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HFC-152a 4-hourly mixing ratios normalised by monthly mean HFC-134a

Published bySybil Oliver Modified over 6 years ago

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Presentation on theme: "HFC-152a 4-hourly mixing ratios normalised by monthly mean HFC-134a"— Presentation transcript:

1 INTERCONTINENTAL TRANSPORT FROM USA OBSERVED AT THE AGAGE STATION AT MACE HEAD, IRELAND
HFC-152a 4-hourly mixing ratios normalised by monthly mean HFC-134a HCFC-141b HCFC-142b AGAGE - GCMS P.G. Simmonds S. O’Doherty 14TH July 2004

2 BACK-TRACK AIR-MASS TRAJECTORY
A. Stohl NILU

3 ESTIMATED USA EMISSIONS USING RATIOS RELATIVE TO N2O ON 14TH JULY 2004
Thousand tonnes per year HCFC-141b HCFC-142b HFC-152a HFC-134a

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