气象科技专业英语专业英语第二课 锋生和锋的特征知识介绍.pptVIP

Unit Two: Frontogenesis and frontal characteristics;New words:;Interface 交界面，接口 Interaction internet interannual (年际的） Numerical 数值的 Model 模式 Baroclinic 斜压的 barotropic 正压的 Cyclone 气旋 anticyclone 反气旋 cyclogenesis——气旋生成 Depression 低压 isobaric 等压的 isothermal 等温的 Iso+..等。。 Synoptic 天气的 Principle of Synoptic Meteorology 天气学原理 ;Convergence 辐合 divergence 辐散 Apex 顶点，峰尖 peak 峰 Zone 区域 region Cirrus 卷云 jet 急流 Low level jet 低空急流 Geostrophic 地转的 Convection 对流 convective 对流的 Greenhouse 温室效应 albedo 反照率 Evaporate 蒸发v. Evaporation 蒸发n. Occlusion 锢囚 squall 飑 Oceanic 海洋的 lee 背风面 Cyclogenesis 气旋生成 Trough 槽 ridge 脊 ;Ana-front 上滑锋 kata-front下滑锋 Slope 坡度 order 量级 Multi-layered 多层的 Multi-cell 多单体的 Cirrostratus 卷层云 altostratus 高层云 Nimbostratus 雨层云 stratocumulus 层积云 Drizzle 毛毛雨 precipitation 降水 Rainfall 降水量 saturate 使饱和 Descend 下降 ascend 上升 Medium-level 中层 high-level Low-level 低层 mid-tropospheric 对流层中部的 Airflow 气流 Large-scale 大尺度的 meso-scale 中尺度的 momentum 动量 ;;;;;;;;;;;;;Tibet Plateau;;;P1: ①The first real advance in our detailed understanding of mid-latitude weather variations was made with the discover that many of the day-to-day changes are associated with the formation and movement of boundaries, or fronts, between different air masses. ②Observations of the temperature, wind directions, humidity and other physical phenomena during unsettled periods showed that discontinuities often persist between impinging air masses of differing characteristics. ③The term “front”, for these surfaces of airmass conflict, was a logical one proposed during the First World War by a group of meteorologists working in Norway, and their ideas are still an integral part of most weather analysis and forecasting particularly in middle and high latitudes. ;1.???? Frontal waves P2: ① It was observed that the typical geometry of the air mass interface, or front, resembles a wave form. ② Similar wave patterns are