Impact of Amazonian Fires on Atmospheric CO₂
Abstract
Amazon rainforest fires have significant environmental and societal impacts, but the mechanism and impact of the fires on the regional and global carbon cycles have not been fully understood. Over the rainforest, less precipitation, higher surface temperature, and enhanced mid‐tropospheric sinking air over the eastern part of the Amazon characterized the fire/dry season. These meteorological conditions will facilitate more fires in the Amazon rainforest. Using the Orbiting Carbon Observatory‐2 column CO₂, we notice that there are ∼2 ppm more CO₂ over the Amazon compared with the surrounding area during the fire season. The higher concentrations of atmospheric CO₂ are related to the surface biomass burning, enhanced sinking air over the eastern part of the Amazon, and surface winds. Results from this study can help us better understand the carbon sources and sinks over the Amazon during the fire/dry season.
Additional Information
© 2021 American Geophysical Union. Issue Online: 26 February 2021; Version of Record online: 26 February 2021; Accepted manuscript online: 16 February 2021; Manuscript accepted: 04 February 2021; Manuscript revised: 02 February 2021; Manuscript received: 01 December 2020. We thank R.‐L. Shia for helpful comments. We thank two anonymous referees and the editor for their time and constructive suggestions. X. Jiang is supported by NASA ROSES Cassini Data Analysis Program. K.‐F. Li is partially supported by NASA JPL Subcontracts 1631379 and 1653138. M.‐C. Liang is supported by Ministry of Science and Technology, Taiwan (grant no. 108‐2111‐M‐001‐011‐MY3) and Academia Sinica (grant no. AS‐IA‐109‐M03). Y. L. Yung is supported by the NASA OCO‐2 project. Data Availability Statement: GPCP Version 2.3 precipitation data are available at https://psl.noaa.gov/data/gridded/data.gpcp.html. NCEP2 Reanalysis data are available at https://psl.noaa.gov/data/gridded/data.ncep.reanalysis2.html. OCO‐2 Version 9 column CO₂ data are available at https://co2.jpl.nasa.gov/#mission=OCO‐2. AIRS Version 6 column CO data are available at https://airs.jpl.nasa.gov/data/get‐data/standard‐data/. GFED Version 4.1 data are available at https://www.geo.vu.nl/∼gwerf/GFED/GFED4/. MODIS burned area data are available at http://modis‐fire.umd.edu/.Attached Files
Published - 2020GL091875.pdf
Supplemental Material - 2020gl091875-sup-0001-supporting_information_si-s01.docx
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Additional details
- Alternative title
- Impact of Amazonian Fires on Atmospheric CO2
- Eprint ID
- 108253
- Resolver ID
- CaltechAUTHORS:20210301-134944883
- 1631379
- JPL
- 1653138
- JPL
- 108‐2111‐M‐001‐011‐MY3
- Ministry of Science and Technology (Taipei)
- AS‐IA‐109‐M03
- Academia Sinica
- 80NSSC20K0479
- NASA
- Created
-
2021-03-01Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences