| Data Platform | Operational Surface Data |
| Description | All available surface weather reports worldwide were archived for the entire study period of IMPROVE-1. |
| Location(s) | Worldwide |
| Operators | n/a |
| Data Format(s) | METAR coded text / UW decoded format |
| Software | UW in-house software |
| Data Location(s) | /home/disk/wrf1/improve1/surface |