{"id":995,"date":"2007-06-13T09:10:00","date_gmt":"2007-06-13T07:10:00","guid":{"rendered":"https:\/\/kids.esa.int\/envisat_guides_polar_explorers_to_safety\/"},"modified":"2026-10-08T00:34:39","modified_gmt":"2026-10-07T22:34:39","slug":"envisat_guides_polar_explorers_to_safety","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/envisat_guides_polar_explorers_to_safety\/","title":{"rendered":"Envisat leder polarforskere i sikkerhed"},"content":{"rendered":"
\n

Den 1. marts 2007 begav Alain Hubert og Dixie Dansercoer sig ud p\u00e5 en bem\u00e6rkelsesv\u00e6rdig ekspedition, hvor de skulle vandre fra Sibirien til Gr\u00f8nland. Tre m\u00e5neder senere, efter mange farer og n\u00e6rkatastrofer, n\u00e6rmer deres 2.000 km lange vandring gennem den iskolde vildmark sig sin afslutning, takket v\u00e6re Envisat, ESA\u2019s \u00f8je i kredsl\u00f8b.<\/p>\n<\/div>\n

I starten gik alt godt, trods de ekstremt barske, farlige og fysisk kr\u00e6vende forhold. Men da de to belgiske opdagelsesrejsende n\u00e6rmede sig den gr\u00f8nlandske kyst, begyndte havisen uventet at bryde op. De to havde intet andet valg end at fors\u00f8ge at finde en vej uden om de store \u00e5bne vandstr\u00e6kninger.<\/p>\n

\"Sea
Havis i Nares-str\u00e6det mellem Gr\u00f8nland og Canada<\/figcaption><\/figure>\n

Heldigvis kunne de regne med st\u00f8tte fra to instrumenter ombord p\u00e5 Envisat \u2013 allvejrsradarsensoren og det optiske MERIS-instrument. Ved n\u00f8je at unders\u00f8ge satellitbilleder af de skiftende isforhold kunne Leif Toudal Pedersen (Danmarks Rumcenter) hj\u00e6lpe opdagelsesrejsende med at undg\u00e5 den ismasse, der var i f\u00e6rd med at g\u00e5 hurtigt i opl\u00f8sning.<\/p>\n

Holdet befinder sig nu p\u00e5 stabil is. Med mindre end 50 km tilbage kan de se Gr\u00f8nland tydeligt forude. De modige opdagelsesrejsende forventes at n\u00e5 m\u00e5let for deres lange vandring tv\u00e6rs over hele det arktiske bassin i denne uge.<\/p>\n

Deres strabadserende rejse over det isd\u00e6kkede Arktiske Ocean, kendt som \u00bbArctic Arc Expedition\u00ab, er en af de mange videnskabelige aktiviteter, der finder sted i forbindelse med Det Internationale Polar\u00e5r. De to erfarne polarforskere var is\u00e6r interesserede i at indsamle data om snedybden. Disse oplysninger vil blive brugt til forberedelsen af ESA\u2019s CryoSat-2-mission, som skal sendes i kredsl\u00f8b i 2009.<\/p>","protected":false},"excerpt":{"rendered":"

On 1 March 2007, Alain Hubert and Dixie Dansercoer set off on a remarkable expedition to walk from Siberia to Greenland. Three months later, after many dangers and near-disasters, their […]<\/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\/2007\/06\/struggling_over_rough_sea-ice_during_the_arctic_arc_expedition2\/17906237-2-eng-GB\/Struggling_over_rough_sea-ice_during_the_Arctic_Arc_expedition.jpg","esa_banner_description":"Struggling over rough sea-ice during the Arctic Arc expedition","esa_banner_credit":"Arctic Arc 2007 - International Polar Foundation","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/06\/Struggling_over_rough_sea-ice_during_the_Arctic_Arc_expedition2","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-995","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\/995","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=995"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/995\/revisions"}],"predecessor-version":[{"id":4786,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/995\/revisions\/4786"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=995"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=995"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=995"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=995"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=995"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=995"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=995"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}