{"id":3599,"date":"2022-09-02T08:14:00","date_gmt":"2022-09-02T08:14:00","guid":{"rendered":"https:\/\/loving-ardinghelli.77-247-67-170.plesk.page\/?p=3599"},"modified":"2025-11-10T14:44:55","modified_gmt":"2025-11-10T14:44:55","slug":"hvad-er-urban-heat-island-effekten","status":"publish","type":"post","link":"https:\/\/natureimpact.com\/da\/nyheder\/hvad-er-urban-heat-island-effekten\/","title":{"rendered":"Hvad er Urban Heat Island Effekten?"},"content":{"rendered":"<div>\n<p>Vi taler tit om Urban Heat Island Effekten n\u00e5r vi taler om <a href=\"https:\/\/natureimpact.com\/da\/plantevaegge\/udendoers-plantevaegge\/\">udend\u00f8rs plantev\u00e6gge<\/a> og <a href=\"https:\/\/natureimpact.com\/da\/sedumtage\/\">sedumtage<\/a>. Men hvad er Urban Heat Island effekten, og hvorfor er det skal vi huske at indt\u00e6nke gr\u00f8nne v\u00e6gge og sedumtage, n\u00e5r vi renoverer og bygger nyt i byerne?<\/p>\n<\/div>\n<div>Urban Heat Island effekten beskrives som et f\u00e6nomen, hvor byer opvarmes hurtigere p\u00e5 grund af mindre og mindre vegetation. En tiltagende urbanisering af et omr\u00e5de introducerer i h\u00f8jere grad overflader af sten, beton, asfalt og glas, som er hurtigere at opvarme og afgiver meget varme til omgivelserne. Udover mindre vegetation, er trafik, klimaanl\u00e6g og industri alle med til at opvarme byerne ekstra meget.<\/div>\n<h2>Gadens varme slugter<\/h2>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2024\/05\/kbh.jpg\" alt=\"\"><\/p>\n<div>\n<p>Der er mange videnskabelige udtryk at holde styr p\u00e5, n\u00e5r man taler om Urban Heat Island effekten. Lad os starte med evapotranspiration. Det er udtrykket der benyttes for bl.a. fordampning af vand fra planter og overflader. I mods\u00e6tning til gr\u00f8nne arealer, er evapotranspiration, markant reduceret i storbyerne da en stor del af nedb\u00f8ren fra dets overflader ledes ud af byen. Helt simpelt bruges solenergien i mindre grad til at fordampe vand, og i h\u00f8jere grad til at h\u00e6ve temperaturen i byen.<\/p>\n<p>N\u00e6ste term er \u2019Street Canyons\u2019. M\u00e5den moderne byer er anlagt p\u00e5 bidrager ogs\u00e5 til en h\u00f8jere temperatur, da luftstr\u00f8mmene begr\u00e6nses, s\u00e5 varmen fanges i s\u00e5kaldte \u2019Street canyons\u2019 (gadeslugter). Ligesom h\u00f8je bygninger holder p\u00e5 udstr\u00e5lingen og forhindrer, at den sendes ud og v\u00e6k.<\/p>\n<\/div>\n<h2>Fremtidens by med sedumtage og plantev\u00e6gge<\/h2>\n<div>Det er estimeret, at ca. 68% af verdens befolkning lever i byerne omkring \u00e5r 2050. Det er ligesom en sci-fi film, vi ved det. Derfor er det tid til at l\u00e6gge en plan for vores urbanisering af kloden, og det i en fart, hvis vi ikke vil g\u00e5 en usandsynlig varm fremtid i m\u00f8de. Med de rette tiltag og virkemidler kan vi afb\u00f8de slaget med varmehammeren en smule.\n<\/div>\n<ul>\n<li>\n<p>        <img decoding=\"async\" src=\"\/wp-content\/uploads\/2024\/05\/Aberdeen_1.jpg\" alt=\"\"><\/p>\n<\/li>\n<li>\n<p>        <img decoding=\"async\" src=\"\/wp-content\/uploads\/2024\/05\/Engholmene.jpg\" alt=\"\"><\/p>\n<\/li>\n<\/ul>\n<div>\n<p>De fleste af byernes tage, facader og gavle ligger ubrugte hen, s\u00e5 her kan naturlige gr\u00f8nne l\u00f8sninger virkelig f\u00e5 lov til at spille f\u00f8rste violin.<\/p>\n<p><a href=\"https:\/\/natureimpact.com\/da\/sedumtage\/\">Gr\u00f8nne tage<\/a> og <a href=\"https:\/\/natureimpact.com\/da\/plantevaegge\/udendoers-plantevaegge\/\">udend\u00f8rs plantev\u00e6gge<\/a> absorberer solstr\u00e5lingen med deres blade og bruger den opfangede energi til at drive fotosyntese. Ligesom flere planter betyder mere fordampning og dermed k\u00f8ling til byerne. Sedumtage og plantev\u00e6gge kan derfor v\u00e6re med til at erstatte meget af den tabte vegetation, der er fjernet pga. af urbaniseringen.<\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2024\/05\/FH_plantevaeg_2.jpg\" alt=\"\"><\/p>\n<div>\n<p>Gr\u00f8nne tage og levende v\u00e6gge har begge op til flere fordele en moderne by kan drage nytte af:<\/p>\n<ul>\n<li><a href=\"https:\/\/natureimpact.com\/da\/sedumtage\/vandtilbagehold-og-lokal-afledning-af-regnvand-lar\/\">Et sedumtag \u00f8ger vandtilbageholdet i perioder med meget nedb\u00f8r<\/a><\/li>\n<li>Begge elementer har en k\u00f8lende effekt i perioder med megen sol<\/li>\n<li>Sedumtage bidrager til en \u00f8get effekt af solcelleanl\u00e6ggene p\u00e5 byens tage, da sedumtag kombineret med solceller h\u00f8jner effektiviteten af solceller med 2-15%<\/li>\n<\/ul>\n<p>Som en sideeffekt af flere plantev\u00e6gge og sedumtage vil biodiversitetet i byerne stige, s\u00e5 vi kan nyde de mange flotte blomster og holde liv i vores gr\u00f8nne tiltag \u2013 ogs\u00e5 i fremtiden.<\/p>\n<p><a href=\"https:\/\/natureimpact.com\/da\/nyheder\/det-groenne-statement\/\">Du kan l\u00e6se mere om biodiversitet her<\/a> og der findes ogs\u00e5<a href=\"https:\/\/natureimpact.com\/da\/sedumtage\/faq\/\"> flere informationer i vores FAQ om sedumtage<\/a>.<\/p>\n<\/div>\n<div>Seneste nyt<\/div>\n<div>\n<\/div>\n<div>\n<div style=\"float:right;\">\n<span><span><a href=\"https:\/\/natureimpact.com\/da\/\">Forside<\/a><\/span><\/span>\n<\/div>\n<\/div>\n<hr>\n<p><!--more--><br \/>\n<!-- {\"type\":\"layout\",\"children\":[{\"type\":\"section\",\"props\":{\"animation\":\"fade\",\"header_transparent\":false,\"header_transparent_noplaceholder\":false,\"height\":\"viewport\",\"height_offset_top\":true,\"image_effect\":\"parallax\",\"image_loading\":true,\"image_parallax_bgy\":\"40vh\",\"image_position\":\"top-center\",\"image_size\":\"cover\",\"image_width\":\"2560\",\"media_overlay\":\"rgba(0, 0, 0, 0.75)\",\"media_overlay_parallax_opacity\":\"0.4,1\",\"padding_remove_bottom\":false,\"padding_remove_horizontal\":false,\"padding_remove_top\":false,\"style\":\"default\",\"text_color\":\"light\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"bottom\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"props\":{\"margin\":\"xlarge\",\"width\":\"default\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"vertical_align\":\"bottom\"},\"children\":[{\"type\":\"headline\",\"props\":{\"animation\":\"none\",\"blend\":false,\"title_element\":\"h1\",\"title_style\":\"heading-small\"},\"source\":{\"query\":{\"name\":\"posts.singlePost\"},\"props\":{\"content\":{\"filters\":{\"search\":\"\"},\"name\":\"title\"}}}},{\"type\":\"headline\",\"props\":{\"margin\":\"remove-vertical\",\"title_element\":\"div\",\"title_style\":\"h4\"},\"source\":{\"query\":{\"name\":\"posts.singlePost\"},\"props\":{\"content\":{\"filters\":{\"search\":\"\",\"date\":\"\"},\"name\":\"date\"}}}}]}]}],\"name\":\"Hero\",\"source\":{\"query\":{\"name\":\"posts.singlePost\"},\"props\":{\"image\":{\"filters\":{\"search\":\"\"},\"name\":\"featuredImage.url\"}}}},{\"type\":\"section\",\"props\":{\"animation\":\"fade\",\"image_position\":\"center-center\",\"padding\":\"large\",\"style\":\"default\",\"title_breakpoint\":\"xl\",\"title_position\":\"top-left\",\"title_rotation\":\"left\",\"vertical_align\":\"\",\"width\":\"default\"},\"children\":[{\"type\":\"row\",\"props\":{\"column_gap\":\"large\",\"layout\":\"3-4,1-4\",\"margin\":\"xlarge\",\"row_gap\":\"large\",\"width\":\"default\"},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\",\"width_medium\":\"3-4\"},\"children\":[{\"type\":\"text\",\"props\":{\"block_align\":\"center\",\"column_breakpoint\":\"m\",\"content\":\"\n\n<p>Vi taler tit om Urban Heat Island Effekten n\\u00e5r vi taler om <a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/plantevaegge\\\/udendoers-plantevaegge\\\/\\\">udend\\u00f8rs plantev\\u00e6gge<\\\/a> og <a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/sedumtage\\\/\\\">sedumtage<\\\/a>. Men hvad er Urban Heat Island effekten, og hvorfor er det skal vi huske at indt\\u00e6nke gr\\u00f8nne v\\u00e6gge og sedumtage, n\\u00e5r vi renoverer og bygger nyt i byerne?<\\\/p>\",\"margin\":\"default\",\"text_color\":\"emphasis\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"Urban Heat Island effekten beskrives som et f\\u00e6nomen, hvor byer opvarmes hurtigere p\\u00e5 grund af mindre og mindre vegetation. En tiltagende urbanisering af et omr\\u00e5de introducerer i h\\u00f8jere grad overflader af sten, beton, asfalt og glas, som er hurtigere at opvarme og afgiver meget varme til omgivelserne. Udover mindre vegetation, er trafik, klimaanl\\u00e6g og industri alle med til at opvarme byerne ekstra meget.\",\"margin\":\"default\"}},{\"type\":\"headline\",\"props\":{\"content\":\"Gadens varme slugter\",\"title_element\":\"h2\"}},{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2024\\\/05\\\/kbh.jpg\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"margin\":\"medium\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p>Der er mange videnskabelige udtryk at holde styr p\\u00e5, n\\u00e5r man taler om Urban Heat Island effekten. Lad os starte med evapotranspiration. Det er udtrykket der benyttes for bl.a. fordampning af vand fra planter og overflader. I mods\\u00e6tning til gr\\u00f8nne arealer, er evapotranspiration, markant reduceret i storbyerne da en stor del af nedb\\u00f8ren fra dets overflader ledes ud af byen. Helt simpelt bruges solenergien i mindre grad til at fordampe vand, og i h\\u00f8jere grad til at h\\u00e6ve temperaturen i byen.<\\\/p>\\n\n\n<p>N\\u00e6ste term er \\u2019Street Canyons\\u2019. M\\u00e5den moderne byer er anlagt p\\u00e5 bidrager ogs\\u00e5 til en h\\u00f8jere temperatur, da luftstr\\u00f8mmene begr\\u00e6nses, s\\u00e5 varmen fanges i s\\u00e5kaldte \\u2019Street canyons\\u2019 (gadeslugter). Ligesom h\\u00f8je bygninger holder p\\u00e5 udstr\\u00e5lingen og forhindrer, at den sendes ud og v\\u00e6k.<\\\/p>\",\"margin\":\"default\"}},{\"type\":\"headline\",\"props\":{\"content\":\"Fremtidens by med sedumtage og plantev\\u00e6gge\",\"title_element\":\"h2\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"Det er estimeret, at ca. 68% af verdens befolkning lever i byerne omkring \\u00e5r 2050. Det er ligesom en sci-fi film, vi ved det. Derfor er det tid til at l\\u00e6gge en plan for vores urbanisering af kloden, og det i en fart, hvis vi ikke vil g\\u00e5 en usandsynlig varm fremtid i m\\u00f8de. Med de rette tiltag og virkemidler kan vi afb\\u00f8de slaget med varmehammeren en smule.\\n\",\"margin\":\"default\"}},{\"type\":\"gallery\",\"props\":{\"filter_align\":\"left\",\"filter_all\":true,\"filter_grid_breakpoint\":\"m\",\"filter_grid_width\":\"auto\",\"filter_position\":\"top\",\"filter_style\":\"tab\",\"grid_default\":\"1\",\"grid_medium\":\"2\",\"image_box_shadow\":\"xlarge\",\"image_loading\":true,\"image_transition\":\"scale-up\",\"image_transition_border\":false,\"item_animation\":true,\"lightbox_bg_close\":true,\"link_style\":\"default\",\"link_text\":\"Read more\",\"margin\":\"medium\",\"meta_align\":\"below-title\",\"meta_element\":\"div\",\"meta_style\":\"text-meta\",\"overlay_hover\":false,\"overlay_mode\":\"cover\",\"overlay_position\":\"center\",\"overlay_style\":\"\",\"overlay_transition\":\"fade\",\"show_content\":true,\"show_hover_image\":true,\"show_hover_video\":true,\"show_link\":true,\"show_meta\":true,\"show_title\":true,\"text_align\":\"center\",\"text_color\":\"light\",\"title_element\":\"h3\",\"title_hover_style\":\"reset\"},\"children\":[{\"type\":\"gallery_item\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2024\\\/05\\\/Aberdeen_1.jpg\"}},{\"type\":\"gallery_item\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2024\\\/05\\\/Engholmene.jpg\"}}]},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p>De fleste af byernes tage, facader og gavle ligger ubrugte hen, s\\u00e5 her kan naturlige gr\\u00f8nne l\\u00f8sninger virkelig f\\u00e5 lov til at spille f\\u00f8rste violin.<\\\/p>\\n\n\n<p><a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/sedumtage\\\/\\\">Gr\\u00f8nne tage<\\\/a> og <a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/plantevaegge\\\/udendoers-plantevaegge\\\/\\\">udend\\u00f8rs plantev\\u00e6gge<\\\/a> absorberer solstr\\u00e5lingen med deres blade og bruger den opfangede energi til at drive fotosyntese. Ligesom flere planter betyder mere fordampning og dermed k\\u00f8ling til byerne. Sedumtage og plantev\\u00e6gge kan derfor v\\u00e6re med til at erstatte meget af den tabte vegetation, der er fjernet pga. af urbaniseringen.<\\\/p>\",\"margin\":\"default\"}},{\"type\":\"image\",\"props\":{\"image\":\"wp-content\\\/uploads\\\/2024\\\/05\\\/FH_plantevaeg_2.jpg\",\"image_box_decoration\":\"secondary\",\"image_box_shadow\":\"large\",\"image_loading\":true,\"image_svg_color\":\"emphasis\",\"margin\":\"medium\"}},{\"type\":\"text\",\"props\":{\"column_breakpoint\":\"m\",\"content\":\"\n\n<p>Gr\\u00f8nne tage og levende v\\u00e6gge har begge op til flere fordele en moderne by kan drage nytte af:<\\\/p>\\n\n\n<ul>\\n\n\n<li><a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/sedumtage\\\/vandtilbagehold-og-lokal-afledning-af-regnvand-lar\\\/\\\">Et sedumtag \\u00f8ger vandtilbageholdet i perioder med meget nedb\\u00f8r<\\\/a><\\\/li>\\n\n\n<li>Begge elementer har en k\\u00f8lende effekt i perioder med megen sol<\\\/li>\\n\n\n<li>Sedumtage bidrager til en \\u00f8get effekt af solcelleanl\\u00e6ggene p\\u00e5 byens tage, da sedumtag kombineret med solceller h\\u00f8jner effektiviteten af solceller med 2-15%<\\\/li>\\n<\\\/ul>\\n\n\n<p>Som en sideeffekt af flere plantev\\u00e6gge og sedumtage vil biodiversitetet i byerne stige, s\\u00e5 vi kan nyde de mange flotte blomster og holde liv i vores gr\\u00f8nne tiltag \\u2013 ogs\\u00e5 i fremtiden.<\\\/p>\\n\n\n<p><a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/nyheder\\\/det-groenne-statement\\\/\\\">Du kan l\\u00e6se mere om biodiversitet her<\\\/a> og der findes ogs\\u00e5<a href=\\\"https:\\\/\\\/natureimpact.com\\\/da\\\/sedumtage\\\/faq\\\/\\\"> flere informationer i vores FAQ om sedumtage<\\\/a>.<\\\/p>\",\"margin\":\"default\"}}]},{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky\":\"section\",\"position_sticky_breakpoint\":\"m\",\"position_sticky_offset\":\"150px\",\"width_medium\":\"1-4\"},\"children\":[{\"type\":\"headline\",\"props\":{\"block_align\":\"center\",\"content\":\"Seneste 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style=\\\"float:right;\\\">\\n[wpseo_breadcrumb]\\n<\\\/div>\"}}]}]},{\"type\":\"row\",\"props\":{\"margin\":\"small\",\"margin_remove_top\":false},\"children\":[{\"type\":\"column\",\"props\":{\"image_position\":\"center-center\",\"position_sticky_breakpoint\":\"m\"},\"children\":[{\"type\":\"divider\",\"props\":{\"divider_element\":\"hr\"}}]}]}],\"name\":\"Yoast br\\u00f8dkrumme over footer\"}],\"version\":\"4.5.27\"} --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi taler tit om Urban Heat Island Effekten n\u00e5r vi taler om udend\u00f8rs plantev\u00e6gge og sedumtage. Men hvad er Urban Heat Island effekten, og hvorfor er det skal vi huske at indt\u00e6nke gr\u00f8nne v\u00e6gge og sedumtage, n\u00e5r vi renoverer og bygger nyt i byerne? Urban Heat Island effekten beskrives som et f\u00e6nomen, hvor byer opvarmes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3600,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nyheder"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hvad er Urban Heat Island Effekten? - Nature Impact<\/title>\n<meta name=\"description\" content=\"L\u00e6s hvordan gr\u00f8nne tage og byens vegetation kan modvirke Urban Heat Island Effekten ved fx at absorbere solens str\u00e5ler.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/natureimpact.com\/da\/nyheder\/hvad-er-urban-heat-island-effekten\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hvad er Urban Heat Island Effekten? 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