| Instrumentation Summary for the USGS 33-m Tower. | ||||||
| For a webpage with links to many manufacturers try NCAR/ATD ISSF | ||||||
| Variable Name | Description | Units | Location | Sample Rate | Sensor | Notes |
|---|---|---|---|---|---|---|
| co2, h2o | CO2/H2O mixing ratio | mg/m^3, g/m^3 | 1, 3, 6, 10, and 33m (inlets) | 10-hz | Li-Cor 7000 | closed path IR gas analyzer |
| co2, h2o | CO2/H2O mixing ratio | mg/m^3, g/m^3 | 2 m | 10-hz | ATDD/NOAA IRGA | open path IR gas analyzer |
| co2, h2o | CO2/H2O mixing ratio | mg/m^3, g/m^3 | 33 m | 10-hz | LiCor 6262 | closed path IR gas analyzer |
| h2o | Water Vapor Density | g/m^3 | 2m and 33m | 10-hz | Campbell KH-20, Krypton Hygrometer | |
| ws, wd, tc | Wind Speed, Direction, Virtual Temperature (sonic) | m/s, deg, degC | 2m and 33m | 10-hz | Campbell Scientific, CSAT-3 | |
| ws, wd | Wind Speed and Direction | m/s, deg | 1, 3, 6, and 10m | 1-hz | Handar 2-D Sonics, model=? | |
| WS, WD | Wind Speed and Direction | m/s, deg | 33m | 1-hz | Cup and Vane, model=? | |
| T, RH | Temperature, Rel. Humidity | C, % | 2m, 10m, and 33m | 1-hz | Vaisala, model=? | |
| P | Barometric Pressure (absolute) ?? | mb | ?? | 1-hz | ?? | |
| Rnet | Net Radiation | W/m^2 | 33m | 1-hz | ?? | |
| PAR | Photosynthetically Active Radiation | micromol m^-2 s^-1 | 33m | 1-hz | Li-Cor, Li-190SA | silicon photodiode, 0.4-0.7 microns |
| Rsw.in | Incoming Shortwave ?? | W/m^2 | 25.5m (Upward Looking) | 1-hz | Kipp and Zonen, CNR-1 | On ~2m boom, 0.3-3 micron |
| Rsw.out | Outgoing Shortwave ?? | W/m^2 | 25.5m (Downward Looking) | 1-hz | Kipp and Zonen, CNR-1 | On ~2m boom, 0.3-3 micron |
| rainr | Rain Rate ?? | mm | 10.5m | 1-hz | Met One, #385-L | heated tipping bucket |