Comparisons of Brightness Temperatures of Landsat-7/ETM+ and Terra/MODIS around Hotien Oasis in the Taklimakan Desert
Table 7
Summary of statistical analysis of the brightness temperature samples of ETM+ corresponding to one pixel of MODIS. In the table and are the ratio (%) of the numbers of samples of ETM+ in () and(), respectively, in the area of one pixel of MODIS.
Name
ETM+
MODIS
Band 6
Band 31
Band 32
Mean
Std.D.
Min.
Max.
Range
#1%
#2%
Mean
Mean
Desert (flat)
51.55
0.45
50.37
52.62
2.25
64.11
97.04
53.73
54.63
Area of small sand dune
50.21
0.58
48.76
51.79
3.03
61.22
95.89
52.22
53.28
Area of large sand dune
50.63
0.50
48.60
52.79
4.19
64.78
96.91
53.79
54.62
Desert of stone and pebble (bright)
45.70
0.54
44.01
46.96
2.95
77.53
96.80
47.20
47.82
Desert of stone and pebble (dark)
45.47
0.67
43.92
47.14
3.22
61.13
96.33
46.24
46.71
Rocky hill (sunny side)
45.11
1.67
39.92
49.60
9.68
67.66
96.42
44.61
45.14
Rocky hill (shading side)
35.28
2.80
29.66
45.70
16.04
71.64
95.13
39.19
39.25
Rocky hill with dry vegetation (sunny side)
40.83
1.90
34.54
45.36
10.82
69.78
95.62
40.01
40.25
Rocky hill with dry vegetation (shading side)
33.59
1.65
29.32
39.03
9.71
63.89
97.07
36.29
36.21
Oasis farmland
37.00
2.88
30.59
44.63
14.04
66.42
96.18
38.73
38.43
Oasis farmland with scattered bright bare land
32.65
2.31
29.04
41.08
12.04
70.49
95.33
34.41
34.17
Oasis farmland withscattered dark bare land
32.52
2.20
28.64
38.65
10.01
63.02
97.42
33.59
33.45
Oasis farmland with paved roads
40.30
2.09
33.63
45.07
11.44
67.18
96.11
41.30
41.48
Urban area with paved roads
42.05
1.39
37.75
45.59
7.84
67.62
96.36
43.08
43.11
Grassland near lower reach of large river
48.59
2.20
42.67
51.96
9.29
64.56
97.47
50.98
50.98
Grassland near upper reach of large river
40.70
2.08
35.78
45.66
9.88
68.44
96.07
40.98
41.16
River beach of lower reach of large river
48.63
1.64
41.53
51.38
9.85
70.09
96.67
49.82
50.36
River beach of upper reach of large river
41.92
1.07
37.71
45.24
7.53
76.96
94.98
41.22
41.84
Reservoir
23.84
0.98
22.50
30.71
8.21
77.91
96.40
26.89
26.17
Total (Mean)
41.40
1.56
37.31
45.84
8.53
68.11
96.33
42.86
43.11
m: mean, : standard deviation, unit of BT:°C, #1, #, samples of ETM+: 225.
