Hysteresis Behaviors in East Asian Extreme Precipitation Frequency to CO2 Pathway
SCIE
SCOPUS
- Title
- Hysteresis Behaviors in East Asian Extreme Precipitation Frequency to CO2 Pathway
- Authors
- Jo, Seo-Young; Seong, Min-Gyu; Min, Seung-Ki; Kug, Jong-Seong; Yeh, Sang-Wook; An, Soon-Il; Son, Seok-Woo; Shin, Jongsoo
- Date Issued
- 2022-09
- Publisher
- AMER GEOPHYSICAL UNION
- 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://oasis.postech.ac.kr/handle/2014.oak/113991
- DOI
- 10.1029/2022GL099814
- ISSN
- 0094-8276
- Article Type
- Article
- Citation
- GEOPHYSICAL RESEARCH LETTERS, vol. 49, no. 18, 2022-09
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- There are no files associated with this item.
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