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December

1999

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28

JD332

29

JD333

30

JD334

1

JD335

2

JD336

3

JD337

4

JD338

5

JD339

6

JD340
Site Visit (AT): Details

at 11:30, co2/span regulator seems bad (need to replace!)

7

JD341

8

JD342

9

JD343

10

JD344

11

JD345

12

JD346
at 11:53, duck stopped logging data

13

JD347
Site Visit (AT): Details

at 13:45, swapped N2/zero cal cylinder

at 14:00, new co2/span regulator; reset flows in EC/LI-6262 system

Duck died

14

JD348
Site Visit (AT): Details

at 12:17, data system back up and running

15

JD349

16

JD350

17

JD351
Site Visit (AT): Details

Flow rate test in SECLOD

18

JD352

19

JD353

20

JD354

21

JD355
Winter Solstice

22

JD356

23

JD357

24

JD358

25

JD359

26

JD360
N2/zero cal cylinder runs out

27

JD361

28

JD362
Site Visit (AT): Details

at 11:00, swapped N2/zero cal cylinder

at 13:00, swapped span gas cylinder

found leak in EC/LI-6262 system (should explain why cal gases run out so quickly)

manual zero/span of EC/LI-6262 system

Snowpack depth=0.3m (12")

29

JD363

30

JD364

31

JD365

1

JD1