{"id":447,"date":"2017-05-17T10:13:00","date_gmt":"2017-05-17T08:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/satnav_technology_could_save_precious_water\/"},"modified":"2026-10-08T00:28:19","modified_gmt":"2026-10-07T22:28:19","slug":"satnav_technology_could_save_precious_water","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/satnav_technology_could_save_precious_water\/","title":{"rendered":"GPS-tekniken kan spara dyrbart vatten"},"content":{"rendered":"<div class=\"lede\">\n<p>En grupp jordbrukare i USA st\u00e5r inf\u00f6r ett problem: i m\u00e5nga \u00e5r har de anv\u00e4nt stora m\u00e4ngder vatten f\u00f6r att odla gr\u00f6dor p\u00e5 vidstr\u00e4ckta \u00e5krar, men nu h\u00e5ller vattenresurserna p\u00e5 att ta slut. Hj\u00e4lp kan komma fr\u00e5n en spin-off-teknik fr\u00e5n ESA som skulle kunna bidra till att bevara vattenresurserna, samtidigt som man ser till att gr\u00f6dorna inte lider brist p\u00e5 vatten!<\/p>\n<\/div>\n<p>Id\u00e9n kommer fr\u00e5n en f\u00f6re detta ESA-anst\u00e4lld vid namn Javier Marti. Han ins\u00e5g att vissa \u00e5krar vattnas f\u00f6r mycket, vilket \u00e4r ett stort sl\u00f6seri. Skulle det g\u00e5 att anv\u00e4nda satelliter f\u00f6r att se vilka \u00e5krar som verkligen beh\u00f6ver vatten? Javier tror det!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1180\" data-credit=\"Google Earth\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/Circular_fields_as_seen_from_space\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/05\/circular_fields_as_seen_from_space\/17903122-2-eng-GB\/Circular_fields_as_seen_from_space.jpg\" alt=\"Circular fields as seen from space\"><figcaption>Cirkul\u00e4ra f\u00e4lt sedda fr\u00e5n rymden<\/figcaption><\/figure>\n<p>Satelliter som kretsar kring jorden, och som vanligtvis anv\u00e4nds f\u00f6r att hj\u00e4lpa m\u00e4nniskor att hitta v\u00e4gen med hj\u00e4lp av GPS-system, \u00e4r nyckeln. Genom att analysera reflekterade GPS-signaler uppt\u00e4ckte Javier att det g\u00e5r att m\u00e4ta hur mycket vatten som finns p\u00e5 marken nedanf\u00f6r: i jord, sn\u00f6, v\u00e5tmarker och till och med vattenniv\u00e5erna i reservoarer. Dessa signaler kan avsl\u00f6ja vilka \u00e5krar som beh\u00f6ver bevattnas och vilka som klarar sig som de \u00e4r.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"Divirod\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/Irrigation_systems_like_this_sprinkle_water_over_fields\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/05\/irrigation_systems_like_this_sprinkle_water_over_fields\/18248067-2-eng-GB\/Irrigation_systems_like_this_sprinkle_water_over_fields.jpg\" alt=\"Irrigation systems like this sprinkle water over fields\"><figcaption>Bevattningssystem som detta sprider vatten \u00f6ver \u00e5krarna<\/figcaption><\/figure>\n<p>Under de kommande m\u00e5naderna kommer flera jordbrukare att anv\u00e4nda dessa uppgifter f\u00f6r att reglera hur mycket vatten de vattnar sina \u00e5krar med. F\u00f6rhoppningen \u00e4r att denna effektivare metod ska spara 30% av den vattenm\u00e4ngd de normalt anv\u00e4nder. Som en extra bonus kan gr\u00f6dorna kanske v\u00e4xa \u00e4nnu b\u00e4ttre eftersom de f\u00e5r precis r\u00e4tt m\u00e4ngd vatten!<\/p>\n<p>Om Javiers id\u00e9 fungerar skulle den kunna anv\u00e4ndas \u00f6ver hela v\u00e4rlden f\u00f6r att bidra till att spara vatten \u2013 allt tack vare satelliter som redan befinner sig i omloppsbana runt jorden.<\/p>\n<p><b>Rolig fakta:<\/b> Att analysera reflekterade GPS-signaler \u00e4r en banbrytande teknik, och under de n\u00e4rmaste \u00e5ren kommer vi kanske att f\u00e5 se m\u00e5nga fler till\u00e4mpningar f\u00f6r den!<\/p>","protected":false},"excerpt":{"rendered":"<p>A group of farmers in the USA have a problem: for many years they have been using large amounts of water to grow crops in huge fields, but now their [&hellip;]<\/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\/2017\/05\/farmers_need_a_lot_of_water_for_their_crops\/17880698-2-eng-GB\/Farmers_need_a_lot_of_water_for_their_crops.jpg","esa_banner_description":"Farmers need a lot of water for their crops","esa_banner_credit":"Navtronics BVBA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/Farmers_need_a_lot_of_water_for_their_crops","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-447","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/447","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=447"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/447\/revisions"}],"predecessor-version":[{"id":4483,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/447\/revisions\/4483"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=447"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=447"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=447"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=447"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=447"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=447"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=447"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}