CAJ | 학술논문

利用河北省21个气象台站52 a （1960～2011年）的降水资料，采用空间插值技术、经验正交函数分解方法（ EOF）和小波分析方法，对河北省夏季降水时空变化特征进行了分析。结果表明：河北省夏季降水呈现南多北少的特征，地形差异呈现出沿海多、平原少，山地迎风坡多、背风坡少的特征；利用EOF分析降水场的时空分布特征发现，前2个特征向量（模态累积方差贡献率分别为66.85％和73.36％）基本揭示了河北省降水空间分布的2种典型模式---全局型和东西型，其中东西反向降水分布模式的零线与燕山-太行山的地形轮廓较吻合，表明东西差异可能受地形影响；通过小波分析可以看出，1960～2011年河北省夏季降水序列小波方差的主要峰值分别出现在尺度a为1，5，9，14处，准14 a年代周期振荡信号较强。
이용하북성21개기상태참52 a （1960～2011년）적강수자료，채용공간삽치기술、경험정교함수분해방법（ EOF）화소파분석방법，대하북성하계강수시공변화특정진행료분석。결과표명：하북성하계강수정현남다북소적특정，지형차이정현출연해다、평원소，산지영풍파다、배풍파소적특정；이용EOF분석강수장적시공분포특정발현，전2개특정향량（모태루적방차공헌솔분별위66.85％화73.36％）기본게시료하북성강수공간분포적2충전형모식---전국형화동서형，기중동서반향강수분포모식적령선여연산-태행산적지형륜곽교문합，표명동서차이가능수지형영향；통과소파분석가이간출，1960～2011년하북성하계강수서렬소파방차적주요봉치분별출현재척도a위1，5，9，14처，준14 a년대주기진탕신호교강。
Using the precipitation data of 21 meteorological stations from 1960 to 2011 in Hebei Province , the spatial-temporal distribution features of summer precipitation in Hebei Province was analyzed with the methods of spatial interpolation technique , EOF and wavelet analysis.The results showed that the summer precipitation in southern, coastal and windward slope of the mountain were more, which in northern, plains and leeward side were less.With EOF analysis of the temporal and spatial distribution of precipitation fields, it indicated that there were two basic feature vectors ( modal accumulated variance contribution rates were 66.85% and 73.36%, respectively ) reveal the typical pattern of the spatial distribution of precipitation in Hebei Province , the global type things, things inverting rainfall distribution pattern, the zero line of Yanshan-Taihang terrain contours agree well, indicating that the east-west differences may be influenced by terrain.With the wavelet analysis, the precipitation sequence wavelet variance peaks from 1960 to 2011 in Hebei Province could be seen in scales of a were 1, 5, 9 and 14.The era of quasi-14 a cycle oscillation signal was stronger.