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Local and non-local sources of airborne particulate pollution at beijing——The ratio of Mg/Al as an element tracer for estimating the contributions of mineral aerosols from outside beijing

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Science China Chemistry 2005年第3期48卷 253-264页

作者： HAN Lihui1, ZHUANG Guoshun1,2,3. SUN Yele1 & WANG Zifa3.1. The Center for atmospheric Environmental Study, Department of Chemistry, beijing Normal University, beijing 100875, China 2. Center for atmospheric Chemistry Study, Department of Environmental Science & Engineering, Fudan University, Shanghai 2004.0}, China {4., institute of atmospheric physics, cas, beijing 10002., China 1. The Center for atmospheric Environmental Study Department of Chemistry Beijing Normal University 100875 Beijing China 2. Center for atmospheric Chemistry Study Department of Environmental Science & Engineering Fudan University 200433 Shanghai China 3. institute of atmospheric physics CAS LAPC/NZC 100029 Beijing China

A new element tracer technique has firstly been established to estimate the contri-butions of mineral aerosols from both inside and outside beijing. The ratio of Mg/Al in aerosol is a feasible element tracer to distinguish between the sources of inside and outside beijing. Mineral aerosol, inorganic pollution aerosol mainly as sulfate and nitrate, and organic aerosol are the major components of airborne particulates in beijing, of which mineral aerosol accounted for 3.%―67% of total suspended particles （TSP）, 10%―70% of fine particles （PM2.5）, and as high as 74. and 90% of TSP and PM2.5, respectively, in dust storm. The sources from outside beijing contributed 62% （3.%―86%） of the total mineral aerosols in TSP, 69% （52%―90%） in PM10, and 76% （59%―93.） in PM2.5 in spring, and 69% （52%―83.）, 79% （52%―93.）, and 4.% （7%―79%） in TSP, PM10, and PM2.5, respectively, in winter, while only20% in summer and autumn. The sources from outside beijing contributed as high as 97% during dust storm and were the dominant source of airborne particulates in beijing. The contributions from outside Bei-jing in spring and winter are higher than those in summer, indicating clearly that it was related to the various meteorological factors.

关键词： mineral aerosol local sources non-local sources dust storm re-suspended dust element tracer technique.

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2002:The extra-strong warm winter event in North Asia and its accompanying anomalous atmospheric circulation

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Chinese Science Bulletin 2003年第10期48卷 1031-1033页

作者： WANG Huijun LASG, institute of atmospheric physics, Chinese Academy of Sciences, beijing 10002., China LASG Institute of Atmospheric Physics Chinese Academy of Science China

Features of an extra-strong warm winter event in North Asia in 2002 and its accompanying anomalous atmospheric circulation were studied through diagnosis on the atmospheric reanalysis data set. Results show that the winter of 2002 is of the warmest in the recent 54.years in North Asia, which was caused by both decadal scale and interannual scale variability. The interannual variability is proved to be as the main cause for the event, and it is related to the global scale atmospheric circulation anomalies, with the strongest of them in the Eastern Hemisphere and in the middle and high latitude region of the Southern Hemisphere.

关键词：大气环流亚洲北部高强度暖冬现象天气资料

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Speciation of the elements and compositions on the surfaces of dust storm particles:The evidence for the coupling of iron with sulfur in aerosol during the long-range transport

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Chinese Science Bulletin 2005年第8期50卷 738-744页

作者： ZHANG Xingying1,2, ZHUANG Guoshun1,2,3. CHEN Jianmin2 & XUE Huaxin2 1. Center for atmospheric Environment Study, Department of Chemistry, beijing Normal University, beijing 100875, China 2. Center for atmospheric Chemistry Study, Department of Environ- mental Science and Engineering, Fudan University, Shanghai 2004.0}, China {4., institute of atmospheric physics, nzc/lapc, Chinese Academy of Sciences, beijing 10002., China Center for atmospheric Environment Study Department of Chemistry Beijing Normal University Beijing 100875 China Center for atmospheric Chemistry Study Department of Environmental Science and Engineering Fudan University Shanghai 200433 China lapc/nzc Institute of Atmospheric Physics NZC/LAPC Chinese Academy of Sciences Beijing 100029 China

The speciation of the elements on the surface of the particles collected during dust storm and non-dust storm in beijing and Inner Mongolia was studied by XPS. The ma- jor species of iron on the surface were oxides, sulfate, silicate, FeOOH and minor part sorbed on SiO2/Al2O3. Sulfate is the dominant species of sulfur on the surface. SiO2 and Al2O3.are the main components of Si and Al on the surface respectively. One of the most important findings was that the Fe(II) (FeS and FeSO4. produced could account for up to 4..3. and 4..6% of the total Fe on the surface in the aerosol sample collected at that night and next day of the “peak” time of the dust storm occurring on March 20, 2002, while Fe2(SO4.3. one of the Fe(III) species on the surface decreased from 67.1% to 4..5% and 4..0% respectively. Both S and Fe en- riched on the surface of aerosol particles. Fe(II) accounted for 1.3.?5.3. of total Fe in bulk aerosol samples during dust storm. These results provided strong evidence to sup- port the hypothesis of the coupling between iron and sulfur in aerosols during the long-range transport, which would have important impact on the global biogeochemical cycle.

关键词：物种形成原理 XPS 大气悬浮物 Fe-S结合粒子集合

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2003.vs 2002: A large amplitude wintertime temperature anomaly reversion event and its anomalous atmospheric circulation

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Chinese Science Bulletin 2003年第S2期48卷 1-4页

作者： WANG Huijun nzc/LASG, institute of Atmlspheric physics, Chinese Academy of Sciences,{3.. China Chinese Acad Sci Inst Atmospher Phys NZC LASG Beijing 100029 Peoples R China

It is revealed that there happened a large am-plitude wintertime temperature anomaly reversion event(LTAR) in Northern Hemisphere high latitude regions andSouth Australia for the year 2003.versus 2002, with the mostnotable change in Eurasia, eastern North America, NorthPacific, and South Australia. The accompanying atmosphericgeneral circulation anomalies are analyzed and the dominantchanges in the circulation arc found out. The anomalouscyclonic eddies over the north Pacific and the anomalousanticyclonic eddies over North Europe that cooperate eachother are mostly linked with the event. Both anomalous eddysystems are connected with the remote teleconnection pat-terns respectively. The research also suggests the existence ofa cross-equator teleconnection pattern, namely, the NorthernPacific-Western Pacific-Australia teleconnection pattern(NPWPA). It is not only related to LTAR, but also associatedwith the temperature transition from cold episode to warmepisode in the year 2003.versus 2002 during Decem-ber-January-February.

关键词： wintertime temperature anomaly reversion event atmospheric general circulation. NPWPA.

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Computational stability of the forced dissipative nonlinear atmospheric equations

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Chinese Science Bulletin 1999年第10期44卷 949-952页

作者： LI Jianping and CHOU Jifan LASG , institute of atmospheric physics , Chinese Academy of Sciences , beijing 100080, China Department of atmospheric Sciences , Lanzhou University , Lanzhou 73.000, China beijing Meteorological College, beijing 100081, China LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Department of atmospheric Sciences Lanzhou University Lanzhou China beijing Meteorological College Beijing China

A new concept of computational quasi-stability (CQS) is introduced to study the computational stability (CS) of the forced dissipative nonlinear (FDN) evolution equations. Based on the concept, the CQS criterion of difference scheme of FDN atmospheric equations is obtained. So it provides the theoretical basis for designing the computational stable difference scheme of FDN atmospheric equations.

关键词： computational stability (CS) computational quasi-stability (CQS) operator equation difference scheme forced dissipative nonlinear (FDN) equations.

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Improved ENSO simulation in regional coupled GCM using regressive correction method

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Science China Earth Sciences 2007年第8期50卷 1258-1265页

作者： FU WeiWei1 & ZHOU GuangQing2 1 Nansen-Zhu International Research Center (nzc), institute of atmospheric physics, Chinese Academy of Sciences (cas),{3., China 2 State Key Laboratory of Numerical Modeling for {4. Sciences and Geophysical Fluid Dynamics (LASG), institute of At-mospheric {4., cas,{3., China 1. Nansen-Zhu International Research Center (nzc) Institute of Atmospheric Physics Chinese Academy of Sciences (CAS) Beijing 100029 China 2. State Key Laboratory of Numerical Modeling for atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics CAS Beijing 100029 China

A regressive correction method is presented with the primary goal of improving ENSO simulation in regional coupled GCM. It focuses on the correction of ocean-atmosphere exchanged fluxes. On the basis of numerical experiments and analysis, the method can be described as follows: first, driving the ocean model with heat and momentum flux computed from a long-term observation data set; the pro-duced SST is then applied to force the AGCM as its boundary condition; after that the AGCM’s simula-tion and the corresponding observation can be correlated by a linear regressive formula. Thus the re-gressive correction coefficients for the simulation with spatial and temporal variation could be obtained by linear fitting. Finally the coefficients are applied to redressing the variables used for the calculation of the exchanged air-sea flux in the coupled model when it starts integration. This method together with the anomaly coupling method is tested in a regional coupled model, which is composed of a global grid-point atmospheric general circulation model and a high-resolution tropical Pacific Ocean model. The comparison of the results shows that it is superior to the anomaly coupling both in reducing the coupled model ‘climate drift’ and in improving the ENSO simulation in the tropical Pacific Ocean.

关键词： anomaly coupling regressive correction method regional coupled model ENSO simulation

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Three-dimensional decomposition method of global atmospheric circulation

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Science China Earth Sciences 2008年第3期51卷 386-402页

作者： LIU HaiTao1,2,3. HU ShuJuan4. XU Ming5 & CHOU JiFan6,7 1 State Key Laboratory of Numerical Modeling for atmospheric Sciences and Geophysical Fluid Dynamics, institute of atmospheric physics, Chinese Academy of Sciences, beijing 10002., China 2 Graduate University of Chinese Academy of Sciences, {3. 10004., China 3.{3. Climate Center, {3. 100089, China 4.Department of Mathematics, Lanzhou University, Lanzhou 73.000, China 5 Shanghai Typhoon institute, Shanghai 20003., China 6 Department of atmospheric Sciences, Lanzhou University, Lanzhou 73.000, China 7 China Meteorological Administration Training Center, {3. 100089, China 1. State Key Laboratory of Numerical Modeling for atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China 2. Graduate University of Chinese Academy of Sciences Beijing 100049 China 3. beijing Climate Center Beijing 100089 China 4. Department of Mathematics Lanzhou University Lanzhou 730000 China 5. Shanghai Typhoon institute Shanghai 200030 China 6. Department of atmospheric Sciences Lanzhou University Lanzhou 730000 China 7. China Meteorological Administration Training Center Beijing 100089 China

By adopting the idea of three-dimensional Walker, Hadley and Rossby stream functions, the global atmospheric circulation can be considered as the sum of three stream functions from a global perspective. Therefore, a m... 详细信息

关键词： three-dimensional decomposition of the global atmospheric circulation generalized Walker Hadley and Rossby stream functions existence and uniqueness vertical motion

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Application of the moist vorticity vector in the analysis of a heavy rainfall event in North China

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Progress in Natural Science:Materials International 2007年第12期17卷 1457-1465页

作者： Zhao Yu1,2,3. Wang Jianguo4.and Xue Deqiang2(1. Laboratory of Cloud-Precipitation physics and Severe Storms, institute of atmospheric physics, Chinese Academy of Sciences, beijing 10002., China 2. Shandong Provincial Meteorological Observatory, Jinan 25003., China 3. Graduate University of Chinese Academy of Sciences, {3. 10003., China 4. Shandong Provincial Meteorological Bureau, Jinan 25003., China) Laboratory of Cloud-Precipitation physics and Severe Storms Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Shandong Provincial Meteorological Observatory Jinan 250031 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Shandong Provincial Meteorological Bureau Jinan 250031 China

The moist vorticity vector (MVV), defined as (ζa×▽qv)/ρ introduced by Gao et al. is used to study a heavy rainfall event in North China. The MVV has zonal, meridional and vertical components in a three-dimensional framework. Analysis of domain-mean and mass-integrated quantities shows that the variation of the vertical component of the MVV closely follows the variation of the cloud hydrometeors, with a linear correlation coefficient of 0.95, indicating that the vertical component of the MVV is strongly associated with midlatitude convection. Further analysis shows that the vertical component of the MVV reflects the interaction between the horizontal vorticity and the horizontal specific humidity gradient, which can associate dynamic and thermodynamic processes with cloud microphysical processes. Thus, this study can help to understand how the interaction between circulations and clouds aids the development of convection, and the MVV can be used to trace the development and evolution of heavy rainfall.

关键词： moist vorticity vector heavy rainfall modeling study.

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Response synchronization: New progress in brain-visual information processing

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Chinese Science Bulletin 1999年第16期44卷 1447-1458页

作者： ZHAO Songnian, XIONG Xiaoyun, YAO Guozheng and GUO Aike1. State Key Laboratory of atmospheric Boundary Layer physics and atmospheric Chemistry ,{3. , Chinese Academy of Sciences ,{4., China 2. Commission of the National Natural Science Foundation of China , beijing 100083. China 3. The Center of Information Science , Peking University, beijing 100871, China 4. Open Laboratory of Visual Information Processing , institute of Biophysics , Chinese Academy of Sciences , beijing 100101, China State Key Laboratory of atmospheric Boundary Layer physics and atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Commission of the National Natural Science Foundation of China Beijing China The Center of Information Science Peking University Beijing China Open Laboratory of Visual Information Processing Institute of Biophysics Chinese Academy of Sciences Beijing China

Studies on brain-vision have entered a new stage, after the stimulus-induced y synchronized oscillation of neuron group activities have been discovered in cat primary visual cortex. Naturally, how to understand the visual system became a very important methodological problem. From aspects such as information processing, nonlinear dynamics and neuronal network, some primary problems in vision studies have been deeply discussed, which are

关键词： neuron group (neural population) synchro-oscillation computational theory of vision response synchroniza-tion.

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The statistical characteristics of the atmospheric water over tropical western Pacific ' warm pool' during TOGA COARE IOP

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Chinese Science Bulletin 1997年第12期42卷 1005-1009页

作者： WEI Chong and XUAN Yuejianinstitute of atmospheric physics, Chinese Academy of Sciences,{3., China institute of atmospheric physics Chinese Academy of Sciences Fkijing China

THIS note gives the statistical analyses of continuous measurements with high time resolution(5 min)of atmospheric water(including precipitable water vapor,vertically path-integratedcloud liquid water content and rain intensity)over the tropical western Pacific at a fixed point(2°S,158°E)during TOGA COARE IOP(1992-11—1993.02).Some comparisons are madebetween these statistical results and those of the measurments obtained during previous meteo-

关键词： microwave remote sensing western Pacific ’ warm pool’ cloud liquid water water vapor tropical precipitation.

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