Difference between revisions of "August 2014 Barrow"
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* CNR4 Net Radiometers | * CNR4 Net Radiometers | ||
** One for B (the original) | ** One for B (the original) | ||
− | ** retap the D screws and if I can't get that to work then move the | + | ** retap the D screws and if I can't get that to work then move the altern |
+ | * ate radiometer from inventory (B) to D. | ||
Line 104: | Line 105: | ||
* green long underwear top | * green long underwear top | ||
* black windproof vest | * black windproof vest | ||
+ | |||
+ | ===Wrap up notes=== | ||
+ | * Precip stands seem to be levelest at A & C so might be best to use them. | ||
+ | * most net radiometers were close to level. | ||
+ | * Look into buying more tap & die drill bits & the alternate type that dead end flat like Bill mentioned. | ||
+ | * see about buying more of the SR50A screws that secure the disposable transducer to the main body. | ||
+ | * The C site Net radiometer will need to be tap & drilled on the next trip. I greased all but one screw on this trip but it was stripped on the head. | ||
+ | * should grease all hardware (the main ones like SR50A, net radiometer etc) annually. | ||
+ | * with things stable, should retrieve current programs and make sure git archive is up to date. | ||
+ | |||
+ | |||
+ | ===Program note=== | ||
+ | Just a quickie. From CR signature checker: | ||
+ | Program Signatures Values, match with the 7th field in the first line of the .dat file | ||
+ | 60958 GRID_SITE.CR1 | ||
+ | 27520 ngee_intensive_site_A.CR1 | ||
+ | 26235 ngee_intensive_site_B.CR1 | ||
+ | 47521 ngee_intensive_site_C.CR1 | ||
+ | 6216 ngee_intensive_site_D.CR1 | ||
+ | majestic:barrow bob$ | ||
+ | A matches the logger (as viewed in logger net -> status table | ||
+ | B matches the logger (as viewed in logger net -> status table | ||
+ | C matches the logger (as viewed in logger net -> status table | ||
+ | D matches the logger (as viewed in logger net -> status table | ||
+ | ... D doesn't match the data file though and I guess that is where I got hung up. The data file didn't increment along with the change of the program signature for the D site. | ||
+ | |||
+ | ===Post Trip Notes from Fieldbook=== | ||
+ | @ A | ||
+ | * A trough snow mount to corroded to remove so replaced transducer in-place | ||
+ | * Level Net Radiometer (It was close) | ||
+ | * Level Precip (Also close to level) | ||
+ | * Added anti-corrosion goo to net radiometer screws & connections | ||
+ | * Changed desiccant in the box | ||
+ | * Tools Used for Precip bucket leveling: | ||
+ | ** 5/16" Nut Driver | ||
+ | ** Torpedo Level | ||
+ | * Tools Used for Snow transducer maintenance: | ||
+ | ** 1/2" Nut Driver | ||
+ | ** Flathead Screwdriver / 1/4" Nut Driver | ||
+ | ** channel locks | ||
+ | ** phillips screw driver | ||
+ | * In-memory reset of snow depth offset | ||
+ | ** SR50A1 = 182.1 | ||
+ | ** SR50A2 = 126.75 | ||
+ | |||
+ | @ B | ||
+ | * Level Net Radiometer | ||
+ | * Swap back original net radiometer | ||
+ | * add anti-corrosion goo to radiometer & lower anemometer | ||
+ | * level precip (it was quite a ways off) | ||
+ | * change snow transducers | ||
+ | * Changed desiccant in the box | ||
+ | * In-memory reset of snow depth offset | ||
+ | ** SR50A1 = 177.5 | ||
+ | ** SR50A2 = Unchanged from program | ||
+ | |||
+ | @ C | ||
+ | * C Trough snow mount to corroded to remove from the mount so transducer replaced on existing sensor | ||
+ | * Precip still level | ||
+ | * Net Radiation Leveled | ||
+ | ** 1 screw is stripped on the C net radiometer so I will need to bring the tap & die up on the next trip to fix that. | ||
+ | * Changed desiccant in the box | ||
+ | * Anti-corrosion goo added to net radiometer and lower anemometer | ||
+ | * In-memory reset of snow depth offset | ||
+ | ** SR50A1 = Unchaged from program | ||
+ | ** SR50A2 = 115.0 | ||
+ | ** SR50A3 = 117.3 | ||
+ | |||
+ | @ D | ||
+ | * Changed net rad desiccant & leveled | ||
+ | * swapped snow transducer, deployed S/N 2901 | ||
+ | * Think I figured out the thermal conductivity problem. | ||
+ | * In-memory reset of snow depth offset | ||
+ | ** SR50A1 = 159.7 | ||
+ | |||
+ | Additionally: | ||
+ | * I think A & C precip are probably the highest quality (most stable stands). | ||
+ | * C net radiation will need a fix for the stripped out screw next visit | ||
+ | * Averaged 30 minutes per site. | ||
+ | * Ended up not having wheelbarrow access but we had no problem carrying things out. |
Latest revision as of 10:25, 29 August 2014
To Do:
- Change out snow transducers, 8 pieces
- swap back the B site net radiometer
- change out desiccant in the D site radiometer
- level radiometers
- Fix C site Rim Snow Sensor
- D Thermal Conductivity
- Program works fine in Fairbanks
- OKAY... Look at how it is wired in the field. / in pictures. I think there are two pulse port instructions when there should be just one.
To Bring:
- CNR4 Net Radiometers
- One for B (the original)
- retap the D screws and if I can't get that to work then move the altern
- ate radiometer from inventory (B) to D.
Plan:
Code: FDVIBG
Depart Thursday morning @ 7:40am
Return Friday night @ 12:21 AM
Contents
Thursday
- @ airport by 6ish
- grab coke in Fairbanks airport
- Arrive at NARL around 11am
- get keys and dress for day in field
- wind breaker
- backpack ready to go
- lunch for the day
- Water bottle, fill it
- actionpacker with:
- 8 snow sensors
- toolbag
- net radiometer for B
- drill for tapping D radiometer if needed
- 6/32 screw for D
- also bringing a 4/32 screw & tap for backup.
- serial cable
At each site
- level radiometer
- level precip bucket
- look at leveling tower / anemomemters
- listen to anemometers for bearing problems
- swap out desiccant in the box
- might double-check serial numbers if there is time
- more pictures
Additionally
- At B swap back in original radiometer
- At C fix the Rim snow sensor
- At D change out the desiccant in the radiometer
Tools used
- Desiccant swap:
- None
- Net Radiometer
- phillips screw driver
- anti-oxidizing goo
- Precip bucket
- 5/16" nut driver on hose clamp and self-tapping screw on the bucket lid
- torpedo level
- snow sensors
- Phillips screw driver (had on hand 3)
- channel locks
- 1/4" nut driver
- flat screw driver
- 1/2" nut driver
- red electrical tape
- Also had on hand:
- serial cable
- laptop
- voltmeter
- cr1000 keypad
- csi flat screw driver
- small 1.5m tape
- tap & die set (for net radiometer, not used this trip)
- multitool
- duct seal
- cable ties
Backpack contents=
- 8 snow sensors
- tool bag with tools above
- first aid kit
- rain coat
- ultrapod
- gopro & extra battery
- waterproof pack cover
- toughbook
- extra serial cable
- snug hat
- mouth balaclava
- gopro chest mount
- this check list page
- water bottle
- five bar snacks
- Extra desiccant (shoot for replacing at least annually and 2-4 packs per trip)
- bike stereo & stereo cable plus ipod in waterproof bag
- 2 pairs of liner gloves
- gray fleece
- green long underwear top
- black windproof vest
Wrap up notes
- Precip stands seem to be levelest at A & C so might be best to use them.
- most net radiometers were close to level.
- Look into buying more tap & die drill bits & the alternate type that dead end flat like Bill mentioned.
- see about buying more of the SR50A screws that secure the disposable transducer to the main body.
- The C site Net radiometer will need to be tap & drilled on the next trip. I greased all but one screw on this trip but it was stripped on the head.
- should grease all hardware (the main ones like SR50A, net radiometer etc) annually.
- with things stable, should retrieve current programs and make sure git archive is up to date.
Program note
Just a quickie. From CR signature checker: Program Signatures Values, match with the 7th field in the first line of the .dat file
60958 GRID_SITE.CR1 27520 ngee_intensive_site_A.CR1 26235 ngee_intensive_site_B.CR1 47521 ngee_intensive_site_C.CR1 6216 ngee_intensive_site_D.CR1 majestic:barrow bob$ A matches the logger (as viewed in logger net -> status table B matches the logger (as viewed in logger net -> status table C matches the logger (as viewed in logger net -> status table D matches the logger (as viewed in logger net -> status table ... D doesn't match the data file though and I guess that is where I got hung up. The data file didn't increment along with the change of the program signature for the D site.
Post Trip Notes from Fieldbook
@ A
- A trough snow mount to corroded to remove so replaced transducer in-place
- Level Net Radiometer (It was close)
- Level Precip (Also close to level)
- Added anti-corrosion goo to net radiometer screws & connections
- Changed desiccant in the box
- Tools Used for Precip bucket leveling:
- 5/16" Nut Driver
- Torpedo Level
- Tools Used for Snow transducer maintenance:
- 1/2" Nut Driver
- Flathead Screwdriver / 1/4" Nut Driver
- channel locks
- phillips screw driver
- In-memory reset of snow depth offset
- SR50A1 = 182.1
- SR50A2 = 126.75
@ B
- Level Net Radiometer
- Swap back original net radiometer
- add anti-corrosion goo to radiometer & lower anemometer
- level precip (it was quite a ways off)
- change snow transducers
- Changed desiccant in the box
- In-memory reset of snow depth offset
- SR50A1 = 177.5
- SR50A2 = Unchanged from program
@ C
- C Trough snow mount to corroded to remove from the mount so transducer replaced on existing sensor
- Precip still level
- Net Radiation Leveled
- 1 screw is stripped on the C net radiometer so I will need to bring the tap & die up on the next trip to fix that.
- Changed desiccant in the box
- Anti-corrosion goo added to net radiometer and lower anemometer
- In-memory reset of snow depth offset
- SR50A1 = Unchaged from program
- SR50A2 = 115.0
- SR50A3 = 117.3
@ D
- Changed net rad desiccant & leveled
- swapped snow transducer, deployed S/N 2901
- Think I figured out the thermal conductivity problem.
- In-memory reset of snow depth offset
- SR50A1 = 159.7
Additionally:
- I think A & C precip are probably the highest quality (most stable stands).
- C net radiation will need a fix for the stripped out screw next visit
- Averaged 30 minutes per site.
- Ended up not having wheelbarrow access but we had no problem carrying things out.