ITCT 2K2 Field Study (Intercontinental Transport and Chemical Transformation)
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ITCT 2K2 Field Study (Intercontinental Transport and Chemical Transformation) • ITCT 2K2 Introduction Today (briefly): • Examine a major Asian emission transport event to demonstrate utility of data set. • Is there a temporal trend in springtime tropospheric ozone in the Eastern Pacific? http://www.al.noaa.gov/WWWHD/pubdocs/ITCT/2k David Parrish, NOAA Aeronomy Laboratory & ITCT 2K2 Science
ITCT 2K2 Field Study (Intercontinental Transport and Chemical Transformation)
ITCT 2K2 Field Study (Intercontinental Transport and Chemical Transformation). http://www.al.noaa.gov/WWWHD/pubdocs/ITCT/2k2/. David Parrish, NOAA Aeronomy Laboratory & ITCT 2K2 Science Team. Today (briefly):. • ITCT 2K2 Introduction. • Examine a major Asian emission transport event to - PowerPoint PPT Presentation
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ITCT 2K2 Field Study(Intercontinental Transport and Chemical
Transformation) ITCT 2K2 IntroductionToday (briefly): Examine a
major Asian emission transport event to demonstrate utility of data
set. Is there a temporal trend in springtime tropospheric ozone in
the Eastern
Pacific?http://www.al.noaa.gov/WWWHD/pubdocs/ITCT/2k2/David
Parrish, NOAA Aeronomy Laboratory & ITCT 2K2 Science Team
13 Flights of NOAA WP-3D April 22 - May 19Goal:Characterize
chemical composition of the air masses coming ashore, focus on
ozone and aerosols.ITCT 2K2 Field Study Spring 2002 West Coast of
North AmericaCoordnated with PEACE-B (Japanese aircraft study)
C. Forster and A. StohlTechnical University of MunichCO
tracersFLEXPART Forecast5/5/2002125 deg West
Particle Size Distributions:C. Brock et al.Altitude (km)Particle
Volume high at lower altitudes
NOAA WP-3D Flight5/5/2002122 - 125 deg west
Have O3 levels in the Eastern Pacific changed?Lets look back in
time
(O3 < 100 ppbv, CO < 150 ppbv, ralt > 2 km over or near
continent, 4/20-5/11)O3 levels in the Eastern Pacifichave increased
in the last 2 decadesJaffe et al.slope = 0.84ppbv/yrr2 = 0.52
O3 levels in the Eastern Pacifichave increased in the last 2
decades
ITCT 2K2 Field Study(Intercontinental Transport and Chemical
Transformation) Introduced ITCT 2K2 Measurements will allow us to
characterize chemical and physical properties of gaseous and
aerosol species. Substantial evidence for 0.5 ppbv/yr increase of
tropospheric O3 in the Eastern
Pacifichttp://www.al.noaa.gov/WWWHD/pubdocs/ITCT/2k2/ Pronounced
episodes of Intercontinental Transport of emissions clearly
observed.
