|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Climatology and Interannual Variability of the Southeast Asian Summer Monsoon显示文摘ClimatologyandInterannualVariabilityoftheSoutheastAsianSummerMonsoonK.-M.LauLaboratoryforAtmospheres,Code913,NASA-GoddardSpac... | K. M. Lau Song Yang | 1997 | Advances in Atmospheric Sciences1997,14,2: | 123 |
| 2 | The Interannual Variability of East Asian Winter Monsoon and Its Relation to the Summer Monsoon显示文摘Based on the NCEP / NCAR reanalysis data the interannual variability of the East Asian winter monsoon (EAWM) is studied with a newly defined EAWM intensity index. The marked features for a strong (weak) winter monsoon include strong (weak) northerly winds along coastal East Asia, cold (warm) East Asian continent and surrounding sea and warm (cold) ocean from the subtropical central Pacific to the tropical western Pacific, high (low) pressure in East Asian continent and low (high) pressure in the adjacent ocean and deep (weak) East Asian trough at 500 hPa. These interannual variations are shown to be closely connected to the SST anomaly in the tropicaI Pacific, both in the western and eastern Pacific. The results suggest that the strength of the EAWM is mainly innuenced by the processes associated with the SST anomaly over the tropical Pacific. The EAWM generally becomes weak when there is a positive SST anomaly in the tropical eastern Pacific (E1 Nino), and it becomes strong when there is a negative SST anomaly (La Nina). Moreover, the SST anomaly in the South China Sea is found to be closely related to the EAWM and may persist to the following summer. Both the circulation at 850 hPa and the rainfall in China confirm the connection between the EAWM and the following East Asian summer monsoon. The possibIe reason for the recent 1998 summer flood in China is briefly discussed too. | 陈文 Han-F.Graf 黄荣辉 | 2000 | Advances in Atmospheric Sciences2000,17,1: | 146 |
| 3 | A Nine-layer Atmospheric General Circulation Model and Its Performance显示文摘ANine-layerAtmosphericGeneralCirculationModelandItsPerformanceWuGuoxiong(吴国雄),LiuHui(刘辉),ZhaoYucheng(赵宇澄),andLiWeiping(李伟平),(... | 吴国雄 刘辉 赵宇澄 李伟平 | 1996 | Advances in Atmospheric Sciences1996,13,1: | 59 |
| 4 | Cardiac autonomic neuropathy in patients with diabetes mellitus显示文摘Cardiac autonomic neuropathy(CAN)is an often overlooked and common complication of diabetes mellitus.CAN is associated with increased cardiovascular morbidity and mortality.The pathogenesis of CAN is complex and involves a cascade of pathways activated by hyperglycaemia resulting in neuronal ischaemia and cellular death.In addition,autoimmune and genetic factors are involved in the development of CAN.CAN might be subclinical for several years until the patient develops resting tachycardia,exercise intolerance,postural hypotension,cardiac dysfunction and diabetic cardiomyopathy.During its sub-clinical phase,heart rate variability that is influenced by the balance between parasympathetic and sympathetic tones can help in detecting CAN before the disease is symptomatic.Newer imaging techniques(such as scintigraphy)have allowed earlier detection of CAN in the pre-clinical phase and allowed better assessment of the sympathetic nervous system.One of the main difficulties in CAN research is the lack of a universally accepted definition of CAN;however,the Toronto Consensus Panel on Diabetic Neuropathy has recently issued guidance for the diagnosis and staging of CAN,and also proposed screening for CAN in patients with diabetes mellitus.A major challenge,however,is the lack of specific treatment to slow the progression or prevent the development of CAN.Lifestyle changes,improved metabolic control might prevent or slow the progression of CAN.Reversal will require combination of these treatments with new targeted therapeutic approaches.The aim of this article is to review the latest evidence regarding the epidemiology,pathogenesis,manifestations,diagnosis and treatment for CAN. | Gerasimos Dimitropoulos Abd A Tahrani Martin J Stevens | 2014 | World Journal of Diabetes2014,5,1: | 48 |
| 5 | Influence of interannual variability of Antarctic oscillation on mei-yu along the Yangtze and Huaihe River valley and its importance to prediction显示文摘Both correlation analysis and case study indi-cate that Antarctic oscillation (AAO) is closely related withsummer rainfall in eastern China. When AAO is stronger inboreal spring, especially in May, there is more mei-yu rain-fall in summer with a longer period along the Yangtze andHuaihe River valley. In contrast, there is less rainfall with ashorter period corresponding to a weaker AAO. Besides, ananomalous AAO changes the position and intensity of severalcirculation systems, which are important to summer rainfallalong the Yangtze and Huaihe River valley. Furthermore, theAntarctic sea ice is negatively correlated with the intensity ofAAO with a 6-month leading time. The result in this studyprovides a new method for the prediction of mei-yu. | GAO Hui~(1,2), XUE Feng~1 WANG Huijun~1 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China 2. Department of Atmospheric Sciences, Nanjing Institute of Meteorology, Nanjing 210044. China | 2003 | Chinese Science Bulletin2003,48,S2: | 34 |
| 6 | Model Study on the Interannual Variability of Asian Winter Monsoon and Its Influence显示文摘ModelStudyontheInterannualVariabilityofAsianWinterMonsoonandItsInfluenceJiLiren(纪立人),SunShuqing(孙淑清)InstituteofAtmosphericPhy... | 纪立人 孙淑清 | 1997 | Advances in Atmospheric Sciences1997,14,1: | 32 |
| 7 | The Interannual Variability of East Asian Monsoon and Its Relationship with SST in a Coupled Atmosphere-Ocean-Land Climate Model显示文摘Based on a 200 year simulation and reanalysis data (1980-1996), the general characteristics of East Asian monsoon (EAM) were analyzed in the first part of the paper. It is clear from this research that the South Asian monsoon (SAM) defined by Webster and Yang (1992) is geographically and dynamically different from the East Asian monsoon (EAM). The region of the monsoon defined by Webster and Yang (1992) is located in the tropical region of Asia (40-110°E, 10-20°N), including the Indian monsoon and the Southeast Asian monsoon, while the EAM defined in this paper is located in the subtropical region of East Asia (110-125°E, 20-40°N). The components and the seasonal variations of the SAM and EAM are different and they characterize the tropical and subtropical Asian monsoon systems respectively. A suitable index (EAMI) for East Asian monsoon was then defined to describe the strength of EAM in this paper. In the second part of the paper, the interannual variability of EAM and its relationship with sea surface temperature (SST) in the 200 year simulation were studied by using the composite method, wavelet transformation. and the moving correlation coefficient method. The summer EAMI is negatively correlated with ENSO (E1 Nino and Southern Oscillation) cycle represented by the NINO3 sea surface temperature anomaly (SSTA) in the preceding April and January. while the winter EAM is closely correlated with the succeeding spring SST over the Pacific in the coupled model. The general differences of EAM between E1 Nino and La Nina cases were studied in the model through composite analysis. It was also revealed that the dominating time scales of EAM variability may change in the long-term variation and the strength may also change. The anomalous winter EAM may have some correlation with the succeeding summer EAM. but this relationship may disappear sometimes in the long-term climate variation. Such time-dependence was found in the relationship between EAM and SST in the long-term climate simulation as well. | 王会军 | 2000 | Advances in Atmospheric Sciences2000,17,1: | 33 |
| 8 | The Influence of Tibetan Plateau on the Interannual Variability of Asian Monsoon显示文摘TheInfluenceofTibetanPlateauontheInterannualVariabilityofAsianMonsoon①WuAiming(吴爱明)andNiYunqi(倪允琪)DepartmentofAtmosphericScie... | 吴爱明 倪允琪 | 1997 | Advances in Atmospheric Sciences1997,14,4: | 30 |
| 9 | The pathway of the interdecadal variability in the Pacific Ocean显示文摘Cases of the interdecadal variability in the Pacific Ocean and their evolution were examined in the paper with the statistic methods (CEOF and composite analysis) over the period of 1950-1993. Observations of oceanic temperatures in the upper 400 m revealed an obvious region of the interdecadal signals in the central North Pacific. Such signals propagated south westward, then subducted to the subtropics. The hypothesized link for interdecadal oceanic variability between the subtropics and the tropics, especially with the western tropical Pacific was unraveled in order to detect the cause of decadal signals in the tropics. The thermal anomalies subducted in the central North Pacific east to the dateline only reach 18°N. There has been no further southward propagation since then due to a certain barrier. The origin of the interdecadal signals in the western tropical Pacific was traced to the southern tropical Pacific. There is a meridional pathway around the dateline where the signals were loaded. | WANG Dongxiao & LIU Zhengyu1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China 2. Department of Atmospheric & Oceanic Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA Correspondence should be addressed to Wang Dongxiao | 2000 | Chinese Science Bulletin2000,45,17: | 24 |
| 10 | Serum levels of homocysteine and circulating antioxidants associated with heart rate variability in patients with unstable angina pectoris显示文摘To the Editor:Autonomic dysfunction is an important factor in the pathogenesis of unstable angina pectoris (UAP).It affects coronary artery systolic function,induces coronary spasm,aggravates myocardial ischemia,reduces ventricular fibrillation threshold,and increases the incidence of sudden cardiac death in UAP. | Yong-Cheng Wang Du-Fang Ma Ping Jiang Jin-Long Yang Yi-Mei Zhang Xiao Li | 2019 | Chinese Medical Journal2019,,1: | 23 |
| 11 | Diabetes and cardiac autonomic neuropathy: Clinical manifestations, cardiovascular consequences, diagnosis and treatment显示文摘Cardiac autonomic neuropathy(CAN) is a frequent chronic complication of diabetes mellitus with potentially life-threatening outcomes. CAN is caused by the impairment of the autonomic nerve fibers regulating heart rate, cardiac output, myocardial contractility, cardiac electrophysiology and blood vessel constriction anddilatation. It causes a wide range of cardiac disorders, including resting tachycardia, arrhythmias, intraoperative cardiovascular instability, asymptomatic myocardial ischemia and infarction and increased rate of mortality after myocardial infarction. Etiological factors associated with autonomic neuropathy include insufficient glycemic control, a longer period since the onset of diabetes, increased age, female sex and greater body mass index. The most commonly used methods for the diagnosis of CAN are based upon the assessment of heart rate variability(the physiological variation in the time interval between heartbeats), as it is one of the first findings in both clinically asymptomatic and symptomatic patients. Clinical symptoms associated with CAN generally occur late in the disease process and include early fatigue and exhaustion during exercise, orthostatic hypotension, dizziness, presyncope and syncope. Treatment is based on early diagnosis, life style changes, optimization of glycemic control and management of cardiovascular risk factors. Medical therapies, including aldose reductase inhibitors, angiotensin-converting enzyme inhibitors, prostoglandin analogs and alpha-lipoic acid, have been found to be effective in randomized controlled trials. The following article includes the epidemiology, clinical findings and cardiovascular consequences, diagnosis, and approaches to prevention and treatment of CAN. | Akif Serhat Balc?o?lu Haldun Müderriso?lu | 2015 | World Journal of Diabetes2015,6,1: | 22 |
| 12 | Spatial variability of soil total nitrogen,phosphorus and potassium in Renshou County of Sichuan Basin,China显示文摘Understanding soil nutrient distributions and the factors affecting them are crucial for fertilizer management and environmental protection in vulnerable ecological regions.Based on 555 soil samples collected in 2012 in Renshou County,located in the purple soil hilly area of Sichuan Basin,China,the spatial variability of soil total nitrogen(TN),total phosphorus(TP)and total potassium(TK)was studied with geostatistical analysis and the relative roles of the affecting factors were quantified using regression analysis.The means of TN,TP and TK contents were 1.12,0.82 and 9.64 g kg^(–1),respectively.The coefficients of variation ranged from 30.56 to 38.75%and the nugget/sill ratios ranged from 0.45 to 0.61,indicating that the three soil nutrients had moderate variability and spatial dependence.Two distribution patterns were observed.TP and TK were associated with patterns of obvious spatial distribution trends while the spatial distribution of TN was characterized by higher variability.Soil group,land use type and topographic factors explained 26.5,35.6 and 8.4%of TN variability,respectively,with land use being the dominant factor.Parent material,soil group,land use type and topographic factors explained 17.5,10.7,12.0 and 5.0%of TP variability,respectively,and both parent material and land use type played important roles.Only parent material and soil type contributed to TK variability and could explain 25.1 and 13.7%of TK variability,respectively.More attention should focus on adopting reasonable land use types for the purposes of fertilizer management and consider the different roles of the affecting factors at the landscape scale in this purple soil hilly area. | GAO Xue-song XIAO Yi DENG Liang-ji LI Qi-quan WANG Chang-quan LI Bing DENG Ou-ping ZENG Min | 2019 | Journal of Integrative Agriculture2019,18,2: | 19 |
| 13 | Asymmetric variability between maximum and minimum temperatures in Northeastern Tibetan Plateau:Evidence from tree rings显示文摘Ecological systems in the headwaters of the Yellow River, characterized by hash natural environmental conditions, are very vulnerable to climatic change. In the most recent decades, this area greatly attracted the public's attention for its more and more deteriorating environmental conditions. Based on tree-ring samples from the Xiqing Mountain and A'nyêmagên Mountains at the headwaters of the Yellow River in the Northeastern Tibetan Plateau, we reconstructed the minimum temperatures in the winter half year over the last 425 years and the maximum temperatures in the summer half year over the past 700 years in this region. The variation of minimum temperature in the winter half year during the time span of 1578―1940 was a relatively stable trend, which was followed by an abrupt warming trend since 1941. However, there is no significant warming trend for the maximum temperature in the summer half year over the 20th century. The asymmetric variation patterns between the minimum and maximum temperatures were observed in this study over the past 425 years. During the past 425 years, there are similar variation patterns between the minimum and maximum temperatures; however, the minimum temperatures vary about 25 years earlier compared to the maximum temperatures. If such a trend of variation patterns between the minimum and maximum temperatures over the past 425 years continues in the future 30 years, the maximum temperature in this region will increase significantly. | Jacoby GORDON | 2008 | Science China Earth Sciences2008,51,1: | 19 |
| 14 | A Possible Linkage in the Interdecadal Variability of Rainfall over North China and the Sahel显示文摘The instrumental records of precipitation, including some historical documentary evidence, show that the rainfall in North China during the rainy season (July and August) exhibits an interdecadal variability similar to the Sahelian rainfall. Both these areas exhibited a weak interdecadal rainfall variability prior to the 1950s, and experienced a long-lasting drought since the 1960s, with two rainfall decreasing transitions, one around the year 1965 and another in the late 1970s. NCEP/NCAR reanalysis data are used to analyze the associated changes in atmospheric circulation during the second decrease transition. The changes of local atmospheric circulation at the end of the 1970s, at both lower and upper levels, contribute to the less precipitation in North China and the Sahel. | 任保华 陆日宇 肖子牛 | 2004 | Advances in Atmospheric Sciences2004,21,5: | 17 |
| 15 | Diagnostic Study on Seasonality and Interannual Variability of Wind Field显示文摘Based on NCEP/ NCAR reanalysis data during 1980-1994, seasonality and interannual variability of the horizontal wind field are studied. It is shown that: (1) In the lower troposphere,there exist regions with maximum of seasonality in the tropics, the subtropics and high latitudes,which is called the tropicat subtropical and temperate-frigid monsoon region respectively. In theupper troposphere, the subtropical monsoon combines with the tropical monsoon as anonseparably planetary monsoon system. In the stratosphere, there is a belt with very largeseasonality in each hemisphere caused by the inversely seasonal circulation and by the establishment and collapse of the night jet. (2) Seasonal variation of the large-scale monsoon may generallybe attributed to that of the zonal wind, however, seasonal variation of the meridional wind is ofgreat importanee in East Asian monsoon region. (3) In monsoon region, interannual variability ofthe atmospheric general circulation is closely related to seasonal variation of monsoon, while in thetropical Pacific, it may considerably be influenced by the external factors such as sea surface temperature (SST) anomalies associnted with El Nino or La Nina event. Moreover, interannual variability undetgoes a pronounced annual cycle. | 薛峰 曾庆存 | 1999 | Advances in Atmospheric Sciences1999,16,4: | 15 |
| 16 | The CAMS Climate System Model and a Basic Evaluation of Its Climatology and Climate Variability Simulation显示文摘A new coupled climate system model(CSM) has been developed at the Chinese Academy of Meteorological Sciences(CAMS) by employing several state-of-the-art component models. The coupled CAMS-CSM consists of the modified atmospheric model [ECmwf-HAMburg(ECHAM5)], ocean model [Modular Ocean Model(MOM4)], sea ice model [Sea Ice Simulator(SIS)], and land surface model [Common Land Model(CoLM)]. A detailed model description is presented and both the pre-industrial and 'historical' simulations are preliminarily evaluated in this study.The model can reproduce the climatological mean states and seasonal cycles of the major climate system quantities,including the sea surface temperature, precipitation, sea ice extent, and the equatorial thermocline. The major climate variability modes are also reasonably captured by the CAMS-CSM, such as the Madden–Julian Oscillation(MJO), El Ni?o–Southern Oscillation(ENSO), East Asian Summer Monsoon(EASM), and Pacific Decadal Oscillation(PDO).The model shows a promising ability to simulate the EASM variability and the ENSO–EASM relationship. Some biases still exist, such as the false double-intertropical convergence zone(ITCZ) in the annual mean precipitation field,the overestimated ENSO amplitude, and the weakened Bjerknes feedback associated with ENSO; and thus the CAMS-CSM needs further improvements. | Xinyao RONG Jian LI Haoming CHEN Yufei XIN Jingzhi SU Lijuan HUA Tianjun ZHOU Yanjun QI Zhengqiu ZHANG Guo ZHANG Jianduo LI | 2018 | Journal of Meteorological Research2018,32,6: | 15 |
| 17 | Cardiac autonomic neuropathy: Risk factors, diagnosis and treatment显示文摘Cardiac autonomic neuropathy(CAN)is a serious complication of diabetes mellitus(DM)that is strongly associated with approximately five-fold increased risk of cardiovascular mortality.CAN manifests in a spectrum of things,ranging from resting tachycardia and fixed heart rate(HR)to development of'silent'myocardial infarction.Clinical correlates or risk markers for CAN are age,DM duration,glycemic control,hypertension,and dyslipidemia(DLP),development of other microvascular complications.Established risk factors for CAN are poor glycemic control in type 1 DM and a combination of hypertension,DLP,obesity,and unsatisfactory glycemic control in type 2DM.Symptomatic manifestations of CAN include sinus tachycardia,exercise intolerance,orthostatic hypotension(OH),abnormal blood pressure(BP)regulation,dizziness,presyncope and syncope,intraoperative cardiovascular instability,asymptomatic myocardial ischemia and infarction.Methods of CAN assessment in clinical practice include assessment of symptoms and signs,cardiovascular reflex tests based on HR and BP,short-term electrocardiography(ECG),QT interval prolongation,HR variability(24 h,classic24 h Holter ECG),ambulatory BP monitoring,HR turbulence,baroreflex sensitivity,muscle sympathetic nerve activity,catecholamine assessment and cardiovascular sympathetic tests,heart sympathetic imaging.Although it is common complication,the significance of CAN has not been fully appreciated and there are no unified treatment algorithms for today.Treatment is based on early diagnosis,life style changes,optimization of glycemic control and management of cardiovascular risk factors.Pathogenetic treatment of CAN includes:Balanced diet and physical activity;optimization of glycemic control;treatment of DLP;antioxidants,first of allα-lipoic acid(ALA),aldose reductase inhibitors,acetylL-carnitine;vitamins,first of all fat-soluble vitamin B1;correction of vascular endothelial dysfunction;prevention and treatment of thrombosis;in severe cases-treatment of OH.The promising methods include prescription of prostacyclin analogues,thromboxane A2 blockers and drugs that contribute into strengthening and/or normalization of Na^+,K^+-ATPase(phosphodiesterase inhibitor),ALA,dihomo-γ-linolenic acid(DGLA),ω-3 polyunsaturated fatty acids(ω-3 PUFAs),and the simultaneous prescription of ALA,ω-3 PUFAs and DGLA,but the future investigations are needed.Development of OH is associated with severe or advanced CAN and prescription of nonpharmacological and pharmacological,in the foreground midodrine and fludrocortisone acetate,treatment methods are necessary. | Victoria A Serhiyenko Alexandr A Serhiyenko | 2018 | World Journal of Diabetes2018,9,1: | 15 |
| 18 | Interannual Variability of the Convective Activities Associated with the East Asian Summer Monsoon Obtained from TBBV ariability显示文摘1.IntroductionSouthAsiaandEastAsiaareahugemonsoonsystem,inwhichtheEastAsianmonsoonisitssubmonsoonsystem.BecausetheEastAsiansu... | 任保华 黄荣辉 | 1999 | Advances in Atmospheric Sciences1999,16,1: | 13 |
| 19 | Spatial variability of soil water content and related factors across the Hexi Corridor of China显示文摘Soil water content(SWC) is a key factor limiting ecosystem sustainability in arid and semi-arid areas of the Hexi Corridor of China, which is characterized by an ecological environment that is vulnerable to climate change. However, there is a knowledge gap regarding the large-scale spatial distribution of SWC in this region. The specific objectives of this study were to determine the spatial distribution patterns of SWC across the Hexi Corridor and identify the factors responsible for spatial variation of SWC at a regional scale. This study collected and analyzed SWC in the 0–100 cm soil profile from 109 field sampling sites(farmland, grassland and forestland) across the Hexi Corridor in 2017. We selected 17 factors, including land use, topography(latitude, longitude, elevation, slope gradient, and slope aspect), soil properties(soil clay content, soil silt content, soil bulk density, saturated hydraulic conductivity, field capacity, and soil organic carbon content), climate factors(mean annual precipitation, potential evaporation, and aridity index), plant characteristic(vegetation coverage) and planting pattern(irrigation or rain-fed), as possible environmental variables to analyze their effects on SWC. The results showed that SWC was 0.083(±0.067) g/g in the 0–100 cm soil profile and decreased in the order of farmland, grassland and forestland. The SWC in the upper soil layers(0–20, 20–40 and 40–60 cm) had obvious difference when the mean annual precipitation differed by 200 mm. The SWC decreased from southeast to northwest following the same pattern as precipitation, and had a moderate to strong spatial dependence in a large effective range(75–378 km). The SWC showed a similar distribution and had no significant difference between soil layers in the 0–100 cm soil profile. The principal component analysis showed that the mean annual precipitation, geographical position(longitude and latitude) and soil properties(soil bulk density and soil clay content) were the main factors dominating the variance of environmental variables. A stepwise linear regression equation showed that plant characteristic(vegetation coverage) and soil properties(soil organic carbon content, field capacity and soil clay content) were the optimal factors to predict the variation of SWC. Soil clay content could be better to explain the SWC variation in the deeper soil layers compared with the other factors. | LI Xiangdong SHAO Ming'an ZHAO Chunlei JIA Xiaoxu | 2019 | Journal of Arid Land2019,11,1: | 12 |
| 20 | Probabilistic assessment of tunnel convergence considering spatial variability in rock mass properties using interpolated autocorrelation and response surface method显示文摘This study aims at the probabilistic assessment of tunnel convergence considering the spatial variability in rock mass properties. The method of interpolated autocorrelation combined with finite difference analysis is adopted to model the spatial variability of rock mass properties. An iterative procedure using the first-order reliability method(FORM) and response surface method(RSM) is employed to compute the reliability index and its corresponding design point. The results indicate that the spatial variability considerably affects the computed reliability index. The probability of failure could be noticeably overestimated in the case where the spatial variability is neglected. The vertical scale of fluctuation has a much higher effect on the probabilistic result with respect to the tunnel convergence than the horizontal scale of fluctuation. And the influence of different spacing of control points on the computational accuracy is investigated. | Qing Lü Zhipeng Xiao Jun Zheng Yuequan Shang | 2018 | Geoscience Frontiers2018,9,6: | 12 |