中央气象台首(shǒu )席预报员 方翀:在春季(jì )就是(shì )说(shuō )出(chū )现这种(zhǒng )忽冷忽热的天气现象的话,应(yīng )该来(lái )说(shuō )还(hái )是(shì )比(bǐ )较(jiào )常(cháng )见的。在冬(dōng )天(tiān )的(de )话(huà ),我国大部(bù )地(dì )区(qū )都(dōu )是受(shòu )到(dào )这种(zhǒng )冷高压,或者说这种冷(lěng )气团的这么一(yī )个控(kòng )制或(huò )者影响,暖气(qì )团(tuán )相(xiàng )对来说势(shì )力比较(jiào )弱小,这样的话冷暖(nuǎn )气流(liú )交汇并不(bú )是很强,相对来(lái )说(shuō )气(qì )温幅度变(biàn )化并不是太(tài )大(dà )。春(chūn )季(jì )正(zhèng )处于(yú )这么(me )一(yī )个冷气团和暖气(qì )团此消彼长的季节。当冷气团势力积聚到一定程度,并(bìng )且(qiě )大(dà )举南下的(de )时(shí )候(hòu ),这(zhè )个气(qì )温(wēn )就(jiù )会大(dà )幅(fú )度(dù )下降。但是当它势力衰弱,而暖气团开始加(jiā )强的时候(hòu ),气温(wēn )又会(huì )大幅度上升,所(suǒ )以就出现了这种(zhǒng )忽冷忽热的现(xiàn )象(xiàng )。
Copyright © 2008-2018