气象研究与应用
氣象研究與應用
기상연구여응용
JOURNAL OF METEOROLOGICAL RESEARCH AND APPLICATION
2012年
1期
16-20
,共5页
江晓南%陈玉吉%朱艳萍%卢伟萍
江曉南%陳玉吉%硃豔萍%盧偉萍
강효남%진옥길%주염평%로위평
春播期%低温阴雨%时空分布%异常偏多%海温
春播期%低溫陰雨%時空分佈%異常偏多%海溫
춘파기%저온음우%시공분포%이상편다%해온
spring sowing period%cold and rainy weather%spatial and temporal distribution%anomalous abundant%sea surface temperature(SST)
选取1960~2010年福建春播期平均气温资料、日照资料、NCAR/NCEP逐日高度场、风场及逐月海温资料,使用统计方法分析近51a来福建省北部和南部低温阴雨日数的时空分布及异常偏多成因。结果表明:福建省低温阴雨日数的空间分布与福建省的地形及纬度密切相关。近51a来福建低温阴雨日数呈弱减少趋势,福建北部和南部地区年际变化特征相似。未来一段时间福建北部地区低温阴雨日数偏多可能性较大,南部地区低温阴雨日数可能继续偏少。福建低温阴雨日数与乌拉尔山脊强弱、亚洲高纬地区经向环流强弱关系密切。亚洲高纬地区的环流经向度偏强,冷空气不断南下和较强的西南风配合,湿度条件较好,是造成福建低温阴雨日数明显偏多的直接原因。福建北部地区低温阴雨异常偏多年前冬北太平洋(55°N~60°N,155°W~180°W)区域海温明显偏暖;福建南部地区低温阴雨异常偏多年前冬太平洋中东部海域海温明显偏暖。
選取1960~2010年福建春播期平均氣溫資料、日照資料、NCAR/NCEP逐日高度場、風場及逐月海溫資料,使用統計方法分析近51a來福建省北部和南部低溫陰雨日數的時空分佈及異常偏多成因。結果錶明:福建省低溫陰雨日數的空間分佈與福建省的地形及緯度密切相關。近51a來福建低溫陰雨日數呈弱減少趨勢,福建北部和南部地區年際變化特徵相似。未來一段時間福建北部地區低溫陰雨日數偏多可能性較大,南部地區低溫陰雨日數可能繼續偏少。福建低溫陰雨日數與烏拉爾山脊彊弱、亞洲高緯地區經嚮環流彊弱關繫密切。亞洲高緯地區的環流經嚮度偏彊,冷空氣不斷南下和較彊的西南風配閤,濕度條件較好,是造成福建低溫陰雨日數明顯偏多的直接原因。福建北部地區低溫陰雨異常偏多年前鼕北太平洋(55°N~60°N,155°W~180°W)區域海溫明顯偏暖;福建南部地區低溫陰雨異常偏多年前鼕太平洋中東部海域海溫明顯偏暖。
선취1960~2010년복건춘파기평균기온자료、일조자료、NCAR/NCEP축일고도장、풍장급축월해온자료,사용통계방법분석근51a래복건성북부화남부저온음우일수적시공분포급이상편다성인。결과표명:복건성저온음우일수적공간분포여복건성적지형급위도밀절상관。근51a래복건저온음우일수정약감소추세,복건북부화남부지구년제변화특정상사。미래일단시간복건북부지구저온음우일수편다가능성교대,남부지구저온음우일수가능계속편소。복건저온음우일수여오랍이산척강약、아주고위지구경향배류강약관계밀절。아주고위지구적배류경향도편강,랭공기불단남하화교강적서남풍배합,습도조건교호,시조성복건저온음우일수명현편다적직접원인。복건북부지구저온음우이상편다년전동북태평양(55°N~60°N,155°W~180°W)구역해온명현편난;복건남부지구저온음우이상편다년전동태평양중동부해역해온명현편난。
Basing the observational data of daily averaged temperatures,sunshine,and such NCEP/NCAR reanalysis data as monthly sea surface temperature(SST),daily geo-potential height and wind,from1960-2010 in Fujian province,using statistics method,the spatial and temporal distribution and the anomalous abundant causes of cold and rainy weather during spring sowing period(NDCRWS) in Northern and Southern Fujian were analyzed.The results show that the spatial distribution of the NDCRWS is closely related to the terrain and latitude of Fujian.The NDCRWS has a weak decreasing tendency in the past 51 years.The interannual variation of NDCRWS in the Northern Fujian is similar to that in the Southern Fujian.The NDCRWS in Northern(Southern)Fujian still has an increase(decrease)trend in coming years.The anomalous abundant of NDCRWS are directly caused by the strong meridional circulation in high latitude area of Asia,active cold air,southwesterly wind and abundant humidity.The SST in the North(central and eastern)Pacific during the preceding winter is obviously higher than normal while there are the anomalous abundant NDCRWS in the Northern(Southern)Fujian.