{"id":90530,"date":"2026-06-26T13:14:47","date_gmt":"2026-06-26T11:14:47","guid":{"rendered":""},"modified":"2026-06-26T13:31:42","modified_gmt":"2026-06-26T11:31:42","slug":"0198cc634423-fa3ea26a-68a6-48f6-96db-632f5a35e552","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/0198cc634423-fa3ea26a-68a6-48f6-96db-632f5a35e552\/","title":{"rendered":"Modulation of the Aleutian\u2013Icelandic low seesaw and its surface impacts by the Atlantic Multidecadal Oscillation"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Early studies suggested that the Aleutian\u2013Icelandic low seesaw (AIS) features multidecadal variation. In this study, the multidecadal modulation of the AIS and associated surface climate by the Atlantic Multidecadal Oscillation (AMO) during late winter (February\u2013March) is explored with observational data. It is shown that, in the cold phase of the AMO (AMO|\u2212), a clear AIS is established, while this is not the case in the warm phase of the AMO (AMO|+). The surface climate over Eurasia is significantly influenced by the AMO\u2019s modulation of the Aleutian low (AL). For example, the weak AL in AMO|\u2212 displays warmer surface temperatures over the entire Far East and along the Russian Arctic coast and into Northern Europe, but only over the Russian Far East in AMO|+. Similarly, precipitation decreases over central Europe with the weak AL in AMO|\u2212, but decreases over northern Europe and increases over southern Europe in AMO|+. The mechanism underlying the influence of AMO|\u2212 on the AIS can be described as follows: AMO|\u2212 weakens the upward component of the Eliassen\u2013Palm flux along the polar waveguide by reducing atmospheric blocking occurrence over the Euro\u2013Atlantic sector, and hence drives an enhanced stratospheric polar vortex. With the intensified polar night jet, the wave trains originating over the central North Pacific can propagate horizontally through North America and extend into the North Atlantic, favoring an eastward-extended Pacific\u2013North America\u2013Atlantic pattern, and resulting in a significant AIS at the surface during late winter.<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-06-26 13:14:47","footnotes":""},"nva_tax_category":[1059],"class_list":["post-90530","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-scientific-journal-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/90530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":1,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/90530\/revisions"}],"predecessor-version":[{"id":90531,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/90530\/revisions\/90531"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=90530"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=90530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}