{"id":54107,"date":"2020-12-28T09:40:54","date_gmt":"2020-12-28T09:40:54","guid":{"rendered":"http:\/\/www.climatemonitor.it\/?p=54107"},"modified":"2020-12-28T09:40:54","modified_gmt":"2020-12-28T09:40:54","slug":"la-nevicata-del-28-dicembre-2020-milano-alcuni-raffronti-climatologici","status":"publish","type":"post","link":"https:\/\/www.climatemonitor.it\/?p=54107","title":{"rendered":"La nevicata del 28 dicembre 2020 a Milano &#8211; Alcuni raffronti climatologici"},"content":{"rendered":"<p>Le nevicate su Milano sono fenomeni per me sempre interessati da osservare, soprattutto perch\u00e9 trasfigurano completamente la citt\u00e0, che di norma mi pare pi\u00f9 simile a un gigantesco parcheggio che alla metropoli con vie ampie e spaziose che ci hanno lasciato i nostri padri.<\/p>\n<figure id=\"attachment_54110\" aria-describedby=\"caption-attachment-54110\" style=\"width: 210px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-54110\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/20201228_062045-neve-Milano-28-dicembre-2020-e1609148177414.jpg\" alt=\"\" width=\"210\" height=\"373\" \/><figcaption id=\"caption-attachment-54110\" class=\"wp-caption-text\">Foto 3 \u2013 Via Modigliani innevata (28\/12 ore 6)<\/figcaption><\/figure>\n<p>La nevicata in corso \u00e8 iniziata nella notte scorsa e sta proseguendo abbondante al momento in cui scrivo queste note e, alle 5,30 di questa mattina ho misurato al suolo fra 7 e 9 cm di neve (\u201cal suolo\u201d sta qui per \u201csui tettucci delle auto\u201d, che \u00e8 il modo per me pi\u00f9 sensato di misurare la neve a Milano).<\/p>\n<p>Per contestualizzare a livello storico il fenomeno allego il diagramma in figura 1 in cui riporto l\u2019altezza della neve al suolo registrata a Milano dal sottoscritto dal 1991 ad oggi, con dati per l\u2019appunto aggiornati alle ore 5,30 di questa mattina.<\/p>\n<p>Dal diagramma emerge che di fronte a un fenomeno tanto irregolare nel tempo \u00e8 poco interessante utilizzare un trend lineare, che infatti mi sono ben guardato dall&#8217;aggiungere al diagramma. L\u2019unica cosa sensata che si pu\u00f2 a mio avviso fare \u00e8 delineare i tre seguenti sotto periodi:<\/p>\n<ul>\n<li>1991-2004, a nevosit\u00e0 ridotta (media di 4,3 cm\/anno con 7 anni del tutto privi di neve)<\/li>\n<li>2005-2012 con maggiore nevosit\u00e0 (media di 19,6 cm\/anno con 2 anni del tutto privi di neve)<\/li>\n<li>2013-2020 con scarsa nevosit\u00e0 (media di 5,4 cm con 1 anno del tutto privo di neve).<\/li>\n<\/ul>\n<p>Ovviamente la memoria va anche alle grandi nevicate del XX\u00b0 secolo, che ho riassunto nella tabella 1, fra cui spicca in assoluto quella del gennaio 1985 che distrusse il bellissimo palazzetto dello sport di recente costruzione, a perenne monito per coloro i quali ignorano l\u2019importanza dei carichi da neve sui manufatti.<\/p>\n<p>Non vale la pena infine di commentare le tante profezie di scomparsa delle neve in pianura padana, su cui stenderei un velo pietoso (di neve, ovviamente).<\/p>\n<figure id=\"attachment_54108\" aria-describedby=\"caption-attachment-54108\" style=\"width: 914px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-54108\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Figura-1-Neve-Milano-1991-2020.png\" alt=\"\" width=\"914\" height=\"478\" srcset=\"https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Figura-1-Neve-Milano-1991-2020.png 914w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Figura-1-Neve-Milano-1991-2020-300x157.png 300w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Figura-1-Neve-Milano-1991-2020-768x402.png 768w\" sizes=\"auto, (max-width: 914px) 100vw, 914px\" \/><figcaption id=\"caption-attachment-54108\" class=\"wp-caption-text\">Figura 1 \u2013 Altezza della neve a Milano dal gennaio 1991 al 28 dicembre 2020 (ore 5,30).<\/figcaption><\/figure>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-54113\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Tab_1.png\" alt=\"\" width=\"965\" height=\"684\" srcset=\"https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Tab_1.png 965w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Tab_1-300x213.png 300w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/Tab_1-768x544.png 768w\" sizes=\"auto, (max-width: 965px) 100vw, 965px\" \/><\/p>\n<figure id=\"attachment_54109\" aria-describedby=\"caption-attachment-54109\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-54109\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/20201228_091006-neve-Milano-28-dicembre-2020-e1609148318119.jpg\" alt=\"\" width=\"800\" height=\"450\" \/><figcaption id=\"caption-attachment-54109\" class=\"wp-caption-text\">Foto 2 \u2013 L\u2019impressionante caduta delle pressione barometrica che dai 1019 hPa delle 0 di domenica 27 \u00e8 scesa ai 988 hPa delle 8 del 28\/12 (dati espressi come pressione ridotta a livello del mare).<\/figcaption><\/figure>\n<figure id=\"attachment_54111\" aria-describedby=\"caption-attachment-54111\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-54111\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2020\/12\/20201228_055832-neve-Milano-28-dicembre-2020-e1609148025569.jpg\" alt=\"\" width=\"800\" height=\"450\" \/><figcaption id=\"caption-attachment-54111\" class=\"wp-caption-text\">Foto 4 \u2013 parco Solari innevato (28\/12 ore 5.45).<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<div class=\"linkwithin_hook\" id=\"https:\/\/www.climatemonitor.it\/?p=54107\"><\/div><script>\n<!-- \/\/LinkWithinCodeStart\nvar linkwithin_site_id = 1804759;\nvar linkwithin_div_class = \"linkwithin_hook\";\n\/\/LinkWithinCodeEnd -->\n<\/script>\n<script 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