检索结果-南通市图书馆

Numerical Modelings of the Climatic Effects of the Land-Sea Distribution and Topography

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 1996年第3期13卷 383-398页

作者：钱永甫王谦谦nanjing institute of meteorology nanjing 210044 Department of Atmospheric Sciences Nanjing UniversityNanjing 210093

The effects of the land-sea contrast and the topography on the climatic properties are simulated rn this paper by use of a p- a incorporated coordinate system mode! in a zonal *** this paper we firstly discuss the statistical features of the model and find that the capability of the model is stable,with the same land-sea distribution and topography seven monthly mean climate states are close to one another,their variance is even less than the initial ***,we focally discuss the effects of the land-sea contrast and the topography on the modeled climate *** is pointed out that the land-sea contrast and the topography influence the atmosphere mainly through the heating ef-fect and the former has larger influences on the simulated large scale climate fields than the latter.

关键词： Climate modelings Land-sea contrast and topography

Possible effect of climate changes on the coastal zone of the Yangtze River Delta

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 1998年第1期8卷 42-51页

作者： Miao Qilong nanjing institute of meteorology, nanjing 210044, CHINA

A coastal historical evolution of the Yangtze River Delta was discussed in this paper on the basis of the historical data of the coastal zone and an estimation was made for the future change of the coast The emphasis was put on the future climate change that will have influence on the sea wall, coastal navigation and freshwater resources in the Delta It was also pointed out that the global warming and precipitation increase in the Yangtze River Valley may exert more impact on the zone In addition, some measures describing how to adapt to the climate change and reduce its impact were put forward

关键词： climate change greenhouse effect sea surface rising the Yangtze River Delta coastal zone

Case studies on mesoscale structures of heavy rainfall system in the Yangtze River generated by Meiyu front

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2005年第8期48卷 1303-1311页

作者： LIU Liping1, RUAN Zheng1 & QIN Danyu2 1. Chinese Academy of Meteorological Sciences, Beijing 100081, China 2. nanjing institute of meteorology, nanjing 210044, China Chinese Academy of Meteorological Sciences Beijing China nanjing institute of meteorology Nanjing China

A heavy rainfall system was observed over the Yangtze River during Meiyu season by using dual-Doppler radar systems in the field experiment conducted by the project of National Fundamental Research Planning “Research on formation mechanism and the prediction theory of hazardous weather over China”. The three-dimensional mesoscale kinematic structure and process of a heavy rain on 22 and 23 July, 2002 are investigated by using the radial velocity and dual-Doppler radar technique. The results show that a southwest-northeast oriented rain band with the length of about 1000 km involves numbers of meso-β or meso-γ-scale convective cells with the size of 20―50 km. The heavy rain band in the middle reaches of the Yangtze River ex-ists in a low-level wind shear. The interaction between southwest low-level jet on the southern side of wind shear and east wind on the northern side formed the updraft. The wind disturbance, wind shear and convergence generate the convective action. The new cell developed in right rear flank of rain band and moved to the southwest wind area, where the vapor is abundant. This kind of echo can last a long time and developed well. The strong convective echoes are often ac-companied by the meso-γ-scale vortex and convergence.

关键词： heavy rainfall in Meiyu front, mesoscale structure, dual-Doppler radar, middle reaches of the Yangtze River, low-level jet.

Features of the sea-land breeze circulation and its precipitation along the South China coast

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 1988年第S1期 65-74页

作者： Zhu Qiangen and Zhou Jun The nanjing institute of meteorology, nanjing, China

-Based on the meteorological data from 37 weather stations in South China during May 1978, analysis has been made of the mean sea-land breeze circulation and its relation to the daily precipitation change along the coast of South China in *** is shown from the analysis that there is a noticeable sea-land breeze circulation at the height of 600-900 m along the coastal area, penetrating inland about 100 km. During the sea breeze period, the temperature gradient points to the sea and the pressure gradient to the inland with a convergence belt over the inland. And during the land breeze period, the reverse takes place to the temperature-pressure gradient with a convergence line found off the coast. These convergence belts correspond with the areas of torrential rain, creating diurnal changes in precipitation. The warm or cold advection induced by the sea-land breeze and the cloud cover caused by the convergence are found to have an abating effect on the sea-land breeze itself.

关键词： Features of the sea-land breeze circulation and its precipitation along the South China coast

Estimation of annual actual evapotranspiration from nonsaturated land surfaces with conventional meteorological data

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2004年第3期47卷 239-246页

作者： QIU Xinfa1, ZENG Yan2, MIAO Qilong1 & YU Qiang2 1. Department of Geography, nanjing institute of meteorology, nanjing 210044, China 2. institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Department of Geography Nanjing Institute of Meteorology Nanjing 210044 China Inst. of Geogr. Sci./Nat. Rsrc. Res. Chinese Academy of Sciences Beijing 100101 China

Views diverge greatly on the relationship between actual evapotranspiration (AE) and potential evapotranspiration (PE). Penman showed that AE is determined in intensity by PE and changes proportionally as a function of PE. In contrast, Bouchet indicated that AE deter-mines PE and varies inversely with PE. Based on nearly 30 years data from 432 weather stations and 512 hydrological stations in China, the two different theories, Penman抯 assumption and Bouchet抯 complementary relationship between AE and PE, were tested on nine river basins. With data integration technique, the complementary relationship between AE and PE was dis-played entirely. A general model to estimate the actual evapotranspiration from nonsaturated surfaces by routine meteorological observations has been established on the basis of thorough analysis of the concept of PE. The results show that the calculations are all in error control of <10%, except for a few years over the Yellow River Basin.

关键词： complementary relationship of evapotranspiration, potential evapotranspiration, actual evapotranspiration.

CAUSE，INDEX　AND　SPACE－TIME　ARRANGEMENT　OF　AGRICULTURAL　DROUGHT　AND　MEASURES　TO　PREVENT　AND　RESIST　DROUGHT

在线全文

学校读者我要写书评

暂无评论

Natural Disaster Reduction in China 1996年第1期 24-29页

作者： Feng Dingyuan and Qiu Xinfa(nanjing institute of meteorology)

ＣＡＵＳＥ，ＩＮＤＥＸＡＮＤＳＰＡＣＥ－ＴＩＭＥＡＲＲＡＮＧＥＭＥＮＴＯＦＡＧＲＩＣＵＬＴＵＲＡＬＤＲＯＵＧＨＴＡＮＤＭＥＡＳＵＲＥＳＴＯＰＲＥＶＥＮＴＡＮＤＲＥＳＩＳＴＤＲＯＵＧＨＴＦｅｎｇＤｉｎｇｙｕａｎａｎｄＱ... 详细信息

ＣＡＵＳＥ，ＩＮＤＥＸＡＮＤＳＰＡＣＥ－ＴＩＭＥＡＲＲＡＮＧＥＭＥＮＴＯＦＡＧＲＩＣＵＬＴＵＲＡＬＤＲＯＵＧＨＴＡＮＤＭＥＡＳＵＲＥＳＴＯＰＲＥＶＥＮＴＡＮＤＲＥＳＩＳＴＤＲＯＵＧＨＴＦｅｎｇＤｉｎｇｙｕａｎａｎｄＱｉｕＸｉｎｆａ（ＮａｎｊｉｎｇＩｎ...

关键词： SPACE

NEW WAVE-DEPENDENT FORMULAE FOR SEA SPRAY FLUX AT AIR-SEA INTERFACE

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2009年第4期21卷 573-581页

作者： SHI Jian ZHAO Dong-liang LI Xun-qiang ZHONG Zhong Key Laboratory of Coastal Disaster and Defense Ministry of Education Hohai University Nanjing 210098 China institute of meteorology PLA University of Science and Technology Nanjing 211101 China College of Physical and Environment Oceanography Ocean University of China Qingdao 266100 China

A bubble-derived Sea Spray Generation Function （SSGF） was deduced, which was integrated into the new wave-dependent SSGF. The effect of sea spray feedback was parameterized by the feedback coefficients A and B. The relationship of A（B） and the wind-sea Reynolds number was derived, which shows that the feedback effect of sea spray is decreasing with the wave developing. New sea spray flux formulae, including the new SSGF and new feedback coefficients, were proposed, which can reveal clearly the influence of wave state on sea spray fluxes. Spray fluxes in the Humidity Exchange Over the Sea （HEXOS） experiment were simulated again, and results show that spray momentum flux is small in this experiment, but spray heat flux is large. Comparisons of the sea spray fluxes calculated by two kinds of formulae in different wave states show that previous wave-independent spray flux formulae are the special cases of the presented new wave dependent formulae for sea spray flnx.

关键词： sea sray flux HEXOS wave state Sea Spray Generation Function (SSGF)

Zonal propagation of kinetic energy and convection in the South China Sea and Indian monsoon regions in boreal summer

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2004年第12期47卷 1076-1084页

作者： CHEN Longxun 1 ,GAO Hui 2 ,HE Jinhai 2 ,TAO Shiyan 3 & JIN Zuhui 3 1.Chinese Academy of Meteorological Sciences,Beijing 100081,China 2.nanjing institute of meteorology,nanjing 210044,China 3.institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China Chinese Academy of Meteorological Sciences Beijing China nanjing institute of meteorology Nanjing China Chinese Academy of Sciences Institute of Atmospheric Physics Beijing China

Zonal propagation of kinetic energy (KE) and convection in the South China Sea (SCS) and Indian summer monsoon areas are examined in present study. Results suggest that the SCS and Indian summer monsoon prevailed regions (5 —15°N) are dominated by the southwesterly wind, however, the disturbances of KE at 850 hPa and convection are observed mainly coming from the western Pacific Ocean (140—150°E), after passing through the SCS, and westward propagated into the Bay of Bengal (90—100°E). In the Indian summer monsoon domain, where the disturbances of KE are found mainly coming from the Arabian Sea (AS) and eastward propagated into the Bay of Bengal. Therefore, the SCS and the Indian summer mon- soon are quite different in zonal propagation of KE and convection. The SCS summer monsoon is mainly affected by the KE and convection coming from the tropical western Pacific. The Indian summer monsoon, however, can be partly influenced by the AS and the SCS summer monsoon. The analysis also suggests that the interaction region between the SCS and the Indian summer monsoon is around 90—95°E, rather than 105°E as proposed by earlier studies.

关键词： zonal propagation of KE and convection, East Asian monsoon, Indian monsoon.

Influence of interannual variability of Antarctic oscillation on mei-yu along the Yangtze and Huaihe River valley and its importance to prediction

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2003年第S2期48卷 61-67页

作者： 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 Chinese Acad Sci Inst Atmospher Phys Beijing 100029 Peoples R China nanjing Inst Meteorol Dept Atmospher Sci Nanjing 210044 Peoples R China

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.

关键词： Antarctic oscillation interannual variability mei-yu Antarctic sea ice.