SRRL PWV Instrument Descriptions and Histories
Model | Measurement Notes (below) |
Units | Install Date |
Removal Date |
Current SN |
Current CF |
---|---|---|---|---|---|---|
(calc) | Precipitable Water (PW) and PW error | mm | 06/13/2012 | - | - | - |
Precipitable Water amount and the associated error from the estimation process. | ||||||
(calc) | Zenith Wet Delay (ZWD) | mm | 06/13/2012 | - | - | - |
Estimated in GPS analysis software. Directly scalable to PW. | ||||||
(calc) | Zenith Hydrostatic Delay (ZHD) | mm | 06/13/2012 | - | - | - |
Computed from surface pressure measurements. | ||||||
(calc) | Zenith Total Delay (ZTD) | mm | 06/13/2012 | - | - | - |
Sum of ZWD and ZHD | ||||||
(calc) | K-factor | unitless | 06/13/2012 | - | - | - |
dimensionless scale factor between ZWD and PW | ||||||
278 | Surface pressure | mBar | 06/13/2012 | - | - | - |
Measured using SRRL BMS Setra analog pressure sensor by Campbell datalogger, which is collected by MIDC data acquisition every 3-seconds, then converted to an ASCII string which is sent via RS-232 to the Trimble Net9R as requested (every 60 seconds), see the SRRL BMS Instrument page for more information regarding the sensor. As of 4/27/2015, Campbell data logger now sends ASCII pressure string direct to Trimble via UDP. | ||||||
Notes:
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[NREL] [MIDC] [SRRL PWV]