Algorithm Input and Output Data Definition (IODD)

Except for the input L1B TB data, the auxiliary and output data are all on EASE2 grids. Refer to Table 4.

Input data

Field	Description	Shape/Amount
L1B TB	L1B Brightness Temperature at KU and KA-bands (both H and V polarization)	full swath or section of it (Nscans, Npos)
L1B NeΔT	Random radiometric uncertainty of the channels	full swath or section of it (Nscans, Npos)

Output data

Field	Description	Shape/Amount
sea-ice drift vectors	dX and dY components of the motion vectors.	(nx,ny) on the (n,s)h_ease2-250 grid.
sea-ice drift vectors uncertainty	dX and dY components of the uncertainty vector (1-sigma).	(nx,ny) on the (n,s)h_ease2-250 grid.
status flags	indicate the reasons for missing, bad, or nominal vectors.	(nx,ny) on the (n,s)h_ease2-250 grid.

Auxiliary data

Field	Description	Shape/Amount
sea-ice and land mask	A recent sea-ice concentration field including land information	SIC and land-mask on the (n,s)h_ease2-005 grid.