{"id":658,"date":"2019-12-13T16:32:41","date_gmt":"2019-12-13T20:32:41","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/aomip\/?page_id=658"},"modified":"2021-06-18T09:18:57","modified_gmt":"2021-06-18T13:18:57","slug":"time-step","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/aomip\/models\/details\/time-step\/","title":{"rendered":"Time step"},"content":{"rendered":"\n\n\t<h1>Time step<\/h1>\n\n<table id=\"tablepress-7\" class=\"tablepress tablepress-id-7 tablepress-responsive\">\n<thead>\n<tr class=\"row-1 odd\">\n\t<th class=\"column-1\"><p>code<\/p><\/th><th class=\"column-2\"><p>types<\/p><\/th><th class=\"column-3\"><p>ocean momentum Dt<\/p><\/th><th class=\"column-4\"><p>ocean tracer Dt<\/p><\/th><th class=\"column-5\"><p>sea ice Dt<\/p><\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-2 even\">\n\t<td class=\"column-1\"><p>AWI<\/p><\/td><td class=\"column-2\"><p>LF<\/p><\/td><td class=\"column-3\"><p>900s<\/p><\/td><td class=\"column-4\"><p>900s<\/p><\/td><td class=\"column-5\"><p>900s<\/p><\/td>\n<\/tr>\n<tr class=\"row-3 odd\">\n\t<td class=\"column-1\"><p>GSFC<\/p><\/td><td class=\"column-2\"><p>LF<\/p><\/td><td class=\"column-3\"><p>720s<\/p><\/td><td class=\"column-4\"><p>720s<\/p><\/td><td class=\"column-5\"><p>720s<\/p><\/td>\n<\/tr>\n<tr class=\"row-4 even\">\n\t<td class=\"column-1\"><p>\u00a0DRAKKAR<\/p><\/td><td class=\"column-2\"><p>\u00a0LF+Asselin<\/p><\/td><td class=\"column-3\"><p>\u00a01440s<\/p><\/td><td class=\"column-4\"><p>\u00a01440s<\/p><\/td><td class=\"column-5\"><p>\u00a07200s<\/p><\/td>\n<\/tr>\n<tr class=\"row-5 odd\">\n\t<td class=\"column-1\"><p>ICMMG<\/p><\/td><td class=\"column-2\"><p>split<\/p><\/td><td class=\"column-3\"><p>14400s<\/p><\/td><td class=\"column-4\"><p>14400s<\/p><\/td><td class=\"column-5\"><p>10800s<\/p><\/td>\n<\/tr>\n<tr class=\"row-6 even\">\n\t<td class=\"column-1\"><p>LANL<\/p><\/td><td class=\"column-2\"><p>LF + F<\/p><\/td><td class=\"column-3\"><p>1800s<\/p><\/td><td class=\"column-4\"><p>1800s<\/p><\/td><td class=\"column-5\"><p>1800s + 15s<\/p><\/td>\n<\/tr>\n<tr class=\"row-7 odd\">\n\t<td class=\"column-1\"><p>LU<\/p><\/td><td class=\"column-2\"><p>LF + PC + F<\/p><\/td><td class=\"column-3\"><p>21600s *<\/p><\/td><td class=\"column-4\"><p>21600s<\/p><\/td><td class=\"column-5\"><p>21600s<\/p><\/td>\n<\/tr>\n<tr class=\"row-8 even\">\n\t<td class=\"column-1\"><p>NERSC<\/p><\/td><td class=\"column-2\"><p>filtered LF<\/p><\/td><td class=\"column-3\"><p>1600s<\/p><\/td><td class=\"column-4\"><p>1600s<\/p><\/td><td class=\"column-5\"><p>1600s**<\/p><\/td>\n<\/tr>\n<tr class=\"row-9 odd\">\n\t<td class=\"column-1\"><p>NPS<\/p><\/td><td class=\"column-2\"><p>LF + F<\/p><\/td><td class=\"column-3\"><p>1200s<\/p><\/td><td class=\"column-4\"><p>1200s<\/p><\/td><td class=\"column-5\"><p>7200s<\/p><\/td>\n<\/tr>\n<tr class=\"row-10 even\">\n\t<td class=\"column-1\"><p>NYU<\/p><\/td><td class=\"column-2\"><p>filtered LF<\/p><\/td><td class=\"column-3\"><p>7200s + 1200s<\/p><\/td><td class=\"column-4\"><p>7200s<\/p><\/td><td class=\"column-5\"><p>7200s<\/p><\/td>\n<\/tr>\n<tr class=\"row-11 odd\">\n\t<td class=\"column-1\"><p>POL<\/p><\/td><td class=\"column-2\"><p>LF+Asselin+EE+IE<\/p><\/td><td class=\"column-3\"><p>1440s + 239s<\/p><\/td><td class=\"column-4\"><p>43200s<\/p><\/td><td class=\"column-5\"><p>43200s<\/p><\/td>\n<\/tr>\n<tr class=\"row-12 even\">\n\t<td class=\"column-1\"><p>FEMAO1<\/p><\/td><td class=\"column-2\"><p>IE + EE   + PC<\/p><\/td><td class=\"column-3\"><p>7200s<\/p><\/td><td class=\"column-4\"><p>7200s<\/p><\/td><td class=\"column-5\"><p>7200s +   60s ***<\/p><\/td>\n<\/tr>\n<tr class=\"row-13 odd\">\n\t<td class=\"column-1\"><p>FEMAO2<\/p><\/td><td class=\"column-2\"><p>IE + EE   + PC<\/p><\/td><td class=\"column-3\"><p>900s<\/p><\/td><td class=\"column-4\"><p>900s<\/p><\/td><td class=\"column-5\"><p>900s+60s<\/p><\/td>\n<\/tr>\n<tr class=\"row-14 even\">\n\t<td class=\"column-1\"><p>INMOM<\/p><\/td><td class=\"column-2\"><p>IE + PC + F<\/p><\/td><td class=\"column-3\"><p>3600s<\/p><\/td><td class=\"column-4\"><p>3600s<\/p><\/td><td class=\"column-5\"><p>3600s w\/ 120 substeps<\/p><\/td>\n<\/tr>\n<tr class=\"row-15 odd\">\n\t<td class=\"column-1\"><p>RCO<\/p><\/td><td class=\"column-2\"><p>LF+EB<\/p><\/td><td class=\"column-3\"><p>600s + 10s<\/p><\/td><td class=\"column-4\"><p>600s<\/p><\/td><td class=\"column-5\"><p>15s<\/p><\/td>\n<\/tr>\n<tr class=\"row-16 even\">\n\t<td class=\"column-1\"><p>UCL<\/p><\/td><td class=\"column-2\"><p>LF + F<\/p><\/td><td class=\"column-3\"><p>5760s<\/p><\/td><td class=\"column-4\"><p>5760s<\/p><\/td><td class=\"column-5\"><p>17280s<\/p><\/td>\n<\/tr>\n<tr class=\"row-17 odd\">\n\t<td class=\"column-1\"><p>UW<\/p><\/td><td class=\"column-2\"><p>LF<\/p><\/td><td class=\"column-3\"><p>720s<\/p><\/td><td class=\"column-4\"><p>720s<\/p><\/td><td class=\"column-5\"><p>5400s<\/p><\/td>\n<\/tr>\n<tr class=\"row-18 even\">\n\t<td class=\"column-1\"><p>DAL<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-19 odd\">\n\t<td class=\"column-1\"><p>FSU<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-20 even\">\n\t<td class=\"column-1\"><p>GFDL<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-21 odd\">\n\t<td class=\"column-1\"><p>IARC-A<\/p><\/td><td class=\"column-2\"><p>LF+EB+F<\/p><\/td><td class=\"column-3\"><p>360s + 6s<\/p><\/td><td class=\"column-4\"><p>360s<\/p><\/td><td class=\"column-5\"><p>360s + 36s<\/p><\/td>\n<\/tr>\n<tr class=\"row-22 even\">\n\t<td class=\"column-1\"><p>IARC-B<\/p><\/td><td class=\"column-2\"><p>LF+EB+F<\/p><\/td><td class=\"column-3\"><p>72s + 1.2s<\/p><\/td><td class=\"column-4\"><p>72s<\/p><\/td><td class=\"column-5\"><p>72s + 7.2s<\/p><\/td>\n<\/tr>\n<tr class=\"row-23 odd\">\n\t<td class=\"column-1\"><p>ECCO2<\/p><\/td><td class=\"column-2\"><p>IE+EE+PC<\/p><\/td><td class=\"column-3\"><p>1200s<\/p><\/td><td class=\"column-4\"><p>1200s<\/p><\/td><td class=\"column-5\"><p>600s<\/p><\/td>\n<\/tr>\n<tr class=\"row-24 even\">\n\t<td class=\"column-1\"><p>MIT<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-25 odd\">\n\t<td class=\"column-1\"><p>NCAR<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-26 even\">\n\t<td class=\"column-1\"><p>NPI<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-27 odd\">\n\t<td class=\"column-1\"><p>UMASD<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-28 even\">\n\t<td class=\"column-1\"><p>NOCS\/ORCA25<\/p><\/td><td class=\"column-2\"><p>LF+Asselin +EE+IE<\/p><\/td><td class=\"column-3\"><p>1440 s<\/p><\/td><td class=\"column-4\"><p>1440 s<\/p><\/td><td class=\"column-5\"><p>7200 s<\/p><\/td>\n<\/tr>\n<tr class=\"row-29 odd\">\n\t<td class=\"column-1\"><p>MCGU<\/p><\/td><td class=\"column-2\"><p>\u00a0<\/p><\/td><td class=\"column-3\"><p>\u00a0<\/p><\/td><td class=\"column-4\"><p>\u00a0<\/p><\/td><td class=\"column-5\"><p>\u00a0<\/p><\/td>\n<\/tr>\n<tr class=\"row-30 even\">\n\t<td class=\"column-1\"><p>LOCEAN<\/p><\/td><td class=\"column-2\"><p>LF + Asselin<\/p><\/td><td class=\"column-3\"><p>2160s<\/p><\/td><td class=\"column-4\"><p>2160s<\/p><\/td><td class=\"column-5\"><p>10800s<\/p><\/td>\n<\/tr>\n<tr class=\"row-31 odd\">\n\t<td class=\"column-1\"><p>IOS<\/p><\/td><td class=\"column-2\"><p>LF + F + PC<\/p><\/td><td class=\"column-3\"><p>43200s *<\/p><\/td><td class=\"column-4\"><p>43200s<\/p><\/td><td class=\"column-5\"><p>43200s<\/p><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-7 from cache -->\n<p>LF=leapfrog, PC=predict-correct, F=forward, IE=implicit Euler, EE=explicit Euler<\/p>\n<p>**NERSC: sea ice velocitites are updated daily as a steady state balance of forces,while ice scalar properties are advected with Dt=1600s<\/p>\n<p>*** FEMAO1: 3600 for the mode with explicit tides.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Time step LF=leapfrog, PC=predict-correct, F=forward, IE=implicit Euler, EE=explicit Euler **NERSC: sea ice velocitites are updated daily as a steady state balance of forces,while ice scalar properties are advected with Dt=1600s *** FEMAO1: 3600 for the mode with explicit tides.<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":639,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"tpl-sidebar.php","meta":{"advanced-sidebar-menu\/link-title":"","advanced-sidebar-menu\/exclude-page":false},"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/658"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/users\/83"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/comments?post=658"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/658\/revisions"}],"predecessor-version":[{"id":1671,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/658\/revisions\/1671"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/pages\/639"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/aomip\/wp-json\/wp\/v2\/media?parent=658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}