BEGIN:VCALENDAR VERSION:2.0 PRODID:-//18.83.4.138//NONSGML kigkonsult.se iCalcreator 2.20// CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Oceans at MIT X-WR-CALDESC:Striving to understand\, harness and sustain Earth'\;s def ining frontier. X-FROM-URL:http://oceans.mit.edu X-WR-TIMEZONE:America/New_York BEGIN:VTIMEZONE TZID:America/New_York X-LIC-LOCATION:America/New_York BEGIN:STANDARD DTSTART:20171105T020000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RDATE:20181104T020000 TZNAME:EST END:STANDARD BEGIN:DAYLIGHT DTSTART:20180311T020000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:loqqebtvf9gka4i5h01a0ujl90@google.com DTSTAMP:20180503T094129Z CATEGORIES;LANGUAGE=en-US:MIT Seminar | PAOC Oceanography and Climate Sack Lunch CONTACT: DESCRIPTION:Scaling properties of Arctic sea ice deformation in high-resolu tion viscous-plastic sea ice models\n\nMany climate models use a rheology of the viscous-plastic type to simulate sea ice dynamics. With this rheolo gy\, large scale velocity and thickness fields can be realistically simula ted\, but the representation of small scale deformation rates and Linear K inematic Features (LKF) is thought to be inadequate. However\, at high res olution (< 5 km) the rheology starts to produce lines of localised deforma tion rates. In this study we use results from a 1-km Pan-Arctic model to i nvestigate the influence of these deformation features on the scaling prop erties of sea ice deformation. For evaluation the EGPS satellite data set of small-scale sea ice kinematics for the Central Arctic (successor of RGP S) is used.\nThe modelled sea ice deformation shows multi-fractal spatial scaling and\, in this sense\, agrees with the satellite data. In addition\ , the temporal coupling of the spatial scaling is reproduced as well. Furt hermore\, we examine the regional and seasonal variations of spatial scali ng properties and its dependence on the ice condition\, i.e. sea ice conce ntration and thickness\, which are in agreement with previous RGPS studies . DTSTART;TZID=America/New_York:20161031T150000 DTEND;TZID=America/New_York:20161031T160000 LOCATION:54-209 SEQUENCE:0 SUMMARY:SLS – Nils Hutter (Alfred Wegener Institute) URL:http://oceans.mit.edu/event/sls-nils-hutter-alfred-wegener-institute X-ALT-DESC;FMTTYPE=text/html:\\n\\n\\n\\n\\nScaling properti es of Arctic sea ice deformation in high-resolution viscous-plastic sea ic e models\n\nMany climate models use a rheology of the viscous-plastic type to simulate sea ice dynamics. With this rheology\, large scale velocity a nd thickness fields can be realistically simulated\, but the representatio n of small scale deformation rates and Linear Kinematic Features (LKF) is thought to be inadequate. However\, at high resolution (< 5 km) the rheolo gy starts to produce lines of localised deformation rates. In this study w e use results from a 1-km Pan-Arctic model to investigate the influence of these deformation features on the scaling properties of sea ice deformati on. For evaluation the EGPS satellite data set of small-scale sea ice kine matics for the Central Arctic (successor of RGPS) is used.\nThe modelled s ea ice deformation shows multi-fractal spatial scaling and\, in this sense \, agrees with the satellite data. In addition\, the temporal coupling of the spatial scaling is reproduced as well. Furthermore\, we examine the re gional and seasonal variations of spatial scaling properties and its depen dence on the ice condition\, i.e. sea ice concentration and thickness\, wh ich are in agreement with previous RGPS studies. END:VEVENT END:VCALENDAR