Svalbard

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Validation results:
• Greenland
• Svalbard
• Southern Hemisphere
SST validation:
• Global METOP MDB tool

The Sea Ice service at met.no produce daily ice charts covering the Fram Strait to the Barents Sea with main emphasize on the areas around Svalbard. Areas where independent information (manual inspection of SAR, MODIS and AVHRR) are utilized are marked by the ice service. These are then collocated with the OSI SAF ice product. The focus is on areas close to the ice edge. Example of a used area is given in the figure below. To the left (1) a daily Sea Ice service product is show, to the right (2) a polygon with validation data from the same product is shown. Click at the image to enlarge.

Below tables with results from comparing the OSI SAF ice concentration and ice edge products are given. These validation resuls are representing areas close to the ice edge. Areas further into the Artic ice have not been included. Including these areas would have increased the validation "score". The validation results show the relative performance in the areas close to the ice edge and for example illustrates the problems finding the ice edge during late summer.

Validation results for Sea Ice Concentration product

OSI SAF Sea Ice Concentration product compared with met.no Ice Service (OSISAF - Ice service)
Source: oper , Product area: nh

Year Month Match +/- 10% (%) Match +/- 20% (%) Bias Std dev Num compared

2011 05 44.27 55.91 14.28 24.50 15862

2011 06 58.94 73.70 -8.90 16.28 142784

2011 07 60.67 79.99 -5.99 14.28 65663

2011 08 60.60 73.05 -10.45 15.40 102357

2011 09 75.48 85.99 -0.95 14.96 85484

2011 10 86.99 94.05 -2.14 8.45 103190

2011 11 79.04 88.87 -2.45 13.24 82687

2011 12 77.36 88.12 -1.61 12.31 117282

2012 01 77.22 87.24 -4.91 12.57 126068

2012 02 80.71 86.51 1.11 15.45 27441

Validation table updated at: 2012.02.09 16:16 UTC

Validation results for Sea Ice Edge product

OSI SAF Sea Ice Edge product compared with met.no Ice Service (OSISAF - Ice service)
Source: oper , Product area: nh

Year Month Match (%) OSI SAF underestimates OSI SAF overestimates Mean edge difference (km) Num compared

2011 05 92.73 6.82 0.45 35.50 8737

2011 06 90.90 8.31 0.79 36.76 141848

2011 07 96.82 2.09 1.09 13.55 62710

2011 08 93.76 4.75 1.49 20.41 102971

2011 09 93.42 1.95 4.63 17.05 86993

2011 10 97.78 0.79 1.43 11.64 103924

2011 11 96.08 1.72 2.21 16.91 79459

2011 12 97.33 1.63 1.04 14.37 109566

2012 01 95.84 2.88 1.28 17.59 126653

2012 02 91.63 1.40 6.97 18.93 27520

Validation table updated at: 2012.02.09 16:16 UTC

Updated February 6. 2012 - Webmaster Steinar Eastwood