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September

2000

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27

JD240

28

JD241

29

JD242

30

JD243

31

JD244

1

JD245
Site Visit (AT): Details

Several tests of EC/LI-6262 system (replaced filter in EC box, back on at 13:29)

from 14:00-16:20, moved prof lower inlets to subcanopy/mini tower

new program in SOIL logger (removed sap flow?)

2

JD246

3

JD247

4

JD248

5

JD249

6

JD250

7

JD251
Site Visit (AT): Details

co2 prof system has been on "manual" mode since 8/22/00??

increased size of ballast in EC/LI-6262 system

8

JD252
Site Visit (AT): Details

at 11:04, changed profiler (li-6251) dessicant

from 11:20-11:49, added CSAT3 at 4m to subcanopy mini-tower

new OPS file includes: *_csi_4m data in covars

UC logger outputs 10 things --- wind speed --> final storage #2 (is this a CR21X?)

checked power usage at tower: Duck < 1A, Bottom= 5A, Mid= 2.5A, Top= 1A

from 14:30-15:00, re-leveled Rnet and CNR radiometers using tiltmeter (see AT logbook for diagram)

9

JD253

10

JD254

11

JD255

12

JD256

13

JD257

14

JD258

15

JD259
Site Visit (AT): Details

at 13:00, ingested digital data from EC/LI-6262 (0V= 300 ppm; 5V=500 ppm)

at 14:30, cleaned krypton hygrometer

at 15:00, moved LI-7500 closer to tower

16

JD260

17

JD261

18

JD262
Site Visit (AT): Details

at 11:35, swapped span gas cylinder

at 11:00, stopped outputting digital data from EC/LI-6262 (power spectra looked odd)

from 11:45-12:00, added voltage divider to CO2 from LI-6262 (drops co2.ec from 1000 mV to 500 mV)

19

JD263

20

JD264

21

JD265

22

JD266
Fall Equinox

23

JD267

24

JD268

25

JD269

26

JD270
Site Visit (AT): Details

LI-7500 in trailer

from 10:31-11:00, replaced LI-6262 in EC system with a LI-6251 sn 308 (no more water vapor fluxes), [switched back to LI6262 (sn 638) on 10/09/00]

from 10:15-10:30, downloaded MET logger data

from 11:10-11:44, downloaded PROF logger data

from 13:00-13:30, downloaded CNR logger data

from 11:50-12:00, new FAST logger program (FAST23X.CSI); no SDM for LI-7500, changed voltage ranges

27

JD271

28

JD272

29

JD273

30

JD274