A complete list of the variables is included here:
The following terms apply to the ISCCP-D1 variables:
| d: |
indicates variables present only during local daytime |
| TAU: |
cloud optical thickness |
| PATH: |
cloud water path |
| PC: |
cloud top pressure |
| TC: |
cloud top temperature |
| TS: |
surface temperature |
| RS: |
surface reflectance |
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Box identification
-------------------------------------------------------------------------------
1
Latitude index (equal-area and equal-angle)
2
Longitude index (equal-area)
3
Westernmost longitude index (equal-angle)
4
Easternmost longitude index (equal-angle)
5
Satellite-ID-code
6
Day/night/land/water/coast code
day night
water 1 101 (land fraction
0-35 %)
land 2 102
(land fraction 65-100 %)
coast 3 103 (land fraction
35-65 %
7
Snow/ice cover (percent)
8
MUE = cosine of satellite zenith angle * 100 (0-100)
9d
MU0 = cosine of solar zenith angle * 100 (0-100)
10d
PHI = relative azimuth angle (0-180 degrees)
-------------------------------------------------------------------------------
Pixel counters
-------------------------------------------------------------------------------
11
Total number of pixels
12
Number of cloudy pixels
13
Number of IR-cloudy pixels
14d
Number of IR-only-cloudy pixels
15
Number of NI-cloudy pixels
16
Number of NI-only-cloudy pixels
17
Number of IR-marginally-cloudy pixels
18d
Number of VIS/IR-marginally-cloudy pixels
19
Number of NI-only-marginally-cloudy pixels
-------------------------------------------------------------------------------
Algorithm statistics
-------------------------------------------------------------------------------
20
Number of pixels with IR long term statistics
21
Ratio number of IR-clear pixels < clear IR to number > clear IR
22d
Ratio number of VIS/IR-clear pixels > clear VIS to number < clear VIS
-------------------------------------------------------------------------------
Cloud top pressure (PC) distribution (unadjusted PC)
-------------------------------------------------------------------------------
23
Number of IR-cloudy pixels 10 <= PC <= 180 mb
24
Number of IR-cloudy pixels 180 < PC <= 310 mb
25
Number of IR-cloudy pixels 310 < PC <= 440 mb
26
Number of IR-cloudy pixels 440 < PC <= 560 mb
27
Number of IR-cloudy pixels 560 < PC <= 680 mb
28
Number of IR-cloudy pixels 680 < PC <= 800 mb
29
Number of IR-cloudy pixels 800 < PC <= 1000 mb
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Cloud top pressure (PC) and optical thickness (TAU) distribution
(VIS-adjusted PC)
-------------------------------------------------------------------------------
30d
Number of cloudy pixels 10 <= PC <= 180 mb, 0.02
<= TAU <= 1.27
31d
Number of cloudy pixels 10 <= PC <= 180 mb, 1.27
< TAU <= 3.55
32d
Number of cloudy pixels 10 <= PC <= 180 mb, 3.55
< TAU <= 9.38
33d
Number of cloudy pixels 10 <= PC <= 180 mb, 9.38
< TAU <= 22.63
34d
Number of cloudy pixels 10 <= PC <= 180 mb, 22.63
< TAU <= 60.36
35d
Number of cloudy pixels 10 <= PC <= 180 mb, 60.36
< TAU <= 378.65
36d
Number of cloudy pixels 180 < PC <= 310 mb, 0.02
<= TAU <= 1.27
37d
Number of cloudy pixels 180 < PC <= 310 mb, 1.27
< TAU <= 3.55
38d
Number of cloudy pixels 180 < PC <= 310 mb, 3.55
< TAU <= 9.38
39d
Number of cloudy pixels 180 < PC <= 310 mb, 9.38
< TAU <= 22.63
40d
Number of cloudy pixels 180 < PC <= 310 mb, 22.63
< TAU <= 60.36
41d
Number of cloudy pixels 180 < PC <= 310 mb, 60.36
< TAU <= 378.65
42d
Number of cloudy pixels 310 < PC <= 440 mb, 0.02
<= TAU <= 1.27
43d
Number of cloudy pixels 310 < PC <= 440 mb, 1.27
< TAU <= 3.55
44d
Number of cloudy pixels 310 < PC <= 440 mb, 3.55
< TAU <= 9.38
45d
Number of cloudy pixels 310 < PC <= 440 mb, 9.38
< TAU <= 22.63
46d
Number of cloudy pixels 310 < PC <= 440 mb, 22.63
< TAU <= 60.36
47d
Number of cloudy pixels 310 < PC <= 440 mb, 60.36
< TAU <= 378.65
48d
Number of cloudy pixels 440 < PC <= 560 mb, 0.02
<= TAU <= 1.27
49d
Number of cloudy pixels 440 < PC <= 560 mb, 1.27
< TAU <= 3.55
50d
Number of cloudy pixels 440 < PC <= 560 mb, 3.55
< TAU <= 9.38
51d
Number of cloudy pixels 440 < PC <= 560 mb, 9.38
< TAU <= 22.63
52d
Number of cloudy pixels 440 < PC <= 560 mb, 22.63
< TAU <= 60.36
53d
Number of cloudy pixels 440 < PC <= 560 mb, 60.36
< TAU <= 378.65
54d
Number of cloudy pixels 560 < PC <= 680 mb, 0.02
<= TAU <= 1.27
55d
Number of cloudy pixels 560 < PC <= 680 mb, 1.27
< TAU <= 3.55
56d
Number of cloudy pixels 560 < PC <= 680 mb, 3.55
< TAU <= 9.38
57d
Number of cloudy pixels 560 < PC <= 680 mb, 9.38
< TAU <= 22.63
58d
Number of cloudy pixels 560 < PC <= 680 mb, 22.63
< TAU <= 60.36
59d
Number of cloudy pixels 560 < PC <= 680 mb, 60.36
< TAU <= 378.65
60d
Number of cloudy pixels 680 < PC <= 800 mb, 0.02
<= TAU <= 1.27
61d
Number of cloudy pixels 680 < PC <= 800 mb, 1.27
< TAU <= 3.55
62d
Number of cloudy pixels 680 < PC <= 800 mb, 3.55
< TAU <= 9.38
63d
Number of cloudy pixels 680 < PC <= 800 mb, 9.38
< TAU <= 22.63
64d
Number of cloudy pixels 680 < PC <= 800 mb, 22.63
< TAU <= 60.36
65d
Number of cloudy pixels 680 < PC <= 800 mb, 60.36
< TAU <= 378.65
66d
Number of cloudy pixels 800 < PC <= 1000 mb, 0.02 <=
TAU <= 1.27
67d
Number of cloudy pixels 800 < PC <= 1000 mb, 1.27
< TAU <= 3.55
68d
Number of cloudy pixels 800 < PC <= 1000 mb, 3.55
< TAU <= 9.38
69d
Number of cloudy pixels 800 < PC <= 1000 mb, 9.38
< TAU <= 22.63
70d
Number of cloudy pixels 800 < PC <= 1000 mb, 22.63 <
TAU <= 60.36
71d
Number of cloudy pixels 800 < PC <= 1000 mb, 60.36 <
TAU <= 378.65
72d
Number of cloudy pixels for cloud type 4 = Cumulus, ice
73d
Number of cloudy pixels for cloud type 5 = Stratocumulus, ice
74d
Number of cloudy pixels for cloud type 6 = Stratus, ice
75d
Number of cloudy pixels for cloud type 10 = Altocumulus, ice
76d
Number of cloudy pixels for cloud type 11 = Altostratus, ice
77d
Number of cloudy pixels for cloud type 12 = Nimbostratus, ice
-------------------------------------------------------------------------------
Cloud top pressures (PC)
-------------------------------------------------------------------------------
78
Mean PC for cloudy pixels (VIS-adjusted day, unadjusted night)
79
Mean PC for IR-cloudy pixels (unadjusted)
80d
Mean PC for IR-only-cloudy pixels (VIS-adjusted)
81
Mean PC for NI-only-cloudy pixels (unadjusted)
82
Mean PC for IR-marginally-cloudy pixels (unadjusted)
83d
Mean PC for VIS/IR-marginally-cloudy pixels (VIS-adjusted)
84
Sigma-PC for IR-cloudy pixels (unadjusted)
-------------------------------------------------------------------------------
Cloud top temperatures (TC)
-------------------------------------------------------------------------------
85
Mean TC for cloudy pixels (VIS-adjusted day, unadjusted night)
86
Mean TC for IR-cloudy pixels (unadjusted)
87d
Mean TC for IR-only-cloudy pixels (VIS-adjusted)
88
Mean TC for NI-only-cloudy pixels (unadjusted)
89
Mean TC for IR-marginally-cloudy pixels (unadjusted)
90d
Mean TC for VIS/IR-marginally-cloudy pixels (VIS-adjusted)
91
Sigma-TC for IR-cloudy pixels (unadjusted)
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Cloud optical thicknesses (TAU)
-------------------------------------------------------------------------------
92d
Mean TAU for cloudy pixels
93d
Mean TAU for IR-cloudy pixels
94d
Mean TAU for IR-only-cloudy pixels
95d
Mean TAU for NI-only-cloudy pixels
96d
Mean TAU for IR-marginally-cloudy pixels
97d
Mean TAU for VIS/IR-marginally-cloudy pixels
98d
Sigma-TAU for IR-cloudy pixels
-------------------------------------------------------------------------------
Cloud water paths (WP)
-------------------------------------------------------------------------------
99d
Mean WP for cloudy pixels
100d
Mean WP for IR-cloudy pixels
101d
Mean WP for IR-only-cloudy pixels
102d
Mean WP for NI-only-cloudy pixels
103d
Mean WP for IR-marginally-cloudy pixels
104d
Mean WP for VIS/IR-marginally-cloudy pixels
105d
Sigma-WP for IR-cloudy pixels
-------------------------------------------------------------------------------
Cloud top temperature (TC) distribution (unadjusted PC,TC)
-------------------------------------------------------------------------------
106
Mean TC for IR-cloudy pixels 10 <= PC <= 180 mb
107
Mean TC for IR-cloudy pixels 180 < PC <= 310 mb
108
Mean TC for IR-cloudy pixels 310 < PC <= 440 mb
109
Mean TC for IR-cloudy pixels 440 < PC <= 560 mb
110
Mean TC for IR-cloudy pixels 560 < PC <= 680 mb
111
Mean TC for IR-cloudy pixels 680 < PC <= 800 mb
112
Mean TC for IR-cloudy pixels 800 < PC <= 1000 mb
-------------------------------------------------------------------------------
Temperature, optical thickness, water path means for LOW cloud types
(VIS-adjusted TC)
-------------------------------------------------------------------------------
113d
Mean TC for cloud type 1 = Cumulus,liquid
114d
Mean TAU for cloud type 1
115d
Mean WP for cloud type 1
116d
Mean TC for cloud type 2 = Stratocumulus,liquid
117d
Mean TAU for cloud type 2
118d
Mean WP for cloud type 2
119d
Mean TC for cloud type 3 = Stratus,liquid
120d
Mean TAU for cloud type 3
121d
Mean WP for cloud type 3
122d
Mean TC for cloud type 4 = Cumulus,ice
123d
Mean TAU for cloud type 4
124d
Mean WP for cloud type 4
125d
Mean TC for cloud type 5 = Stratocumulus,ice
126d
Mean TAU for cloud type 5
127d
Mean WP for cloud type 5
128d
Mean TC for cloud type 6 = Stratus,ice
129d
Mean TAU for cloud type 6
130d
Mean WP for cloud type 6
-------------------------------------------------------------------------------
Temperature, Optical thickness, Water path means for MIDDLE cloud types
(VIS-adjusted TC)
-------------------------------------------------------------------------------
131d
Mean TC for cloud type 7 = Altocumulus,liquid
132d
Mean TAU for cloud type 7
133d
Mean WP for cloud type 7
134d
Mean TC for cloud type 8 = Altostratus,liquid
135d
Mean TAU for cloud type 8
136d
Mean WP for cloud type 8
137d
Mean TC for cloud type 9 = Nimbostratus,liquid
138d
Mean TAU for cloud type 9
139d
Mean WP for cloud type 9
140d
Mean TC for cloud type 10 = Altocumulus,ice
141d
Mean TAU for cloud type 10
142d
Mean WP for cloud type 10
143d
Mean TC for cloud type 11 = Altostratus,ice
144d
Mean TAU for cloud type 11
145d
Mean WP for cloud type 11
146d
Mean TC for cloud type 12 = Nimbostratus,ice
147d
Mean TAU for cloud type 12
148d
Mean WP for cloud type 12
-------------------------------------------------------------------------------
Temperature, Optical thickness, Water path means for HIGH cloud types
(VIS-adjusted TC)
-------------------------------------------------------------------------------
149d
Mean TC for cloud type 13 = Cirrus
150d
Mean TAU for cloud type 13
151d
Mean WP for cloud type 13
152d
Mean TC for cloud type 14 = Cirrostratus
153d
Mean TAU for cloud type 14
154d
Mean WP for cloud type 14
155d
Mean TC for cloud type 15 = Deep convective
156d
Mean TAU for cloud type 15
157d
Mean WP for cloud type 15
-------------------------------------------------------------------------------
Surface temperatures (TS)
-------------------------------------------------------------------------------
158
Mean TS from clear sky composite
159
Mean TS for clear pixels
160
Mean TS for IR-clear pixels
161d
Mean TS for VIS/IR-clear pixels
162
Sigma-TS for IR-clear pixels
-------------------------------------------------------------------------------
Surface reflectances (RS)
-------------------------------------------------------------------------------
163d
Mean RS from clear sky composite
164d
Mean RS for clear pixels
165d
Mean RS for IR-clear pixels
166d
Mean RS for VIS/IR-clear pixels
167d
Sigma-RS for IR-clear pixels
-------------------------------------------------------------------------------
Near-IR channel reflectance
-------------------------------------------------------------------------------
168d
Mean NI reflectance from clear sky composite
-------------------------------------------------------------------------------
IR channel radiances
-------------------------------------------------------------------------------
169
Mean IR radiance for IR-cloudy pixels
170
Sigma-IR radiance for IR-cloudy pixels
171d
Mean IR radiance for VIS/IR-cloudy pixels
172
Mean IR radiance for IR-clear pixels
173
Sigma-IR radiance for IR-clear pixels
174d
Mean IR radiance for VIS/IR-clear pixels
175
Mean IR radiance from clear sky composite
-------------------------------------------------------------------------------
VIS channel radiances
-------------------------------------------------------------------------------
176d
Mean VIS radiance for VIS/IR-cloudy pixels
177d
Sigma-VIS radiance for VIS/IR-cloudy pixels
178d
Mean VIS radiance for IR-cloudy pixels
179d
Mean VIS radiance for VIS/IR-clear pixels
180d
Sigma-VIS radiance for VIS/IR-clear pixels
181d
Mean VIS radiance for IR-clear pixels
182d
Mean VIS radiance from clear sky composite
-------------------------------------------------------------------------------
TOVS atmospheric information
-------------------------------------------------------------------------------
183
Atmospheric data origin code
184
Surface pressure
185
Near-surface air temperature
186
Temperature at 900 mb
187
Temperature at 740 mb
188
Temperature at 620 mb
189
Temperature at 500 mb
190
Temperature at 375 mb
191
Temperature at 245 mb
192
Temperature at 115 mb
193
Tropopause pressure
194
Tropopause temperature
195
Stratosphere temperature at 50 mb
196
Stratosphere temperature at 15 mb
197
Precipitable water for 1000-800 mb
198
Precipitable water for 800-680 mb
199
Precipitable water for 680-560 mb
200
Precipitable water for 560-440 mb
201
Precipitable water for 440-310 mb
202
Ozone abundance
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