The OASIS (Ocean-Atmosphere-Sea Ice-Snowpack) field campaign was designed to provide a detailed study of atmosphere-cryosphere exchange processes occurring in the Arctic in late winter / early spring and the impact these exchange processes have on the oxidizing capacity of the remote Arctic atmosphere, with an eye toward the understanding of how these processes will evolve in a changing climate.

Instrument / Technique

PI

Other Investigators

Compounds / Parameters Measured

Actinic Flux

Sam Hall

Kirk Ullmann

Photolysis rates for all photo-active species.

IR Laser Absorption

Alan Fried

Petter Weibring,
Jim Walega

Formaldehyde (CH₂O)

Trace Organic Gas Analyzer (TOGA, Fast GC-MS)

Eric Apel

Alan Hills,
Dan Riemer
(U. Miami)

VOCs, including oxygenated and halogenated species

PAN Thermal-Decomposition CIMS

Frank Flocke,
Wengang Zheng

PAN, CH₃C(O)OONO₂ and analogs (e.g, PPN, PBN, etc.)

NO_x, NO_y, O₃

Andy Weinheimer

David Knapp,
Denise Montzka,
Steve Gabbar

NO, NO₂, NO_y, O₃

CIMS, OH

Lee Mauldin

Ed Kosciuch,
Josh McGrath
(U. Colorado)

OH, H₂SO₄, MSA

CIMS, OH Reactivity

Lee Mauldin

Ed Kosciuch,
Josh McGrath
(U. Colorado)

OH Reactivity

CIMS, HO₂

Chris Cantrell

Rebecca Hornbrook

HO₂, RO₂ radicals

Aerosol physical and chemical properties, various instruments

Jim Smith

Steve Sjosted,
Jon Abbatt
(U. Toronto)

Number concentration, size distribution, hygroscopicity, volatility, bulk composition

Cartridge samples, GC-MS analysis

Alex Guenther

Jim Greenberg,
Andy Turnipseed

Alkyl halides

3D anemometer

Alex Guenther

Jim Greenberg,
Andy Turnipseed

Turbulence, vertical wind