Flight track of POLAR-4 research aircraft (01-04-1998).
The complete data set consists of seven flight legs, which are seperated by the radiometer calibration procedure.
Ice concentrations derived from satellite and aircraft mesasurements.
Microwave radiometers (19.35 GHz and 37 GHz, angle of incidence 53°)
were operated on POLAR-4 research aircraft. Ice concentrations were
derived from aircraft measurements
using the NASA-TEAM algorithm.
In order to derive ice concentrations from SSM/I 85GHz channels
the ARTIST SEA ICE ALGORITHM ASI-v3.2 was applied.
The high resolved aircraft measurements were smoothed
with a gaussian weighted filter in order
to get a comparable resolution to the SSM/I 85GHz footprint.
Therefore each point represents an ice concentration integrated
over a reasonable aircraft flight path and the co-located
ice concentration from the 85GHz channel.
Flight track of POLAR-4 research aircraft (01-04-1998).
The complete data set consists of seven flight legs,
which are seperated by the radiometer calibration procedure.
Flight leg 1
Flight leg 2 
Flight leg 3 
Flight leg 4 
Flight leg 5 
Flight leg 6 
Flight leg 7