TAbMEP2 Assessment: POLARCAT Absorption Measurements

1
TAbMEP2 Assessment POLARCAT Absorption
Measurements
All data shown here are converted to STP
conditions.
2
Assessment Summary
Table 1. Recommended POLARCAT Absorption
measurement treatment
Aircraft Instrument Reported 1s Uncertainty Recommended Bias Correction
NASA DC-8 PSAP None listed -0.0896 0.218 AbsDC8
NASA P-3B  PSAP None listed 0.139 0.536 AbsP3B
NOAA WP-3D PSAP Point by point -0.191 0.0663 AbsWP3D
Random uncertainty analysis (IEIP) appeared to be
unsuitable for this particle absorption dataset.
3
Assessment Summary Cont.
Table 2. POLARCAT Absorption bias estimates
Aircraft Instrument Apparent Bias Best Estimate Bias
NASA DC-8 PSAP 0 -0.0896 0.218 AbsDC8
NASA P-3B  PSAP 0.032 0.491 AbsDC8 0.139 0.536 AbsP3B
NOAA WP-3D PSAP -0.301 0.162 AbsDC8 -0.191 0.0663 AbsWP3D
4
P-3B vs. DC-8
5
P-3B vs. DC-8 04/08/2008
6
P-3B vs. DC-8 04/08/2008
7
P-3B vs. DC-8 04/08/2008
8
P-3B vs. DC-8 04/19/2008
9
P-3B vs. DC-8 04/19/2008
10
P-3B vs. DC-8 04/19/2008
11
P-3B vs. DC-8 07/10/2008
12
P-3B vs. DC-8 07/10/2008
13
P-3B vs. DC-8 07/10/2008
14
P-3B vs. DC-8 all dates
15
P-3B vs. DC-8 all dates
16
WP-3D vs. DC-8 04/12/2008
17
WP-3D vs. DC-8 04/12/2008
18
WP-3D vs. DC-8 04/12/2008
19
WP-3D vs. DC-8 04/12/2008
20
P-3B vs. WP-3D 04/15/2008
21
P-3B vs. WP-3D 04/15/2008
22
P-3B vs. WP-3D 04/15/2008
23
P-3B vs. WP-3D 04/15/2008