NASA - NMT Eddy Correlation systems in Albuquerque, NM
For data access please contact Kristi Arsenault at NASA Goddard Space Flight Center in Greenbelt, MD.
Two eddy correlation towers were set up in Albuquerque, NM with nearly identical instrumentation in March 2005 (field work report). Data is available since November 2005 after several modifications in datalogger program and sensor configuration by Jan Kleissl, New Mexico Tech.
| Nature Center | Candelaria Farms | |
| Tower ID | NC | CF |
| Target ecosystem | Rio Grande | Alfalfa |
| GPS Latitude WGS84 | 35^o 07.547' N | 35^o 07.990' N |
| GPS Longitude | 106^o 41.409' W | 106^o 40.687' W |
| GPS Altitude | 4978 ft | 4994 ft |
| Magnetic Declination | 9.9 E | 9.9 E |
| Wind direction | ideal: 233, no flow distortion by tower/sensors: 172 - 333 wind direction analysis |
ideal: 248, SW alfalfa field: 203-283, no flow distortion
by tower/sensors: 110 - 331 |
| Photos | 4/26/06: looking Sward, 5/29/06: Licor Intercomparison | Map, 11/13/05: Tower from SE, 4/26/06: Alfalfa fields from E, Tower from E |
| Sensors |
CSAT3 - u,v,w |
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| Apogee IRTS-Tp5 - Tsfc Kipp&Zonen CNR1 - Rul, Rdl, Rus, Rds TE525 |
2x Apogee IRTS - Tsfc Kipp&Zonen CM21&CG4 - Rul, Rdl, Rus, Rds Geonor T-200 - rain TCAV - soil T |
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Data:
| CF | NC | |
| Hydra Soil Probes (final) | Nov2005-April2006 | Nov2005-May2006 |
| Met & Energy Balance (raw) | Nov2005-April2006 | Nov2005-May2006 |
| Met & Energy Balance (preprocessed) |
The table shows daily energy balance for selected days at CF
| Daily Energy Balance | no SHF readings so far --> under construction |
Daily averages of the energy balance at CF
The first column is YYYY/MM/DD. Subsequent columns display the number
of samples per day and the average value of different variables:
2-3: Rnet from CM21/CG4, 4-5: Rnet from NRLite, 6-7: H from FWTC, 8-9: H from
CSAT using virtual temperature, 10-11: LE, 12-13 SHF, 14: Rnet from NRLite - Hs
- LE
14: number of samples with 203 < wdir < 283 (from SW alfalfa field)
15: number of sample with 110 < wdir < 331 (from different alfalfa fields, but
no flow distortion from other sensors)
Plot of daily averages of R vs. H+LE
The table shows monthly plots of meteorological variables at CF together with wind, T, p data from ABQ airport:
| 2005 | 11/8 - 11/12 | November | December | January | February | March | April | 4/22 - 4/26 | ||
| Energy Balance |
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no data | no data |
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| Radiation |
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no data | no data |
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| Turbulent heat fluxes |
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no data | no data | no data |
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| w'CO2', CO2, H2O |
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no data | no data | no data |
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| CSAT3 |
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no data | no data | no data |
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| T, RH |
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no data | no data |
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| Wind speed & direction |
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no data | no data |
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| Battery, p, rho_air |
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no data | no data |
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| Precip, soil heat flux | SHF broken | SHF broken | SHF broken | SHF broken | SHF broken | SHF broken | SHF reinstalled 4/28 | |||
| Soil Temperature |
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no data | no data |
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| Soil moisture |
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no data | no data |
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| Soil conductivity |
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no data | no data |
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| Soil salinity |
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no data | no data |
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The table shows daily energy balance at NC. The footprints of net radiation and turbulent heat fluxes are very different (e.g. Rio Grande river for H, LE vs. grass for Rnet, G), so energy balance closure is not expected.
| Daily Energy Balance |
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 |
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Daily averages of the energy balance at
NC
The first column is YYYY/MM/DD. Subsequent columns display the number
of samples per day and the average value of different variables:
2-3: Rnet from CM21/CG4, 4-5: Rnet from NRLite, 6-7: H from FWTC, 8-9: H from
CSAT using virtual temperature, 10-11: LE, 12-13 SHF, 14: Rnet from NRLite - Hs
- LE
14: number of samples with ?? < wdir < ?? (from Rio Grande)
15: number of sample with 172 < wdir < 333 (from Rio Grande or banks of
Rio Grande, but
no flow distortion from other sensors)
Plot of daily averages of R vs. H+LE
The table shows weekly plots of meteorological variables at NC
| 2005 | 11/8 - 11/12 | October | November | Dec | Jan | Feb | March | Apr | May | 5/25 - 5/29 | |
| Energy Balance |
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| Radiation |
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| Turbulent heat fluxes |
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| w'CO2', CO2, H2O |
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| CSAT3 |
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| T, RH |
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| Wind speed & direction |
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| p, rho_air |
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| Precip, soil heat flux |
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| Soil Temperature |
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| Soil Moisture |
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| soil conductivity |
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| Soil salinity |
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