Your browser doesn't support javascript.
loading
Estimate Gaps of Montreal Protocol-Regulated Potent Greenhouse Gas HFC-152a Emissions in China Have Been Explained.
Du, Qianna; Li, Bowei; Ma, Mengyue; Yao, Bo; Fang, Xuekun.
Afiliación
  • Du Q; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China.
  • Li B; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China.
  • Ma M; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, P. R. China.
  • Yao B; Department of Atmospheric and Oceanic Sciences & Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, P. R. China.
  • Fang X; Meteorological Observation Centre of China Meteorological Administration (MOC/CMA), Beijing 100081, P. R. China.
Environ Sci Technol ; 58(13): 5750-5759, 2024 Apr 02.
Article en En | MEDLINE | ID: mdl-38506744
ABSTRACT
1,1-Difluoroethane (HFC-152a) is a hydrofluorocarbon regulated by the Montreal Protocol, and its emissions in China are of concern as China will regulate HFC-152a in 2024. However, no observation-inferred top-down estimates were undertaken after 2017, and substantial gaps existed among previous estimates of China's HFC-152a emissions. Using the atmospheric observations and inverse modeling, this study reveals China's HFC-152a emissions of 9.4 ± 1.7 Gg/yr (gigagrams per year), 10.6 ± 1.8 Gg/yr, and 9.7 ± 1.5 Gg/yr in 2018, 2019, and 2020, respectively. In addition, we display an overall increasing trend during 2011-2020, which is in contrast to the decreasing and steady trend reported by the Emission Database for Global Atmospheric Research (EDGAR) and the Chinese government, respectively. Subsequently, we establish a comprehensive bottom-up emission inventory matching with top-down estimates and thus succeed in explaining the gaps among previous estimates. Furthermore, the contribution of China's emissions to global HFC-152a emission growth increased from 15% during 2001-2010 to >100% during 2011-2020. An emission projection based on our improved inventory shows that the Kigali Amendment (KA) would assist in avoiding 1535.6-4710.6 Gg (251.8-772.5 Tg CO2-eq) HFC-152a emissions during 2024-2100. Our findings indicate relatively accurate China's HFC-152a emissions and provide scientific support for addressing climate change and implementing the KA.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gases de Efecto Invernadero País/Región como asunto: Africa / Asia Idioma: En Revista: Environ Sci Technol Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Gases de Efecto Invernadero País/Región como asunto: Africa / Asia Idioma: En Revista: Environ Sci Technol Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos