{"id":1123,"date":"2004-12-03T10:13:00","date_gmt":"2004-12-03T09:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/how_do_we_observe_the_earth\/"},"modified":"2026-10-08T00:36:15","modified_gmt":"2026-10-07T22:36:15","slug":"how_do_we_observe_the_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/how_do_we_observe_the_earth\/","title":{"rendered":"Hur observerar vi jorden?"},"content":{"rendered":"
\n

Under m\u00e5nga \u00e5rhundraden var det enda s\u00e4ttet att f\u00e5 en bra \u00f6verblick \u00f6ver ett stort omr\u00e5de att ta sig upp till h\u00f6gre h\u00f6jd. Sedan underl\u00e4ttade uppfinningen av ballonger och flygplan jordobservation avsev\u00e4rt.<\/p>\n<\/div>\n

Under rymd\u00e5ldern har satelliter anv\u00e4nts i allt st\u00f6rre utstr\u00e4ckning f\u00f6r att studera alla aspekter av v\u00e5r planet.<\/p>\n

Eftersom de observerar jorden fr\u00e5n l\u00e5ngt h\u00e5ll kallas de ofta f\u00f6r \u201cfj\u00e4rranalyssatelliter\u201d.<\/p>\n

De mest detaljerade bilderna av jordytan och atmosf\u00e4ren skickas tillbaka av satelliter i l\u00e5ga omloppsbanor som tar dem \u00f6ver nord- och sydpolerna.<\/p>\n

N\u00e4r jorden roterar under dem kan dessa satelliter avbilda hela planeten \u2013 remsa f\u00f6r remsa \u2013 med n\u00e5gra dagars mellanrum.<\/p>\n

\"Envisat,
Envisat, konstn\u00e4rlig tolkning<\/figcaption><\/figure>\n

Satelliter i pol\u00e4ra banor kartl\u00e4gger is- och sn\u00f6t\u00e4cket, markanv\u00e4ndningen, luft- och vattenf\u00f6roreningar samt det lokala v\u00e4dret. ESA:s pol\u00e4ra satelliter \u00e4r den europeiska fj\u00e4rranalyssatelliten (ERS-2) och milj\u00f6satelliten Envisat.<\/p>\n

Andra rymdfarkoster riktar hela tiden blicken mot samma del av jorden n\u00e4r de kretsar 36 000 km ovanf\u00f6r ekvatorn. Detta ger dem en bredare vy, men inneb\u00e4r att de inte kan se jorden i lika stor detalj.<\/p>\n

Europa har hittills skickat upp \u00e5tta v\u00e4dersatelliter, kallade Meteosat, till denna typ av \u201cgeostation\u00e4r\u201d bana.<\/p>","protected":false},"excerpt":{"rendered":"

For many centuries, the only way to obtain a good view of a large area was to climb to higher ground. Then the invention of balloons and aircraft made Earth […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2004\/07\/the_world_seen_by_envisat_s_meris2\/17870967-2-eng-GB\/The_world_seen_by_Envisat_s_MERIS.jpg","esa_banner_description":"The world seen by Envisat 's MERIS","esa_banner_credit":"ESA 2004","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/07\/The_world_seen_by_Envisat_s_MERIS2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[42,10,59],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1123","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1123","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=1123"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1123\/revisions"}],"predecessor-version":[{"id":4859,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1123\/revisions\/4859"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1123"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1123"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1123"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1123"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1123"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1123"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1123"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}