Jens Jakobsen Danish Meteorological Institute

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Presentation transcript:

Jens Jakobsen Danish Meteorological Institute jjk@dmi.dk Customized Antarctica Ice Products Support to Mary Arctica January – February 2016 Jens Jakobsen Danish Meteorological Institute jjk@dmi.dk 5th Ice Analyst Workshop National Ice Center 16 – 20 May 2016

The DMI Background for supporting Antarctica vessel operations: Decades of experience from Greenland waters Decades of cooperation with Royal Arctic Line Access to a wide range of satellite data - 4 ArcGis workstations with SIKU (ice charting software) Familiar with International ice standards (WMO) Provision of ice products for Antarctica to Royal Arctic Line since 2012

Mary Arctica expected to face: The ice environment: Mary Arctica expected to face: Heavy ice conditions for 4-5 weeks (bringing supplies for 3 research stations) Moderate to high concentrations of level sea ice up to about 200+ cm thick Ridges and compression zones Windy conditions and poor visibility Ice shelf / Icebergs

Input data for ice analysis Satellite imagery (Sentinel 1A, Modis, AMSR2, TerraSAR-X, Radarsat-2 & Landsat-8 if needed)

Input data for ice analysis… Vessel webcameras Vessel observations/reports Weather forecasts (Ninjo/Neumayer Station) Hourly position/progress updates of vessel

Products and services to Mary Arctica Ice charts (pdf files, WMO Egg Code) Satellite image Quicklooks (pdf files) Daily monitoring of ice situation (7 days a week) Daily correspondence with Mary Arctica crew about progress and ice conditions Special focus on: Large floes Leads / openings Compression zones Changes since yesterday

Producing ice charts in ArcGis/SIKU Open latest ice analysis Import new satellite imagery Update/draw new ice edge and ice class borders Determine ice egg values for each polygon Prepare layout and insert symbols Export ice chart

Producing ice charts in ArcGis/SIKU

Producing ice charts in ArcGis/SIKU

Producing ice charts in ArcGis/SIKU

Producing ice charts in ArcGis/SIKU

Producing ice charts in ArcGis/SIKU Ice charts distributed by email as pdf files Suggested route inserted

Producing ice charts in ArcGis/SIKU Sigrid-3 file (.shp file) exported after each analysis

Lessons learned from 2016 support: More Sentinel 1A acquisitions of AOI are needed (S1B available later this year) Patience is still required when navigating in Antarctic ice infested waters 2 wind events caused a total delay of about 10 days – ”waiting on weather” AMSR2 data is well understood by vessel crew 2 sea ice analysts share the task to keep continuity and close communication with the vessel

Future Antarctic ice analysis Sentinel 2A images (optical, 10m res.), 22 December 2015

Acknowledgements DMI: Henrik Mathiessen, Keld Quistgaard, Leif Toudal Pedersen DTU: Roberto Saldo (http://www.seaice.dk/IICWG/) AWI: Christine Wesche (TSX imagery) and Neumayer Station RAL: Jane Robertsen (photos of Mary Arctica)