NETCARE – POLAR• Two aircraft campaigns – summer 2014, spring 2015 (spring 2016 in proposal)• Close collaboration with Alfred Wegener Institute (Andreas Herber) and Environment

Canada. Additional collaborators (Johannes Schneider (MPI Mainz), Peter Hoor (U of Mainz)

• NSERC-CCAR funding facilitates Canadian university participation in flights with the POLAR aircraft, for the first time. As well, the funding has allowed for

expansion of the POLAR6 instrumental capabilities. • With pooled resources (NETCARE, AWI, EC), the POLAR6 aircraft campaigns are more

extensive than originally planned: 90 hours in 2014 (60 in proposal), 110 hours in 2015 (60 in proposal). As well, the POLAR 5 will be flying in 2015 (110 hours) as part of PAMARCMIP for remote sensing studies.

• NETARE Co-Investigators Involved: Abbatt, Bertram, Blanchet, Jia, Martin, von Salzen

• Goals: Summer 2014 – i. Influence of natural processes on Arctic aerosol, ii. Ship emissions

Spring 2015 – i. Pan-Arctic study of aerosol properties (including black carbon), ii. ice clouds (scavenging, formation, properties)

POLAR-6 Instrumentation in 2014

Gases NOx, SO2, O3 (all standard, slow instruments)CO (fast)CO2 (Licor)

AerosolParticle size and number :

CPC (number of particles larger than 10 nm, fast) UHSAS (70 nm to 1000 nm, fast)SMPS (10 to hundreds of nm, slow)

Particle composition: ALABAMA – single particle mass spectrometer – all species, semi-quantitative, large

particlesSP-AMS – soot-particle aerosol mass spectrometer – sulfate, organics, BC, quantitative, >

100 nmSP-2 – single particle soot photometer – BC (70 nm and up BC inclusions)

Optical properties: CLAP (like a PSAP) Nephelometer

CloudsDroplet size and number: FSSP100, FSSP300 (fast)Liquid water content: Nevzorov Probe (fast)

Ice NucleiFilters collecting particles for subsequent IN analysis (slow)

OthersSun photometerMeteorological parameters

Dates - 2014

Locations

Resolute Bay

Topics for Discussion

• Potential overlap with Amundsen, for ship emissions work. What do we do if the Amundsen is not present?

• Are there opportunities to study flaring, perhaps in 2015?

• Typical flight profiles? How high should the profiles go?

• The instrument complement is essentially fixed. How important would be fast measurements of particle size below 100 nm? We may have the possibility of using a U Denver CPC spectrometer to give us 1 s measurements down to a few nm.

• We are only doing “standard” gases. How important would it be to measure DMS aloft, i.e. just a few grab samples per flight? Can we even do this?

• Do we do science on the ferry flights?

• One goal for the 2015 campaign is to assess how/if ice clouds scavenge BC. Use of a counter flow virtual impactor inlet (CVI) might allow us to do that; we have all the aerosol characterization instrumentation we need. Dan Cziczo (MIT) is interested in collaborating on this. Is it possible?