{"id":47162,"date":"2018-01-17T07:00:46","date_gmt":"2018-01-17T07:00:46","guid":{"rendered":"http:\/\/www.climatemonitor.it\/?p=47162"},"modified":"2018-01-15T15:18:01","modified_gmt":"2018-01-15T15:18:01","slug":"bocce-ferme-carta-nazionale-dellanomalia-precipitativa-del-2017","status":"publish","type":"post","link":"https:\/\/www.climatemonitor.it\/?p=47162","title":{"rendered":"A Bocce Ferme &#8211; Carta Nazionale dell&#8217;Anomalia Precipitativa del 2017"},"content":{"rendered":"<p>L&#8217;analisi dell\u2019anomalia precipitativa del 2017 espressa come percentuale rispetto alla media del trentenni 1987-2016 \u00e8 stata condotta su 250 stazioni, 200 del dataset Gsod (https:\/\/www1.ncdc.noaa.gov\/pub\/data\/gsod\/) e 48 della rete Crea (http:\/\/cma.entecra.it\/Banca_dati_agrometeo\/index3.htm).<\/p>\n<p>Lasciando per un attimo da parte ogni giudizio circa la qualit\u00e0 dei dati GSOD (gi\u00e0 abbondantemente discussa qui: <a href=\"http:\/\/www.climatemonitor.it\/?p=46954\">http:\/\/www.climatemonitor.it\/?p=46954<\/a>), invito i lettori a tener presente che la rete utilizzata ha quantomeno il vantaggio di essere la stessa sull&#8217;intero arco temporale considerato. Quello che emerge \u00e8 l&#8217;enorme variabilit\u00e0 spaziale del livello di anomalia, con un&#8217;anomalia media di -22.1% al Nord (stazioni a latitudine &gt; 44\u00b0N), -32.9 al Centro (latitudine di 41-44\u00b0N) e -25.2 al Sud (latitudine &lt;41\u00b0N). Inoltre le anomalie pi\u00f9 spiccate si evidenziano sul versante tirrenico e sul Nordovest, a mio avviso segno della scarsa presenza delle grandi perturbazioni atlantiche e dei minimi del Golfo di Genova.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-47163 size-full\" src=\"http:\/\/www.climatemonitor.it\/wp-content\/uploads\/2018\/01\/Anomalia-pluviometrica-2017-su-media-trentennale-1988-2016.png\" alt=\"\" width=\"2285\" height=\"2004\" srcset=\"https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2018\/01\/Anomalia-pluviometrica-2017-su-media-trentennale-1988-2016.png 2285w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2018\/01\/Anomalia-pluviometrica-2017-su-media-trentennale-1988-2016-300x263.png 300w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2018\/01\/Anomalia-pluviometrica-2017-su-media-trentennale-1988-2016-768x674.png 768w, https:\/\/www.climatemonitor.it\/wp-content\/uploads\/2018\/01\/Anomalia-pluviometrica-2017-su-media-trentennale-1988-2016-1024x898.png 1024w\" sizes=\"auto, (max-width: 2285px) 100vw, 2285px\" \/><\/p>\n<p>La domanda che sorge spontanea \u00e8 se in termini di servizio sia pi\u00f9 utile un\u2019analisi di questo tipo rispetto all\u2019ansiogena pletora dei record secolari. E su quest\u2019ultimo appassionante (si fa per dire) tema segnalo a m\u00f2 di appendice che questa mattina ho analizzato la serie storica precipitativa mensile di Bologna dal 1813 al 2017. Il risultato \u00e8 che l\u2019anno 2017, con 571 mm di precipitazione totale, si colloca al 59\u00b0 posto nella graduatoria dei meno piovosi. I dati dal 1813 al 2011 sono di fonte Histalp (<a href=\"http:\/\/www.zamg.ac.at\/histalp\/dataset\/station\/csv.php\">http:\/\/www.zamg.ac.at\/histalp\/dataset\/station\/csv.php<\/a>) mentre quelli dal 2012 al 2017 provengono da Arpa Emilia Romagna\u00a0 (<a href=\"http:\/\/www.smr.arpa.emr.it\/dext3r\/\">http:\/\/www.smr.arpa.emr.it\/dext3r\/<\/a>).<\/p>\n<p>Non male per quello che a inizio dicembre fu definito l&#8217;anno meno piovoso dal 1800!<\/p>\n<div class=\"linkwithin_hook\" id=\"https:\/\/www.climatemonitor.it\/?p=47162\"><\/div><script>\n<!-- \/\/LinkWithinCodeStart\nvar linkwithin_site_id = 1804759;\nvar linkwithin_div_class = \"linkwithin_hook\";\n\/\/LinkWithinCodeEnd -->\n<\/script>\n<script src=\"http:\/\/www.linkwithin.com\/widget.js\"><\/script>\n<a href=\"http:\/\/www.linkwithin.com\/\"><img decoding=\"async\" src=\"http:\/\/www.linkwithin.com\/pixel.png\" alt=\"Related Posts Plugin for WordPress, Blogger...\" style=\"border: 0\" \/><\/a><script 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