Skip to Main content Skip to Navigation
Journal articles

Global data set of biogenic VOC emissions calculated by the MEGAN model over the last 30 years

Abstract : The Model of Emissions of Gases and Aerosols from Nature (MEGANv2.1) together with the Modern-Era Retrospective Analysis for Research and Applications (MERRA) meteorological fields were used to create a global emission dataset of biogenic volatile organic compounds (BVOC) available on a monthly basis for the time period of 1980-2010. This dataset is called MEGAN-MACC. The model estimated mean annual total BVOC emission of 760 Tg (C) yr−1 consisting of isoprene (70%), monoterpenes (11%), methanol (6%), acetone (3%), sesquiterpenes (2.5%) and other BVOC species each contributing less than 2%. Several sensitivity model runs were performed to study the impact of different model input and model settings on isoprene estimates and resulted in differences of up to ±17% of the reference isoprene total. A greater impact was observed for a sensitivity run applying parameterization of soil moisture deficit that led to a 50% reduction of isoprene emissions on a global scale, most significantly in specific regions of Africa, South America and Australia. MEGAN-MACC estimates are comparable to results of previous studies. More detailed comparison with other isoprene inventories indicated significant spatial and temporal differences between the datasets especially for Australia, Southeast Asia and South America. MEGAN-MACC estimates of isoprene, α-pinene and group of monoterpenes showed a reasonable agreement with surface flux measurements at sites located in tropical forests in the Amazon and Malaysia. The model was able to capture the seasonal variation of isoprene emissions in the Amazon forest.
Complete list of metadatas

Cited literature [105 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00985526
Contributor : Catherine Cardon <>
Submitted on : Friday, April 10, 2015 - 3:55:02 PM
Last modification on : Saturday, December 12, 2020 - 12:10:04 PM
Long-term archiving on: : Tuesday, April 18, 2017 - 4:22:13 PM

File

acp-14-9317-2014.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Katerina Sindelarova, Claire Granier, Idir Bouarar, Alex Guenther, S. Tilmes, et al.. Global data set of biogenic VOC emissions calculated by the MEGAN model over the last 30 years. Atmospheric Chemistry and Physics, European Geosciences Union, 2014, 14, pp.9317-9341. ⟨10.5194/acp-14-9317-2014⟩. ⟨hal-00985526⟩

Share

Metrics

Record views

1153

Files downloads

1102