{"id":403,"date":"2017-10-30T11:06:00","date_gmt":"2017-10-30T10:06:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellites_see_through_hurricanes\/"},"modified":"2026-10-08T00:27:46","modified_gmt":"2026-10-07T22:27:46","slug":"satellites_see_through_hurricanes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/satellites_see_through_hurricanes\/","title":{"rendered":"Satellitter kan se igennem orkaner!"},"content":{"rendered":"<div class=\"lede\">\n<p>Hidtil i \u00e5r har 10 orkaner h\u00e6rget over Atlanterhavet \u2013 det er f\u00f8rste gang i over 100 \u00e5r, at der har v\u00e6ret s\u00e5 mange i tr\u00e6k. At forst\u00e5, hvordan disse voldsomme storme opst\u00e5r, og at forudsige, hvor de vil bev\u00e6ge sig hen, er afg\u00f8rende for at redde menneskeliv. To Sentinel-satellitter fra ESA har bidraget til denne opgave.<\/p>\n<\/div>\n<p>Det er nyttigt at bruge satellitter i kredsl\u00f8b om Jorden til at fotografere orkaner set ovenfra. Men Sentinel-satellitterne har et s\u00e6rligt trick, der er endnu bedre. De er udstyret med h\u00f8jteknologiske radar-billeddannelsesanl\u00e6g, der kan overv\u00e5ge havisens udbredelse, spore olieudslip og endda se, hvordan landskabet \u00e6ndrer sig efter jordsk\u00e6lv. Forskere fra det tyske rumfartscenter har udviklet en ny radarbildeteknik, der g\u00f8r det muligt for Sentinel-satellitterne at se igennem orkaner og tage billeder af vandet under dem!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"Contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/10\/Hurricanes_are_very_dangerous_especially_if_they_reach_land\" data-licence=\"CC BY-SA 3.0 IGO or 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\/10\/hurricanes_are_very_dangerous_especially_if_they_reach_land\/17867785-3-eng-GB\/Hurricanes_are_very_dangerous_especially_if_they_reach_land.jpg\" alt=\"Hurricanes are very dangerous, especially if they reach land\"><figcaption>Orkaner er meget farlige, is\u00e6r hvis de rammer land<\/figcaption><\/figure>\n<p>Satellitterne var ikke udviklet til at observere orkaner, s\u00e5 det er imponerende, at forskerne har form\u00e5et at finde en ny m\u00e5de at udnytte teknologien p\u00e5. Takket v\u00e6re denne mulighed kan vi f\u00e5 indsigt i vindforholdene ved overfladen og b\u00f8lgeh\u00f8jderne lige under orkanerne. Det ville v\u00e6re utroligt farligt at sende folk ud i stormene i b\u00e5de for at indhente disse oplysninger. I stedet er det meget sikkert at bruge satellitter.<\/p>\n<p>De data, som Sentinels-satellitterne indsamler, giver forskerne mulighed for at forudsige, hvor \u00f8del\u00e6ggende en orkan vil v\u00e6re, og hvor den muligvis vil ramme landomr\u00e5der, hvor der bor mennesker. De samme oplysninger kan videregives til bes\u00e6tningerne p\u00e5 skibe i n\u00e6rheden af orkanerne, s\u00e5 de kan blive advaret om at holde sig p\u00e5 afstand.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1532\" data-credit=\"Contains modified Copernicus Sentinel data (2017), processed by DLR\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/10\/Radar_was_used_to_create_this_map_showing_how_high_the_waves_caused_by_hurricane_Irma_were\" 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\/10\/radar_was_used_to_create_this_map_showing_how_high_the_waves_caused_by_hurricane_irma_were\/18250916-2-eng-GB\/Radar_was_used_to_create_this_map_showing_how_high_the_waves_caused_by_hurricane_Irma_were.jpg\" alt=\"Radar was used to create this map showing how high the waves caused by hurricane Irma were\"><figcaption>Der blev anvendt radar til at udarbejde dette kort, der viser, hvor h\u00f8je b\u00f8lgerne for\u00e5rsaget af orkanen Irma var<\/figcaption><\/figure>\n<p>At kunne se igennem orkaner lyder som science fiction, men Sentinel-satellitterne har allerede anvendt denne teknik. I september ramte orkanen Irma Cuba og Florida Keys, hvilket f\u00f8rte til k\u00e6mpe b\u00f8lger p\u00e5 op til 10 meter. Sentinel-satellitterne kredsede over omr\u00e5det, hvor de overv\u00e5gede og indsamlede v\u00e6rdifulde oplysninger.<\/p>\n<p>Sentinel-satellitterne viser sig at v\u00e6re meget nyttige redskaber, der hj\u00e6lper os med at l\u00e6re mere om planeten Jorden og beskytte de mennesker, der bor p\u00e5 den.<\/p>\n<p><b>Sjovt faktum:<\/b> De to satellitter, der bruges til at se igennem orkaner, hedder Sentinel-1A og 1B. De er en del af en hel familie af Sentinel-satellitter, der kredser om Jorden og observerer den.<\/p>","protected":false},"excerpt":{"rendered":"<p>So far this year 10 hurricanes have raged across the Atlantic \u2013 the first time that there have been so many in a row in over 100 years. Understanding how [&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\/10\/the_sentinel-1_satellites_have_radar_vision\/17891613-2-eng-GB\/The_Sentinel-1_satellites_have_radar_vision.jpg","esa_banner_description":"The Sentinel-1 satellites have radar vision","esa_banner_credit":"ESA\/ATG medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/10\/The_Sentinel-1_satellites_have_radar_vision","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-403","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\/da\/wp-json\/wp\/v2\/posts\/403","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=403"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/403\/revisions"}],"predecessor-version":[{"id":4446,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/403\/revisions\/4446"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=403"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=403"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=403"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=403"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=403"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=403"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=403"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}