{"id":1081,"date":"2009-10-30T10:28:00","date_gmt":"2009-10-30T09:28:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_satellite_prepares_for_water_watch\/"},"modified":"2026-10-08T00:35:47","modified_gmt":"2026-10-07T22:35:47","slug":"esa_satellite_prepares_for_water_watch","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/esa_satellite_prepares_for_water_watch\/","title":{"rendered":"ESA-satellit g\u00f8r sig klar til at overv\u00e5ge vandforholdene"},"content":{"rendered":"
\n

For en forbipasserende rumv\u00e6sen ville Jorden fremst\u00e5 som en vandverden, der i vid udstr\u00e6kning er d\u00e6kket af hav og skyer. Uden denne dyrebare v\u00e6ske ville der ikke v\u00e6re liv p\u00e5 Jorden. Der er dog stadig meget, vi ikke ved om planetens vand og dets indflydelse p\u00e5 vejr og klima. ESAs n\u00e6ste Earth Explorer-mission, kendt som SMOS, forventes at give nogle svar.<\/p>\n<\/div>\n

Vand er det eneste naturlige stof, der kan forekomme p\u00e5 Jorden som gas, v\u00e6ske eller fast stof. N\u00e5r det opvarmes af solen, fordamper vandet og bliver til gas (vanddamp). Denne gas stiger op og afk\u00f8les, hvorved der dannes skyer og regn. Regnen falder tilbage til jordoverfladen og fuldender dermed vandkredsl\u00f8bet.<\/p>\n

\"SMOS<\/figure>\n

Selvom det meste af vanddampen stammer fra havene, frigives omkring en tiendedel af planter og gennem fordampning fra jorden. Bliver jorden imidlertid for v\u00e5d, kan det f\u00f8re til oversv\u00f8mmelser og jorderosion. Er der for lidt fugt, forvandles landet til en \u00f8rken. I \u00f8jeblikket findes der kun f\u00e5 m\u00e5linger af jordfugtighed, men det er ved at \u00e6ndre sig med lanceringen af SMOS.<\/p>\n

Satellitten vil ogs\u00e5 m\u00e5le havets saltholdighed og lede efter omr\u00e5der, der er betydeligt mere salte og dermed har en h\u00f8jere massefylde. S\u00e5danne forskelle p\u00e5virker havstr\u00f8mmene, som igen har indflydelse p\u00e5 vejret og klimaet.<\/p>\n

SMOS er udstyret med et specielt instrument til m\u00e5ling af b\u00e5de jordfugtighed og havets saltholdighed. 69 modtagere p\u00e5 Y-formede arme vil m\u00e5le mikrob\u00f8lgestr\u00e5ling fra overfladen. De vil kunne registrere en jordfugtighed p\u00e5 helt ned til 4% \u2013 svarende til en teskefuld vand i en h\u00e5ndfuld t\u00f8r jord. I l\u00f8bet af en tre\u00e5rig mission vil den udarbejde de f\u00f8rste globale kort over jordfugtighed og havets saltholdighed, der er udarbejdet fra rummet.<\/p>","protected":false},"excerpt":{"rendered":"

To a passing alien, Earth would appear as a water world, largely covered by oceans and clouds. Without this precious liquid, life on Earth would not exist. However, there is […]<\/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\/2009\/09\/smos_in_orbit2\/18245588-2-eng-GB\/SMOS_in_orbit.jpg","esa_banner_description":"SMOS in orbit","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/09\/SMOS_in_orbit2","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":[42,10,66],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1081","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=1081"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1081\/revisions"}],"predecessor-version":[{"id":4840,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1081\/revisions\/4840"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1081"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1081"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1081"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1081"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1081"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1081"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1081"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}