Vast ecosystem disturbance in a warming climate may jeopardize our climate goal of reducing CO2: a case study for megafires in the Australian ?black summer?

被引：14

作者：

Hong, Xinhua ^{[1
]}

Liu, Cheng ^{[2
,3
,4
]}

Zhang, Chengxin ^{[2
]}

Tian, Yuan ^{[5
,6
]}

Wu, Hongyu ^{[1
]}

Yin, Hao ^{[4
]}

Zhu, Yizhi ^{[7
]}

Cheng, Yafang ^{[2
,8
]}

机构：

[1] Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China

[4] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, HFIPS, Hefei 230031, Peoples R China

[5] Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230031, Peoples R China

[6] Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230031, Peoples R China

[7] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China

[8] Max Planck Inst Chem, Minerva Res Grp, D-55128 Mainz, Germany

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2023年 / 866卷

基金：

中国国家自然科学基金;

关键词：

Wildfire; Climate change; CO2 emission estimate; Carbon budget; Radiative forcing; BIOMASS BURNING EMISSIONS; GLOBAL FIRE EMISSIONS; RADIATIVE-TRANSFER; SATELLITE-OBSERVATIONS; RETRIEVAL ALGORITHM; FUEL CONSUMPTION; VEGETATION FIRES; SMOKE INJECTION; TRACE GASES; CARBON;

D O I：

10.1016/j.scitotenv.2023.161387

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A warming climate is one of the most important driving forces of intensified wildfires globally. The unprecedented wildfires broke out in the Australian 'Black Summer' (November 2019-February 2020), which released massive heat, gases, and particles into the atmosphere. The total carbon dioxide (CO2) emissions from wildfires were estimated at similar to 963 million tons by using a top-down approach based on direct satellite measurements of CO2 and fire radiative power. The fire emissions have led to an approximately 50-80 folds increase in total CO2 emission in Australia com-pared with the similar seasons of 2014-2019. The excess CO2 from wildfires has offset almost half of the global anthro-pogenic CO2 emission reductions due to the Corona Virus Disease 2019 in 2020. When the wildfires were intense in December 2019, they caused a 1.48 watts per square meter additional positive radiative forcing above the monthly average in Australia and the vicinity. Our findings demonstrate that vast ecosystem disturbance in a warming climate can strongly influence the global carbon cycle and hamper our climate goal of reducing CO2.

引用

页数：10