Dbm7

site TODO list

• record as-built wiring of soil sensors
• Flex conduit as needed

• Site needs new SR50 (spring 2008)
• measure distance from ground to SR50

site logs

9 Sept 2008, 3:22pm ADT Emily

• SR50 sensor looks good
• Sr50 distance to ground before trimming grass ranged from 117-122 cm, avg 120
• Added bark chips and trimmed vegetation, new avg distance is 112 cm,
• Changed SR50_ht in program from 120 cm to 112 cm
• Net radiometer was reading 0. Unwired and rewired but it didn't work
• Changed out net radiometer, pulled wire out of 1/2" flex conduit and then buried new

cable (not in conduit except at the sensor end and the tripod/instrument shelter end (~5 ft on each end)

• New S/N 72731 radiometer. Constant changed back at the lab from old 14.9 to new 12.9 uV/W/m2
• might want to try to rebury radiometer cable in conduit next trip. Need 3/4 " conduit.
• Flew over Shell Pingo and it look fine. Fence intact.

15 Jun 2008, emily & Ken

• replaced sr50 snow sensor, new s/n c4384
• new sr50 distance to ground is 120 cm and changed it in program
• installed new electric fence (removed from dfr1)
• replace hmp45c head, new s/n c3210005 cal. Aug 2007
• added conduit/shielding

14 Jun 2008, emily ken

• site visited, bear damage obvious
• guy wires loose on radiometer/snow tower
• hmp45c housing bent down
• snow sensor avg dist to ground 113.5 cm
• conduit needed, bear fence needed, shielding

14 June 2007, Ken I., Doug K.

• brief stop at site; notes made in field book the next day

• tripod look OK on quick look

• radiation pole leaning
  • one guy anchor (north) pulled
  • another guy turnbuckle was apart -- presumably unscrewed by wind/vibration

• adjusted 3rd (cast alumninum) turnbuckle to show some threads -- was at end of bolt

• drove 18-inch rebar at north anchor
  • reset turnbuckle on SW guy

• rad pole firmly frozen/set in ground
  • pushed (bent) pole to near-plumb

• radiometer mount failed with 2 lower ears bent, one cracked
  • reset mount to level radiometer
  • presume bear caused this damage

• snow depth height: 119 cm

• radiometer height: 119 cm