Hysteresis Behaviors in East Asian Extreme Precipitation Frequency to CO2 Pathway
- Title
- Hysteresis Behaviors in East Asian Extreme Precipitation Frequency to CO2 Pathway
- Author
- 예상욱
- Issue Date
- 2022-09-16
- Publisher
- AMER GEOPHYSICAL UNION
- Citation
- GEOPHYSICAL RESEARCH LETTERS, v. 49, no 18, page. 1-11
- Abstract
- Understanding regional hydro-climatic extreme responses to CO2 pathways is fundamental to climate change mitigation and adaptation. This study evaluates responses of extreme precipitation frequency (R30mm: days with precipitation ˃= 30 mm) over East Asia to idealized CO2 forcing using the Community Earth System Model (CESM1). Under a symmetric increase (ramp-up, +1% per year until quadrupling level) and decrease (ramp-down, about -1% per year back to the present level) of CO2 concentrations, East Asian R30mm shows an asymmetric response with higher frequency during the ramp-down period. This hysteresis behavior is found to be due to a northwestward propagating wave response to the El Nino-like warming, which induces a three-cell (positive-negative-positive) R30mm difference pattern from central equatorial Pacific to East Asia. Monthly analysis further reveals that this asymmetry has a seasonal locking, occurring during July-September only, constrained by the background precipitation climatology over the sub-tropical western Pacific.
- URI
- https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022GL099814https://repository.hanyang.ac.kr/handle/20.500.11754/191567
- ISSN
- 1944-8007; 0094-8276
- DOI
- https://doi.org/10.1029/2022GL099814
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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