Influence of Asian emissions on background pollutants in the Eastern Pacific

A global 3-D CTM has been used to study the impact of current and future emissions from Asia on CO, PAN and O-3 across the North Pacific. Recent measurements from Washington State have been used to verify the model results with respect to average concentrations as well as amplitude of perturbations during episodic events of strong Asian influence. By performing CTM experiments with and without anthropogenic emissions from Asia, we find that there is a significant contribution from Asian sources in the air arriving to the North Western United States, especially during spring. The mean contribution, which can not easily be inferred from the available measurements, during spring are 34 ppbv, 26 pptv and 4 ppbv for CO, PAN and O-3 respectively. The maximum enhancements caused by Asian sources during episodes are 42 ppbv, 75 pptv, and 7.5 ppbv, respectively The amplitude of the perturbations during short term (2-5 days) episodes of strong Asian influence are quite similar to springtime Asian pollution events which have recently been observed on the west coast of Washington state. A doubling of the current Asian emissions in the model yields significant enhancements in all species, though not necessarily in a linear manner.

Referanse

Berntsen, Terje, S. Karlsdottir and D.A. Jaffe, 1999. Influence of Asian emissions on background pollutants in the Eastern Pacific. Geophysical Research Letters, 26 (14): pp. 2171 - 2174.

Flere detaljer

  • Språk: Engelsk
  • Kategori: Tidsskriftartikler
  • Tittel: Influence of Asian emissions on background pollutants in the Eastern Pacific
  • Tidsskrift: Geophysical Research Letters
  • Volum: 26
  • Nummer: 14
  • Sidetall: 2171 - 2174

Nøkkelord

Geografisk område

Sist oppdatert: 02.01.06

Nedlastning

  • Last ned Referanse (RIS Import Format for Reference Manager, EndNote Plus etc.)

Forfattere

CICERO
CICERO Senter for klimaforskning Pb. 1129 Blindern, 0318 Oslo
Besøksadresse: Gaustadalléen 21, 0349 OSLO
Ansvarlig redaktør:
Christian Bjørnæs
Nettredaktør:
Eilif Ursin Reed
Tlf:
22 85 87 50
E-post:
post@cicero.oslo.no