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| 1 | An Effective Configuration of Ensemble Size and Horizontal Resolution for the NCEP GEFS显示文摘Two important questions are addressed in this paper using the Global Ensemble Forecast System(GEFS) from the National Centers for Environmental Prediction(NCEP):(1) How many ensemble members are needed to better represent forecast uncertainties with limited computational resources?(2) What is the relative impact on forecast skill of increasing model resolution and ensemble size? Two-month experiments at T126L28 resolution were used to test the impact of varying the ensemble size from 5 to 80 members at the 500hPa geopotential height.Results indicate that increasing the ensemble size leads to significant improvements in the performance for all forecast ranges when measured by probabilistic metrics,but these improvements are not significant beyond 20 members for long forecast ranges when measured by deterministic metrics.An ensemble of 20 to 30 members is the most effective configuration of ensemble sizes by quantifying the tradeoff between ensemble performance and the cost of computational resources.Two representative configurations of the GEFS-the T126L28 model with 70 members and the T190L28 model with 20 members,which have equivalent computing costs-were compared.Results confirm that,for the NCEP GEFS,increasing the model resolution is more(less) beneficial than increasing the ensemble size for a short(long) forecast range. | 麻巨慧 Yuejian ZHU Richard WOBUS Panxing WANG | 2012 | Advances in Atmospheric Sciences2012，29，4： | 5 |
| 2 | Comparison of the Hadley cells calculated from two reanalysis data sets显示文摘The mass stream function of mean me-ridional circulation is calculated from the ECMWF andNCEP/NCAR reanalysis data sets using a superposi-tion computation scheme. The comparison of resultsshows that the common ascending leg of the Hadleycell calculated from the ECMWF data is strong andnarrow, and averagely lies more north of the equatorin comparison with its counterpart from the NCEP/ NCAR data, and furthermore the Hadley cell from theECMWF data shows an obvious double-layer struc-ture. Therefore, there are obvious differences be-tween Hadley cells displayed by the two objectiveanalysis data sets. | QIN Yujing WANG Panxing GUAN Zhaoyong YUE Yang | 2006 | Chinese Science Bulletin2006，51，14： | 5 |
| 3 | Detecting the Relationship Between Summer Rainfall Anomalies in Eastern China and the SSTA in the Global Domain with a New Significance Test Method显示文摘It is suggested that the multiple samples in a correlation map or a set of correlation maps should be examined with significance tests as per the Bernoulli probability model. Therefore, both the contemporaneous and lag correlations of summertime precipitation R in any one of the three regions of Northern China (NC), the Changjiang-Huaihe River Valley (CHRV), and Southern China (SC) with the SSTA in the global domain have been tested in the present article, using our significance test method and the method proposed by Livezey and Chen (1983) respectively. Our results demonstrate that the contemporaneous correlations of summer R in CHRV with the SSTA are larger than those in NC. Significant correlations of SSTA with CHRV R are found to be in some warm SST regions in the tropics, whereas those of SSTA with NC R, which are opposite in sign as compared to the SSTA-CHRV R correlations, are found to be in some regions where the mean SSTs are low. In comparison with the patterns of the contemporaneous correlations, the 1 to 12 month lag correlations between NC R and SSTA, and those between CHRV summer R and SSTA show similar patterns, including the magnitudes and signs, and the spatial distributions of the coefficients. However, the summer rainfall in SC is not well correlated with the SSTA, no matter how long the lag interval is. The results derived from the observations have set up a relationship frame connecting the precipitation anomalies in NC, CHRV, and SC with the SSTA in the global domain, which is critically useful for our understanding and predicting the climate variabilities in different parts of China. Both NC and CHRV summer R are connected with El Nio events, showing a ‘––’pattern in an El Nio year and a ‘+ +’ pattern in the subsequent year. | LU Chuhan GUAN Zhaoyong WANG Panxing DUAN Mingken | 2009 | Journal of Ocean University of China2009，8，1： | 4 |
| 4 | Absence of a prominent TH2 cytokine response in human tuberculosis 显示文摘 | Lin Y Zhang M Hofman FM PanX | 1996 | Infect Immun1996，64，： | 1 |
| 5 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，4： | 1 |
| 6 | Elastomerswithchain-endmussel-mimeticmodificationfornanocomposites:strongmodificationstoreinforcementandviscoelasticproperties显示文摘 | PanX D QinZ YanY Y | 2010 | SadhukhanPPolymer2010，51，15： | 1 |
| 7 | The orphan response regulator covR: a globally negative modulator of virulence in Streptococcus suis serotype 2显示文摘 | PanX Ge J Li M | 2009 | J Bacteriol2009，，： | 1 |
| 8 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，4： | 1 |
| 9 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | | 0，，： | 1 |
| 10 | Advanced glycation end products depress functionof endothelial progenitor cells via p38 and ERK 1/2 mitogenactivatedprotein kinase pathways显示文摘 | Sun C Liang C Ren Y Zhen Y He Z Wang H Tan H PanX Wu Z | 2009 | Basic Res Cardiol2009，104，1： | 1 |
| 11 | A study of circulation difference between East-Asian and Indian summer monsoons with their interaction显示文摘 | He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，3： | 1 |
| 12 | Multi-scale variation characteristics of polar vortex at 10 hPa in the Southern Hemisphere显示文摘By use of 1948-2007 NCEP/NCAR reanalysis monthly geopotential data, a set of circulation indices are defined to characterize the polar vortex at 10 hPa in the Southern Hemisphere, including area-(S), intensity-(P) and centre position-(λc , φc) indices. Sea-sonal variation, interannual anomalies and their possible causes of 10 hPa polar vortex in the Southern Hemisphere are analyzed by using these indices, the relationship between 10 hPa polar vortex strength and the Antarctic Oscillation are analyzed as well. The results show that: (1) the polar region at 10 hPa in the Southern Hemisphere is controlled by anticyclone (cyclone) from Dec. to Jan. (from Mar. to Oct.), Feb. and Nov. are circulation transition seasons. (2) Intensity index (P) and area index (S) of anticy-clone (cyclone) in Jan. (Jul.) show a significant spike in the late 1970s, the anticyclone (cyclone) enhances (weakens) from ex-tremely weak (strong) oscillation to near the climatic mean before a spike, anticyclone tends to the mean state from very strong oscillation and cyclone oscillates in the weaker state after the spike. (3) There is significant interdecadal change for the anticyclone center in Jan., while markedly interannual variation for cyclone center in July. (4) The ozone anomalies can cause the interannual anomaly of the polar anticyclone at 10 hPa in the Southern Hemisphere in Jan. (positive correlation between them), but it is not related to the polar cyclone anomalies. (5) There is notable negative correlation between the polar vortex intensity index P and the Antarctic Oscillation index (AAOI), thus AAOI can be represented by P. | LiPing Li JuHui Ma PanXing Wang Dong Guo MingKen Duan ShuXuan Guan | 2010 | Research in Cold and Arid Regions2010，2，1： | 1 |
| 13 | A study of circulation differences between East Asian and Indian summer monsoon with their interaction显示文摘 | ZHU Qiangen HE Jinhai WANG Panxing | 1986 | Adv Atmos Sci1986，3，4： | 1 |
| 14 | A study of circulation differences between East-Asian and India summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Adv Atmos Sci1986，3，4： | 1 |
| 15 | In Vitro Inhibition of Monoamine Oxidase by Liquiritigenin and I so liquiritigenin I so later from Sinofranchetia Chinensis显示文摘 | KongLD ZhangY | 2000 | Acta Pharmacol Sin2000，21，10： | 1 |
| 16 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，4： | 1 |
| 17 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，4： | 1 |
| 18 | A study of circulation differences between East-Asian and Indian summer monsoons with their interaction显示文摘 | Zhu Qiangen He Jinhai Wang Panxing | 1986 | Advances in Atmospheric Sciences1986，，4： | 1 |
| 19 | Definition and analysis of the circulation indices of polar vortex at 10 hPa in the Northern Hemisphere显示文摘A set of circulation indices are defined and calculated to characterize monthly mean polar vortex at 10 hPa geopotential height chart in the Northern Hemisphere,including area-(S),intensity-(P) and center position (λc,φc)-indices by use of 1948-2007 NCEP/NCAR 10 hPa monthly height data.These indices series are used to investigate the seasonal variation and interannual anomaly of polar vortex,along with the relations with global warming,ozone anomaly and Arctic Oscillation (AO).The results show that (1) there is anticyclonic (cyclonic) from Jun.to Aug.(from Sep.to Mar.).The change of spring circulation pattern is slower than that of autumn.(2) S can be replaced by P due to the interannual synchronal variations of the intensity and area for polar vortex.The interannual (interdecadal) variations of P are significant in Jan.(Jul.).(3) The anomalies of system center position in Jan.are more evident than that in Jul.(4) The variations of mean temperature at mid-stratosphere in the vicinity of pole zone in Jan.are different from that in Jul.,but they are synchronal with the corresponding P and not significant correlation with the trend of global warming.However,the relationship between P and total O3 in Jul.are obvious.(5) There is so notable correlation between P and AO that P can represent AO. | LiPing Li ShuXuan Guan PanXing Wang JuHui Ma | 2009 | Research in Cold and Arid Regions2009，1，6： | 1 |
| 20 | Physicalactivityandca rdiovascularriskfactorsinruralshanghaichina显示文摘 | HongY BotsMl PanX etal | 1994 | IntJEpide milo1994，，23： | 1 |
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