EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Climatological Biomass Burning CO – Where it comes from and where it goes.

Nikos Daskalakis1, Maria Kanakidou1,2,3, Mihalis Vrekoussis1,4, and Laura Gallardo5
Nikos Daskalakis et al.
  • 1Laboratory for Modeling and Observation of the Earth System, Institute of Environmental Physics, University of Bremen, Bremen, Germany
  • 2Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, Heraklion, Crete, Greece
  • 3Center for Studies of Air Quality and Climate Change, Institute for Chemical Engineering Sciences, Foundation for Research and Technology Hellas, Patras, Greece
  • 4The Cyprus Institute, Nicosia, Cyprus
  • 5Center for Climate and Resilience Research (CR2), Department of Geophysics, Faculty of Physical Sciences and Mathematics, University of Chile, Chile

Carbon Monoxide (CO) is an important atmospheric trace gas, and among the key O3 precursors in the troposphere, alongside NOx and VOCs. It is among the most important sinks of OH radical in the atmosphere, which controls lifetime of CH4 — a major greenhouse gas. Biomass burning sources contribute about 25% to the global emissions of CO, with the remaining CO being either emitted from anthropogenic sources, or being chemically formed in the atmosphere. Because of CO tropospheric lifetime is about two months; it can be transported in the atmosphere thus its sources have a hemispheric impact on atmospheric composition.

The extent of the impact of biomass burning to remote areas of the world through long range transport is here investigated using the global 3-dimensional chemistry transport model TM4-ECPL. For this, tagged biomass burning CO tracers from the 13 different HTAP (land) source regions are used in the model in order to evaluate the contribution of each source region to the CO concentrations in the 170 HTAP receptor regions that originate from biomass burning. The global simulations cover the period 1994—2015 in order to derive climatological transport patterns for CO and assess the contribution of each of the source regions to each of the receptor regions in the global troposphere. The CO simulations are evaluated by comparison with satellite observations from MOPITT and ground based observations from WDCGG. We show the significant impact of biomass burning emissions to the most remote regions of the world.

How to cite: Daskalakis, N., Kanakidou, M., Vrekoussis, M., and Gallardo, L.: Climatological Biomass Burning CO – Where it comes from and where it goes., EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-17829,, 2020

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