{"id":14822,"date":"2022-09-26T15:58:35","date_gmt":"2022-09-26T13:58:35","guid":{"rendered":"https:\/\/www.deepseareporter.com\/?p=5827"},"modified":"2022-11-11T11:59:03","modified_gmt":"2022-11-11T10:59:03","slug":"kritiska-lagen-for-klimatet","status":"publish","type":"post","link":"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/","title":{"rendered":"Kritiska l\u00e4gen f\u00f6r klimatet"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\">Jordens klimat \u00e4r&nbsp;n\u00e4ra&nbsp;flera tippningspunkter d\u00e4r utvecklingen blir o\u00e5terkallelig, med enorma konsekvenser&nbsp;f\u00f6r&nbsp;v\u00e5ra livsvillkor. Nu s\u00e4tter forskare hoppet till en annan sorts tr\u00f6skelpunkter \u2013 som kan f\u00e5 oss att snabbt \u00e4ndra beteende.<\/h4>\n\n\n\n<p>Ett barn f\u00f6rs\u00f6ker l\u00e5ngsamt dra sig nedf\u00f6r en rutschkana. Vid n\u00e5gon punkt blir det&nbsp;f\u00f6r&nbsp;sent att ta sig upp\u00e5t igen \u2013 barnet kommer att hamna l\u00e4ngst ner hur det \u00e4n b\u00e4r sig \u00e5t.<\/p>\n\n\n\n<p>Ungef\u00e4r s\u00e5 fungerar tippningspunkter, eller tr\u00f6skelpunkter,&nbsp;f\u00f6r&nbsp;klimatet: Vid en viss temperatur\u00f6kning kan viktiga jordsystem tippa \u00f6ver i ett nytt tillst\u00e5nd, d\u00e4r&nbsp;f\u00f6r\u00e4ndringen forts\u00e4tter vad vi \u00e4n g\u00f6r.<\/p>\n\n\n\n<p>I m\u00e5nga fall handlar det om system som reglerar v\u00e5ra livsf\u00f6rh\u00e5llanden p\u00e5 jorden:<\/p>\n\n\n\n<p>Ist\u00e4cken p\u00e5 Gr\u00f6nland och V\u00e4stantarktis som n\u00e4r de sm\u00e4lter f\u00e5r havsniv\u00e5n att h\u00f6jas med flera meter. Viktiga Atlantstr\u00f6mmar som n\u00e4r de st\u00f6rs bidrar till mer extremv\u00e4der och torka. Upptinad permafrost som kan sl\u00e4ppa ut lika mycket v\u00e4xthusgaser som hela Europa p\u00e5 ett \u00e5r \u2013 och sp\u00e4da p\u00e5 uppv\u00e4rmningen ytterligare,&nbsp;f\u00f6r&nbsp;att n\u00e4mna n\u00e5gra exempel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a001nh-1-1280x750-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"750\" src=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a001nh-1-1280x750-1.jpeg\" alt=\"illustrerad v\u00e4rldskarta med klimatets tippningspunkter\" class=\"wp-image-14802\" srcset=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a001nh-1-1280x750-1.jpeg 1280w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a001nh-1-1280x750-1-720x422.jpeg 720w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a001nh-1-1280x750-1-768x450.jpeg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a><figcaption class=\"wp-element-caption\">Viktiga jordsystem som kan tippa \u00f6ver vid en temperatur\u00f6kning p\u00e5 upp till 2\u00b0C. \nTotalt finns 16 viktiga jordsystem som kan tippa \u00f6ver vid olika temperatur\u00f6kningar, enligt ny forskning. <b>Grafik: Anders Humlebo\/TT<\/b><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">En ljuspunkt<\/h2>\n\n\n\n<p>K\u00e4nns det nattsvart? Kanske. Men forskningen kring tippningspunkter ger ocks\u00e5 en ljusglimt: det handlar om de sociala motsvarigheterna till klimatets tr\u00f6skelpunkter. Hur sm\u00e5&nbsp;f\u00f6r\u00e4ndringar i normer kan f\u00e5 oss att &#8221;tippa \u00f6ver&#8221; i nya beteendem\u00f6nster, som kan leda till snabba utsl\u00e4ppsminskningar.<\/p>\n\n\n\n<p>Mer om det senare. F\u00f6rst mer av det nattsvarta: redan vid dagens niv\u00e5 av uppv\u00e4rmning \u2013 drygt 1,1 grad \u00f6ver f\u00f6rindustriell niv\u00e5 \u2013 \u00e4r vi i riskzonen&nbsp;f\u00f6r&nbsp;fem tippningspunkter. Det visade nyligen en studie i tidskriften Science som&nbsp;f\u00f6r&nbsp;f\u00f6rsta g\u00e5ngen analyserat vid vilka temperaturh\u00f6jningar olika tippningspunkter kan triggas.<\/p>\n\n\n\n<p>Forskarnas bistra budskap \u00e4r att vi redan nu \u00e4r bortom &#8221;en s\u00e4ker zon\u201d&nbsp;f\u00f6r&nbsp;jordens klimat.<\/p>\n\n\n\n<p>&#8211; \u00c4ven om vi skulle lyckas stoppa uppv\u00e4rmningen nu kan till exempel isarna p\u00e5 Gr\u00f6nland och v\u00e4stra Antarktis forts\u00e4tta att sm\u00e4lta irreversibelt, s\u00e4ger David Armstrong McKay, forskare vid Stockholm Resilience Centre.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Varnar&nbsp;f\u00f6r&nbsp;apati<\/h2>\n\n\n\n<p>Han \u00e4r huvudf\u00f6rfattare till studien d\u00e4r ett internationellt forskarlag g\u00e5tt igenom \u00f6ver 200 vetenskapliga artiklar p\u00e5 omr\u00e5det. Slutsatsen \u00e4r att det finns 16 tippningspunkter, d\u00e4r effekterna kan sl\u00e5 igenom fullt ut om alltifr\u00e5n ett decennium till om n\u00e5gra tusen \u00e5r.<\/p>\n\n\n\n<p>Studien ger starkt st\u00f6d&nbsp;f\u00f6r&nbsp;Parisavtalets mer ambiti\u00f6sa m\u00e5l \u2013 att begr\u00e4nsa uppv\u00e4rmningen till ,5 grader \u2013 i st\u00e4llet&nbsp;f\u00f6r&nbsp;det l\u00e4gre satta m\u00e5let tv\u00e5 grader, d\u00e5 vi enligt forskarna kan passera ytterligare allvarliga tippningspunkter.<\/p>\n\n\n\n<p>Men med de klimatl\u00f6ften som v\u00e4rldens l\u00e4nder gett hittills styr m\u00e4nskligheten snarare mot tv\u00e5 till tre graders uppv\u00e4rmning, enligt forskargruppen Climate Action Tracker.<\/p>\n\n\n\n<p>K\u00e4nns det uppgivet? Vissa forskare varnar just&nbsp;f\u00f6r&nbsp;att begreppet tippningspunkter, som ger bilden av hotande&nbsp;f\u00f6r\u00e4ndringar utan \u00e5terv\u00e4ndo, kan leda till apati snarare \u00e4n att f\u00e5 oss att agera&nbsp;f\u00f6r&nbsp;att f\u00e5 bukt med utsl\u00e4ppen.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a005nh-1-1280x938-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"938\" src=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a005nh-1-1280x938-1.jpeg\" alt=\"fisk och korall\" class=\"wp-image-14798\" srcset=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a005nh-1-1280x938-1.jpeg 1280w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a005nh-1-1280x938-1-720x528.jpeg 720w, https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a005nh-1-1280x938-1-768x563.jpeg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a><figcaption class=\"wp-element-caption\">Tropikernas korallrev \u00e4r n\u00e4ra att n\u00e5 en kritisk tippningspunkt d\u00e4r utvecklingen mot en alltmer utbredd massd\u00f6d blir o\u00e5terkallelig. \nBilden visar korallrev utanf\u00f6r Bali, Indonesien. <b>Foto: Wolf Hilbertz\/AP\/TT.<\/b><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">&#8221;Inte&nbsp;f\u00f6r&nbsp;sent&#8221;<\/h2>\n\n\n\n<p>Gustaf Hugelius, forskare i naturgeografi och bitr\u00e4dande f\u00f6rest\u00e5ndare vid Bolincentret&nbsp;f\u00f6r&nbsp;klimatforskning, h\u00e5ller delvis med:<\/p>\n\n\n\n<p>&#8211; D\u00e4rf\u00f6r \u00e4r det viktigt att betona n\u00e4r vi pratar om hur illa st\u00e4llt det \u00e4r, att det inte&nbsp;f\u00f6r&nbsp;sent.<\/p>\n\n\n\n<p>\u00c4ven forskarna bakom den nya analysen \u00e4r tydliga med att vi fortfarande kan minska risken&nbsp;f\u00f6r&nbsp;de allvarligaste brytpunkterna&nbsp;f\u00f6r&nbsp;klimatet&nbsp;och att varje tiondels grad g\u00f6r skillnad.<\/p>\n\n\n\n<p>Begreppet tippningspunkter har \u00e4ven kritiserats&nbsp;f\u00f6r&nbsp;att ge bilden av att&nbsp;f\u00f6r\u00e4ndringen sker tv\u00e4rt n\u00e4r det i de flesta fall handlar om ett temperaturspann d\u00e4r&nbsp;f\u00f6r\u00e4ndringen accelererar kraftigt.<\/p>\n\n\n\n<p>Gustaf Hugelius tar sitt eget forskningsomr\u00e5de \u2013 den tinande permafrosten \u2013 som exempel.Det finns inget tydligt gradtal d\u00e4r vi kan s\u00e4ga att all permafrost tinar, men med runt 1,5 graders uppv\u00e4rmning sker det p\u00e5 stora omr\u00e5den, fr\u00e5n Alaska och Kanada till Sibirien och norra Sverige.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Utl\u00f6sa konflikter<\/h2>\n\n\n\n<p>S\u00e5 vilken tippningspunkt b\u00f6r vi vara mest oroade \u00f6ver?<\/p>\n\n\n\n<p>Meningarna g\u00e5r is\u00e4r, men den som Gustaf Hugelius kallar \u201dallra l\u00e4skigast\u201d r\u00f6r ist\u00e4cket p\u00e5 V\u00e4stantarktis.<\/p>\n\n\n\n<p>&#8211; Vissa modeller pekar p\u00e5 att vi snart passerar en punkt d\u00e4r avsm\u00e4ltningen ger sex till nio meters havsniv\u00e5h\u00f6jning. \u00c4ven om det sker p\u00e5 n\u00e5gra hundra \u00e5rs sikt s\u00e5 inneb\u00e4r det enorma&nbsp;f\u00f6r\u00e4ndringar i livsvillkoren&nbsp;f\u00f6r&nbsp;m\u00e5nga m\u00e4nniskor. Till exempel skulle viktiga omr\u00e5den med produktiv jordbruksmark i delar av Afrika och Asien vara under vatten. Vad h\u00e4nder n\u00e4r det inte l\u00e4ngre g\u00e5r att producera mat d\u00e4r? Det kan leda till konflikter man inte ens vill t\u00e4nka p\u00e5, s\u00e4ger Gustaf Hugelius.<\/p>\n\n\n\n<p>\u00c4ven stora delar av Sk\u00e5ne, Blekinge och Stockholm hamnar under vatten i det scenariot, konstaterar han.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sista hoppet?<\/h2>\n\n\n\n<p>Nu till ljusglimten.<\/p>\n\n\n\n<p>\u201dV\u00e5rt b\u00e4sta \u2013 och m\u00f6jligen sista \u2013 hopp.\u201d S\u00e5 ben\u00e4mndes de sociala tippningspunkterna under \u00f6ppningstalet till en forskarkonferens som nyligen h\u00f6lls p\u00e5 temat tippningspunkter vid universitetet i brittiska Exeter. Den handlade om b\u00e5de klimatets och de sociala normernas brytpunkter.<\/p>\n\n\n\n<p>Tanken \u00e4r att sm\u00e5 \u201dknuffar\u201d p\u00e5 v\u00e5rt beteende, genom exempelvis ekonomiska incitament, kan leda till snabba beteendef\u00f6r\u00e4ndringar som minskar v\u00e5ra utsl\u00e4pp, f\u00f6rklarar David Armstrong McKay som deltog i konferensen.<\/p>\n\n\n\n<p>Ett exempel \u00e4r n\u00e4r elbilar med hj\u00e4lp av skatter och subventioner blev billigare \u00e4n bensinbilar i Norge och snabbt tog ledningen f\u00f6rs\u00e4ljningsm\u00e4ssigt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">P\u00e5verka k\u00f6ttnormen<\/h2>\n\n\n\n<p>Forskning p\u00e5g\u00e5r bland annat om hur man kan identifiera omr\u00e5den d\u00e4r vi \u00e4r&nbsp;n\u00e4ra&nbsp;en social tippningspunkt och hur vi kan lockas att tippa \u00f6ver. Men syns\u00e4ttet har \u00e4ven v\u00e4ckt kritik, bland annat&nbsp;f\u00f6r&nbsp;att makthavare kan tolka det som att det bara beh\u00f6vs sm\u00e5&nbsp;f\u00f6r\u00e4ndringar&nbsp;f\u00f6r&nbsp;att f\u00e5 till en stor klimatomst\u00e4llning.<\/p>\n\n\n\n<p>David Armstrong McKay ser ocks\u00e5 den risken, men tror \u00e4nd\u00e5 att sociala tippningspunkter \u00e4r v\u00e4rda att unders\u00f6ka. Inte minst&nbsp;f\u00f6r&nbsp;att f\u00e5 till livsstilsf\u00f6r\u00e4ndringar som han menar beh\u00f6vs.<\/p>\n\n\n\n<p>&#8211; F\u00f6r&nbsp;att g\u00f6ra det mer normaliserat att inte flyga, att \u00e4ta mer vegetariskt eller att k\u00f6ra mindre bil, till exempel, kan detta kan bli viktigt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jordens klimat \u00e4r\u00a0n\u00e4ra\u00a0flera tippningspunkter d\u00e4r utvecklingen blir o\u00e5terkallelig, med enorma konsekvenser\u00a0f\u00f6r\u00a0v\u00e5ra livsvillkor.Nu s\u00e4tter forskare hoppet till en annan sorts tr\u00f6skelpunkter \u2013 som kan f\u00e5 oss att snabbt \u00e4ndra beteende<\/p>\n","protected":false},"author":4,"featured_media":14800,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[244],"tags":[306,573,248],"class_list":["post-14822","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-klimat-och-miljo","tag-forskning","tag-gronlandsis","tag-klimat"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Kritiska l\u00e4gen f\u00f6r klimatet - Deep Sea Reporter<\/title>\n<meta name=\"description\" content=\"Jordens klimat \u00e4r n\u00e4ra flera tippningspunkter d\u00e4r utvecklingen blir o\u00e5terkallelig, med enorma konsekvenser f\u00f6r v\u00e5ra livsvillkor.Nu s\u00e4tter forskare hoppet till en annan sorts tr\u00f6skelpunkter \u2013 som kan f\u00e5 oss att snabbt \u00e4ndra beteende.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kritiska l\u00e4gen f\u00f6r klimatet - Deep Sea Reporter\" \/>\n<meta property=\"og:description\" content=\"Jordens klimat \u00e4r n\u00e4ra flera tippningspunkter d\u00e4r utvecklingen blir o\u00e5terkallelig, med enorma konsekvenser f\u00f6r v\u00e5ra livsvillkor.Nu s\u00e4tter forskare hoppet till en annan sorts tr\u00f6skelpunkter \u2013 som kan f\u00e5 oss att snabbt \u00e4ndra beteende.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\" \/>\n<meta property=\"og:site_name\" content=\"Deep Sea Reporter\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-26T13:58:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-11T10:59:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a003nh-1280x853-1.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"853\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Lena Scherman\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skriven av\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lena Scherman\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ber\u00e4knad l\u00e4stid\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minuter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\"},\"author\":{\"name\":\"Lena Scherman\",\"@id\":\"https:\/\/www.deepseareporter.com\/#\/schema\/person\/8440c67b5dda5c5ae6c70162fedbd434\"},\"headline\":\"Kritiska l\u00e4gen f\u00f6r klimatet\",\"datePublished\":\"2022-09-26T13:58:35+00:00\",\"dateModified\":\"2022-11-11T10:59:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\"},\"wordCount\":1219,\"publisher\":{\"@id\":\"https:\/\/www.deepseareporter.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.deepseareporter.com\/wp-content\/uploads\/2022\/10\/220926-ttvptippningspunkter-b6a67a8a-a003nh-1280x853-1.jpeg\",\"keywords\":[\"Forskning\",\"gr\u00f6nlandsis\",\"Klimat\"],\"articleSection\":[\"Klimat och Milj\u00f6\"],\"inLanguage\":\"sv-SE\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\",\"url\":\"https:\/\/www.deepseareporter.com\/sv\/kritiska-lagen-for-klimatet\/\",\"name\":\"Kritiska l\u00e4gen f\u00f6r klimatet - 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