variance n. 1.变化,变动,变更;变度,变量;【统计】(平)方(偏)差。 2.(意见等的)相异;不和,冲突,争论。 3.【法律】诉状和供词的不符。 at variance with 和…不和;和…不符 (at variance with the facts 不符事实。His conduct is at variance with his words. 他言行不符)。 set at variance 使不睦,离间。
map MAP =Military Aid Program 〔美国〕军事援助计划。 n. 1.地图;天体图;图。 2.〔美俚〕脸,面孔。 3.〔美俚〕(染色体上基因排列的)遗传图。 off the map 〔口语〕不重要的;消失的;过时的;陈腐的。 on the map 〔口语〕存在的;重要的;有名的,占显著地位的,起主要作用的。 put oneself on the map 发生,发现;使自己出名,出人头地。 put sb. [sth.] on the map 使某人[某事]出名。 wipe off the map 把…消灭掉。 vt. 1. 测绘,为…绘制地图;勘测,制订。 2.〔美俚〕测定(染色体中基因的)位置。 map out 规划,安排。
By using ncep / ncar reanalysis data of height and wind, the inter-monthly lpac map, the climate lapc map, inter-annual anomaly map and mean variance map of monthly wind field of 850 and 500hpa and monthly height field of 850, 500, 150, 30hpa are calculated in a globe-belt area, which situates between 30 s and 75 n, from december 1957 to december 1997, according them we analysis the rule of the season transfer and anomaly of nh mean circulation . the results show that the climate map of lapc can describe the seasonal transfer process of large scale circulation better . the advance process of summer circulation establish is form south to north at the middle and lower level of the troposphere, that is reflected primly in the inter-monthly wind and pressure map of lapc; at lower lever of stratosphere, the establish process is simulate to that of troposphere, and reflect of process of that the south asia high toward plateau; at middle stratosphere the summer circulation establish begins at middle and high latitude initially, and then transmits to low latitude gradually, while the seasonal variability in mid-stratosphere is stronger than it in troposphere and low-stratosphere 利用ncepncar再分析高度场和风场资料,计算了30s75n球带区域1957年12月至1997年12月逐月850、500hpa风场及850、500、150、30hpa高度场月际局地型相似系数图、多年平均图(即气候lpac图)、年际异常图及均方差图,在此基础上,分析了北半球平均环流季节转换及其异常的规律。分析表明,气候局地型相似系数图较好地给出了大尺度环流季节转换发生的过程:在对流层中、下部,风、压场月际局地型相似系数图清楚地反映了夏季型环流建立由南向北的推进过程;低平流层夏季型环流的建立与对流层接近,其中,南亚高压上高原过程有明显反映:中平流层,夏季型环流的建立明显表现为从中、高纬度开始,逐步向低纬传播的特征,且变化较对流层和低平流层明显。