This paper use the ncep / ncar day - to - day reanalysis data of 500hpa high field and so on , choose ural mountain , baikal , okhotsk as the key district , the mid - high latitude of eurasia circulation courses that have long duration ( scale of time is middle , namely during 10 - 30 day ) , maybe continue continuously after being intermittence of 1 - 2 days in middle , appear repeatedly is for research object , define an index " i " of the circulation pattern over mid - high latitude of eurasia . a method is proposed to identify the summer typical persistent circulation pattern at 500hpa levels over eurasia mid - high latitude . the climate characteristics of those typical persistent circulation patterns are studied 本文利用ncep / ncar再分析逐日500hpa高度场等资料,选择乌拉尔山、贝加尔湖、鄂霍次克海这三个地方作为关键区,以夏季欧亚中高纬度持续时间长(时间尺度属于中间时间尺度,即10 ? 30天之间) 、中间可能会间歇1 、 2天然后又继续持续、反复出现的环流过程为研究对象,定义了一个夏季欧亚中高纬流型指数,在此基础上提出了一种对夏季欧亚中高纬500hpa典型持续流型的界定方法,研究了典型持续流型的气候特征,分析了流型指数的年代际变化,以及对应不同阶段、不同流型的降水场、加热场、海温场等的主要特征。
A complex mixed - phase explicit microphysical parameterization scheme , which also be known as reisner 2 explicit scheme was developed for use in the ncar / penn state mesoscale model versions ( mm5 ) . the single - moment schemes has additional variables for graupel and ice number concentration , in which the mixing ratio of cloud water , rain water , cloud ice , snow and graupel are predicted and number concentration specified Mm5中的reisner2方案是一种含霰的复杂混合相显式云物理方案,该方案包含了云水、雨水、冰晶、雪和霰的混合比预报方程,同时对冰晶的数浓度作了预报。
Based on ncep / ncar reanalysis sst and wind data set and fsu wind stress data , the dynamical roles of atmosphere over the tropical pacific on ocean are diagnostically analyzed . by using a dynamical ocean model over tropical pacific , the importance of dynamical roles of different areas atmosphere on ocean is studied . in the part iii of this work , a intermediate coupled model ( icm ) is employed to study ssta forecast experiment 本文用ncep / ncar再分析海表温度、风应力和风场资料就热带太平洋地区大气对海洋的强迫进行诊断分析,并用一个热带太平洋动力海洋模式研究不同区域大气对海洋强迫作用的重要性,在此基础上用一个中等复杂程度的耦合模式对enso事件进行预报试验。
Using ncep / ncar 40 - year reanalysis , gisst2 . 3b data - set , cru south oscillation index along with in situ the 160 station data of surface air temperature / rainfall records in china , the inter - decadal variations in the relationship between equatorial western and eastern pacific variabilities are examined . the possible relations to the surface air temperature / rainfall in china are also investigated 利用ncep / ncar再分析资料、全球海温海冰gisst2 . 3b资料、英国cru提供的南方涛动指数以及中国160站降水和气温资料,分析了热带太平洋地区海气系统内部联系的年代际变化特征及其与中国降水/气温异常的联系。
By using ncep / ncar reanalysis data of monthly mean geopotential height of 500hpa , monthly mslp , monthly mean surface temperature and monthly mean temperature in heilongjiang province , temperature variability of different time scale , simultaneous & previous general circulation is studied with method of diagnostic analyzing of extreme cold or warm in heilongjiang province , and predictive relationship has been developed by using method of screening regression and ssa - mem as well 本文采用ncep ncar再分析500hpa高度、海平面气压、地面温度资料和黑龙江月平均温度资料,利用诊断分析方法研究了黑龙江月平均温度的不同时间尺度变率,异常暖、冷的同期和前期环流特征,并进行了逐步回归和ssa - mem方法预报试验。
Using 925hpa ncep / ncar reanalysis wind data to replace fsu wind data improves initialization impact wind field of zebiak - cane ocean - atmosphere coupled model ( hereafter referred to as zc coupled model ) . subsequently , 1997 / 1998 el nino is analyzed on the base of simulated and observed data , and a new possible mechanism for the evolution of the 1997 / 1998 el nino is advanced . then genesis mechanism for enso is perfected further 本文利用925hpancep ncar再分析风场资料替代fsu风场资料对zebiak ? cane海气耦合模式(简称zc耦合模式)的初始强迫风场进行了改进,结合模拟资料与观测资料对1997 1998elnino事件进行了诊断分析,提出了1997 1998elnino发生、发展的一种新的可能机制,进而对elnino成因机制进行了进一步完善,最后尝试对改进初始强迫风场后的zc耦合模式的大气模式中的潜热加热计算的参数化方案进行了改进。
The features of interannual relationships and the decadal variabilities of interannual relationships between summer 850hpa cross equator flows of eastern hemisphere and enso and china summer rainfall are analyzed by using ncep / ncar reanalysis data , sea surface temperatures data of hadley center and rainfall data of 160 stations of china 利用1948 2002年ncep ncar再分析风场、高度场和海温资料, 1951 2000年中国160站降水资料,分析了东半球夏季低空各支越赤道气流与enso循环及中国夏季降水的关系及其年代际变化。
Based on the global land monthly rain data ( prec / l ) created by chen et al ( 2001 ) , ncep / ncar reanalyzed monthly mean wind data and global monthly sst grid data edited by british meteorological bureau , this paper investigates some problems of the climate change of global land rainfall for june - august ( jja ) during 1948 - 2001 本文采用chen等( 2001 )最新创建的全球陆地月降水资料( prec / l ) 、美国ncep ncar再分析月平均风场资料和英国气象局整编的全球逐月海温格点资料,分析了1948 - 2001年全球陆地6 - 8月降水场气候变化的若干问题。