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大班音乐欣赏 大中国
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作者 石慧 《教育导刊(下半月)》 2004年第12X期36-36,共1页
关键词 《大中国》 活动目标 活动设计 幼儿园 幼儿教育 音乐欣赏活动
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曾德昭《大中国志》中的汉字字体名称研究 被引量:1
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作者 刘亚辉 《洛阳师范学院学报》 2017年第4期31-35,共5页
汉学名著《大中国志》介绍了汉字的四种字体,因只标了注音,未写汉字,引发后人诸多猜测,特别是第二和第三种字体,争议颇大。何高济认为第二种字体为行书,孟德卫、计翔翔、陈辉、董海樱等学者认为第二种为楷书,第三种为隶书。但大量资料... 汉学名著《大中国志》介绍了汉字的四种字体,因只标了注音,未写汉字,引发后人诸多猜测,特别是第二和第三种字体,争议颇大。何高济认为第二种字体为行书,孟德卫、计翔翔、陈辉、董海樱等学者认为第二种为楷书,第三种为隶书。但大量资料证明第三种不应为隶书,而是行书。《大中国志》介绍的汉字四种字体应分别为篆书、楷书、行书、草书。 展开更多
关键词 曾德昭 《大中国志》 字体 隶书 行书
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Study on the Genus Meristata Strand (Coleoptera: Chrysomelidae:Galerucinae) of China 被引量:3
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作者 张丽杰 杨星科 《Entomotaxonomia》 CSCD 北大核心 2002年第4期245-253,共9页
Nine species of Meristata occurred in China are reviewed. They are: Meristata dohrni (Baly, 1861); Meristata elongata (Jacoby, 1898); Meristata fallax (Harold, 1880); Meristata fraternalis fraternalis (Baly, 1879); Me... Nine species of Meristata occurred in China are reviewed. They are: Meristata dohrni (Baly, 1861); Meristata elongata (Jacoby, 1898); Meristata fallax (Harold, 1880); Meristata fraternalis fraternalis (Baly, 1879); Meristata fraternalis yunnanensis (Laboissiere, 1922); Meristata pulunini (Bryant, 1952); Meristata quadrifasciata (Hope, 1831); Meristata sexmaculata (Kollar et Redtenbacher, 1848); Meristata spilota (Hope, 1831). 展开更多
关键词 COLEOPTERA CHRYSOMELIDAE GALERUCINAE Meristata China
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The Genus Rhithrogena Eaton (Ephemeroptera: Heptageniidae) from Chinese Mainland, with Description of a New Species 被引量:1
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作者 周长发 郑乐怡 《Entomotaxonomia》 CSCD 北大核心 2004年第2期81-85,共5页
In present paper the genus Rhithrogena Eaton from Chinese mainland, including a new species to science (Rhithrogena lutea, sp. nov.), 2 new record species from China (R. bajkovae Sowa, R. lepnevae Brodsky) and 3 known... In present paper the genus Rhithrogena Eaton from Chinese mainland, including a new species to science (Rhithrogena lutea, sp. nov.), 2 new record species from China (R. bajkovae Sowa, R. lepnevae Brodsky) and 3 known species [R. wuyinensis (Gui et al.) (comb. nov.), R. trispina Zhou et Zheng, R. orientalis You (= R. sangangensis You, new synonym)] are revised besed on the imaginal specimens. A key to 7 species imagos is provided. All materials in this study are deposited in Nanjing Normal University. 展开更多
关键词 EPHEMEROPTERA HEPTAGENIIDAE Rhithrogena Chinese mainland +
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A new species in the genus Macromotettixoides Zheng(Orthoptera:Tetrigoidea:Metrodoridae) from Sichuan,China 被引量:1
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作者 邓维安 郑哲民 杨瑞刚 《Entomotaxonomia》 CSCD 北大核心 2012年第2期120-122,共3页
A new species of the genus Macromotettixoides Zheng, Macromotettixoides undulatifemura sp. nov. is described from the Emeishan Area of Sichuan, China. Type specimens are deposited at the Institute of Zoology, Shaanxi ... A new species of the genus Macromotettixoides Zheng, Macromotettixoides undulatifemura sp. nov. is described from the Emeishan Area of Sichuan, China. Type specimens are deposited at the Institute of Zoology, Shaanxi Normal University, Xi'an, China. 展开更多
关键词 ORTHOPTERA METRODORIDAE Macromotettixoides new species China
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A Preliminary Study on the Genus Caenis (Ephemeroptera: Caenidae) from Chinese Mainland, with Description of a New Species
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作者 周长发 郑乐怡 《Entomotaxonomia》 CSCD 北大核心 2004年第1期1-7,共7页
Five species of the genus Caenis from Chinese mainland are reviewed. Among them, C. parviforcipis (Zhou et al.) (nov. comb.) is transferred from the genus Brachycercus The larvae of the C. sinensis Gui et al. are desc... Five species of the genus Caenis from Chinese mainland are reviewed. Among them, C. parviforcipis (Zhou et al.) (nov. comb.) is transferred from the genus Brachycercus The larvae of the C. sinensis Gui et al. are described for the first time. The previously reported C. nigroforceps Zhou et al. is recognized as a new synonym of the Caenis rivulorum Eaton, and the report of C. nigropunctata Klapálek from China is confirmed. Both imagos and larvae of a new species C. melanoleuca, sp. nov. are described and illustrated in detail. 展开更多
关键词 EPHEMEROPTERA Caenidae Caenis REVISION Chinese mainland
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Comparison and Analysis on Animal and Plant Quarantine of Entry Mails among China, Australia and New Zealand
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作者 吴晶 李井干 殷连平 《Agricultural Science & Technology》 CAS 2016年第9期2099-2102,共4页
With the significant increase of the number of entry mails in China, mail inspection has become more and more challenge. Australia and New Zealand are the two countries recognized as the ones with the most stringent i... With the significant increase of the number of entry mails in China, mail inspection has become more and more challenge. Australia and New Zealand are the two countries recognized as the ones with the most stringent inspection and quarantine measures in the world. The mail inspection work in China, Australia and New Zealand was compared on the aspects of mail quarantine system, inspection, quarantine treatment and punishment, based on which something worth learning and referring could be found and some suggestions were put forward, with the aim to provide theoretical basis for the animal and plant quarantine of entry mails. 展开更多
关键词 China AUSTRALIA New Zealand Animal and plant quarantine Entry mail
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Structural Carpentry in Qing Dynasty-A Framework for the Hierarchically Modularized Chinese Timber Structural Design 被引量:1
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作者 龚清宇 《Transactions of Tianjin University》 EI CAS 2002年第1期16-21,共6页
This article, by using mathematical expressions, offers a scientific framework for understanding how the grading system of Qing′s structural carpentry determines the design and construction in the grand style timber... This article, by using mathematical expressions, offers a scientific framework for understanding how the grading system of Qing′s structural carpentry determines the design and construction in the grand style timber architecture.The Qing′s grand style timber structure, which is ready for prefabrication and assembly, is extremely hierarchical oriented and significantly standardized. The general procedure in designing a grand style timber structure is to start with the grade that defines the basic module (dou kou); next comes with the number of bracket set (cuan), the number of longitudinal bays and the number of purlins which affect its plan and cross section; thirdly choose a roof type that determines its longitudinal section and the facade as well. A series of formulae are conducted to help depict the layout, cross sectional roof curvature and special longitudinal treatments in 4 sloped and 9 spined roofs respectively. 展开更多
关键词 structural carpentry mathematical expression grand style Qing Dynasty modular system Chinese timber structural design
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A study on the temporal and spatial characteristics of droughts following earthquakes
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作者 张凯 汤懋苍 高晓清 《Applied Geophysics》 SCIE CSCD 2013年第4期488-495,513,共9页
According to the "jacking-up" theory, which relates the cause of earthquakes to outer core convection ascension bodies, the crust will gradually recover after an earthquake. In such cases, the crust is stretched, th... According to the "jacking-up" theory, which relates the cause of earthquakes to outer core convection ascension bodies, the crust will gradually recover after an earthquake. In such cases, the crust is stretched, the underground temperature is reduced, precipitation decreases, and drought occurs. In this paper, precipitation is compared with ground temperature and seismic data to determine the spatial and temporal relationship between earthquakes and subsequent droughts. Our objective is to develop a new method of drought prediction. With a few exceptions in location, the analysis of the first drought to occur after the Ms 〉 7 earthquakes in China's Mainland and the adjacent areas since 1950 shows that droughts tended to occur in regions near earthquake epicenters and in the eastern regions of the epicenters at the same latitude within six months after the earthquakes. In addition, and the differences between the starting time of the earthquakes and the droughts nearly share the same probability of 0 to 6 months. After careful analysis of 34 Ms 〉 6.5 earthquakes occurring in western China from 1980 to 2011, we determined that a second drought tends to occur approximately six months following the first drought, indicating a quasi-half-year period. Moreover, the duration of the quasi-half-year fluctuation increases with the magnitude of earthquake, at approximately 2.5 years for Ms 6.5 earthquake and approximately 5 years for Ms 8 earthquake. 展开更多
关键词 EARTHQUAKE crust recovery quasi-half-year period epicenter drought area side drought area
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Analysis of Prese nt Operating Situati on of Large Size Coal-F ired Utility Boilers
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作者 许传凯 袁颖 《Electricity》 2003年第1期24-29,共6页
Large size utility boilers develop rapidly in China, both their reliability and economics have reached better level. The operating situations of various existing boilers on the basis of different coals are analyzed, i... Large size utility boilers develop rapidly in China, both their reliability and economics have reached better level. The operating situations of various existing boilers on the basis of different coals are analyzed, it is held that, the notable energy imbalance of furnace exit, ever existing in the tangential firing boilers has been solved, with comparatively lower NOX emission concentration of gained. The higher NOX emission concentration and furnace slagging etc. problems existing in wall firing boilers are notable. The comprehensive analysis shows that, it is appropriate to choose lower furnace volume heat release rate and higher flame height in the type selection design of boilers, and sufficient margin should be kept in the selection of coal pulverizing mills. 展开更多
关键词 coal-fired boiler operating performance COMBUSTION slagging and fouling NOX emission
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Factors Influencing Large-scale Operation of Large Grain Farmers in Northeast China
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作者 刘文新 何秀丽 《Agricultural Science & Technology》 CAS 2017年第12期2622-2627,2632,共7页
With the grain yield accounting for 20% of the whole country, the north- east China is a strategic region for ensuring national grain security and also a most centralized region of large grain farmers. Through a sampl... With the grain yield accounting for 20% of the whole country, the north- east China is a strategic region for ensuring national grain security and also a most centralized region of large grain farmers. Through a sampling survey of large grain farmers in 15 counties and cities of northeast China, with the aid of SPSS and AMOS software, using multiple regression analysis and structural equation modeling, this paper made a quantitative analysis on the influence of the subjective and ob- jective factors of large grain farmers on their large-scale management. The results showed that the age structure, educational level, family operating capital, yield ex- pectation and protective farming awareness of large grain farmers are the positive factors influencing their large scale operation due to agricultural subsidy policy. By comparison, the number of agricultural machinery and equipment owned by family, regional labor force, expectation for future income, and expectation for contractual scale become negative factors influencing large-scale operation of large grain farm- ers because of agricultural policies. When the future expectation, self conditions, family endowment, and operation conditions of large grain farmers increase one unit, their large scale operation motivation will increase by 0.692, 0.689, 0.487 and 0.363 units respectively. Thus, increasing the future expectation and self conditions of large grain farmers is a key factor for promoting large scale operation of farmland. 展开更多
关键词 Large grain farmers Large-scale operation Motivation Northeast China
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First record of the genus Sacculogalumna Engelbrecht(Oribatida:Galumnidae) in China,with description of a new species
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作者 梁文琴 杨茂发 黄荣 《Entomotaxonomia》 CSCD 北大核心 2012年第2期489-493,共5页
The genus Sacculogalumna Engelbrecht, 1973 is reported for the first time from China, a new species of this genus, S. suiyangensis sp. nov., from Kuankuoshui National Nature Reserve in Suiyang County of Guizhou Provin... The genus Sacculogalumna Engelbrecht, 1973 is reported for the first time from China, a new species of this genus, S. suiyangensis sp. nov., from Kuankuoshui National Nature Reserve in Suiyang County of Guizhou Province, is described. This new species is characterized by the short interlamellar setae or absent; slightly fusiform sensillus; distinct notogastral setae; small and rounded area porosa postanalis (Ap). A table for distinguishing the known species and new one in the genus is provided. 展开更多
关键词 ORIBATIDA Galumnidae Sacculogalumna new species new record China
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Performance value of high risk factors in colorectal cancer screening in China 被引量:44
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作者 Wen Meng Shan-Rong Cai +3 位作者 Lun Zhou Qi Dong Shu Zheng Su-Zhan Zhang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第48期6111-6116,共6页
AIM:To analyze the performance value of high risk factors in population-based colorectal cancer(CRC) screening in China.METHODS:We compared the performance value of the immunochemical fecal occult blood test(iFOBT) an... AIM:To analyze the performance value of high risk factors in population-based colorectal cancer(CRC) screening in China.METHODS:We compared the performance value of the immunochemical fecal occult blood test(iFOBT) and other high risk factors questionnaire in a population sample of 13 214 community residents who completed both the iFOBT and questionnaire investigation.Patients with either a positive iFOBT and/or questionnaire were regarded as a high risk population and those eligible were asked to undergo colonoscopy.RESULTS:The iFOBT had the highest positive predictive value and negative predictive value in screening for advanced neoplasia.The iFOBT had the highest sensitivity,lowest number of extra false positive results associated with the detection of one extra abnormality for screening advanced neoplasias and adenomas.A history of chronic cholecystitis or cholecystectomy,chronic appendicitis or appendectomy,and chronic diarrhea also had a higher sensitivity than a history of adenomatous polyps in screening for advanced neoplasias and adenomas.The sensitivity of a history of chronic cholecystitis or cholecystectomy was highest among the 10 high risk factors in screening for nonadenomatous polyps.A history of chronic appendicitis or appendectomy,chronic constipation,chronic diarrhea,mucous and bloody stool,CRC in first degree relatives,malignant tumor and a positive iFOBT also had higher sensitivities than a history of adenomas polyps in screening for non-adenomatous polyps.Except for a history of malignant tumor in screening for non-adenomatous polyps,the gain in sensitivity was associated with an increase in extra false positive results associated with the detection of one extra abnormality.CONCLUSION:The iFOBT may be the best marker for screening for advanced neoplasias and adenomas.Some unique high risk factors may play an important role in CRC screening in China. 展开更多
关键词 Colorectal cancer Cancer screening FECES Occult blood Risk factors Predictive value of tests
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Screening of Chinese Herbal Medicines Resistant to Chicken Escherichia coli and Infectious Laryngotracheitis Virus
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作者 史秋梅 高桂生 +2 位作者 高光平 张艳英 沈萍 《Agricultural Science & Technology》 CAS 2012年第11期2415-2418,共4页
[Objective] This study aimed to screen Chinese herbal medicines resistant to Chicken Escherichia coli and infectious laryngotracheitis virus. [Methed] Conven- tional punch method, test tube method and plate dilution m... [Objective] This study aimed to screen Chinese herbal medicines resistant to Chicken Escherichia coli and infectious laryngotracheitis virus. [Methed] Conven- tional punch method, test tube method and plate dilution method were adopted for in vitro susceptibility test of chicken E, coil strains O5 and O8 using 13 kinds of Chi- nese herbal medicines including Sanguisorba officinalis, Coptis chinensis, Anemar- rhena asphodeloides, Strobilanthes cusia, Agastache rugosa, etc.; chicken embryo inoculation experiment was adopted to screen Chinese herbal medicines resistant to chicken infectious laryngotracheitis virus. [Result] Sanguisorba officinalis, Fructus mume, Rheum officinale, Coptis chinensis, Herba Taraxaci, Anemarrhena asphode- Ioides, Scutellaria baicalensis and Rhizoma Fagopyri Cymosi had ideal antibacterial effect against chicken E. coil strain O5; Sanguisorba officinalis, Fructus mume, Rheum officinale, Coptis chinensis, Herba taraxaci and Rhizoma Fagopyri Cymosi had ideal antibacterial effect against chicken E. coil strain 08; other Chinese herbal medicines showed relatively poor or no antibacterial effect. Results of chicken embryo inoculation experiment showed that nine kinds of Chinese herbal medicines showed relatively strong anti-lLTV effect, including Forsythia suspensa, Radix Isatidis, Fofium isatidis, Flos Ionicerae, Radix codonopsis, Radix astragali, Atractylodes, Radix gly- cyrrhizae, and Pericarpium granati. [Conclusion] The study laid the foundation for fur- ther development of Chinese herbal compound preparations to treat chicken cofibacil- Iosis, infectious laryngotracheitis and other bacterial, viral diseases. 展开更多
关键词 Chinese herbal medicine SCREENING Escherichia coli Chicken infectiouslaryngotracheitis virus
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Chinese-translated Behavioral Regulation in Exercise Questionnaire-2: Evidence from university students in the Mainland and Hong Kong of China 被引量:6
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作者 Jing Dong Liu Pak-Kwong Chung +1 位作者 Chun-Qing Zhang Gangyan Si 《Journal of Sport and Health Science》 SCIE 2015年第3期228-234,共7页
Purpose: The purpose of the study was to examine the psychometric properties of the Chinese-translated Behavioral Regulation in Exercise Questionnaire-2 (C-BREQ-2) among Chinese university students from the Mainlan... Purpose: The purpose of the study was to examine the psychometric properties of the Chinese-translated Behavioral Regulation in Exercise Questionnaire-2 (C-BREQ-2) among Chinese university students from the Mainland and Hong Kong of China. Methods: University students from the Mainland (n = 191) and Hong Kong (n=194) of China participated in this study. Factorial validity, discriminant validity, nomological validity, internal reliability, and measurement invariance across sample of the C-BREQ-2 were examined. Results: Confirmatory factor analysis provided support for the factorial validity of the 18-item, 5-factor structure C-BREQ-2. Examination of the 95% confidence interval of the inter-factor correlations suggested that the C-BREQ-2 assesses related but distinct constructs, which provided support for its discriminant validity. The internal consistency reliability of the C-BREQ-2 was found acceptable. Examination of the pattern of inter-factor correlations between different regulations suggested that a simplex-like pattern was displayed, which provided evidence for the nomological validity of C-BREQ-2. The results from multi-group confirmatory factor analysis suggested that the factor loadings and variances/ covariances of the C-BREQ-2 measurement model were invariant across the Chinese university students in the Mainland and Hong Kong of China. Conclusion: The current study provided further psychometric evidence for the C-BREQ-2, which makes the further application and research of self-determination theory (SDT) based motivation in relation to exercise and physical activity in the Mainland of China context possible. 展开更多
关键词 Behavioral regulation CHINESE Motivation Reliability Validity
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Validation of the chinese version of the EORTC QLQ-CR29 in patients with colorectal cancer 被引量:16
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作者 Jin-bo Lin Lei Zhang +18 位作者 Dong-Wen Wu Zhou-Huan xi xue-Jun Wang Yun-Shou Lin Wakana Fujiwara Jing-Ru Tian Min Wang Peng Peng Ai Guo Zhen Yang Le Luo Ling-Ya Jiang Qia-Qia Li xue-Ying Zhang Yun-Feng Zhang Hou-Wei xu bing Yang xun-Lin Li Yi-xiong Lei 《World Journal of Gastroenterology》 SCIE CAS 2017年第10期1891-1898,共8页
AIM To assess the validity and reliability of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Colorectal Cancer 29 (EORTC QLQ-CR29) in Chinese patients with colorectal canc... AIM To assess the validity and reliability of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Colorectal Cancer 29 (EORTC QLQ-CR29) in Chinese patients with colorectal cancer (CRC). METHODS From March 2014 to January 2015, 356 patients with CRC from four different hospitals in China were enrolled in the study, and all patients self-administered the EORTC QLQ-CR29 and the quality of life core questionnaire (EORTC QLQ-C30). Evaluation of the scores was based on the Karnofsky Performance Scale (KPS). The reliability and validity of the questionnaires were assessed by Cronbach's proportional to coefficient, the Spearman correlation test and Wilcoxon rank sum test. RESULTS The EORTC QLQ-CR29 showed satisfactory reliability (proportional to > 0.7), although the urinary frequency and blood and mucus in stool dimensions had only moderate reliability (proportional to = 0.608). The multitrait scaling analyses showed good convergent (r > 0.4) and discriminant validity. Significant differences were obtained for each item in the different KPS subgroups (KPS <= 80; KPS > 80). Body image and most single- item dimensions showed statistically significant differences in patients with a stoma compared with the rest of the patients. CONCLUSION The EORTC QLQ-CR29 exhibits high validity and reliability in Chinese patients with CRC, and can therefore be recommended as a valuable tool for the assessment of quality of life in these patients. 展开更多
关键词 Colorectal cancer Health-related quality of life EORTC QLQ-CR29 China's Mainland
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Hyperthermic intraperitoneal chemotherapy for gastric and colorectal cancer in China's Mainland 被引量:18
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作者 Tao Suo Haile Mahteme Xin-Yu Qin 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第8期1071-1075,共5页
AIM:To investigate the current status of peritoneal carcinomatosis(PC) management,as well as the usage of cytoreductive surgery(CRS) and hyperthermic intraperitoneal chemotherapy(HIPEC) in China's Mainland.METHODS... AIM:To investigate the current status of peritoneal carcinomatosis(PC) management,as well as the usage of cytoreductive surgery(CRS) and hyperthermic intraperitoneal chemotherapy(HIPEC) in China's Mainland.METHODS:A potentially curative therapeutic strategy for selecting patients with PC,known as "Techniques",consists of CRS in combination with HIPEC.A systemic search of published works and clinical trials was performed.Additional papers were retrieved by crosschecking references and obtaining information from Chinese oncologists and relevant conferences.One hundred and one papers and one registered clinical trial on HIPEC were included.RESULTS:A literature review identified 86 hospitals in 25 out of all 31 areas of China's Mainland that perform HIPEC.The earliest report included in our survey was published in 1993.Different approaches to HIPEC have been utilized,i.e.palliative,prophylactic,and possiblycurative treatment.Only one center has consistently performed HIPEC according to the "Sugarbaker Protocol",which involves evaluating the extent of PC with peritoneal cancer index and the results of CRS with the completeness of cytoreduction.Positive preliminary results were reported:7 of 21 patients with PC survived,free of tumors,during an 8-43-mo follow-up period.Hyperthermic strategies that include HIPEC have been practiced for a long time in China's Mainland,whereas the "Sugarbaker Protocol/Techniques" has been only rarely implemented in China.The Peritoneal Surface Oncology Group International hosts a biannual workshop with the intent to train more specialists in this field and provide support for the construction of quality treatment centers,especially in developing countries like China,whose population is huge and has a dramatically increased incidence of cancer.CONCLUSION:To popularize Sugarbaker Protocol/Techniques in China's Mainland in PC management arising from gastric cancer or colorectal cancer will be the responsibility of the upcoming Chinese Peritoneal Surface Oncology Group. 展开更多
关键词 Peritoneal carcinomatosis HYPERTHERMIA Prophylactic strategy Sugarbaker Protocol/techniques China's Mainland
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Trends in Seasonal Precipitation over China during 1961-2007 被引量:14
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作者 WANG Yi YAN Zhong-Wei 《Atmospheric and Oceanic Science Letters》 2009年第3期165-171,共7页
Trends in six indices of precipitation in China for seasons during 1961-2007 were analyzed based on daily observations at 587 stations. The trends were estimated by using Sen's method with Mann-Kendall's test ... Trends in six indices of precipitation in China for seasons during 1961-2007 were analyzed based on daily observations at 587 stations. The trends were estimated by using Sen's method with Mann-Kendall's test for quantifying the significance. The geographical patterns of trends in the seasonal indices of extremes were similar to those of total precipitation. For winter, both total and extreme precipitation increased over nearly all of China, except for a small part of northern China. Increasing trends in extreme precipitation also occurred at many stations in southwestern China for spring and the midlower reaches of the Yangtze River and southern China for summer. For autumn, precipitation decreased in eastern China, with an increasing length of maximum dry spell, implying a drying tendency for the post-rainy season. Wetting trends have prevailed in most of western China for all seasons. The well-known 'flood in the south and drought in the north' trend exists in eastern China for summer, while a nearly opposite trend pattern exist for spring. 展开更多
关键词 climate trend climate extremes indices PRECIPITATION dry spell China
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Variation in Principal Modes of Midsummer Precipitation over Northeast China and Its Associated Atmospheric Circulation 被引量:4
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作者 Tingting HAN Shengping HE +1 位作者 Huijun WANG Xin HAO 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2019年第1期55-64,共10页
This study documents the first two principal modes of interannual variability of midsummer precipitation over Northeast China (NEC) and their associated atmospheric circulation anomalies. It is shown that the first ... This study documents the first two principal modes of interannual variability of midsummer precipitation over Northeast China (NEC) and their associated atmospheric circulation anomalies. It is shown that the first principal mode exhibits the largest amount of variability in precipitation over the south of NEC (referred to as the south mode), whereas the second principal mode behaves with the greatest precipitation anomaly over the north of NEC (referred to as the north mode). Further findings reveal that, through modulating moisture transportation and upper- and lower-troposphere divergence circulation as well as vertical movement over NEC, the anomalous northwestern Pacific anticyclone and the anticyclone centered over northern NEC exert the dominant influence on the south and north modes, respectively. Additionally, it is quantitatively estimated that water vapor across the southern boundary of NEC dominates the moisture budget for the south mode, while the north mode has a close connection with moisture through NEC's northern and western boundal'ies. Furthermore, the north (south) mode is strongly related to the intensity (meridional shift) of the East Asian westerly jet. 展开更多
关键词 Northeast China PRECIPITATION northwestern Pacific anticyclone Northeast China anticyclone
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Climatology and Trends of High Temperature Extremes across China in Summer 被引量:8
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作者 WEI Ke CHEN Wen 《Atmospheric and Oceanic Science Letters》 2009年第3期153-158,共6页
Based on the daily maximum air temperature data from 300 stations in China from 1958 to 2008, the climatological distribution of the number of days with high temperature extremes (HTEs, maximum temperatures higher th... Based on the daily maximum air temperature data from 300 stations in China from 1958 to 2008, the climatological distribution of the number of days with high temperature extremes (HTEs, maximum temperatures higher than 35℃) are studied with a focus on the long-term trends. Although the number of HTE days display well-defined sandwich spatial structures with significant decreasing trends in central China and increasing trends in northern China and southern China, the authors show that the decrease of HTE days in central China occurs mainly in the early period before the 1980s, and a significant increase of HTE days dominates most of the stations after the 1980s. The authors also reveal that there is a jump-like acceleration in the number of HTE days at most stations across China since the mid 1990s, especially in South China, East China, North China, and northwest China. 展开更多
关键词 high temperature extremes hot days long term trend climate regime
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