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(《北欧华人报》北欧国际新闻中心记者文礼西安报道)这段日子的西安,热浪裹挟全城,气温直冲四十摄氏度开外。烈日炙烤大地,户外仿佛巨大蒸笼,不少人只能闭门不出,依靠空调寻觅一丝清凉。放眼省内,景象却截然不同,陕北黄土高原接连迎来大雨浸润,甘霖滋养山野,一南一北,一边烈火蒸腾,一边雨水连绵,很多人心生疑惑,为何同属三秦大地,天气割裂得如同两个天地。

从气象规律来看,这般南北分化并非异象。眼下副热带高压稳稳盘踞关中上空,下沉气流压制云雨生成,如同一口巨大的锅盖扣在八百里秦川。西安身处关中盆地,群山环绕形成天然封闭地形,热量积聚难以向外疏散,叠加城市热岛效应,酷暑自然久久不散。而陕北地处高原,恰逢西风槽持续活动,源源不断的水汽在此汇聚抬升,造就连续降雨。一道无形的气流分界线横亘陕西中部,云雨止步黄土高原,难以翻越抵达关中,最终上演“北雨南热”的独特景象。

大家不必为持续高温心生焦躁,伏天酷热本就是北方盛夏固有的节律。寒暑轮回自有时序,高压系统不会永久停留,大气环流始终处于动态变化之中,持续的热浪终有退却之时。陕北的大雨滋养土地、涵养水源,长远来看同样能够调节区域大环境。酷暑当下,我们放平心态,做好防暑防护,减少午间外出,静等环流调整,风雨降温终会如期而至。

天地有常,四时有序,燥热只是阶段性的考验。熬过这段盛暑,清风与凉雨终将奔赴古城西安。放平心境安然度夏,心中存一份期待,便自有一缕清凉常驻心间。

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