Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China

Global warming is associated with an increase in compound drought-heat events (CDHEs), leading to larger and more extreme fire-weather risk in mesic forests. Wildfire activity in subtropical China, under the influence of monsoonal rainfall, was historically limited to dry winters and rare in rainy s...

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Autores: Gutiérrez Rodríguez, Lucas, He, Yingpeng, Sun, Mengqi, Yao, Yinan, Resco de Dios, Víctor
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/464333
Acceso en línea:https://doi.org/10.3390/fire6090346
https://hdl.handle.net/10459.1/464333
Access Level:acceso abierto
Palabra clave:Compound drought-heat extremes
Fire-weather risk
VPD
Canvis climàtics
Foc
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spelling Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical ChinaGutiérrez Rodríguez, LucasHe, YingpengSun, MengqiYao, YinanResco de Dios, VíctorCompound drought-heat extremesFire-weather riskVPDCanvis climàticsFocGlobal warming is associated with an increase in compound drought-heat events (CDHEs), leading to larger and more extreme fire-weather risk in mesic forests. Wildfire activity in subtropical China, under the influence of monsoonal rainfall, was historically limited to dry winters and rare in rainy summers. Here, we seek to test whether this area is on the brink of a major change in its fire regime characterized by larger fire seasons, extending into the summer, leading to increases in fire activity (burned area). We analyze fire activity in Chongqing Municipality (46,890 km2), an important area of subtropical China hosting the Three Gorges Reservoir Area. We observed significant increases in summer forest fires under anomalous dry-hot summer conditions, where the total burned area was 3–6 times the historical annual mean (previously confined to the winter season). Vapor pressure deficit (VPD), an indicator of hot and dry weather conditions (i.e., fire-weather risk), was a strong predictor of fire activity, with larger wildfires occurring on days where VPD was higher than 3.5 kPa. Results indicate that a major wildfire activity expansion may occur in the area due to climate change and the widening time window of fire-weather risk, unless strong fire prevention and local adaptation policies are implemented.This research was funded by the National Natural Science Foundation of China (U20A20179, 31850410483), the Talent Proposals in Sichuan Province (2020JDRC0065), and by Southwest University of Science and Technology (18ZX7131)MDPI2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.3390/fire6090346https://hdl.handle.net/10459.1/464333reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.3390/fire6090346Fire, 2023, vol. 6, núm. 9, p. 1-16cc-by (c) Gutiérrez et al., 2023Attribution 4.0 Internationalinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/4643332026-06-24T12:42:17Z
dc.title.none.fl_str_mv Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
title Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
spellingShingle Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
Gutiérrez Rodríguez, Lucas
Compound drought-heat extremes
Fire-weather risk
VPD
Canvis climàtics
Foc
title_short Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
title_full Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
title_fullStr Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
title_full_unstemmed Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
title_sort Summer compound drought-heat extremes amplify fire-weather risk and burned area beyond historical thresholds in chongqing region, subtropical China
dc.creator.none.fl_str_mv Gutiérrez Rodríguez, Lucas
He, Yingpeng
Sun, Mengqi
Yao, Yinan
Resco de Dios, Víctor
author Gutiérrez Rodríguez, Lucas
author_facet Gutiérrez Rodríguez, Lucas
He, Yingpeng
Sun, Mengqi
Yao, Yinan
Resco de Dios, Víctor
author_role author
author2 He, Yingpeng
Sun, Mengqi
Yao, Yinan
Resco de Dios, Víctor
author2_role author
author
author
author
dc.subject.none.fl_str_mv Compound drought-heat extremes
Fire-weather risk
VPD
Canvis climàtics
Foc
topic Compound drought-heat extremes
Fire-weather risk
VPD
Canvis climàtics
Foc
description Global warming is associated with an increase in compound drought-heat events (CDHEs), leading to larger and more extreme fire-weather risk in mesic forests. Wildfire activity in subtropical China, under the influence of monsoonal rainfall, was historically limited to dry winters and rare in rainy summers. Here, we seek to test whether this area is on the brink of a major change in its fire regime characterized by larger fire seasons, extending into the summer, leading to increases in fire activity (burned area). We analyze fire activity in Chongqing Municipality (46,890 km2), an important area of subtropical China hosting the Three Gorges Reservoir Area. We observed significant increases in summer forest fires under anomalous dry-hot summer conditions, where the total burned area was 3–6 times the historical annual mean (previously confined to the winter season). Vapor pressure deficit (VPD), an indicator of hot and dry weather conditions (i.e., fire-weather risk), was a strong predictor of fire activity, with larger wildfires occurring on days where VPD was higher than 3.5 kPa. Results indicate that a major wildfire activity expansion may occur in the area due to climate change and the widening time window of fire-weather risk, unless strong fire prevention and local adaptation policies are implemented.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.3390/fire6090346
https://hdl.handle.net/10459.1/464333
url https://doi.org/10.3390/fire6090346
https://hdl.handle.net/10459.1/464333
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a https://doi.org/10.3390/fire6090346
Fire, 2023, vol. 6, núm. 9, p. 1-16
dc.rights.none.fl_str_mv cc-by (c) Gutiérrez et al., 2023
Attribution 4.0 International
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by (c) Gutiérrez et al., 2023
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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