The DNSC08ERR Interpolatsion Error

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Presentation transcript:

The DNSC08ERR Interpolatsion Error g Ole B. Andersen and P. Knudsen (DTU-SPACE)

The DNSC08 Interpolation Error The Error file associated with the DNSC08 grids illustrate the error associated with the interpolation of the sea surface height observations onto the 1 minute global grid. The Error file can be used to investigate the quality of the derived grid and can also be used to discriminate between land / ocean The Bathymetry file can also be used to discriminate between land and sea A recommended value of 0.09 m (or 0.1 m) is frequently used to elliminate data over land. EGU meeting, Vienna, Austria | April 2008 | OA | page 2

Examples of ERROR file EGU meeting, Vienna, Austria | April 2008 | OA | page 3

Examples of ERROR file EGU meeting, Vienna, Austria | April 2008 | OA | page 4

Summary DNSC08 Suite of Global Fields Resolution: 1 minute by 1 minute (2 km by 2 km) True global fields (90°S to 90°N) DNSC08 All files: ftp.spacecenter.dk/pub/DNSC08 (all files) DVD: Contact oa@space.dtu.dk Consistent Products available: Altimetric (geometrical) MSS DNSC08-MSS Altimetric derived Bathymetry DNSC08-BAT Altimetryc derived MDT DNSC08-MDT Altimetric Marine Gravity field DNSC08-GRA Associated Error field DNSC08-ERR Products also available in Google Earth EGU meeting, Vienna, Austria | April 2008 | OA | page 5

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