{"id":449,"date":"2017-09-20T20:24:07","date_gmt":"2017-09-20T20:24:07","guid":{"rendered":"http:\/\/80.85.86.254\/sjor\/?p=449"},"modified":"2024-10-21T18:03:54","modified_gmt":"2024-10-21T18:03:54","slug":"3-loftslagsbreytingar-og-surnun-sjavar","status":"publish","type":"post","link":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/2017\/09\/20\/3-loftslagsbreytingar-og-surnun-sjavar\/","title":{"rendered":"3. Loftslagsbreytingar og s\u00farnun sj\u00e1var"},"content":{"rendered":"<h4>3.1 Inngangur<\/h4>\n<p>Gr\u00f3\u00f0urh\u00fasa\u00e1hrifin sem ver\u00f0a vegna gr\u00f3\u00f0urh\u00fasalofttegunda \u00ed lofthj\u00fapnum eru n\u00e1tt\u00farulegt fyrirb\u00e6ri \u2013 \u00e1n \u00feeirra v\u00e6ri hitastig \u00e1 j\u00f6r\u00f0inni um 33\u00b0C l\u00e6gra en \u00fea\u00f0 er n\u00fa. Losun kold\u00edox\u00ed\u00f0s og annarra gr\u00f3\u00f0urh\u00fasalofttegunda af mannav\u00f6ldum veldur auknum styrk gr\u00f3\u00f0urh\u00fasalofttegunda \u00ed andr\u00famsloftinu og \u00fear me\u00f0 auknum gr\u00f3\u00f0urh\u00fasa\u00e1hrifum, loftslagsbreytingum og s\u00farnun sj\u00e1var. \u00deessi losun hefur \u00fev\u00ed gr\u00ed\u00f0armikil \u00e1hrif \u00e1 n\u00e1tt\u00faru og <span class=\"tooltips \" style=\"\" title=\"Vistkerfi er tilteki\u00f0 sv\u00e6\u00f0i me\u00f0 \u00feeim l\u00edfverum sem \u00fear lifa og \u00fev\u00ed umhverfi sem \u00fe\u00e6r b\u00faa vi\u00f0.\">vistkerfi<\/span>. Bar\u00e1ttan gegn loftslagsbreytingum er eitt umfangsmesta og mikilv\u00e6gasta verkefni sem mannkyni\u00f0 stendur frammi fyrir.<\/p>\n<p>Losun gr\u00f3\u00f0urh\u00fasalofttegunda hefur ekki a\u00f0eins \u00ed f\u00f6r me\u00f0 s\u00e9r a\u00f0 andr\u00famslofti\u00f0 \u00e1 j\u00f6r\u00f0inni hl\u00fdnar, heldur lei\u00f0ir losunin l\u00edka til hl\u00fdnunar sj\u00e1var. Losun kold\u00edox\u00ed\u00f0s veldur s\u00farnunar sj\u00e1var.<\/p>\n<p>R\u00edki heims hafa samm\u00e6lst um gr\u00edpa til a\u00f0ger\u00f0a sem munu tryggja a\u00f0 hitastigsh\u00e6kkun fr\u00e1 \u00fev\u00ed fyrir <span class=\"tooltips  bubblewidth_500 custom_m_bubble\" style=\"\" title=\"I\u00f0nbyltingin h\u00f3fst \u00ed kringum 1760 \u00feegar umskipti \u00e1ttu s\u00e9r sta\u00f0 \u00ed alls kyns framlei\u00f0slu, s.s. \u00ed text\u00edli\u00f0na\u00f0i, efnai\u00f0na\u00f0i og j\u00e1rni\u00f0na\u00f0i. \u00deessi umskipti f\u00f3lu m.a. \u00ed s\u00e9r a\u00f0 fari\u00f0 var a\u00f0 nota v\u00e9lar til fj\u00f6ldaframlei\u00f0slu og \u00fear spila\u00f0i gufuv\u00e9lin st\u00f3rt hlutverk. I\u00f0nbyltinginni hefur veri\u00f0 skipt \u00ed tv\u00f6 t\u00edmabil. Seinna t\u00edmabil i\u00f0nbyltingarinnar h\u00f3fst \u00ed lok 19. aldar me\u00f0 t\u00e6knin\u00fdjungum \u00ed st\u00e1li\u00f0na\u00f0i. \u00c1 sama t\u00edma var fari\u00f0 a\u00f0 nota jar\u00f0eldsneyti (einkum kol og ol\u00edu) \u00ed miklu meira m\u00e6li en \u00e1\u00f0ur haf\u00f0i veri\u00f0. \u00deegar tala\u00f0 er um hitastigsbreytingu fr\u00e1 \u00fev\u00ed fyrir i\u00f0nbyltingu er yfirleitt mi\u00f0a\u00f0 vi\u00f0 t\u00edmann \u00ed kringum 1880.\">i\u00f0nbyltingu<\/span> ver\u00f0i vel innan vi\u00f0 2\u00b0C og ennfremur a\u00f0 reyna a\u00f0 halda h\u00e6kkun hitastigs innan vi\u00f0 <span class=\"tooltips  bubblewidth_500 custom_m_bubble\" style=\"\" title=\"Allt kapp er lagt \u00e1 a\u00f0 takmarka hl\u00fdnun vi\u00f0 1,5\u00b0C.\">1,5\u00b0C<\/span>.\u00a0 Vi\u00f0 \u00e6tlum n\u00fana a\u00f0 l\u00edta \u00e1 \u00feetta mikilv\u00e6ga vi\u00f0fangsefni en byrjum \u00e1 a\u00f0 l\u00edta a\u00f0eins \u00e1 lofthj\u00fap jar\u00f0arinnar.<\/p>\n<div id=\"attachment_551\" style=\"width: 1410px\" class=\"wp-caption aligncenter\"><a href=\"\/mengunsjavar\/wp-content\/uploads\/intro_image.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-551\" class=\"wp-image-551 size-full\" src=\"\/mengunsjavar\/wp-content\/uploads\/intro_image.jpg\" alt=\"\" width=\"1400\" height=\"854\" srcset=\"https:\/\/himinnoghaf.is\/mengunsjavar\/wp-content\/uploads\/intro_image.jpg 1400w, https:\/\/himinnoghaf.is\/mengunsjavar\/wp-content\/uploads\/intro_image-300x183.jpg 300w, https:\/\/himinnoghaf.is\/mengunsjavar\/wp-content\/uploads\/intro_image-768x468.jpg 768w, https:\/\/himinnoghaf.is\/mengunsjavar\/wp-content\/uploads\/intro_image-1024x625.jpg 1024w\" sizes=\"auto, (max-width: 1400px) 100vw, 1400px\" \/><\/a><p id=\"caption-attachment-551\" class=\"wp-caption-text\">Mynd 3.1. Lofthj\u00fapur jar\u00f0ar s\u00e9st greinilega \u00e1 \u00feessari lj\u00f3smynd sem var tekin \u00ed Al\u00fej\u00f3\u00f0legu geimst\u00f6\u00f0inni.<\/p><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>3.1 Inngangur Gr\u00f3\u00f0urh\u00fasa\u00e1hrifin sem ver\u00f0a vegna gr\u00f3\u00f0urh\u00fasalofttegunda \u00ed lofthj\u00fapnum eru n\u00e1tt\u00farulegt fyrirb\u00e6ri \u2013 \u00e1n \u00feeirra v\u00e6ri hitastig \u00e1 j\u00f6r\u00f0inni um 33\u00b0C l\u00e6gra en \u00fea\u00f0 er n\u00fa. Losun kold\u00edox\u00ed\u00f0s og annarra gr\u00f3\u00f0urh\u00fasalofttegunda af mannav\u00f6ldum veldur auknum styrk gr\u00f3\u00f0urh\u00fasalofttegunda \u00ed andr\u00famsloftinu og <a class=\"more-link\" href=\"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/2017\/09\/20\/3-loftslagsbreytingar-og-surnun-sjavar\/\">Lesa meira&#8230;<\/a><\/p>\n","protected":false},"author":2,"featured_media":1014,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,24],"tags":[],"class_list":["post-449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-03-loftslagsbreytingarogsurnunsjavar","category-adal-kaflar"],"_links":{"self":[{"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/posts\/449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/comments?post=449"}],"version-history":[{"count":30,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/posts\/449\/revisions"}],"predecessor-version":[{"id":4021,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/posts\/449\/revisions\/4021"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/media\/1014"}],"wp:attachment":[{"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/media?parent=449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/categories?post=449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/himinnoghaf.is\/mengunsjavar\/index.php\/wp-json\/wp\/v2\/tags?post=449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}