{"id":41966,"date":"2018-12-25T08:37:37","date_gmt":"2018-12-25T13:37:37","guid":{"rendered":"https:\/\/olduvai.ca\/?p=41966"},"modified":"2018-12-25T08:37:52","modified_gmt":"2018-12-25T13:37:52","slug":"rising-sea-levels-by-how-much-and-why-a-current-commentary","status":"publish","type":"post","link":"https:\/\/olduvai.ca\/?p=41966","title":{"rendered":"Rising Sea Levels \u2013 by How Much, and Why? A Current Commentary."},"content":{"rendered":"<h3><a href=\"http:\/\/ergobalance.blogspot.com\/2018\/11\/rising-sea-levels-by-how-much-and-why.html\">Rising Sea Levels \u2013 by How Much, and Why? A Current Commentary.<\/a><\/h3>\n<p>The following was published in the journal <a href=\"http:\/\/www.ingentaconnect.com\/content\/stl\/sciprg\">Science Progress<\/a> recently, of which I am an editor. Since this blog typically covers issues of environment and energy, I am including the present topic, which I hope will be of interest to its regular readers, and indeed to anyone else with concerns about the direction of &#8220;the changing climate&#8221;.<\/p>\n<p><strong>Introduction.<\/strong><\/p>\n<p>The term \u201csea level rise\u201d normally refers to an increase in the global mean sea level (GMSL), caused by an increase in the volume of water in the Earth\u2019s oceans, primarily as a result of thermal expansion, the addition of further water \u00a0from the melting of land-based ice sheets and glaciers, and \u00a0to a \u00a0smaller degree from changes in land-water storage, including the transfer of groundwater that has been pumped from aquifers<sup>1<\/sup>. As measured on the local scale (Section 4), sea levels may be higher or lower than the <em>global mean<\/em> value, as a result of various factors, including land subsidence, glacial rebound, tectonic effects, and the influence of currents, local temperatures, winds, tides, storms, and variations in \u00a0local barometric pressure<sup>2<\/sup> among \u00a0the particular locations where the measurements are \u00a0being made. There is strong evidence that the GMSL is increasing, and as a result of long response times from various components of the climate system, this \u00a0process may continue over the course of centuries<sup>3<\/sup>. It has been estimated that more than half of the observed sea level rise during the 20<sup>th<\/sup>century was due to global warming<sup>4<\/sup>. According to satellite altimetry measurements, the GMSL is currently<sup>5,6<\/sup> increasing by 3.2 \u00b1 0.4 mm yr<sup>-1<\/sup>, which is about double the rate determined to have prevailed throughout the 20<sup>th<\/sup> century<sup>6<\/sup>,&#8230;<\/p>\n<p>\u2026click on the above link to read the rest of the article\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rising Sea Levels \u2013 by How Much, and Why? A Current Commentary. The following was published in the journal Science Progress recently, of which I am an editor. Since this blog typically covers issues of environment and energy, I am including the present topic, which I hope will be of interest to its regular readers, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4],"tags":[113,18689,140,141,8604,23603,386,8505,7670,7566,23602,23605,23604],"class_list":["post-41966","post","type-post","status-publish","format-standard","hentry","category-environment","tag-carbon-emissions","tag-chris-rhodes","tag-climate","tag-climate-change","tag-energy-balance","tag-global-mean-sea-level","tag-greenhouse-gases","tag-ice-melt","tag-ocean-levels","tag-rising-sea-levels","tag-science-progress","tag-thermal-expansion","tag-water-volume"],"_links":{"self":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/41966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41966"}],"version-history":[{"count":1,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/41966\/revisions"}],"predecessor-version":[{"id":41967,"href":"https:\/\/olduvai.ca\/index.php?rest_route=\/wp\/v2\/posts\/41966\/revisions\/41967"}],"wp:attachment":[{"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olduvai.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}