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社评“Welcome back. It's good to see you. Click below to log in to the rewards program at your property.”-梳理天下新闻

立冬≠入冬Welcome back. It's good to see you. Click below to log in to the rewards program at your property. 北京的冬天今年“迟到”了

来源: 千龙网
2024-11-08 14:59:41

最佳回答

“Welcome back. It's good to see you. Click below to log in to the rewards program at your property.”立冬≠入冬Welcome back. It's good to see you. Click below to log in to the rewards program at your property. 北京的冬天今年“迟到”了

  11月7Welcome back. It's good to see you. Click below to log in to the rewards program at your property.日是冬季第一个节气立冬,它的Welcome back. It's good to see you. Click below to log in to the rewards program at your property.到来意味着寒冷季节的开始。此时,冷空气活动更加频繁,进入一年中降温最猛的时段,入冬进程也开始加速,冬季前沿会抵达黄淮北部、秦岭、川西高原一带。

  常年立冬时节,我国北方大部已进入冬天,全国Welcome back. It's good to see you. Click below to log in to the rewards program at your property.型寒潮也会频繁出现,华北地区可能会迎来初雪。

  气象科普

  冬季起始并非简单以立冬节气为准绳

  立冬时节冷空气活动更加频繁,我国南北温差拉大,夏、秋、冬三季并存。除了已经入冬的西北、华北、东北地区等地,黄淮至江淮一带也会先后进入气象学意义上的冬天;江南等地秋意正浓,昼夜温差逐渐加大,早晚时段凉意明显;华南南部则是夏日未尽,暑气犹存。

  立冬到了,就算进入冬季了吗?在气象学上,冬季的起始并非简单地以立冬节气为准绳,而是依据连续五日滑动平均气温小于10℃的条件,并将这一气温序列中首个低于10℃的日期确定为入冬之日。根据这一标准,各地的入冬时间自然也是千差万别。

  以北京为例,基于1991年至2020年气象数据,北京常年入冬时间为10月31日。截至目前,北京气象部门还未“官宣”入冬,冬季已迟到。

  不过,随着冷空气一次次“来扰”,北京的气温正不断下降,昼夜温差较大。据市气象台预计,今日至周日北京天空云量增多,其中周六(11月9日)夜间还会有小雨或零星小雨,体感阴冷,外出注意添衣保暖,谨防感冒和心脑血管疾病的发生,加强健康防护。

  生活提示

  立冬是全年降温最猛的节气

  立冬是全年降温最猛的节气,全国型寒潮也会频繁出现,此时霜冻线将向南推进至江苏南部、安徽南部至湖北中部一线。据中国天气网介绍,立冬时节北方大部频繁受冷空气影响,寒意越发明显,入冬进程也明显加速,陕西南部、山东南部、河南大部、苏皖中北部都会陆续迈进冬天的门槛,建议公众提前准备帽子、围巾、羽绒服等御寒衣物,及时添衣保暖,以免感冒。

  除了降温,冷空气还会带来更加多样的降水,如雨、雪、雨夹雪、冰粒等。华北地区可能会在立冬时节出现初雪,东北地区和新疆北部、青海、甘肃等地需警惕强风雪影响。建议当地农牧民关注预报预警信息,提前做好设施农业、牲畜圈舍等的防风加固和防寒保暖工作。

  需要注意的是,在冷空气影响间歇期间,华北、黄淮等地昼夜温差大,湿度增加,易出现雾和霾天气。雾和霾会导致能见度下降、空气质量变差,严重时还可能引发交通事故,公众此时应减少户外活动,驾驶车辆需减速慢行、保持安全距离。

  天气预报

  周末华北等地气温将下降4℃至8℃

  中央气象台预计,11月7日至8日,受冷空气影响,新疆西部和中北部将有降水和大风降温天气,普遍有中到大雪或雨夹雪,塔城、阿勒泰、沿天山等地的部分地区有暴雪;低海拔地区有小到中雨;大部地区将有6℃至8℃降温,局地降温超过10℃,并将伴有5-6级大风,阵风7-8级,山口地区风力可达9-10级。

  11月9日至10日,冷空气逐渐东移影响西北地区东部、华北、东北等地。西北地区东部、华北、东北等地有4-6级大风,气温下降4℃至8℃,内蒙古东部局地降温超过10℃,内蒙古东北部、东北地区有小雨或雨夹雪或雪,局地中到大雪。

  建议上述地区及时调整着装,雨雪天气易造成道路湿滑、积雪或积冰,公众需注意出行安全。

  新京报记者 王景曦

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