{"id":3413,"date":"2025-09-04T03:04:15","date_gmt":"2025-09-04T01:04:15","guid":{"rendered":"https:\/\/arcticwatch.info\/index.php\/2025\/09\/04\/facts-about-the-arctic-in-september-2025\/"},"modified":"2025-09-08T07:07:29","modified_gmt":"2025-09-08T05:07:29","slug":"facts-about-the-arctic-in-september-2025","status":"publish","type":"post","link":"https:\/\/arcticwatch.info\/index.php\/2025\/09\/04\/facts-about-the-arctic-in-september-2025\/","title":{"rendered":"Facts About the Arctic in September 2025"},"content":{"rendered":"<div>\n<p>At the beginning of last month <a href=\"https:\/\/ads.nipr.ac.jp\/vishop\/#\/extent\/\" target=\"_blank\" rel=\"noreferrer noopener\">JAXA\/ViSHOP extent<\/a>\u00a0was third lowest for the date in the satellite era. With the date of the 2025 minimum extent rapidly approaching that is no longer the case:<\/p>\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36338\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02-1024x472-1.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02-1024x472-1.png 1024w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02-300x138.png 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02-768x354.png 768w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/JAXA-Extent-2025-09-02.png 1106w\" alt=\"\" width=\"1024\" height=\"472\" \/><\/a><\/figure>\n<p>Whilst JAXA extent is now 10th lowest, PIOMAS volume remains second lowest for the date:<\/p>\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-volume_on_2025-08-31.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36339\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-volume_on_2025-08-31.png\" sizes=\"auto, (max-width: 888px) 100vw, 888px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-volume_on_2025-08-31.png 888w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/PIOMAS-volume_on_2025-08-31-300x216.png 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/PIOMAS-volume_on_2025-08-31-768x554.png 768w\" alt=\"\" width=\"888\" height=\"640\" \/><\/a><\/figure>\n<p>Here\u2019s the associated thickness map. Note the change of scale from last month<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-thickness_on_2025-08-31.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36340\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-thickness_on_2025-08-31.png\" sizes=\"auto, (max-width: 880px) 100vw, 880px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/PIOMAS-thickness_on_2025-08-31.png 880w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/PIOMAS-thickness_on_2025-08-31-300x196.png 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/PIOMAS-thickness_on_2025-08-31-768x503.png 768w\" alt=\"\" width=\"880\" height=\"576\" \/><\/a><\/figure>\n<\/div>\n<p>Compare and contrast that map with the AWI\u2019s sea ice concentration map, particularly in the Beaufort Sea area:<\/p>\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36343\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902-1024x919-1.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902-1024x919-1.png 1024w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902-300x269.png 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902-768x689.png 768w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902-1536x1378.png 1536w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/SIC-LEADS_20250902.png 1720w\" alt=\"\" width=\"1024\" height=\"919\" \/><\/a><\/figure>\n<p>Also compare those two with the NSIDC\u2019s MASIE extent map:<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36341\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02-1024x986-1.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02-1024x986-1.png 1024w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02-300x289.png 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02-768x739.png 768w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/MASIE-Map-2025-09-02.png 1172w\" alt=\"\" width=\"1024\" height=\"986\" \/><\/a><\/figure>\n<\/div>\n<p>For a fourth opinion on where sea ice cover remains in the Beaufort Sea, see also the the <a href=\"https:\/\/www.canada.ca\/en\/environment-climate-change\/services\/ice-forecasts-observations\/latest-conditions.html\" target=\"_blank\" rel=\"noreferrer noopener\">Canadian Ice Service<\/a>\u2018s latest concentration chart:<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36344\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901-1024x790-1.jpg\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901-1024x790-1.jpg 1024w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901-300x231.jpg 300w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901-768x592.jpg 768w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/West-Conc-20250901.jpg 1258w\" alt=\"\" width=\"1024\" height=\"790\" \/><\/a><\/figure>\n<\/div>\n<p>Evidently the choice of satellite sensors and data processing algorithms can result in a big difference in the calculated sea ice extent!<\/p>\n<p>The pale pink areas on another CIS chart, this time showing the ice \u201cstage of development\u201d, reveal that the refreeze has begun in the Nares Strait and Nansen Sound:<\/p>\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36345\" src=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901-878x1024-1.jpg\" sizes=\"auto, (max-width: 878px) 100vw, 878px\" srcset=\"https:\/\/arcticwatch.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901-878x1024-1.jpg 878w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901-257x300.jpg 257w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901-768x896.jpg 768w, https:\/\/greatwhitecon.info\/wp-content\/uploads\/2025\/09\/East-SoD-20250901.jpg 932w\" alt=\"\" width=\"878\" height=\"1024\" \/><\/a><\/figure>\n<p>Of course at lower latitudes the ice is still melting, including in the Beaufort Sea, so\u2026<\/p>\n<p>Watch this space!<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>At the beginning of last month JAXA\/ViSHOP extent\u00a0was third lowest for the date in the satellite era.<\/p>\n","protected":false},"author":2,"featured_media":3414,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analysis"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/posts\/3413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/comments?post=3413"}],"version-history":[{"count":1,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/posts\/3413\/revisions"}],"predecessor-version":[{"id":3422,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/posts\/3413\/revisions\/3422"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/media\/3414"}],"wp:attachment":[{"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/media?parent=3413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/categories?post=3413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arcticwatch.info\/index.php\/wp-json\/wp\/v2\/tags?post=3413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}