Distinct impacts of two types of El Niño events on northern winter high-latitude temperatures simulated by CMIP6 climate models
- Title
- Distinct impacts of two types of El Niño events on northern winter high-latitude temperatures simulated by CMIP6 climate models
- Author
- 박효석
- Keywords
- El Nino; tropical-extratropical teleconnections; CMIP6 models
- Issue Date
- 2023-02-28
- Publisher
- IOP PUBLISHING LTD
- Citation
- ENVIRONMENTAL RESEARCH LETTERS
- Abstract
- The interannual variability of the Northern Hemisphere winter climate is strongly linked to the El
Nino-southern oscillation (ENSO). While North Pacific and North America often exhibit a robust ˜
response to ENSO, so-called the Pacific–North America pattern, the Arctic and Eurasian climate responses to ENSO remain elusive. This study examines 40 different climate models from the coupled model intercomparison project phase 6 (CMIP6) to find the distinct Arctic and Eurasian temperature response to two types of El Nino events. Specifically, Central Pacific El Ni ˜ no events are ˜ accompanied by significant pan-Arctic warming, whereas Eastern Pacific (EP) El Nino events are ˜ maccompanied by cooling over the Barents-Kara Seas and Eurasian continent. During the EP El Nino˜ events, pan-Arctic sea-level pressure (SLP) effectively strengthens, leading to weaker westerlies and surface air cooling over the northern Eurasian continent. These distinct Arctic and Eurasian winter temperature responses to two types of El Nino do not appear clearly in reanalysis data, spanning ˜ 1979–2021, probably because of the small sample size of El Nino events since the satellite era.
- URI
- https://information.hanyang.ac.kr/#/eds/detail?an=000940118200001&dbId=edswschttps://repository.hanyang.ac.kr/handle/20.500.11754/189735
- ISSN
- 1748-9326
- DOI
- 10.1088/1748-9326/acbce9
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > MARINE SCIENCE AND CONVERGENCE ENGINEERING(해양융합공학과) > Articles
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