ARCTAS

The purpose of this page is to serve as a repository of schedules and information for the participation of the Jimenez group in the ARCTAS campaign.

Personnel schedule on group calendar http://www.google.com/calendar/render.

Information on Phase I (past) is below for reference.

Summer Phase

Details to go here.

To-do List for ARCTAS

For Donna (in approx order of priority)

• Improve Squirreling of the Fast Mode data (F4 and/or F5)

For Mike

• Resubmit flight 4 w/o the filter periods
• Process fast data and resubmit with those
• Evaluate the O/C data from Allison
• Squirrel & submit test flights 1 & 2
• Document inlet geometry and lengths, calculate residence time
• Keep adding plane data to timetrace: work on m/z ratios, and add remaining important IWG parameters
  • Replot timetrace of all flights on this standard format, give copy to Jose for reference)

Instrument - High priority

• Test exhaust line (to LARGE) for leaks
• See whether we can afford extra pumping for increasing bypass or connecting the Grimm after doing this

• Write labels with usual parameters (VB, pumps, PID of PCI...)

• Start, mid-flight, and shutdown checklists

• Install all plane software on Mike's laptop, so that his personal laptop can serve as backup for plane laptop in case of catastrophic failure, and test that it works

• If we can afford the pumping, replumb the Grimm to sample through a critical orifice
  • install TSI flowmeter on this pumping line (filter ahead), log flow

Instrument - high priority, but waiting for others

• (Waiting for Thomas about TPS error message: uups... / data crc / rx error: 5)

Instrument - medium priority

• Get an install 2 bike cupholders
• Get soldering iron with a finer tip
• Connect UPS software for battery indication
• Backup all plane software on FTP site (including menus and .set files)

Data analysis - high priority

• Evaluate whether the different slopes with light scattering are due to size distribution changes (F8)
• Compare the Grimm OPC with the LARGE OPC and the SP2 OPC for periods of valid Grimm
  • SP2 people are very eager to compare with their volume (> 250 nm)
• Compare AMS size distributions with OPC / SMPS, to evaluate size transmission

Data analysis - medium priority

• Filter levels for Org (maybe also NO3, m/z 16) are variable in timetrace, check whether also in Squirrel and if so why)
• Implement the time-dependent CO2 and H2O corrections for the flights (or decide that they are not needed)
  • We can probably measure frag_org[18] directly in this way
• Use plumes to align our data to others

Before Summer Campaign

• Install HV supply for hard mirrow, so that we can run W-mode in forest fire plumes
• Bring 2 sets of 2 MCPs, change them before test flight (2nd set is spare)
• Be ready to submit data 48 hrs after each flight (24 better if possible)
• Fix 12 V power supply in TPS for preamp
• Be ready to intercompare the Grimm immediately after a flight
• Think whether to run at higher MCP and lower emission current for forest fires (less chance of missing threshold, reduce change of saturation in fires)
• Stuff for Joel
  • Fix timetrace for Fast mode (SO4 goes down, others go up) -- already told him
  • Gaps of 5s in fast timetrace?
  • Timetrace of a few HR peaks as in flux mode?
  • Test and enable cell-phone filtering
• Get sufficient spare orifices (300 and 250 nm)
• See if we can buy/lease a spare TPS from Tofwerk
• Bring spare laptop with everything installed, test that everything works, keep in plane
• Make sure we have a spare battery for thermocouple in plane
• Get another He lecture bottle
• Investigate how we can refill the lecture bottle (ask Eric Apel)
• Replace 2 Gast pumps with MD1 AC powered?
  • Increase bypass flow on inlet line (now limited to ~2.5 lpm)
  • Change our inlet line to 3/8" to allow more flow if possible
• Ask John whether AC-powered MD1 could run AMS (as backup?)
• Put together leak detector with V70, controller, AC MD1, and SRS or Balzers RGA

Integration Phase

(inclusive dates):

• 2/22: Truck leaves Boulder with AMS and rest of kit
• 2/29: Truck arrives in Palmdale,
• 3/4: AMS onto plane
• 3/12: Power Check
• 3/17: Safety Brief
• 3/18-20: Test Flights
• 4/1: Transit to AK

Fairbanks Phase

Timeline

• 4/1 Jose travels to AK
• 4/4 Anticipated first science flight
• 4/21 DC-8 transit to Palmdale - Mike.
• 4/24 Mike travels back to CO

Hotel for J-Group

• Company: Sophie's Station
• Phone: 1-800-528-4916
• Dates: April 1st - April 21st
• Name on Reservation: Jose Jimenez & Mike Cubison
• Confirmation Number: 2733120
• Total: $75.00/ night to be paid on-site
• Details: 24 hour cancellation