偏北风天气更易产生静电吗|国产69久久久欧美黑人A片

  在寒冷干燥的冬季,特别是北方地区,脱衣服时总能听到“噼里啪啦”的声响;见面握手时,刚一接触对方指尖会突然感到针刺般疼痛;早上起来梳头时,头发却“飘了起来”……这些都是静电在作祟。近段时间,我国大部地区雨雪稀少、天气干燥,多地静电活跃。静电究竟是怎样产生的?有说法称偏北风天气容易产生静电,这是真的吗?

  气象监测显示,近一个月以来,我国较少出现大范围雨雪天气过程,中东部多地降水较常年同期明显偏少,尤其是辽宁、河北、山东、广东等地部分地区降水量偏少超80%。

  天干物燥易起静电。中国天气网气象分析师周丽贤解释,由于在冬季,寒冷天气导致空气中水分含量减少,空气湿度迅速降低,当环境湿度小于30%的情况下,空气中的水汽难以传导电荷,原本容易消散的静电会大量停留在物体或人体表面,导致门把手、楼梯扶手、毛衣、头发等地方带电。

  周丽贤表示,冬季影响我国的冷空气活动频繁,由于缺少水汽的配合,冷空气活动以大风降温为主,天气干燥、雨雪不多。整体来看,北方大部地区以干燥天气格局为主,静电指数较高,京津冀等省份均处于静电活跃区域。南方地区整体湿度较北方偏高,但仍比较干燥,不少地方湿度低于30%,导致静电风险相对较高。

  大风天气尤其是偏北风,也是滋生静电的“温床”。由于偏北风往往来自内陆地区或高纬度地区,这些地区通常降水量较少,空气相对干燥。当偏北风吹拂时,会把内陆的干燥空气向南延伸,从而导致受大风影响的地区变得更为干燥。

  那么,干燥季节如何防“电”?周丽贤建议,一是做好环境增湿。冬天天气干燥,加上北方供暖,空气湿度降低易导致电荷难以传导,静电大量停留,在室内可开启加湿器,尽量让环境湿度保持在40%至60%之间。二是秋冬季内搭尽量选用棉质衣物。化纤材质的衣服本身摩擦易起静电,且电阻高导致静电难释放。三是做好皮肤保湿工作。尽量让角质层含水量保持在10%至20%之间,可有效传导电荷,促使静电消散。四是使用有效“放电”法。可用摸墙放电法,将静电电荷通过墙体导入地面。此外,还可用金属小物件给可能带电的物品放电,降低触碰风险。

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