海拔高低与温度,气压的关系是什么

2024-12-16 23:03:04
推荐回答(4个)
回答1:

气压与纬度的关系:

由于太阳辐射对各纬度加热不均,全球近地面形成七个气压带。由于地球表面纬度高低不同,接受太阳辐射的多少不同,于是形成不同的气压区域,着些区域就是气压带。

赤道附近受太阳辐射热量多,温度高。空气受热膨胀上升,形成赤道低气压带.同理可推知。地球有副热带高气压带,副极地低气压带和极地高气压带。气压带可随太阳直射点位置的变化而南北平移。

气压与海拔的关系:

负相关,海拔越高,气压越低,海拔越低,气压越高。大致每提高12m,大气压下降1mmHg(1毫升水银柱)或者每上升9m,大气压降低100Pa。

气压与温度之间的关系:

在开放的环境下,温度越高气压越低。在密闭环境下(体积不变),温度越高气压越高。

扩展资料:

大气压的年变化:

气压随着大气高度而变化,这是因为空气本身是具有重量的,而地球对物质又具有引力作用,且中心距离越近,引力也越大。

所以大气愈接近场面愈密集,愈向高空愈稀薄,气压也随着气温的变化而变化,这是因为气体具有热胀冷缩作用,气温低,气体收缩,密度增加,气压增大,相反,气温高,气体膨胀,密度减小,所以气压也减小。

通常情况下,地面不断地向大气中进行长波有效辐射,同时大气也在不断地向地面进行逆辐射。晴天,地面的热量可以较为通畅地通过有效辐射和对流气层的向上辐散运动向外输运。阴天时,云层减少了对流层大气向外的辐散运动。

云层这种保存地表和对液层热量的作用称为“温室效应”。这样,阴天地区的大气膨胀就比较厉害,从而导致阴天地区的大气横向向外扩散,使空气的密度减小,同时阴天地区大气的湿度比较大,也使大气的密度减小。

因这两个因素的影响,从而导致阴天的大气压比晴天的大气压低。 同一地区,在一年之中的不同时间其大气压的值也有所不同。这叫大气压的年变化。

参考资料来源:百度百科-气压

回答2:

海拔与温度的关系很简单,我就不说了啦。
假设你在学高中地理吧,因为温度与气压的关系也郁闷了很多人了的。
简言之,在地理学中,温度与气压没有直接的关系。
千万不要受热力环流图的影响,就认为气温高就形会低气压,气温低就会形成高气压,气压的高低只有在同一海拔平面比较才是有意义的。例:每年影响我国的副热带高气压带就是典型的热高压。而是要具体图具体分析。
注:在地理题目中,一般的气图都是温度高气压就较低,形成低压中心。

回答3:

1、海拔越高,气温越低,气压也越低。
2、大约海拔每升高100米,气温下降0.6℃。
3、在3000M范围内,每升高12M,大气压减小1mmHg,大约133Pa!

回答4:

一般情况下,海拔越高,温度和气压都降低

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