (AREM), the basic structure and cloud features of Typhoon Rananim are simulated and verified against observations. Five sets of experiments are designed to investigate the effects of the cloud microphysical processes on the model cloud structure and precipitation features. The importance of the ice-phase microphysics, the cooling effect related to microphysical characteristics change, and the influence of terminal velocity of graupel are examined. The results indicate that the cloud microphysical processes impact more on the cloud development and precipitation features of the typhoon than on its intensity and track. Big differences in the distribution pattern and content of hydro-meteors, and types and amount of rainfall occur in the five experiments, resulting in different heating and cooling effects. The largest difference of 24-h rain rate reaches 52.5 mm h-1 . The results are summarized as follows: 1) when the cooling effect due to the evaporation of rain water is excluded, updrafts in the typhoon's inner core are the strongest with the maximum vertical velocity of -19 Pa s-1 and rain water and graupel grow most dominantly with their mixing ratios increased by 1.8 and 2.5 g kg-1, respectively, compared with the control experiment; 2) the melting of snow and graupel affects the growth of rain water mainly in the spiral rainbands, but much less significantly in the eyewall area; 3) the warm cloud microphysical process produces the smallest rainfall area and the largest percentage of convective precipitation (63.19%), while the largest rainfall area and the smallest percentage of convective precipitation (48.85%) are generated when the terminal velocity of graupel is weakened by half. | CHENG Rui YU Rucong FU Yunfei XU Youping | 2011 | Acta meteorologica Sinica2011，25，4： | 6 |
| 12 | Climatological Characteristics of Summer Precipitation over East Asia Measured by TRMM PR:A Review显示文摘Precipitation is an important indicator of climate change and a critical process in the hydrological cycle, on both the global and regional scales. Methods of precipitation observation and associated analyses are of strategic importance in global climate change research. As the first space-based radar, the Tropical Rainfall Measuring Mission(TRMM)Precipitation Radar(PR) has been in operation for almost 17 years and has acquired a huge amount of cloud and precipitation data that provide a distinctive view to help expose the nature of cloud and precipitation in the tropics and subtropics. In this paper we review recent advances in summer East Asian precipitation climatology studies based on long-term TRMM PR measurements in the following three aspects:(1) the three-dimensional structure of precipitation,(2) the diurnal variation of precipitation, and(3) the recent precipitation trend. Additionally, some important prospects regarding satellite remote sensing of precipitation and its application in the near future are discussed. | Yunfei FU Xiao PAN Yuanjian YANG Fengjiao CHEN Peng LIU | 2017 | Journal of Meteorological Research2017，31，1： | 6 |
| 13 | Ozone vertical variations during a typhoon derived from the OMI observations and reanalysis data显示文摘Typhoon is considered to play a key role in the dynamical exchange processes taking place between the troposphere and stratosphere.In this paper,the impact of typhoon on the ozone distribution in the upper troposphere and middle stratosphere is investigated using ozone profiles measured by Aura’s Ozone Monitoring Instrument and meteorological fields from reanalysis data.During the passage of Typhoon Hai-Tang in 2005 over the western North Pacific,low values of ozone column above 200 hPa and ozone mixing ratio between the upper troposphere and the middle stratosphere(from 200 to 50 hPa)are observed right above the typhoon’s track,a result due to the strong upward propagation of air associated with overshooting convection in typhoon.A comparative analysis of different stages of Hai-Tang suggests that in the region where typhoon has higher intensity the troposphere-to-stratosphere transport is enhanced.These results indicated that the typhoon has a significant impact on the ozone variation in the upper troposphere and the middle stratosphere. | FU YunFei XIAN Tao Lü DaRen LIU GuoSheng HENG ZhiWei SUN Liang LIU Qi WANG Yu YANG YuanJian | 2013 | Chinese Science Bulletin2013，58，32： | 5 |
| 14 | Emerging roles of transforming growth factor β signaling in wet age-related macular degeneration显示文摘Age-related macular degeneration (AMD) is one of the major causes of irreversible blindness among aging populations in developed countries and can be classified as dry or wet according to its progression.Wet AMD,which is characterized by angiogenesis on the choroidal membrane,is uncommonly seen but more severe.Controlling or completely inhibiting the factors that contribute to the progression of events that lead to angiogenesis may be an effective strategy for treating wet AMD.Emerging evidence has shown that transforming growth factor-β(TGF-β) signaling plays a significant role in the progression of wet AMD.In this review,we described the roles of and changes in TGF-β signaling in the development of AMD and discussed the mechanisms of the TGF-β superfamily in choroidal neovascularization (CNV) and wet AMD,including the modulation of angiogenesis-related factors,inflammation,vascular fibrosis,and immune responses,as well as cross-talk with other signaling pathways.These remarkable findings indicate that TGF-β signaling is a potential target for wet AMD treatment. | Kai Wang Haoran Li Ruipu Sun Chaxian Liu Yunfei Luo Shuhua Fu Ying Ying | 2019 | Acta Biochimica et Biophysica Sinica2019，51，1： | 5 |
| 15 | Contribution of tropical cyclone rainfall at categories to total precipitation over the Western North Pacific from 1998 to 2007显示文摘从中国气象学的管理( CMA )从热带降雨测量使命( TRMM )多卫星 降水分析( TMPA ) 3B42 和最好的轨道数据基于 10 年 降水数据,季节,热带气旋( TC )的每月、年度的贡献到全部的降雨的 降水从5月在 1998~2007 期间在西方的诺思太平洋( WNP )上被分析到12月。结果显示出那:(1 ) TC 季节的降雨贡献在内陆区域从 4%到上面 40% 在 15 的海洋区域 ???? 蹂 ? ? 吗?? | CHEN FengJiao FU YunFei | 2015 | Science China Earth Sciences2015，58，11： | 4 |
| 16 | Large eddy simulation of unsteady transitional flow on the low-pressure turbine blade显示文摘The aim of this paper is to predict the phenomenon of laminar separation,transition and reattachment in a low-pressure turbine(LPT).Self-developed large eddy simulation program of compressible N-S equations was used to describe the flow structures of T106A LPT blade profile at Reynolds number of 1.1X105 based on the exit isentropic velocity and chord length.The computational results show the distributions of time-averaged wall-static pressure coefficient and mean skin-friction coefficient on the blade surface.The locations of laminar separation and reattachment points occur around 87%and 98%axial chord,which agree well with experiment data.The two-dimensional shear layer is gradually unstable along the downstream half of the suction side as a result of the spanwise fluctuation and the roll up of shear layer via Kelvin-Helmholtz(KH)instability.Three-dimensional motions appear near 84%axial chord which later triggers spanwise vortexes and streamwise vortexes,leading to transition to turbulence in the separation bubble.Through introducing the concept of dissipation function,the high loss mainly comes from the places where strong shear layer and intense fluctuation exist.Furthermore,the separation region is only an accumulation center of the low-energy fluid rather than an area of loss source. | WANG YunFei CHEN Fu LIU HuaPing CHEN HuanLong | 2014 | Science China(Technological Sciences)2014，57，9： | 4 |
| 17 | Climatologic comparison of HadISST1 and TMI sea surface temperature datasets显示文摘Two monthly datasets of sea surface temperature (SST),TMI SST retrieved from satellite observations by Remote Sensing System and HadISST1 (Hadley Centre Sea-ice and Sea-surface Temperature Data Set Version 1) derived from in situ measurements by Hadley Centre,were compared on climatologic multiple time scales over tropical and subtropical areas from 1998 to 2006.Results indicate that there is a good consistency in the horizontal global distribution,with 1.0° resolution on multi-year and multi-season mean scales between the two datasets,and also in the time series of global mean SST anomalies.However,there are still some significant differences between the datasets.Generally,TMI SST is relatively higher than HadISST1.In addition,the differences between the two datasets show not only remarkable regionality,but also distinct seasonal variations.Moreover,the maximum departure occurs in summer,while theminimum takes place in autumn.For all seasons,over 30% of the regions in the Tropical and Subtropical areas have a difference of more than 0.3°C.EOF analysis of the SST anomaly field also shows that there are differences between the two datasets,where HadISST1 has more significant statistical characteristics than TMI SST.On the other hand,results show that the difference between the two datasets is related to the vertical structure of ocean temperatures,as well as other simultaneously retrieved parameters in TMI products,such as wind speed,water vapor,liquid cloud water and rain rates.In addition,large biases between HadISST1 and TMI SST are found in coastal regions,where TMI SST cannot be accurately retrieved because of polluted microwave signals. | WANG Yu LIU Peng LI TianYi FU YunFei | 2011 | Science China Earth Sciences2011，54，8： | 3 |
| 18 | Impact of Cloud Microphysical Processes on the Simulation of Typhoon Rananim near Shore. Part II: Typhoon Intensity and Track显示文摘The impact of cloud microphysical processes on the simulated intensity and track of Typhoon Rananim is discussed and analyzed in the second part of this study. The results indicate that when the cooling effect due to evaporation of rain water is excluded, the simulated 36-h maximum surface wind speed of Typhoon Rananim is about 7 m s-1 greater than that from all other experiments; however, the typhoon landfall location has the biggest bias of about 150 km against the control experiment. The simulated strong outer rainbands and the vertical shear of the environmental flow are unfavorable for the deepening and maintenance of the typhoon and result in its intensity loss near the landfall. It is the cloud microphysical processes that strengthen and create the outer spiral rainbands, which then increase the local convergence away from the typhoon center and prevent more moisture and energy transport to the inner core of the typhoon. The developed outer rainbands are supposed to bring dry and cold air mass from the middle troposphere to the planetary boundary layer (PBL). The other branch of the cold airflow comes from the evaporation of rain water itself in the PBL while the droplets are falling. Thus, the cut-off of the warm and moist air to the inner core and the invasion of cold and dry air to the eyewall region are expected to bring about the intensity reduction of the modeled typhoon. Therefore, the deepening and maintenance of Typhoon Rananim during its landing are better simulated through the reduction of these two kinds of model errors. | CHENG Rui YU Rucong XU Youping FU Yunfei | 2011 | Acta meteorologica Sinica2011，25，4： | 3 |
| 19 | Impacts of Topographic Complexity on Modeling Moisture Transport and Precipitation over the Tibetan Plateau in Summer显示文摘The non-hydrostatic global variable resolution model(MPAS-atmosphere)is used to conduct the simulations for the South Asian Summer monsoon season(June,July,and August)in 2015 with a refinement over the Tibetan Plateau(TP)at the convection-permitting scale(4 km).Two experiments with different topographical datasets,complex(4-km)and smooth(60-km)topography,are designed to investigate the impacts of topographical complexity on moisture transport and precipitation.Compared with the observations and reanalysis data,the simulation can successfully capture the general features of key meteorological fields over the TP despite slightly underestimating the inflow through the southern TP.The results indicate that the complex topography can decrease the inward and outward moisture transport,ultimately increasing the total net moisture transport into the TP by~11%.The impacts of complex topography on precipitation are negligible over the TP,but the spatial distributions of precipitation over the Himalayas are significantly modulated.With the inclusion of complex topography,the sharper southern slopes of the Himalayas shift the lifted airflow and hence precipitation northward compared to the smooth topography.In addition,more small-scale valleys are resolved by the inclusion of complex topography,which serve as channels for moisture transport across the Himalayas,further favoring a northward shift of precipitation.Overall,the difference between the two experiments with different topography datasets is mainly attributed to their differing representation of the degree of the southern slopes of the Himalayas and the extent to which the valleys are resolved. | Gudongze LI Haoming CHEN Mingyue XU Chun ZHAO Lei ZHONG Rui LI Yunfei FU Yanhong GAO | 2022 | Advances in Atmospheric Sciences2022，39，7： | 3 |
| 20 | Untangling the contributions of meteorological conditions and human mobility to tropospheric NO_(2) in Chinese mainland during the COVID-19 pandemic in early 2020显示文摘In early 2020,unprecedented lockdowns and travel bans were implemented in Chinese mainland to fight COVID-19;which led to a large reduction in anthropogenic emissions.This provided a unique opportunity to isolate the effects from emission and meteorology on tropospheric nitrogen dioxide(N0_(2)).Comparing the atmospheric N0_(2) in 2020 with that in 2017,we found the changes of emission have led to a 49.3±23.5%reduction,which was〜12%more than satellite-observed reduction of 37.8±16.3%.The discrepancy was mainly a result of changes of meteorology,which have contributed to an 8.1±14.2%increase of N02.We also revealed that the emission-induced reduction of N02 has significantly negative correlations to human mobility,particularly that inside the city.The intra-city migration index derived from Baidu Location-Based-Service can explain 40.4%it 17.7%variance of the emission-induced reduction of N0_(2) in 29 megacities,each of which has a population of over 8 million in Chinese mainland. | Yuxiang Zhang Haixu Bo Zhe Jiang Yu Wang Yunfei Fu Bingwei Cao Xuewen Wang Jiaqi Chen Rui Li | 2021 | National Science Review2021，8，11： | 2 |
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