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Atmospheric and Oceanic Science Letters 2015年第2期8卷 63-66页

作者： WU Ling-Yun ZHANG Jing-Yong shi chun-xiang State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences National Meteorological Information Center China Meteorological Administration

Many Chinese people leave big cities for family reunions during the Chinese New Year （CNY）, which is the most important public holiday in China. However, how modem mass human migration during the CNY holiday affects the urban heat island （UHI） is still un- known. Here, the authors investigate the role of modem human migration for the UHI effects during the CNY holiday for the period of 1992-2006 in Harbin City, Northeast China. The results show that during the CNY week, the UHI effects expressed as daily mean, maxi- mum, and minimum temperature differences between urban and rural stations averaged over the period of 1992-2006 are 0.65℃ （43%）, 0.31℃ （48%）, and 1.14℃ （71%） lower than during the background period （four weeks before and four weeks after the CNY week）, re- spectively. Our findings identify previously unknown impacts of modem mass human migration on the UHI effects based on a case study in Harbin City.

关键词： urban heat island Chinese New Year holiday mass human migration surface air temperature Harbin City

Improving the simulation of terrestrial water storage anomalies over China using a Bayesian model averaging ensemble approach

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Atmospheric and Oceanic Science Letters 2018年第4期11卷 322-329页

作者： LIU Jian-Guo JIA Bing-Hao XIE Zheng-Hui shi chun-xiang School of Mathematics and Computational Science and Key Laboratory of Intelligent Control Technology for Wuling-Mountain Ecological Agriculture in Hunan Province Huaihua University State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences National Meteorological Information Center China Meteorological Administration

The ability to estimate terrestrial water storage(TWS)is essential for monitoring hydrological extremes(e.g.,droughts and floods)and predicting future changes in the hydrological ***,inadequacies in model physics and parameters,as well as uncertainties in meteorological forcing data,commonly limit the ability of land surface models(LSMs)to accurately simulate *** this study,the authors show how simulations of TWS anomalies(TWSAs)from multiple meteorological forcings and multiple LSMs can be combined in a Bayesian model averaging(BMA)ensemble approach to improve monitoring and *** using three forcing datasets and two LSMs were conducted over China's Mainland for the period 1979–*** the simulations showed good temporal correlations with satellite observations from the Gravity Recovery and Climate Experiment during 2004–*** correlation coefficient ranged between 0.5 and 0.8 in the humid regions(e.g.,the Yangtze river basin,Huaihe basin,and Zhujiang basin),but was much lower in the arid regions(e.g.,the Heihe basin and Tarim river basin).The BMA ensemble approach performed better than all individual member *** captured the spatial distribution and temporal variations of TWSAs over China's Mainland and the eight major river basins very well;plus,it showed the highest R value(>0.5)over most basins and the lowest root-mean-square error value(<40 mm)in all basins of *** good performance of the BMA ensemble approach shows that it is a promising way to reproduce long-term,high-resolution spatial and temporal TWSA data.

关键词： Terrestrial water storage anomalies multi-forcing and multi-model ensemble simulation Bayesian model averaging spatiotemporal variation uncertainty

Evaluation of Total Precipitable Water over East Asia from FY-3A/VIRR Infrared Radiances

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Atmospheric and Oceanic Science Letters 2010年第2期3卷 93-99页

作者： ZHENG Jing shi chun-xiang LU Qi-Feng XIE Zheng-Hui Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China National Satellite Meteorological Center China Meteorological Administration Beoing 100081 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites China Meteorological Administration Beijing 100081 China

Satellite retrieval of atmospheric water vapor is intended to further understand the role played by the energy and water cycle to determine the Earth's weather and *** algorithm for operational retrieval of total precipitable water (TPW) from the visible and infrared radiometer (VIRR) onboard Fengyun 3A (FY-3A) employs a split window technique for clear sky radiances over land and oceans during both day and *** retrieved TPW is compared with that from the moderate resolution imaging spectroradiometer (MODIS) onboard the Terra satellite and data from radiosonde observations (RAOB).During the study period,comparisons show that the FY-3A TPW is in general agreement with the gradients and distributions from the Terra *** zonal mean difference over East Asia is smaller in the daytime than at night,and the main difference occurs in the complex terrain at mid latitude near 30°*** with RAOB,the zonal FY-3A and the Terra TPW have a moist bias at low latitudes and a dry bias at mid and high latitudes;in addition,the FY-3A TPW performs slightly better in zonal mean biases and the diurnal *** temporal variation of the FY-3A and the Terra TPW generally fits the RAOB TPW with the FY-3A more accurate at night while Terra TPW more accurate during the *** of correlations,root mean square differences and standard deviations indicate that the FY-3A TPW series is more consistent with the RAOB TPW at selected *** a result,the FY-3A TPW has some advantages over East Asia in both spatial and temporal dimensions.

关键词： nFY-3A/VIRR total precipitable water split window technique evaluatio.

Study on the Structure of a Horizontal Shear Line over the Tibetan Plateau Based on CRA-Interim Datasets and Its Comparison with ERA-Interim Datasets

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Journal of Tropical Meteorology 2020年第4期26卷 483-494页

作者： YAO Xiu-ping ZHANG Shuo BAO Xiao-hong shi chun-xiang LIU Jing-wei China Meteorological Administration Training Centre Beijing 100081 China Beijing Institute of Applied Meteorology Beijing 100029 China Chinese Academy of Meteorological Sciences Beijing 100081 China National Meteorological Centre Beijing 100081 China

The CRA-Interim trial production of the global atmospheric reanalysis for 10 years from 2007 to 2016 was carried out by the China Meteorological Administration in 2017. The structural characteristics of the horizontal shear line over the Tibetan Plateau (TPHSL) based on the CRA-Interim datasets are examined by objectively identifying the shear line, and are compared with the analysis results of the European Centre for Medium-Range Weather Forecasts reanalysis data (ERA-Interim). The case occurred at 18UTC on July 5, 2016. The results show that both of the ERA-Interim and CRA-Interim datasets can well reveal the circulation background and the dynamic and thermal structure characteristics of TPHSL, and they have shown some similar features. The middle and high latitudes at 500 hPa are characterized by the circulation situation of"two troughs and two ridges", and at 200 hPa, the TPHSL is located in the northeast quadrant of the South Asian High Pressure (SAHP). The TPHSL locates in the positive vorticity zone and passes through the positive vorticity center corresponding to the ascending motion. Near the TPHSL, the contours of pseudo-equivalent potential temperature (θse) tend to be intensive, with a high-value center on the south side of the TPHSL. The TPHSL can extend to460 hPa and vertically inclines northward. There is a positive vorticity zone near the TPHSL which is also characterized by the northward inclination with the height, the ascending motion near the TPHSL can extend to 300 hPa, and the atmospheric layer above the TPHSL is stable. However, the intensities of the TPHSL’s structure characteristics analyzed with the two datasets are different, revealing the relatively strong intensity of geopotential height field, vertical velocity field, vorticity field and divergence field from the CRA-Interim datasets. In addition, the vertical profiles of the dynamic and water vapor thermal physical quantities of the two datasets are also consistent in the east and west

关键词： CRA-Interim datasets ERA-Interim datasets horizontal shear line over the Tibetan Plateau structure

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卫星多通道红外信息反演大气可降水业务方法

红外与毫米波学报 2005年第4期24卷 304-308页

作者：师春香谢正辉中国科学院大气物理研究所中国气象局国家卫星气象中心北京100081 中国科学院研究生院北京100039

利用GMS-5多通道资料和MODTRAN辐射传输模式设计并实现了用卫星红外分裂窗通道反演大气可降水的物理反演算法.采用1998年夏季的资料进行了大气可降水反演试验,并使用探空资料对反演结果进行检验,其均方根误差为3.30mm.为了在业务上实现... 详细信息

利用GMS-5多通道资料和MODTRAN辐射传输模式设计并实现了用卫星红外分裂窗通道反演大气可降水的物理反演算法.采用1998年夏季的资料进行了大气可降水反演试验,并使用探空资料对反演结果进行检验,其均方根误差为3.30mm.为了在业务上实现大气可降水物理反演算法,设计了通过利用GMS-5资料、数值预报资料以及RTTOV7快速辐射传输模式的反演大气可降水的物理算法,并用探空资料对反演结果进行检验,其均方根误差为4.09mm.结果表明:RTTOV7快速辐射传输模式的引入,使反演速度有显著的提高,能够满足业务要求.

关键词：大气可降水卫星红外数据 MODTRAN RTTO7 辐射传输模式

基于Hilbert边际谱与随机-模糊统计原理的梁桥损伤识别试验研究

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振动与冲击 2011年第8期30卷 123-127,148页

作者：石春香李胡生上海应用技术学院城市建设与安全工程学院上海200235

HHT是一种新的适用于非线性、非平稳信号且具有自适应性的数据处理方法,而桥梁试验模型空间变异的模糊性和测量过程中荷载激励的随机性,使得Hilbert边际谱能量比同时具有随机不确定性和模糊不确定性,适用于被随机-模糊统计原理处理,提... 详细信息

HHT是一种新的适用于非线性、非平稳信号且具有自适应性的数据处理方法,而桥梁试验模型空间变异的模糊性和测量过程中荷载激励的随机性,使得Hilbert边际谱能量比同时具有随机不确定性和模糊不确定性,适用于被随机-模糊统计原理处理,提出了基于Hilbert边际谱与随机-模糊统计原理的结构损伤识别方法,并将四个Hilbert边际谱能量指标应用到室内两跨连续梁模型桥的损伤识别中。结果表明:主梁损伤前后四种能量指标都发生了变化,但是能量累积变异指标和能量变异最值指标能准确指示出损伤位置和程度,比能量比偏差和能量比方差对于结构损伤更加敏感,更适用于桥梁实时在线的预测预警系统。

关键词：桥梁工程损伤识别试验研究 Hilbert边际谱随机-模糊均值

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老年急性脊椎骨折预后影响因素分析

中国急救医学 2013年第7期33卷 637-640页

作者：施向春贵州省黔南州人民医院骨二科贵州都匀558000

目的分析老年急性脊椎骨折的类型、节段、变形程度等因素与预后的相关性.方法以临床上147例老年急性脊椎骨折患者作为研究样本,对每一个样本分别在3周、3个月、6个月、12个月后以问卷调查方式收集关于疼痛程度、残疾程度、日常生活行... 详细信息

目的分析老年急性脊椎骨折的类型、节段、变形程度等因素与预后的相关性.方法以临床上147例老年急性脊椎骨折患者作为研究样本,对每一个样本分别在3周、3个月、6个月、12个月后以问卷调查方式收集关于疼痛程度、残疾程度、日常生活行为和生活质量的数据,对其进行评分,观察患者的预后.结果 69%发生楔形性骨折,19%发生凹面性骨折,12%发生粉碎性骨折.胸椎和腰椎的骨折比例比较差异无统计学意义（P〉0.05）.20.6%为轻度椎骨变形,46.7%为中度椎骨变形,32.7%为重度椎骨变形,差异有统计学意义（P=0.004）.骨折变形程度与性别、年龄、骨折定位之间无关联,粉碎性骨折与重度骨折变形之间联系更为密切（P〈0.001）.粉碎性骨折和重度变形患者的EQ-5D评分较低.胸椎骨折与脊椎后凸的的改变相关.结论有重度变形和粉碎性骨折的老年急性患者预后较差.而骨折节段分布、骨折类型等因素对预后影响较小.

关键词：脊椎骨折预后因素骨折节段骨折变形骨折类型

不同植入体置入内固定在胸腰椎结核治疗中的应用

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中国组织工程研究与临床康复 2010年第35期14卷 6591-6595页

作者：施向春贵州省黔南州人民医院骨二科贵州省都匀市558000

目的:探讨一期病灶清除后前路或后路应用不同植入体内固定治疗胸腰椎结核的临床效果。方法:以"胸腰椎结核,内固定,钛网,自体骨,骨水泥,前后路"为中文关键词;以":thoracolumbarspinaltuberculosis;internalfixation;titaniummesh;autogen... 详细信息

目的:探讨一期病灶清除后前路或后路应用不同植入体内固定治疗胸腰椎结核的临床效果。方法:以"胸腰椎结核,内固定,钛网,自体骨,骨水泥,前后路"为中文关键词;以":thoracolumbarspinaltuberculosis;internalfixation;titaniummesh;autogenousbone;cement;anteriorandposterior"为英文关键词,采用计算机检索2007-01/2010-05相关文章。纳入与一期病灶清除前路或后路内固定治疗胸腰椎结核的相关文章;排除重复研究或Meta分析类文章。以30篇文献为主重点探讨了不同植入体内固定治疗胸腰椎结核的临床效果。结果:目前内固定材料均以钛合金为主,再加前或后路的植骨融合,是治疗胸腰椎结核的主要方法,其优点在于钛合金具有良好的组织相容性和耐腐蚀性,不易发生异物反应。而结核菌在金属表面形成的多糖膜相对薄弱,抗结核药物和患者自身免疫机理仍能够发挥作用,病灶处植入固定物引起感染扩散的可能性较小。但无论是哪种植入体都存在内固定材料长期摩擦刺激血管和内固定物松动、脱落等并发症。结论:随着内固定材料和内固定技术的发展,大量的临床应用已经证明脊柱结核患者使用内固定的安全性和有效性,而一期重建脊柱的稳定性是提高脊柱结核手术效果的重要因素之一。低磨损、高相容性的内固定植入体是提高治疗质量的重要因素,从而能够更好地延长假体使用寿命。

关键词：胸腰椎结核内固定钛网自体骨骨水泥前后路

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环形非稳腔倒向波抑制镜抑制效果的数值模拟

中国激光 2007年第3期34卷 370-373页

作者：黄剑峰施翔春中国科学院上海光学精密机械研究所上海201800

对环形非稳腔激光器做数值计算模拟,给带有倒向波抑制(RWS)镜的环形非稳腔激光器的设计提供了数值参考。通过自洽方程,用Matlab计算带有倒向波抑制镜的环形非稳腔正、倒向波的稳定过程。改变腔长、放大率等参数来计算,发现使用倒向波抑... 详细信息

对环形非稳腔激光器做数值计算模拟,给带有倒向波抑制(RWS)镜的环形非稳腔激光器的设计提供了数值参考。通过自洽方程,用Matlab计算带有倒向波抑制镜的环形非稳腔正、倒向波的稳定过程。改变腔长、放大率等参数来计算,发现使用倒向波抑制镜能明显提高正向波的输出,并能抑制倒向波。气体分子的多普勒频移导致正、倒向波的频率变化。频率分开的越小,竞争越大,抑制效果越好,正向波输出功率则有所下降。对于特定的结构,存在最佳的放大率,使正向波的输出最大。计算结果表明,倒向波抑制镜的引入能增大环形非稳腔输出功率。计算结果对实际环形非稳腔的设计十分有用。

关键词：激光器环形非稳腔倒向波抑制数值计算抑制比

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采煤机铰接轴新型润滑结构设计

煤矿机械 2013年第8期34卷 197-198页

作者：史春祥天地科技股份有限公司上海分公司上海200030

通过对采煤机摇臂与牵引箱铰接结构、铰接轴的受力与润滑分析、研究,充分利用采煤机结构特点,改变传统的润滑方式,提出新型的铰接轴润滑方法,提高了采煤机可靠性和可维护性,在实际应用中获得用户认可。

关键词：采煤机铰接轴润滑可靠性