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HIGEAR. Steve Howell, Yohei Shinozuka, and Tony Clarke University of Hawaii. Area, mm^ 2 /cm^3. TDMA. Don Collins and Jason Tomlinson Texas A&M. IMPEX C130 flight 4 (Seattle local 3). Loop 9. Aerosol is composed of a mixture of sulfate and possibly dust. Loop 10. Loop 11. Loop 9.

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Higear
HIGEAR

Steve Howell, Yohei Shinozuka, and Tony Clarke

University of Hawaii


Area, mm^2/cm^3


TDMA

Don Collins and Jason Tomlinson

Texas A&M



Loop 9

Aerosol is composed of a mixture of sulfate and possibly dust

Loop 10

Loop 11


Loop 9

Aitken mode increases in concentration as the C-130 enters in the plume

Loop 11

Loop 10


Organic sampler
Organic Sampler

Greg Roberts


Aerosol transport and CCN

clouds


  • Long-range transport above 3500 m aerosol.

    • detailed aerosol structure

    • dust / pollution ??

  • Regional source within mixed layer probably new particle formation

  • Atmospheric mixing necessary for long-range transport to serve as CCN

Aerosol transport and CCN

clouds


Dude where s my sulfate

Dude, where’s my sulfate? aerosol.

Rick Peltier, PILS, Georgia Tech

Ed Dunlea, AMS, Univ. of Colorado




Rf05 ams so 4
RF05 – AMS SO aerosol.4

View of flight track from the South


Rf05 ams org
RF05 – AMS Org aerosol.

View of flight track from the South


Close up on asian plumes
Close up on Asian plumes aerosol.

Good correlation of SO4 with NOy again

First flight with organics visible in Asian plumes


Ion composition mainly sulfate and ammonium aerosol.

WSOC instrument problems during flight at ~1800 – no data available.

Does not include unmeasured species (e.g. soot, OC)

Aerosol density estimated (1.5)

Most aerosol neutral charge balance (although a few deviations from 0)


CO aerosol.

Teresa Campos

NCAR


O3 nox noy
O3, NOx, NOy aerosol.

Andy Weinheimer and David Knapp

NCAR


PANs aerosol.

Frank Flocke

NCAR



4 21 flight

4/21 flight aerosol.





CH2O aerosol.

Alan Fried, Jim Walega, Dirk Richter, and Petter Weibring

NCAR


Caltech cims
Caltech CIMS aerosol.

David McCabe and John Crounse


Impex science meeting

IMPEX Science Meeting aerosol.

PTRMS

Thomas Karl, Sou Matsunaga, Kolby Jardine and Alex Guenther

VOCs measured targeted IMPEX:

BTX: benzene, toluene, C8, C9

Acetonitrile (biomass burning)

OVOCs: Methanol, (Acetaldehyde), Acetone/Propanal, C4 (MEK+butanal), C5 and C6 carbonyls, Acetic Acid/Glycolaldehyde, hydroxyacetone


Acetonitrile (biomass burning marker) and Benzene are not correlated in Asian plume. OVOCs slightly enhanced


SRF3 and SRF 4 Acetonitrile correlated in Asian plume. OVOCs slightly enhanced

ppbv


srf4 correlated in Asian plume. OVOCs slightly enhanced

srf3

SRF3 and SRF 4 Benzene

ppbv


Toluene benzene ratio
Toluene/Benzene Ratio correlated in Asian plume. OVOCs slightly enhanced


Ncar cims
NCAR-CIMS correlated in Asian plume. OVOCs slightly enhanced

Lee Mauldin and Rebecca Anderson


SAFS correlated in Asian plume. OVOCs slightly enhanced

Sam Hall


Real-time correlated in Asian plume. OVOCs slightly enhanced

  • UW-Hybrid Dynamical Core (2x2) 0-60km

  • Online unified (strat/trop) chemistry

  • Real-time OMI column ozone assimilation

  • Real-time ecosystem based wild fire emissions (MODIS firecounts/Haines index intensity)

  • Real-time verification with US EPA AIRNow surface ozone

  • 24hr assimilation cycle followed by 96hr forecast cycle

  • Results posted by 9:30am EST

HTTP://rossby.larc.nasa.gov/RAQMS

Seattle field representatives:

R. Bradley Pierce

Dave Kuhl


“Rapid Synthesis of 04/28/06 C130 Flight” correlated in Asian plume. OVOCs slightly enhanced

C130 Flight Track 04/28/06

  • Model verification

  • (transport, emissions)

  • Characterization of

  • large-scale background

  • Mixing Diagnostics

Arctic airmass

Asian influence

Aged airmass

Tropical influence


C130 CO provided by Teresa Campos correlated in Asian plume. OVOCs slightly enhanced

C130

Asian influence

low by factor of

2-3 (15ppb vs 40ppb)

  • RAQMS underestimates Asian

  • emissions (which contribute significantly to Arctic background) consequently Arctic background is underestimated by 30ppbv.

  • RAQMS real-time biomass emissions appear reasonable, so Asian anthropogenic emissions must be low (consistent with RAQMS/GMAO comparisons)

30ppb low bias

(Arctic Background)

10ppb low bias

(Tropical Background)

Biomass/

Tropical

Asian

Biomass/

Tropical

Asian

Arctic

Background

RAQMS

Biomass Plume

(good amplitude,

error in placement)

120ppb

?


C130 O3 data provided by Andrew Weinheimer correlated in Asian plume. OVOCs slightly enhanced

C130

  • Generally good agreement between observed and predicted O3 in free troposphere.

  • 10-20ppb overestimate in BL. (Halogen chemistry?)

RAQMS

Overestimate



CO/O3 correlation background

Mixing

“Fresh” pollution

Strat

Arctic Background

Background


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