Table 2: CMDL Baseline Aerosol Monitoring Stations (status as of January, 1996)
| Category | Baseline Arctic | Baseline Free Troposphere | Baseline Marine | Baseline Antarctic |
|---|---|---|---|---|
| Location | Point Barrow, AK | Mauna Loa, HI | American Samoa | South Pole |
| Designator | BRW | MLO | SMO | SPO |
| Latitude | 71.323 | 19.539 | -14.232 | -89.997 |
| Longitude | 156.609 | 155.578 | 170.563 | -102.0 |
| Elevation (m) | 8 | 3397 | 77 | 2841 |
| Responsible Institue | CMDL | CMDL | CMDL | CMDL |
| Status | Operational 1974 | Operational 1974 | Operational 1977 | Operational 1974 |
| Sample RH | uncontrolled | uncontrolled | uncontrolled | uncontrolled |
| Sample Size Fractions | uncontrolled | uncontrolled | uncontrolled | uncontrolled |
| Optical measurements | ssp(4l), sap(1l) | ssp(4l), ssp(3l), sap(1l), d(6l) | ssp(4l) | ssp(4l), sap(1l) |
| Microphysical measurements | Ntot | Ntot | Ntot | Ntot |
| Chemical Measurements | none | none | none | none |