Interannual to Synoptic Scale Variability in Intercontinental Transport
Abstract
Intercontinental transport (ICT) represents pathways of atmospheric flow responsible for dispersion of air pollutants e.g. ozone and aerosols that play vital roles in regional air quality and climate change. Temporal variations in atmospheric dynamics influence behavior of ICT. Here, we investigate interannual to synoptic scale variability in ICT using a source-receptor relationship. We performed a 10-year `online' simulation of eight Rn-like tracers (one global and seven regional) using Finite Volume General Circulation Model. Six-hourly model output archived from this simulation is analyzed for surface concentration, vertical profile and column amount of all tracers on various timescales at 50 regional receptors placed around the globe. We quantified the contributions from the seven source regions to global tracer distribution at these receptors. In addition, we will present a statistical description of tracer distributions and regional contributions representing the 10-year simulation period.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2004
- Bibcode:
- 2004AGUSM.A23A..11G
- Keywords:
-
- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0305 Aerosols and particles (0345;
- 4801);
- 0345 Pollution: urban and regional (0305);
- 0365 Troposphere: composition and chemistry;
- 0368 Troposphere: constituent transport and chemistry