Climate Change Research ›› 2021, Vol. 17 ›› Issue (6): 685-690.doi: 10.12006/j.issn.1673-1719.2021.162

• Special Section on the Sixth Assessment Report of IPCC: WGI • Previous Articles     Next Articles

The roles of short-lived climate forcers in a changing climate

LIAO Hong(), XIE Pei-Fu   

  1. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control/Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology/School of Environmental Science and Engineering, Nanjing University of Information Science &Technology, Nanjing 210044, China
  • Received:2021-08-11 Revised:2021-09-02 Online:2021-11-30 Published:2021-10-09


Atmospheric components that can influence climate change can be classified as long-lived greenhouse gases and short-lived climate forcers (SLCFs), according to their lifetimes in the atmosphere. Considering the important roles of SLCFs in climate change and air quality, IPCC AR6 has for the first time the dedicated chapter for the assessment of SLCFs. This work summarizes the major conclusions on SLCFs, especially those since AR5, including the definition of SLCFs, changes in emissions and abundances of SLCFs, the effective radiative forcings of SLCFs and climate responses, projected future changes in climate and air quality under Shared Socioeconomic Pathways (SSPs), and the impact of COVID-19 lockdown on climate. We also discuss the uncertainties associated with the AR6 conclusions as well as the implications for climate and air quality in China.

Key words: Short-lived climate forcers (SLCFs), Aerosols, Methane (CH4), Climate change, Air quality

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