Difference between revisions of "August 2014 Barrow"

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Line 7: Line 7:
 
* D Thermal Conductivity
 
* D Thermal Conductivity
 
** Program works fine in Fairbanks
 
** Program works fine in Fairbanks
** Data Points From April Trip:
+
** 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.
*** Heater Resistance #1 -- 68.2 ohms
 
*** Heater Resistance #2 -- 70.2 ohms
 
*** Heater Resistance #3 -- 70.4 ohms
 
*** Heater Resistance #4 -- 70.7 ohms
 
*** Heater Resistance #5 -- 69.1 ohms
 
*** Heater Resistance #6 -- 70.3 ohms
 
*** Thermal conductivity thermistor resistance #1 -- 57.6 kohms
 
*** Thermal conductivity thermistor resistance #2 -- 57.8 kohms
 
*** Thermal conductivity thermistor resistance #3 -- 58.2 kohms
 
*** Thermal conductivity thermistor resistance #4 -- 57.5 kohms
 
*** Thermal conductivity thermistor resistance #5 -- 58.0 kohms
 
*** Thermal conductivity thermistor resistance #6 -- 58.4 kohms
 
* 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 but I don't know for sure until I review the photos / see it in person.
 
* Basically there are two
 
 
To Bring:
 
To Bring:
 
* 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 alternate radiometer from inventory to D.
+
** 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 33: Line 20:
 
Return Friday night @ 12:21 AM
 
Return Friday night @ 12:21 AM
  
Thursday
+
===Thursday===
 +
* @ airport by 6ish
 
* grab coke in Fairbanks airport
 
* grab coke in Fairbanks airport
 
* Arrive at NARL around 11am
 
* Arrive at NARL around 11am
Line 40: Line 28:
 
** backpack ready to go
 
** backpack ready to go
 
** lunch for the day  
 
** lunch for the day  
** Water bottle  
+
** Water bottle, fill it
**
 
 
** actionpacker with:
 
** actionpacker with:
 
*** 8 snow sensors
 
*** 8 snow sensors
Line 47: Line 34:
 
*** net radiometer for B
 
*** net radiometer for B
 
*** drill for tapping D radiometer if needed
 
*** drill for tapping D radiometer if needed
*** 6/32 screw for
+
*** 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.

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

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.