Early-onset trend in European summer caused by Greenland topographic effect SCIE SCOPUS

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Title
Early-onset trend in European summer caused by Greenland topographic effect
Author(s)
Son, Jun Hyeok; Kim, Nam Hoon; Kim, Go Un; Chu, Jung-Eun; Park, Jae-Heung; Kwon, Jae Il; Heo, Ki Young
KIOST Author(s)
Kim, Nam Hoon(김남훈)Kim, Go Un(김고운)Kwon, Jae Il(권재일)Heo, Ki Young(허기영)
Alternative Author(s)
손준혁; 김남훈; 김고운; 권재일; 허기영
Publication Year
2022-10
Abstract
Global heating, which is considered irreversible at least for the near future, causes various climate crises directly affecting human life. Accordingly, European countries have been afflicted by frequent heatwaves in summer. Convolutional neural network deep learning models have revealed the lengthening of the European summer over the past 42 years. Here we show that the early onset of summer is responsible for this climatic trend. In late May, an anti-cyclonic circulation anomaly strengthens over the United Kingdom, Ireland, and the adjoining Atlantic Ocean, causing significant temperature increases across Western Europe, Iceland, and around the Barents Sea. The intensification of the mid-latitude westerly wind impinging on Greenland seems to be responsible for strengthening the anomalous circulation change via topographically forced stationary Rossby wave responses. As the westerly wind intensification is ensued by further global heating, summer will begin earlier, and thus more frequent European heatwaves are expected to occur.
ISSN
1748-9326
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/43251
DOI
10.1088/1748-9326/ac94e7
Bibliographic Citation
Environmental Research Letters, v.17, no.10, 2022
Publisher
Institute of Physics Publishing
Keywords
European summer onset; global warming; Rossby wave; orographic effect; convolutional neural network
Type
Article
Language
English
Document Type
Article
Publisher
Institute of Physics Publishing
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