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
wind direction analysis

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
Licor 7500 - h2o, co2
Hukseflux shfp01sc - shf
Kipp&Zonen NRLite - Rnet
Vaisala HMP45 - T, RH
RM Young 05103 - wspd, wdir
3x Vitel Hydra Probes - Soil T, salinity, moisture at 5, 25, 50 cm

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

Field Logbook:   CF   NC

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 no data no data    
Radiation no data no data    
Turbulent heat fluxes no data no data no data    
w'CO2', CO2, H2O no data no data no data    
CSAT3 no data no data no data    
T, RH no data no data    
Wind speed & direction no data no data    
Battery, p, rho_air no data no data    
Precip, soil heat flux SHF broken SHF broken SHF broken SHF broken SHF broken SHF broken SHF reinstalled 4/28      
Soil Temperature no data no data      
Soil moisture no data no data      
Soil conductivity no data no data      
Soil salinity no data no data      

 

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  

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  
Radiation    
Turbulent heat fluxes  
w'CO2', CO2, H2O  
CSAT3  
T, RH  
Wind speed & direction  
p, rho_air  
Precip, soil heat flux  
Soil Temperature      
Soil Moisture      
soil conductivity      
Soil salinity