CAJ | 학술논문

2013年12月大气环流主要特征是：极涡呈偶极性分布，中心气压均较常年平均偏低，欧亚中高纬环流呈两槽一脊型；南支槽较活跃，平均位置大致位于90°E 附近，副热带高压较常年同期偏强，位置偏西、偏北。12月，全国平均降水量为15．4 mm，较常年同期（10．5 mm）偏多46．7％；但地区差异较大，南方较常年同期偏多2～4成，淮河以北偏少，其中华北、黄淮等地几乎无降水。全国平均气温为-2．8℃，较常年同期（-3．2℃）偏高0．4℃；就区域来看，呈现“北暖南冷”的特征。月内，我国出现3次主要的冷空气过程和1次主要的降水过程。南方地区中旬出现一次大范围强降水和持续低温天气；中东部地区分别于上旬和下旬各出现一次雾霾天气。
2013년12월대기배류주요특정시：겁와정우겁성분포，중심기압균교상년평균편저，구아중고위배류정량조일척형；남지조교활약，평균위치대치위우90°E 부근，부열대고압교상년동기편강，위치편서、편북。12월，전국평균강수량위15．4 mm，교상년동기（10．5 mm）편다46．7％；단지구차이교대，남방교상년동기편다2～4성，회하이북편소，기중화북、황회등지궤호무강수。전국평균기온위-2．8℃，교상년동기（-3．2℃）편고0．4℃；취구역래간，정현“북난남랭”적특정。월내，아국출현3차주요적랭공기과정화1차주요적강수과정。남방지구중순출현일차대범위강강수화지속저온천기；중동부지구분별우상순화하순각출현일차무매천기。
The following are the main characteristics of the general circulation of atmosphere in December 2013:There are two polar vortex centers in the Northern Hemisphere with the weaker strength than nor-mal years.The circulation presents the trough-ridge-trough pattern in middle-high latitudes.The south branch trough behaves actively,and is located near 90°E averagely.The subtropical high is stronger than normal years.Besides,it is located more westward and northward than normal years.The monthly mean precipitation is 15.4 mm,46.7%more than normal (10.5 mm).In addition,significant difference is found in different areas:The precipitation in the major part of southern China is 20%-40% more than normal. The precipitation in the northern part to Huaihe River is less than normal,and especially,there is almost no any effective rainfall in the North of China and Huanghuai Region.The monthly mean temperature is-2.8℃,0.4℃ higher than normal (-3.2℃)which presents a regional characteristic,i.e.,the weather is warm in North China and cold in South China.There are three cold air processes nationwide and one ma-jor rainfall process in this month.There is a large-scale obvious rainfall event and persisting low tempera-ture weather in the southern China.Meanwhile,the fog and the haze appear in the central and eastern part of China.