BROWSE

Related Researcher

Author's Photo

Lee, Myong-In
Climate-Environment Modeling Lab
Research Interests
  • Climate Change, Seasonal Prediction, Extreme Weather, Aerosol

ITEM VIEW & DOWNLOAD

Spatial Variability and Long-Term Trend in the Occurrence Frequency of Heatwave and Tropical Night in Korea

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Spatial Variability and Long-Term Trend in the Occurrence Frequency of Heatwave and Tropical Night in Korea
Author
Choi, NakbinLee, Myong-In
Issue Date
2019-02
Publisher
KOREAN METEOROLOGICAL SOC
Citation
ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES, v.55, no.1, pp.101 - 114
Abstract
Extreme hot weather in summer is represented by heatwave and tropical night. Based on long-term (1973-2017) surface observations from 73 selected stations, including 60 automated surface observing systems (ASOSs) operated by Korea Meteorological Administration (KMA) and 13 by North Korea, this study examines the spatial variation of the occurrence frequency of heatwave and tropical night in Korea and their long-term trend. The spatial pattern of the heatwave occurrence frequency has different unique features from that of the tropical night. Heatwave develops more frequently in the southern inland regions, while tropical night occurs more in the southern coastal regions and in the urban areas. These hot spots for heatwave and tropical night exhibit a significant positive trend as well. It is also noticeable that the heatwave becomes more frequent in May and September in recent decades. Development mechanisms for heatwave and tropical night are further examined, particularly based on the relationship with cloud fraction. The occurrence frequency of heatwave is correlated negatively with the cloud fraction throughout the warm season, which indicates the daytime temperature is increasing by low cloud fraction. On the other hand, the occurrence frequency of tropical night shows a positive correlation with cloud fraction in May and September, suggesting that the nighttime temperature is effectively increased by enhanced greenhouse effect by cloud for early and late summer. However, the correlation becomes negative in mid-summer (June to August), in which the increased daytime temperature with low cloud fraction tends to affect the nighttime temperature as well. Because of this, the tropical night is more likely accompanied by the heatwave in recent decades.
URI
https://scholarworks.unist.ac.kr/handle/201301/27050
URL
https://link.springer.com/article/10.1007%2Fs13143-018-00101-w
DOI
10.1007/s13143-018-00101-w
ISSN
1976-7633
Appears in Collections:
UEE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU