Niwot Ridge, Colorado, United States [NWR]
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Location
DataCooperating Agencies |
University of Colorado/INSTAAR
Description
Niwot Ridge is located approximately 35 km west of Boulder, Colorado, with the entire study site lying above 3000 m elevation. There is a cirque glacier (Arikaree Glacier), extensive alpine tundra, a variety of glacial landforms, glacial lakes and moraines, cirques and talus slopes, patterned ground, and permafrost. The research area is bounded on the west by the Continental Divide, with runoff on the two sides being destined for the Colorado and Mississippi Rivers. The alpine study area is reached by an unimproved road from the Mountain Research Station (2895 m) which leads to within 2 km of the main tundra research site, the Saddle (3528 m). Niwot Ridge, including the main alpine study site, is part of the Roosevelt National Forest and has been designated a Biosphere Reserve (United Nations Educational, Scientific and Cultural Organization, UNESCO) and an Experimental Ecology Reserve (USDA Forest Service).
The Niwot Ridge web site is at http://culter.colorado.edu/NWT/
GMD Projects at Niwot Ridge, Colorado
| Parameter | Formula | First Sample Date | Most Recent Sample Date |
|---|---|---|---|
| Carbon Dioxide | CO2 | 1968-01-16 | Ongoing |
| Methane | CH4 | 1983-06-21 | Ongoing |
| Carbon Monoxide | CO | 1988-12-13 | Ongoing |
| Molecular Hydrogen | H2 | 1989-01-10 | Ongoing |
| Nitrous Oxide | N2O | 1997-04-22 | Ongoing |
| Sulfur Hexafluoride | SF6 | 1997-04-22 | Ongoing |
| Carbon-13/Carbon-12 in Carbon Dioxide | d13C (CO2) | 1990-01-16 | Ongoing |
| Oxygen-18/Oxygen-16 in Carbon Dioxide | d18O (CO2) | 1990-01-23 | Ongoing |
| Carbon-13/Carbon-12 in Methane | d13C (CH4) | 1998-01-06 | Ongoing |
| Carbon-14/Carbon in Carbon Dioxide | D14C (CO2) | 2003-05-27 | Ongoing |
| D/H in Methane | dD (CH4) | 2005-05-24 | Ongoing |
| Methyl Chloride | CH3Cl | 2005-12-06 | Ongoing |
| Benzene | C6H6 | 2010-01-19 | Ongoing |
| toluene | C7H8 | 2010-01-19 | Ongoing |
| ethane | C2H6 | 2005-12-06 | Ongoing |
| ethene | C2H4 | 2005-12-06 | Ongoing |
| propane | C3H8 | 2005-12-06 | Ongoing |
| propene | C3H6 | 2010-01-19 | Ongoing |
| i-butane | i-C4H10 | 2005-12-06 | Ongoing |
| n-butane | n-C4H10 | 2005-12-06 | Ongoing |
| i-pentane | i-C5H12 | 2005-12-06 | Ongoing |
| n-pentane | n-C5H12 | 2005-12-06 | Ongoing |
| n-hexane | n-C6H14 | 2005-12-06 | Ongoing |
| wind speed | 1992-07-21 | Ongoing | |
| wind direction | 1992-07-21 | Ongoing | |
| ambient temperature | 2004-08-31 | Ongoing | |
| ambient pressure | 2006-12-14 | Ongoing | |
| relative humidity | 2006-12-14 | Ongoing | |
| isoprene | C5H8 | 2010-01-19 | Ongoing |
HATS Flask Sampling
HATS In Situ Observatory
| Parameter | Formula | First Sample Date | Most Recent Sample Date |
|---|---|---|---|
| Nitrous Oxide | N2O | 2000-11-08 | Ongoing |
| Sulfur Hexafluoride | SF6 | 2000-11-08 | Ongoing |
| HCFC-22 | CHF2Cl | 2000-11-08 | Ongoing |
| CFC-12 | CCl2F2 | 2000-11-08 | Ongoing |
| Methyl Chloride | CH3Cl | 2000-12-23 | Ongoing |
| HCFC-142b | CH3CF2Cl | 2000-11-08 | Ongoing |
| Halon-1211 | CBrClF2 | 2000-11-08 | Ongoing |
| CFC-113 | CCl2FCClF2 | 2000-11-08 | Ongoing |
| carbon tetrachloride | CCl4 | 2000-11-08 | Ongoing |
| Methyl Chloroform | CH3CCl3 | 2000-11-08 | Ongoing |
| CFC-11 | CCl3F | 2000-11-08 | Ongoing |
Surface Ozone
| Parameter | Formula | First Sample Date | Most Recent Sample Date |
|---|---|---|---|
| Ozone | O3 | 1990-07-26 | Ongoing |
Trajectories
NEUBrew UV and Ozone