CAJ | 학술논문

提利用广东省86个气象台站近52年（1962-2013年）逐日降水量资料，统计了逐年各台站及全省开汛期（rain season onset date/RSOD），并对广东省开汛特征及其与前汛期降水的关系进行了分析。分析结果表明：（1）广东省开汛期多集中在3月下旬至4月中旬，最早和最迟开汛期相差94 d；（2）广东省东南大部、北部大部较中部大部和西南部开汛早，雷州半岛开汛最迟；（3）广东省开汛可分为突发型开汛和渐进型开汛两种类型；（4）广东省开汛期年（代）际变化特征明显，存在15～16 a 的年代际振荡周期，1986年为年代振荡周期变化的转折点，前后分别存在8 a和5～6 a的年代振荡周期；（5）各台站开汛期与3月下旬及4月降水相关性最好，与5、6月及前汛期降水的相关性差；（6）广东开汛异常偏早（晚）年，其前冬500 hPa 高度场存在明显差异。
제이용광동성86개기상태참근52년（1962-2013년）축일강수량자료，통계료축년각태참급전성개신기（rain season onset date/RSOD），병대광동성개신특정급기여전신기강수적관계진행료분석。분석결과표명：（1）광동성개신기다집중재3월하순지4월중순，최조화최지개신기상차94 d；（2）광동성동남대부、북부대부교중부대부화서남부개신조，뇌주반도개신최지；（3）광동성개신가분위돌발형개신화점진형개신량충류형；（4）광동성개신기년（대）제변화특정명현，존재15～16 a 적년대제진탕주기，1986년위년대진탕주기변화적전절점，전후분별존재8 a화5～6 a적년대진탕주기；（5）각태참개신기여3월하순급4월강수상관성최호，여5、6월급전신기강수적상관성차；（6）엄동개신이상편조（만）년，기전동500 hPa 고도장존재명현차이。
Based on recent 52 years (1962-2013)daily precipitation data of 86 weather stations in Guang-dong,the annual rainy season onset dates (RSOD)of each station were counted,and the characteristics of the rainy season onset and its relationship with the first rainy season precipitation were analyzed.The re-sults indicate that:(1 )The RSOD is mainly concentrated in the last dekad of March to the mid dekad of April,and there is a 94 d gap between the earliest and the latest dates;(2)The rainy season begins earlier in southeast and north of Guangdong than in the southwestern part,and the latest in Leizhou Peninsula;(3)The rainy season begins in the two types of abrupt onset and gradual onset;(4)The RSOD has an in-ter-decadal oscillation period of 15-16 years,and respective inter-annual oscillation period of 8 years and 5-6 years pre and post 1986;(5)The RSOD has good correlations with late March and April precipitation but is poor with precipitation in May,June and the first rainy season;(6)The 500 hPa circulation differs greatly between the RSOD earlier years and the later years.