{"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\/sv\/esa_satellite_prepares_for_water_watch\/","title":{"rendered":"ESA-satellit f\u00f6rbereder sig f\u00f6r vatten\u00f6vervakning"},"content":{"rendered":"
\n

F\u00f6r en f\u00f6rbipasserande utomjording skulle jorden framst\u00e5 som en vattenv\u00e4rld, till stor del t\u00e4ckt av hav och moln. Utan denna dyrbara v\u00e4tska skulle det inte finnas n\u00e5got liv p\u00e5 jorden. Det finns dock fortfarande mycket vi inte vet om planetens vatten och dess inverkan p\u00e5 v\u00e4der och klimat. ESAs n\u00e4sta Earth Explorer-uppdrag, k\u00e4nt som SMOS, f\u00f6rv\u00e4ntas ge n\u00e5gra svar.<\/p>\n<\/div>\n

Vatten \u00e4r det enda naturliga \u00e4mnet som kan f\u00f6rekomma p\u00e5 jorden i form av gas, v\u00e4tska eller fast \u00e4mne. N\u00e4r vattnet v\u00e4rms upp av solen avdunstar det och f\u00f6rvandlas till gas (vatten\u00e5nga). Denna gas stiger upp\u00e5t och kyls ned, vilket bildar moln och regn. Regnet faller tillbaka till jordytan och fullbordar d\u00e4rmed vattenkretsloppet.<\/p>\n

\"SMOS<\/figure>\n

\u00c4ven om den st\u00f6rsta delen av vatten\u00e5ngan kommer fr\u00e5n haven, frig\u00f6rs ungef\u00e4r en tiondel av v\u00e4xter och genom avdunstning fr\u00e5n marken. Om marken blir f\u00f6r fuktig kan det dock leda till \u00f6versv\u00e4mningar och jorderosion. F\u00f6r lite fukt och marken f\u00f6rvandlas till en \u00f6ken. F\u00f6r n\u00e4rvarande finns det f\u00e5 m\u00e4tningar av markfuktigheten, men detta kommer att f\u00f6r\u00e4ndras i och med lanseringen av SMOS.<\/p>\n

Satelliten kommer ocks\u00e5 att m\u00e4ta salthalten i haven och leta efter omr\u00e5den som \u00e4r betydligt saltare och d\u00e4rmed har h\u00f6gre densitet. S\u00e5dana skillnader p\u00e5verkar havsstr\u00f6mmarna, vilket i sin tur p\u00e5verkar v\u00e4der och klimat.<\/p>\n

SMOS \u00e4r utrustad med ett specialinstrument f\u00f6r att m\u00e4ta b\u00e5de markfuktighet och havets salthalt. 69 mottagare p\u00e5 Y-formade armar kommer att m\u00e4ta mikrov\u00e5gsstr\u00e5lning fr\u00e5n ytan. De kommer att kunna uppt\u00e4cka markfuktighet p\u00e5 s\u00e5 lite som 4% \u2013 vilket motsvarar en tesked vatten i en handfull torr jord. Under ett tre\u00e5rigt uppdrag kommer satelliten att skapa de f\u00f6rsta globala kartorna \u00f6ver markfuktighet och havets salthalt som tagits fram fr\u00e5n rymden.<\/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\/sv\/wp-json\/wp\/v2\/posts\/1081","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=1081"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1081\/revisions"}],"predecessor-version":[{"id":4840,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1081\/revisions\/4840"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1081"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1081"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1081"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1081"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1081"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1081"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1081"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}