S Fusion of Satellite SAR with Passive Microwave Data for Sea Ice Remote Sensing
99
SSMII - baaed Ice concentration estimates
l00r---------------------------------------------------------, ..
90
. . ..
. .
. .
80
. . .. . .
•
70
o
o 0
o
•
l 60
" '50 40
1
:·FY·rnean J
CMY-mean
6 Total-mean
o
o
o
o
o
o
•
•
•
o •
•
30
•
•
•
•
20
o
•
10
JO(1991)
Fig.4. Mean values of ice type concentration, derived from the NASA Team (NT) algorithm. The averages are computed for areas enclosed by the SAR images used later in the fusion process
Table 1. SSM/I-based ice concentrations
Date and corresponding SAR
frame numbers
Ice concentration
Julian day
SARframe
MY ice (0/0)
FY ice (0/0)
Total ice (0/0)
233
1827
22.0
69.8
91.8
235
1863
61.3
35.8
97.1
237
1791
65.8
25.1
91.0
238
1809
67.3
22.6
89.9
239
1701
12.1
71.3
8304
240
1791
30.7
6304
94.1
241
1755
6004
32.3
92.7
241
1791
685
27.0
95.6
241
1809
545
38.6
93.1
242
1701
56.9
325
8904
246
1719
50.2
30.9
81.0
249
1719
39.3
40.2
795
249
1827
51.0
2404
7504
251
1701
65.0
11.9
76.9
255
1719
52.0
26.9
78.9
MY multiyear ice; FY first-year ice
99
SSMII - baaed Ice concentration estimates
l00r---------------------------------------------------------, ..
90
. . ..
. .
. .
80
. . .. . .
•
70
o
o 0
o
•
l 60
" '50 40
1
:·FY·rnean J
CMY-mean
6 Total-mean
o
o
o
o
o
o
•
•
•
o •
•
30
•
•
•
•
20
o
•
10
JO(1991)
Fig.4. Mean values of ice type concentration, derived from the NASA Team (NT) algorithm. The averages are computed for areas enclosed by the SAR images used later in the fusion process
Table 1. SSM/I-based ice concentrations
Date and corresponding SAR
frame numbers
Ice concentration
Julian day
SARframe
MY ice (0/0)
FY ice (0/0)
Total ice (0/0)
233
1827
22.0
69.8
91.8
235
1863
61.3
35.8
97.1
237
1791
65.8
25.1
91.0
238
1809
67.3
22.6
89.9
239
1701
12.1
71.3
8304
240
1791
30.7
6304
94.1
241
1755
6004
32.3
92.7
241
1791
685
27.0
95.6
241
1809
545
38.6
93.1
242
1701
56.9
325
8904
246
1719
50.2
30.9
81.0
249
1719
39.3
40.2
795
249
1827
51.0
2404
7504
251
1701
65.0
11.9
76.9
255
1719
52.0
26.9
78.9
MY multiyear ice; FY first-year ice
