Asymmetric spillovers from climate, trade, and monetary policy uncertainty to greenhouse gases: A quantile-on-quantile connectedness approach
Küçük Resim Yok
Tarih
2025
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Academic Press Ltd- Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study examines the directional and threshold-dependent connectedness between greenhouse gas emissions (CO2 and CH4) and key sources of policy uncertainty-namely climate (CPU), trade (TPU), and monetary policy (MPU)-using the Quantile-on-Quantile Connectedness (QQC) approach. Based on monthly data from January 1988 to December 2024, the results reveal asymmetric and time-varying information flows across different quantiles. CO2 emerges as a systemic transmitter under climate and monetary uncertainty, while CH4 exhibits selective and regime-dependent responses, particularly under trade policy shocks. The Total Connectedness Index (TCI) dynamics suggest significant structural breaks, with reversals in information directionality observed post-2006 and during the COVID-19 period. The findings highlight the importance of accounting for tail-risk sensitivity and nonlinear spillovers in environmental and economic policymaking, offering new insights into how uncertainty shapes emission behavior across time and regimes.
Açıklama
Anahtar Kelimeler
Greenhouse gas emissions, Policy uncertainty, Quantile connectedness, CO2 and CH4, Tail risk spillovers
Kaynak
Journal of Environmental Management
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
393
