{"id":12175,"date":"2017-03-07T10:09:35","date_gmt":"2017-03-07T10:09:35","guid":{"rendered":"https:\/\/www.meteo.cat\/wpweb\/?page_id=12175"},"modified":"2025-07-25T11:46:18","modified_gmt":"2025-07-25T11:46:18","slug":"campanya-meteocatpedra","status":"publish","type":"page","link":"https:\/\/www.meteo.cat\/wpweb\/observacions\/campanya-meteocatpedra\/","title":{"rendered":"Campanya #MeteocatPedra"},"content":{"rendered":"\n<p><strong>#MeteocatPedra<\/strong>\u202f\u202f\u00e9s una campanya participativa que t\u00e9 com a objectiu l\u2019estudi de la pedra a partir de les dades, les imatges i els v\u00eddeos obtinguts de la participaci\u00f3 ciutadana a trav\u00e9s de les xarxes socials i del correu electr\u00f2nic.<\/p>\n\n\n\n<p>La campanya combina els sistemes d\u2019an\u00e0lisi meteorol\u00f2gica, la informaci\u00f3 de la <a href=\"https:\/\/www.meteo.cat\/observacions\/xom_observacio\">xarxa d\u2019observadors<\/a> (XOM), desplegada a tot el territori, i la a informaci\u00f3 obtinguda gr\u00e0cies a la col\u00b7laboraci\u00f3 ciutadana, amb l&#8217;objectiu d&#8217;augmentar el coneixement de la calamarsa i la pedra, per millorar les eines de diagnosi i predicci\u00f3 de la pedra.<\/p>\n\n\n\n<p>L\u2019an\u00e0lisi de les imatges i v\u00eddeos rebuts i comparant amb diferents eines d&#8217;observaci\u00f3 i teledetecci\u00f3 permet aprofundir en l\u2019estudi de la calamarsa i la pedra i extreure\u2019n conclusions pr\u00e0ctiques que\u202fpermeten millorar la mitigaci\u00f3 del risc en diferents \u00e0mbits socials i econ\u00f2mics, com ara l\u2019agricultura o els transports.<\/p>\n\n\n\n<p>Anualment s&#8217;elabora un mapa participatiu d\u2019observacions de calamarsa i pedra, on es combinen les dades de la ciutadania, de la XOM i dels gran\u00edmetres del Pla de Lleida de l&#8217;<a href=\"https:\/\/advponent.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">ADV Terres de Ponent<\/a>. Aquesta informaci\u00f3 permet validar i millorar la informaci\u00f3 del <a href=\"https:\/\/www.meteo.cat\/wpweb\/climatologia\/butlletins-i-episodis-meteorologics\/butlleti-anual\/\">butllet\u00ed clim\u00e0tic anual<\/a>.<\/p>\n\n\n\n<p>Tamb\u00e9 est\u00e0 en marxa un projecte innovador en l&#8217;\u00e0mbit mundial que consisteix a emmagatzemar pedres de mida gran per analitzar-les metodologies completament noves per ampliar el coneixement de la formaci\u00f3 i creixement de la pedra. <\/p>\n\n\n\n<p><\/p>\n\n\n\n<nav class=\"ancores\">\n<a href=\"#participa\">Com hi pots participar?<\/a>\n<a href=\"#gran\">Pedra molt gran<\/a>\n<a href=\"#definicions\">Definicions<\/a>\n<a href=\"\/wpweb\/observacions\/campanya-meteocatpedra\/pedra-a-catalunya\/\">Pedra a Catalunya<\/a>\n<\/nav>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"participa\"><strong>Com hi pots participar?&nbsp;<\/strong><\/h2>\n\n\n\n<p>Si tens const\u00e0ncia de calamarsa o pedra prop teu, pren una fotografia amb una o diverses mostres, juntament amb un objecte de refer\u00e8ncia (millor si \u00e9s una moneda o un regla, per\u00f2 qualsevol cosa que permeti determinar-ne la mida va b\u00e9) al costat. <\/p>\n\n\n\n<p>Llavors, fer-nos-la arribar per qualsevol dels diferents canals possibles amb el #MeteocatPedra<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24120255\/facebook_color.png\"><img src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24120255\/facebook_color.png\" alt=\"Icona del canal de Facebook @meteocat\" class=\"wp-image-35189\"\/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\">@meteocat<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121024\/whatsapp_color.png\"><img src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121024\/whatsapp_color.png\" alt=\"Icona Whatsapp 667051592\" class=\"wp-image-35193\"\/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\">667051592<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24120535\/twitter_color.png\"><img src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24120535\/twitter_color.png\" alt=\"Icona del canal de X @meteocat\" class=\"wp-image-35191\"\/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\">@meteocat<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121034\/correuelectronic_color.png\"><img src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121034\/correuelectronic_color.png\" alt=\"Icona correu electr\u00f2mic x&#97;&#114;&#x78;&#x65;&#x73;&#x2e;m&#101;&#116;&#101;&#x6f;&#x63;&#x61;t&#64;&#103;&#101;&#x6e;&#x63;&#x61;t&#46;&#99;&#97;&#x74;\" class=\"wp-image-35194\"\/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\">&#120;a&#114;x&#101;s&#x2e;m&#x65;t&#x65;o&#x63;a&#x74;&#64;&#x67;e&#x6e;c&#x61;t&#x2e;c&#x61;&#116;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121006\/instagram_color.png\"><img src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121006\/instagram_color.png\" alt=\"Icona del canal de Instagram @meteocat_cat\" class=\"wp-image-35192\"\/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\">@meteocat_cat<\/p>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"text-color\"><strong>Qu\u00e8 cal incloure a la fotografia?<\/strong><\/h3>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns\">\n<div class=\"wp-block-column\">\n<p class=\"has-text-align-center\">Geolocalitzaci\u00f3: lloc on s\u2019ha fet la foto<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121151\/localitzacio-2-1.png\"><img loading=\"lazy\" src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121151\/localitzacio-2-1.png\" alt=\"\" class=\"wp-image-35200\" width=\"79\" height=\"109\"\/><\/a><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p class=\"has-text-align-center\">Refer\u00e8ncia de la mida: comparar-la amb algun objecte<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-thumbnail is-resized\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121113\/mida-pedra.jpg\"><img loading=\"lazy\" src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121113\/mida-pedra-150x150.jpg\" alt=\"\" class=\"wp-image-35197\" width=\"150\" height=\"150\"\/><\/a><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column\">\n<p class=\"has-text-align-center\">Data i hora de l&#8217;episodi de pedragada<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121136\/calendari.png\"><img loading=\"lazy\" src=\"https:\/\/static-m.meteo.cat\/wordpresswebpre\/wp-content\/uploads\/2025\/07\/24121136\/calendari.png\" alt=\"\" class=\"wp-image-35199\" width=\"104\" height=\"119\"\/><\/a><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"gran\"><strong>I si la pedra \u00e9s molt gran, m\u00e9s de 7 cm, qu\u00e8 he de fer?<\/strong><\/h2>\n\n\n\n<p>Un cop ha parat de pedregar i est\u00e0s fora de perill pots:<\/p>\n\n\n\n<ul><li>Recollir el m\u00e0xim nombre de pedres, especialment aquelles que es troben en m\u00e9s bon estat<\/li><li>Ficar-les dins bosses de pl\u00e0stic, preferentment separades, i guardar-les al congelador.<\/li><li>Avisar al Servei Meteorol\u00f2gic de Catalunya via una de les diferents opcions anteriors, indicant que disposes de les pedres al congelador.<\/li><li>Ens posarem en contacte amb tu el m\u00e9s aviat possible, per venir a recollir-les i que ens expliquis la teva experi\u00e8ncia.<\/li><\/ul>\n\n\n\n<h2 id=\"definicions\">Definicions<\/h2>\n\n\n\n<h3>Calamarsa<\/h3>\n\n\n\n<p class=\"has-normal-font-size\">Grans de gla\u00e7 esf\u00e8rics de fins a 5 mm de di\u00e0metre, rarament c\u00f2nics, transparents o semitransparents. Poden tenir un nucli de calabruix o neu granulada. No es trenquen en caure a terra i s\u00f3n dif\u00edcils d\u2019aixafar.&nbsp;<\/p>\n\n\n\n<h3>Pedra<\/h3>\n\n\n\n<p>Grans de gla\u00e7 esf\u00e8rics de m\u00e9s de 5 mm de di\u00e0metre, conjunt de grans de gla\u00e7 soldats entre s\u00ed, o trossets de gla\u00e7 irregulars, sovint formats per capes alternativament opaques i transparents. Cauen durant tempestes fortes i gaireb\u00e9 sempre acompanyats d\u2019intensa activitat el\u00e8ctrica. Es considera pedra grossa quan el seu di\u00e0metre major \u00e9s superior als 2 cm.&nbsp;<\/p>\n\n\n\n<p>Segons la mida es classifica en:<br>\u2022 Pedra petita &gt; 0.5 cm &#8211; 2 cm<br>\u2022 Pedra grossa \u2265 2 cm \u2013 5 cm<br>\u2022 Pedra molt grossa \u2265 5 cm \u2013 10 cm<br>\u2022 Pedra gegant \u2265 10 cm<\/p>\n","protected":false},"excerpt":{"rendered":"<p>#MeteocatPedra\u202f\u202f\u00e9s una campanya participativa que t\u00e9 com a objectiu l\u2019estudi de la pedra a partir de les dades, les imatges i els v\u00eddeos obtinguts de la participaci\u00f3 ciutadana a trav\u00e9s de les xarxes socials i del correu electr\u00f2nic. La campanya combina els sistemes d\u2019an\u00e0lisi meteorol\u00f2gica, la informaci\u00f3 de la xarxa d\u2019observadors (XOM), desplegada a tot [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":461,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-sidebar.php","meta":{"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"_links":{"self":[{"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/pages\/12175"}],"collection":[{"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/comments?post=12175"}],"version-history":[{"count":26,"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/pages\/12175\/revisions"}],"predecessor-version":[{"id":44125,"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/pages\/12175\/revisions\/44125"}],"up":[{"embeddable":true,"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/pages\/461"}],"wp:attachment":[{"href":"https:\/\/www.meteo.cat\/wpweb\/wp-json\/wp\/v2\/media?parent=12175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}