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September

2018

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26

JD238

27

JD239

28

JD240

29

JD241

30

JD242

31

JD243

1

JD244

2

JD245

3

JD246
SpB Returns

4

JD247

5

JD248

6

JD249

7

JD250

8

JD251

9

JD252

10

JD253

11

JD254
road above C-1 closed for repairs

12

JD255
NWT/LTER Meeting (2:30 - 4pm, SEEC, S228)

road above C-1 closed for repairs

13

JD256
Site Visit (SpB, DA, +): Details , Photos (48)

Span cylinder at 600 psi (valve closed). N2 at 350 psi (valve closed)

from 8:30-9:25 MST, eletricity to tower cut; power lines to USGS tower removed

from 12:15-12:30 MST, swapped inlet assembly for LI-7200 (now using heated one)

from 13:00-13:30 MST, removed LI-6262 (gast pump turned off)

checked tower guy wire tensions (see notes)

SpB Prius

Clear skies, warm

14

JD257

15

JD258

16

JD259

17

JD260

18

JD261

19

JD262

20

JD263
In Lab/Cristol (SpB): Details

booted the spare PC-104/titan as "titan2", tested the new usb cable, added spare ext3 thumb drive

now ingesting data from titan2 as "niwot_dreamplug" (started ops91)

data loggers used: cr23x_sn2262 (lab_01.csi) and cr10x_snX14042 (ncar_1f.csi)

Photos from Lab/Cristol:

Titan (usb cable) ,

Titan ,

Data loggers

21

JD264

22

JD265
Fall Equinox

23

JD266

24

JD267

25

JD268

26

JD269

27

JD270
Site Visit (SpB, MR, DA): Details , Photos (27)

Span cylinder (valve closed). N2 at 350 (valve closed)

moved 6 N2 gas cylinders from MRS to C-1 trailer:

moved 2 co2 span gas cylinders from MRS to C-1 trailer:

moved 1 empty N2 cylinder from C-1 to MRS: cc443821

Installed new subcanopy radiation (apogee) sensors with MR (started ops92 and ucb_19.csi)

DA was removing the USGS "north" tower

Enterprise SUV

Warm, some wind and clouds

28

JD271

29

JD272

30

JD273

1

JD274

2

JD275

3

JD276
Site Visit (SpB, DA+): Details , Photos (26)

Span cylinder at 550 psi, N2 at 250 psi

from 11:00-12:30 MST, re-installed the re-calibrated LI-6262

Changed the fast logger program so all data are output with "High Resolution" (fast_26.csi)

Changed the ucb logger program (ucb_20.csi, minor change to thermistor excitation voltage)

Started ops93 (but no change to niwot.xml)

found a few more "NW B" trees (see photos)

DA was cleaning up the power cable

SpB Prius

Variable, warm with some wind gusts

4

JD277
from approx 13:00-14:00 MST, short power/network outage at the site (everything appears to have come back ok)

5

JD278

6

JD279