Pollution events observed during CARIBIC flights in the upper troposphere between South China and the Philippines

by S C Lai, A K Baker, T J Schuck, P Van Velthoven, D E Oram, A Zahn, M Hermann, A Weigelt, F Slemr, C A M Brenninkmeijer, H Ziereis show all authors
Atmospheric Chemistry and Physics ()
Get full text at journal

Abstract

A strong pollution episode in the upper troposphere between South China and the Philippines was observed during CARIBIC flights in April 2007. Five pollution events were observed, where enhancements in aerosol and trace gas concentrations including CO, CO2, CH4, nonmethane hydrocarbons (NMHCs) and halocarbons were observed along the flight tracks during four sequential flights. The importance of the contribution of biomass/biofuel burning was investigated using chemical tracers, emission factor analysis, back-trajectory analysis and satellite images. The Indochinese peninsula was identified as the probable source region of biomass/biofuel burning. However, enhancements in the urban/industrial tracer C2Cl4 during the events also indicate a substantial contribution from urban anthropogenic emissions. An estimation of the contribution of fossil fuel versus biomass/biofuel to the CO enhancement was made, indicating a biomass/biofuel burning contribution of 54 to 92% of the observed CO enhancements. Biomass/biofuel burning was found to be the most important source category during the sampling period.

Cite this document (BETA)

Readership Statistics

19 Readers on Mendeley
by Discipline
 
42% Earth and Planetary Sciences
 
37% Environmental Science
 
11% Chemistry
by Academic Status
 
47% Researcher
 
32% Student > Ph. D. Student
 
11% Professor > Associate Professor
by Country
 
16% United Kingdom
 
5% United States
 
5% Netherlands

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in