| Current sea ice |
| Nares Strait 'ice-bridge' |
| Hudson Bay ice area over past year |
| Tropopause theta |
| Soundings |
| Satellite images |
| Initial state with relative humidity of 100% |
| Skew-T check for mixing ratios |
| Evolution of vortex as a function of relative humidity |
| Initial state with relative humidity of 100% |
| Three-dimensional PV |
| Imbalance? |
| Evolution of vortex as a function of relative humidity |
| Initial state with relative humidity of 100% |
| Skew-T check for mixing ratios |
| Evolution of vortex as a function of relative humidity |
| How well does the budget close with only 1 diabatic source? |
