Fire - climate interactions in a warming world
Elevated fire activity in 2019 across the arctic, Amazon, Australia, and other regions sparked a discussion about the role of climate change for the recent rise in biomass burning. Given that drivers of fire vary widely between different fire types and regions, interpreting trends requires a regiona...
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:133599 2023-05-15T15:09:43+02:00 Fire - climate interactions in a warming world Werf, Guido van der Randerson, James Giglio, Louis Wees, Dave van Andela, Niels Veraverbeke, Sander Morton, Douglas Chen, Yang 2020-05-04 https://orca.cardiff.ac.uk/id/eprint/133599/ https://doi.org/10.5194/egusphere-egu2020-10974 unknown Werf, Guido van der, Randerson, James, Giglio, Louis, Wees, Dave van, Andela, Niels https://orca.cardiff.ac.uk/view/cardiffauthors/A2566209K.html orcid:0000-0002-8241-6143 orcid:0000-0002-8241-6143, Veraverbeke, Sander, Morton, Douglas and Chen, Yang 2020. Fire - climate interactions in a warming world. Presented at: EGU General Assembly 2020, Online, 4-8 May 2020. 10.5194/egusphere-egu2020-10974 https://doi.org/10.5194/egusphere-egu2020-10974 doi:10.5194/egusphere-egu2020-10974 Conference or Workshop Item PeerReviewed 2020 ftunivcardiff https://doi.org/10.5194/egusphere-egu2020-10974 2022-11-10T23:37:24Z Elevated fire activity in 2019 across the arctic, Amazon, Australia, and other regions sparked a discussion about the role of climate change for the recent rise in biomass burning. Given that drivers of fire vary widely between different fire types and regions, interpreting trends requires a regional breakdown of the global pattern. Our Global Fire Emissions Database (GFED) now provides nearly 25 years of consistent data and offers important insights into changing fire activity. The GFED record captures a global decline in burned area, driven mostly by reductions in savanna fires from fragmentation and land use change. The global declining trend is therefore driven by areas with relatively low fuel loads where fire often decreases during drought. Here, we report on increasing fire trends in several other regions, which become even more apparent when proxy data from before the satellite era are included. Increasing trends are concentrated in areas with higher fuel loads that burn more easily under drought conditions, and where warming leads to increasing vapor pressure deficits that contribute to more extreme fire weather and higher combustion completeness values. Therefore, the rate of decline in fire emissions is less pronounced than that in burned area, and emissions of several reduced gases have actually increased over time. The historic time series provides important context for trends and drivers of regions that burned extensively in 2019, and moving beyond burned area to estimate fire emissions of greenhouse gases and aerosols is critical to assess how these events may feed back on climate change if trends continue. Conference Object Arctic Climate change Cardiff University: ORCA (Online Research @ Cardiff) Arctic |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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Elevated fire activity in 2019 across the arctic, Amazon, Australia, and other regions sparked a discussion about the role of climate change for the recent rise in biomass burning. Given that drivers of fire vary widely between different fire types and regions, interpreting trends requires a regional breakdown of the global pattern. Our Global Fire Emissions Database (GFED) now provides nearly 25 years of consistent data and offers important insights into changing fire activity. The GFED record captures a global decline in burned area, driven mostly by reductions in savanna fires from fragmentation and land use change. The global declining trend is therefore driven by areas with relatively low fuel loads where fire often decreases during drought. Here, we report on increasing fire trends in several other regions, which become even more apparent when proxy data from before the satellite era are included. Increasing trends are concentrated in areas with higher fuel loads that burn more easily under drought conditions, and where warming leads to increasing vapor pressure deficits that contribute to more extreme fire weather and higher combustion completeness values. Therefore, the rate of decline in fire emissions is less pronounced than that in burned area, and emissions of several reduced gases have actually increased over time. The historic time series provides important context for trends and drivers of regions that burned extensively in 2019, and moving beyond burned area to estimate fire emissions of greenhouse gases and aerosols is critical to assess how these events may feed back on climate change if trends continue. |
format |
Conference Object |
author |
Werf, Guido van der Randerson, James Giglio, Louis Wees, Dave van Andela, Niels Veraverbeke, Sander Morton, Douglas Chen, Yang |
spellingShingle |
Werf, Guido van der Randerson, James Giglio, Louis Wees, Dave van Andela, Niels Veraverbeke, Sander Morton, Douglas Chen, Yang Fire - climate interactions in a warming world |
author_facet |
Werf, Guido van der Randerson, James Giglio, Louis Wees, Dave van Andela, Niels Veraverbeke, Sander Morton, Douglas Chen, Yang |
author_sort |
Werf, Guido van der |
title |
Fire - climate interactions in a warming world |
title_short |
Fire - climate interactions in a warming world |
title_full |
Fire - climate interactions in a warming world |
title_fullStr |
Fire - climate interactions in a warming world |
title_full_unstemmed |
Fire - climate interactions in a warming world |
title_sort |
fire - climate interactions in a warming world |
publishDate |
2020 |
url |
https://orca.cardiff.ac.uk/id/eprint/133599/ https://doi.org/10.5194/egusphere-egu2020-10974 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_relation |
Werf, Guido van der, Randerson, James, Giglio, Louis, Wees, Dave van, Andela, Niels https://orca.cardiff.ac.uk/view/cardiffauthors/A2566209K.html orcid:0000-0002-8241-6143 orcid:0000-0002-8241-6143, Veraverbeke, Sander, Morton, Douglas and Chen, Yang 2020. Fire - climate interactions in a warming world. Presented at: EGU General Assembly 2020, Online, 4-8 May 2020. 10.5194/egusphere-egu2020-10974 https://doi.org/10.5194/egusphere-egu2020-10974 doi:10.5194/egusphere-egu2020-10974 |
op_doi |
https://doi.org/10.5194/egusphere-egu2020-10974 |
_version_ |
1766340844583911424 |