1. Question: What happens to a forward model calculation when 1 degree is added to the atmospheric profile at every level in the atmosphere?
Band
Approx.
WL (um)
US Std Atm (C)
US Std Atm +1C
US Std Atm (K)
US Std Atm +1K
Difference 7
3.9
12.61
13.6
285.76
286.75
0.99 8
6.2
-38.26
-37.25
234.89
235.9
1.01 9
6.95
-30.37
-29.4
242.78
243.75
0.97 10
7.3
-18.67
-17.8
254.48
255.35
0.87 11
8.5
10.45
11.43
283.6
284.58
0.98 12
9.6
-14.68
-13.74
258.47
259.41
0.94 13
10.35
12.81
13.79
285.96
286.94 14
11.2
13.15
14.15
286.3
287.3
1.00 15
12.3
11.19
12.18
284.34
285.33 16
13.3
-2.47
-1.63
270.68
271.52
0.84
ABI forward model calculations for the US Standard Atmosphere (Surface pressure at 1000hPa, 0 view angle). The +1C and +1K columns are produced by adding 1 degree to the temperature at every pressure level in the atmosphere (101 level atmosphere). The difference column is the difference between the brightness temperatures calculated for the +1 degree and the unaltered standard atmosphere. Model used is PFAAST.