SS Site Visit 2021-10

Sensor Photo procedure

For recalibration swaps.

• Picture 1 = The new sensor being deployed
• Picture 2 = The old sensor being removed to send away for recalibration.

Partial Task List

• Ground anchor strengthening
• finish tracking power
• Replace CNR4s
• replace the anemometers starting from top
• pull out the eddy covariance units for recalibration
• replace geonor water / ethanol / antifreeze
  • I have written on the a bucket the ratio. Also need to dilute the mix so I can drop at dump.
• Hang the SWE sensor
• Add the NL100 to the network
• update the software
• 12V battery backups
• replace UPS batteries?

Activities

• 2021-10-06 12:00 AK DT -- changed liquids in the geonor. 8 liters 60/40 mix & 1 bottle baby oil
  • Removed like 5.3 gallons
    • (Which means that last year's mix amount for antifreeze was more than necessary). 5.3 gallons removed = Freezing point of bucket around -25C
  • 8 liters mix = 72.7 cm liquid with freezing point @ -40
    • Realistically we only need the 60/40 mix to go to -40 by around April 1 so 72.7cm is extreme overkill and maybe I'll reduce the volumes down the road.
  • Re leveled stand, too.
• Plugged in tipping bucket heater
• Remove Forest Floor LI7200
• Swap Tower LI7200 (But need to update the calibration info still)
• Add an HDMI switch for monitor.
• Swap out top 2 anemometers