Environmental conditions
Environment conditions data is collected using the Vaisala CO2, Thies Clima weather sensors as well as lightning, irrigation, and weather data collected at the Maricopa site.
Data formats follow the Climate and Forecast (CF) conventions for variable names and units. Environmental data are stored in the Geostreams database.
Data sources
WeatherStation coordinates are 33.074457 N, 111.975163 W
EnvironmentLogger is on top of the gantry system and is moveable.
Irrigation is managed at the field level. There are four regions that can be irrigated at different rates.
Data access
Level 1 data
Level 1 meteorological data is aggregated to from 1 Hz raw data to 5 minute averages or sums.
netCDF: 5s (12 per minute) observations
On Globus or Workbench you can find these data provided in both hourly and daily files. These files contain data at the original temporal resolution of 1/s. In addition, they contain the high resolution spectral radiometer data.
sites/ua-mac/Level_1/envlog_netcdf
hourly files:
YYYY-MM-DD_HH-MM-SS_environmentallogger.ncdaily files:
envlog_netcdf_L1_ua-mac_YYYY-MM-DD.nc
Geostreams: 5 minute observations
Data can be accessed using the geostreams API or the PEcAn meteorological workflow. These are illustrated in the sensor data tutorials.
Here is the json representation of a single five-minute observation:
Data can be accessed using the geostreams API or the PEcAn meteorological workflow.
These are illustrated in the sensor data tutorials.
Here is the json representation of a single five-minute observation from Geostreams:
[
{
"geometry":{
"type":"Point",
"coordinates":[
33.0745666667,
-111.9750833333,
0
]
},
"start_time":"2016-08-30T00:06:24-07:00",
"type":"Feature",
"end_time":"2016-08-30T00:10:00-07:00",
"properties":{
"precipitation_rate":0.0,
"wind_speed":1.6207870370370374,
"surface_downwelling_shortwave_flux_in_air":0.0,
"northward_wind":0.07488770951583902,
"relative_humidity":26.18560185185185,
"air_temperature":300.17606481481516,
"eastward_wind":1.571286062845733,
"surface_downwelling_photosynthetic_photon_flux_in_air":0.0
}
},Variable names and units
CF standard-name
units
bety
isimip
cruncep
narr
ameriflux
air_temperature
K
airT
tasAdjust
tair
air
TA (C)
air_temperature_max
K
tasmaxAdjust
NA
tmax
air_temperature_min
K
tasminAdjust
NA
tmin
air_pressure
Pa
air_pressure
PRESS (KPa)
mole_fraction_of_carbon_dioxide_in_air
mol/mol
CO2
moisture_content_of_soil_layer
kg m-2
soil_temperature
K
soilT
TS1 (NOT DONE)
relative_humidity
%
relative_humidity
rhurs
NA
rhum
RH
specific_humidity
1
specific_humidity
NA
qair
shum
CALC(RH)
water_vapor_saturation_deficit
Pa
VPD
VPD (NOT DONE)
surface_downwelling_longwave_flux_in_air
W m-2
same
rldsAdjust
lwdown
dlwrf
Rgl
surface_downwelling_shortwave_flux_in_air
W m-2
solar_radiation
rsdsAdjust
swdown
dswrf
Rg
surface_downwelling_photosynthetic_photon_flux_in_air
mol m-2 s-1
PAR
PAR (NOT DONE)
precipitation_flux
kg m-2 s-1
cccc
prAdjust
rain
acpc
PREC (mm/s)
degrees
wind_direction
WD
wind_speed
m/s
Wspd
WS
eastward_wind
m/s
eastward_wind
CALC(WS+WD)
northward_wind
m/s
northward_wind
CALC(WS+WD)
Raw Data
Data is available via Globus or Workbench:
/ua-mac/raw_data/co2sensor/ua-mac/raw_data/EnvironmentLogger/ua-mac/raw_data/irrigation/ua-mac/raw_data/lightning/ua-mac/raw_data/weather
Sensor information:
Computational pipeline
Description: EnvironmentalLogger raw files are converted to netCDF.
Known Issues
Known issue: the irrigation data stream does not currently handle variable irrigation rates within the field. Specifically, we have not yet accounted for the Summer 2017 drought experiments. See terraref/reference-data#196 for more information.
When the full field is irrigated (as is typical), the irrigated area is 5466.1 m2 (=215.2 m x 25.4 m)
In 2017:
Full field irrigated area from the start of the season to August 1 (103 dap) is 5466.1 m2 (=215.2 m x 25.4 m).
Well-watered treatment zones from August 1 to 15 (103 to 116 dap): 2513.5 m2 (=215.2 m x 11.68 m) in total, combined areas of non-contiguous blocks
Well-watered treatment zones from August 15 - 30 (116 to 131 dap): 3169.9 m2 (=215.2 m x 14.73 m), again in total as the combined areas of non-contiguous blocks
Github Issues
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