Table 4.
Statistical analysis of modeled RH using ozonesonde and aircraft observations.
| N | Mean | R | NMB | NME | ||
|---|---|---|---|---|---|---|
| Observation | Model | |||||
| Ozonesonde | ||||||
| US and Canada | ||||||
| – boundary layer | 1016 | 57.70 | 67.07 | 0.73*** | 16.2% | 24.5% |
| – free troposphere | 881 | 39.16 | 43.31 | 0.83*** | 10.8% | 29.7% |
| – upper model layer | 398 | 7.81 | 8.72 | 0.79*** | 11.6% | 62.3% |
| Asia | ||||||
| – boundary layer | 283 | 65.89 | 79.63 | 0.45*** | 20.8% | 28.7% |
| – free troposphere | 184 | 46.26 | 51.52 | 0.38*** | 11.4% | 47.7% |
| – upper model layer | 43 | 18.96 | 26.47 | 0.63*** | 39.6% | 67.2% |
| Europe | ||||||
| – boundary layer | 1485 | 63.84 | 68.92 | 0.73*** | 8.0% | 17.1% |
| – free troposphere | 1368 | 36.14 | 42.82 | 0.80*** | 18.5% | 32.6% |
| – upper model layer | 679 | 7.13 | 9.56 | 0.91*** | 34.1% | 56.1% |
| Aircraft | ||||||
| – troposphere | 126 | 41.66 | 52.04 | 0.84*** | 24.9% | 28.7% |
Note: significance levels by Student’s t test for correlation coefficients between observations and simulations are marked as
*
p<0.05,
**
p<0.01, and
***
p<0.001, and lack of a mark indicates no significance. The 5h averaged hourly modeled relative humidity is used for ozonesonde data. The 2–4h averaged hourly modeled relative humidity is used for aircraft data to fully cover each observation time, and original aircraft data are averaged into 100m resolution to be compared with the model.