冬季里 发表于 2024-11-3 08:20

今年是暖冬还是冷冬?最新研判→

<section data-role="outer" label="edit by 135editor"><section data-role="outer" label="edit by 135editor"><section><section class="js_underline_content
autoTypeSetting24psection"><section><section style="line-height: 1.75em;visibility: visible;"><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">近期,我国多地开启降温模式,大家在深秋感受到了冬的气息,纷纷讨论冷冬是否即将到来。</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">关于冷冬的热议,离不开“幕后推手”拉尼娜。</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">早在今年9月,</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">世界气象组织就预测拉尼娜准备在秋季“返场”。</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">许多人认为拉尼娜的出现,意味着冬天将变得更冷甚至带来超强寒潮,但拉尼娜与冷冬是否能完全画等号?</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">它对气候变化究竟有哪些影响?</span><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;">来看国家气候中心的分析。</span></section><section style="line-height: 1.75em;visibility: visible;"><span style="font-size: 18px;letter-spacing: 0.578px;visibility: visible;"><br/></span></section><section style="visibility: visible;"><section>//bbs.221700.com/plugin.php?id=wcn_editor:player&url=https%3A%2F%2Fmp.weixin.qq.com%2Fmp%2Freadtemplate%3Ft%3Dpages%2Fvideo_player_tmpl%26action%3Dmpvideo%26auto%3D0%26vid%3Dwxv_3706851337435398144&org=https%3A%2F%2Fmp.weixin.qq.com%2Fs%2FlkCJ3OBYHsHPQ5QSuJJ5Qw</section><section><br/></section></section><section style="line-height: 1.75em;"><span style="font-size: 18px;">拉尼娜是指赤道中东太平洋大范围海表温度持续异常偏低,也就是连续6个月较常年偏低0.5℃的现象,它的出现常伴有热带大气环流的变化,例如风、气压和降水量的变化。与厄尔尼诺现象相反,拉尼娜对全球气候有相对短暂的降温效应。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><p style="text-align: center;"></p><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;">据统计,1951年至今发生了15次拉尼娜事件,1986年以前拉尼娜事件的当年,我国冬季均为冷冬,但在全球变暖的背景下,1986年以后拉尼娜事件当年,出现暖冬的频率增加。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><p style="text-align: center;"></p><section style="line-height: 1.75em;"><strong><span style="font-size: 18px;">拉尼娜其实并不意味着冷冬。</span></strong><span style="font-size: 18px;"><strong>我国冬季究竟是偏冷还是偏暖,与东亚冬季风强度密切相关,北极海冰、欧亚积雪等也起到重要作用</strong><strong>。</strong>不过从统计数据来看,出现拉尼娜以后,我国冬季偏冷的概率更大一些。由于今年的拉尼娜可能是一个较弱的事件,它会在多大程度上影响这个冬季的气温,还有待观察。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;">就发生频率而言,厄尔尼诺发生不规律,大约每两到七年发生一次,通常在一年内迅速成熟并衰减。拉尼娜的强度通常比厄尔尼诺弱,但持续时间更长,通常能达到约9—12个月,有些甚至能持续两年以上,也就是所谓的多年期。2020年到2023年就发生了21世纪首次“三重”拉尼娜事件。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><section data-tools="135编辑器" data-id="145054"><section style="margin: 10px auto;display: flex;justify-content: center;"><section><section style="width: 35px;margin-left: auto;margin-bottom: -24px;"><br/></section><section><section style="margin-right: 10px;margin-left: 6px;"><section style="background-color: rgb(36, 97, 154);padding: 5px 20px;"><section style="font-size: 16px;text-align: center;color: #ffffff;"><span style="font-size: 18px;"><strong data-brushtype="text">国家气候中心预测</strong></span></section></section><section style="width: 0px;height: 1px;border-right: 12px solid rgb(36, 97, 154);border-bottom: 7px solid transparent;margin-left: 14%;"><br/></section></section></section></section></section></section><ul data-source="cke" class=" list-paddingleft-2"><li><p style="line-height: 1.75em;margin-bottom: 24px;"><strong>未来拉尼娜连续发生的频率可能增加</strong></p></li></ul><section style="line-height: 1.75em;"><span style="font-size: 18px;">从全球范围来看,拉尼娜不算是大概率事件。在过去100年里,全球共发生了20次拉尼娜事件,其中10次为一年事件,10次为多年事件。但值得注意的是,多年期拉尼娜事件的确发生得越来越频繁了:自21世纪初以来,全球已发生5次多年期拉尼娜事件。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><p style="text-align: center;"></p><section style="line-height: 1.75em;"><span style="font-size: 18px;">多年期拉尼娜事件由于对应着更强的海温异常,往往会对全球气候、环境及经济社会带来持续性和叠加性的破坏影响,并显著提高极端天气灾害的发生风险。这些观测事实揭示了目前多年期拉尼娜事件的加速趋势。</span></section><section style="line-height: 1.75em;"><span style="font-size: 18px;"><br/></span></section><ul data-source="cke" class=" list-paddingleft-2"><li><p style="line-height: 1.75em;margin-bottom: 24px;"><strong>今冬易出现阶段性强降温、强降雪</strong></p></li></ul><p style="text-align: center;"></p><section style="line-height: 1.75em;"><strong><span style="font-size: 18px;">国家气候中心预测,今年秋冬季我国较易出现阶段性强降温、强降雪天气。</span></strong><span style="font-size: 18px;"></span></section><ul class=" list-paddingleft-2"><li><p style="line-height: 1.75em;margin-bottom: 24px;"><span style="font-size: 18px;">建议农业农村部门加强对设施农业和畜牧业冻害、雪灾和大风灾害的防范;</span></p></li><li><p style="line-height: 1.75em;margin-bottom: 24px;"><span style="font-size: 18px;">交通部门做好低温强降雪大风灾害风险预案;</span></p></li><li><p style="line-height: 1.75em;margin-bottom: 24px;"><span style="font-size: 18px;">相关地区和部门根据灾害监测预警信息及时做好设备除冰、道路除雪等维护、维修工作。</span></p></li></ul></section></section></section></section><section data-role="outer" label="edit by 135editor"><section data-role="paragraph"><section data-role="outer" label="edit by 135editor"><section style="text-align: center;line-height: 2em;"><span style="font-size: 15px;letter-spacing: 2px;"></span></section><section><span style="font-size: 16px;"></span></section><section style="font-size: 15px;color: rgb(0, 0, 0);line-height: 2;"><section style="line-height: 2;"><section><section style="color: rgb(109, 109, 109);line-height: 2;height: 0px;overflow: hidden;"><br/></section></section></section></section></section></section></section><section label="edit by 135editor"><section><section style="margin-right: 8px;margin-left: 8px;outline: 0px;letter-spacing: 0.544px;color: rgb(34, 34, 34);visibility: visible;"><strong style="outline: 0px;letter-spacing: 0.544px;color: rgb(51, 51, 51);text-indent: 0em;text-align: center;font-size: 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等会给你拿 发表于 2024-11-3 14:52

什么专家预测,不如我的直觉感受。我的结论今年一定是暖冬。

我的秋天 发表于 2024-11-3 13:19

冷又如何
暖又如何
还不是的过

蓝泊湾 发表于 2024-11-3 12:59

保持同样的温度。

君临天下 发表于 2024-11-3 09:06

论理冬天应该冷才是符合常理,要是暖冬就不正常了。
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