CAJ | 학술논문

应用Micaps3天气图资料、卫星云图，对许昌市2014年2月16—18日雨转雪天气过程进行诊断分析，对环流形势、水汽条件、动力、热力特征的分析结果表明：①前期主要是500 hPa高空槽和700 hPa切变线影响的稳定性降水，后期是850 hPa回流冷空气不断补充堆积形成深厚的冷垫，低层偏东气流与中高层槽前的西南暖湿急流交汇形成回流降水形势.高低空的有力配合，冷暖空气的交汇为降水提供了较好的动力条件.冷空气侵入时段、气温下降速度、降水时间，都是初春降水性质发生改变的关键点.②这次雨转雪天气过程对越冬作物小麦生长特别有利，可以冻死土地中的害虫和虫卵，大大降低来年麦蜘蛛、吸浆虫，蚜虫等病虫害的发生几率，也对冬小麦纹枯病，赤霉病的滋生和蔓延起到抑制作用，使小麦越冬基数减小，提高了2014年冬小麦的产量.
응용Micaps3천기도자료、위성운도，대허창시2014년2월16—18일우전설천기과정진행진단분석，대배류형세、수기조건、동력、열력특정적분석결과표명：①전기주요시500 hPa고공조화700 hPa절변선영향적은정성강수，후기시850 hPa회류랭공기불단보충퇴적형성심후적랭점，저층편동기류여중고층조전적서남난습급류교회형성회류강수형세.고저공적유력배합，랭난공기적교회위강수제공료교호적동력조건.랭공기침입시단、기온하강속도、강수시간，도시초춘강수성질발생개변적관건점.②저차우전설천기과정대월동작물소맥생장특별유리，가이동사토지중적해충화충란，대대강저래년맥지주、흡장충，아충등병충해적발생궤솔，야대동소맥문고병，적매병적자생화만연기도억제작용，사소맥월동기수감소，제고료2014년동소맥적산량.
In this paper,Micaps3 weather map data,satellite images of Xuchang City in February 16-18,2014, the rain turning snow weather process diagnostic analysis of circulation patterns,water vapor,power,thermal characteristics was carried out. The results showed as follows.①In the early stage,500 hPa upper trough and 700 hPa mainly affect the stability of the shear line precipitation,while in the later stage,850 hPa reflow cold air is constantly replenished and stacked to form a deep cold pad,southwest of warm low-level easterly winds and the jet stream intersected and formed the high-level trough reflux precipitation situation. High and low altitude with a strong,cold air intersection provides better dynamic conditions for precipitation. The cold air invasion period ,the temperature dropped speed,precipitation time are the key points of the change in precipitation in early spring.②The process for the rain to snow weather winter wheat crop grown is particularly advantageous ,which can help kill pest and its eggs in the land. It can also reduce the bad effects of wheat spider midge,aphids and other pests greatly,which is good for restraining the occurrence of gibberellic disease and banded sclerotial blight. In this way , the yield of winter wheat in 2014 is improved.