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USVI Met Tower Instrument Descriptions and Histories


Model Measurement
Notes (below)
Units Install
Date
Removal
Date
Current
SN
Current
CF
LI-200 Global Horizontal (Bovoni 2) W/m2 12/13/2012 08/25/2014 PY75521 -114.12 W/m2/mV
Measured using a LICOR LI-200 Pyranometer mounted to the south of the tower. Voltage is measured across a 100 Ohm precision resistor in parallel to sensor output. The second "Ref" measurement is for NREL calibration check purposes and should not be used by the user.
#110S Dry Bulb Temperature (Bovoni 2) oC 12/13/2012 08/25/2014 - 0.05555 oC/mV-86.38oC
Outside air temperature inside in a naturally aspirated radiation shield mounted at 2 meters.
#40C Wind Speed (Bovoni 2) m/s 12/13/2012 08/25/2014 - 0.769 m/s/Hz+0.36 m/s
0.765 m/s/Hz+0.36 m/s
0.768 m/s/Hz+0.35 m/s
0.769 m/s/Hz+0.35 m/s
0.765 m/s/Hz+0.31 m/s
0.769 m/s/Hz+0.36 m/s
Measured by (6) calibrated NRG 3-cup anemometers at 58, 47, and 32 meters (at both 45 and 135 degree boom orientations [TN]). The peak wind speed is also recorded, which is the peak 1-second reading during the 1-minute interval. Note: Data from 45 TN are used with the MIDC Wind Roses.
#200P Wind Direction (Bovoni 2) degrees 12/13/2012 08/25/2014 - 360 o/mV+90 o
Measured by (2) NRG wind vanes mounted at 52 and 35 meters. Notice: Data has been mis-labeled as 58 and 32 meters to allow the measurements to be compatible with MIDC Wind Roses.
#BP20 Station Pressure (Bovoni 2) mBar 12/13/2012 08/25/2014 - 0.2179 mBar/mV+109.8mBar
The station pressure is measured by a NRG sensor mounted at a height of 2 meters.
CR1000 CR1000 Battery Voltage (Bovoni 2) V 12/13/2012 08/25/2014 - -
The CR1000 battery voltage. Battery is charged by PV panel.
CR1000 CR1000 Temperature (Bovoni 2) oC 12/13/2012 08/25/2014 - -
Temperature of CR1000 datalogger panel. Logger is mounted inside weatherproof enclosure.
LI-200 Global Horizontal (Longford) W/m2 12/13/2012 03/15/2013 PY75520 -110.21 W/m2/mV
05/03/2013 12/20/2013 PY75523 119.90 W/m2/mV
Measured using a LICOR LI-200 Pyranometer mounted to the south of the tower. Voltage is measured across a 100 Ohm precision resistor in parallel to sensor output. The second "Ref" measurement is for NREL calibration check purposes and should not be used by the user.
#110S Dry Bulb Temperature (Longford) oC 12/13/2012 12/20/2013 - 0.05555 oC/mV-86.38oC
Outside air temperature inside in a naturally aspirated radiation shield mounted at 2 meters.
#40C Wind Speed (Longford) m/s 12/13/2012 12/20/2013 - 0.767 m/s/Hz+0.38 m/s
0.768 m/s/Hz+0.37 m/s
0.769 m/s/Hz+0.37 m/s
0.770 m/s/Hz+0.35 m/s
0.768 m/s/Hz+0.36 m/s
0.768 m/s/Hz+0.35 m/s
Measured by (6) calibrated NRG 3-cup anemometers at 58, 47, and 32 meters (at both 45 and 135 degree boom orientations [TN]). The peak wind speed is also recorded, which is the peak 1-second reading during the 1-minute interval. Note: Data from 45 TN are used with the MIDC Wind Roses.
#200P Wind Direction (Longford) degrees 12/13/2012 12/20/2013 - 360 o/mV+90 o
Measured by (2) NRG wind vanes mounted at 53 and 34 meters. Notice: Data has been mis-labeled as 58 and 32 meters to allow the measurements to be compatible with MIDC Wind Roses.
#BP20 Station Pressure (Longford) mBar 12/13/2012 12/20/2013 - 0.2179 mBar/mV+107.5mBar
The station pressure is measured by a NRG sensor mounted at a height of 2 meters.
CR1000 CR1000 Battery Voltage (Longford) V 12/13/2012 12/20/2013 - -
The CR1000 battery voltage. Battery is charged by PV panel.
CR1000 CR1000 Temperature (Longford) oC 12/13/2012 12/20/2013 - -
Temperature of CR1000 datalogger panel. Logger is mounted inside weatherproof enclosure.
Notes:
  • Data Sample rate is every 1 seconds with 1-minute average output.
  • The CR1000 is a table based operating system, data is converted from table to classic format after data collection, also any non-numeric values are converted to -99999.
  • Communications uplink is turned off at night to conserve battery power, therefore data will not update at that time.

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