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.

Schedules should be kept in most detail here, as the group calendar is often too crowded.

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

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

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

Summer Phase

Details to go here.

To-do List for ARCTAS

For Donna (in approx order of priority)

Send to Jose and Mike a slide with time series and spectra (on/off) from I event
Show us how to Squirrel the Fast Mode data (F4 and/or F5)
If time, Squirrel test flights 1 & 2
Compare our data to various tracers from the plane (use timetrace of Flight 7 or 8 as initial guide of what to plot with what)

for Jose

Evaluate the O/C data from Allison

For Mike

Resubmit flight 4 w/o the filter periods
Document inlet geometry and lengths, calculate residence time
Computer control of TD valves
- Test that AMS responds to TD as expected in the ground
- Determine minimal switching time in Fast mode
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 - Next Flight

Test that XChat works in next flight

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

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
Install HV supply for hard mirrow, so that we can run W-mode in forest fire plumes
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?
- Problem with making servo position > 70
- 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