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Title: Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment: Urbanization Contribution in Korea

Abstract

This study conducted an updated analysis of the long-term temperature trends over South Korea and reassessed the contribution of the urbanization effect to the local warming trends. Linear trends were analyzed for three different periods over South Korea in order to consider possible inhomogeneity due to changes in the number of available stations: recent 103 years (1912–2014), 61 years (1954–2014), and42 years (1973–2014). The local temperature has increased by 1.90°C, 1.35°C, and 0.99°C during the three periods, respectively, which are found 1.4–2.6 times larger than the global land mean trends. The countries located in the northern middle and high latitudes exhibit similar warming trends (about 1.5 times stronger than the global mean), suggesting a weak influence of urbanization on the local warming over South Korea.Urbanization contribution is assessed using two methods. First, results from “city minus rural” methods showed that 30–45% of the local warming trends during recent four decades are likely due to the urbanization effect, depending on station classification methods and analysis periods. Results from an“observation minus reanalysis” method using the Twentieth Century Reanalysis (20CR) data sets (v2 and v2c)indicated about 25–30% contribution of the urbanization effect to the local warming trend during the recent six decades. However,more » the urbanization contribution was estimated as low as 3–11% when considering the century-long period. Our results confirm large uncertainties in the estimation of urbanization contribution when using shorter-term periods and suggest that the urbanization contribution to the century-long warming trends could be much lower.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [4]
  1. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Division of Environmental Science and Engineering
  2. Kongju National Univ., Gongju (South Korea). Dept. of Atmospheric Science
  3. Department of Geography, Konkuk University, Seoul South Korea
  4. National Institute of Meteorological Sciences, Jeju (South Korea). Climate Research Division
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1461627
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 122; Journal Issue: 20; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Park, Bo-Joung, Kim, Yeon-Hee, Min, Seung-Ki, Kim, Maeng-Ki, Choi, Youngeun, Boo, Kyung-On, and Shim, Sungbo. Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment: Urbanization Contribution in Korea. United States: N. p., 2017. Web. doi:10.1002/2017JD027167.
Park, Bo-Joung, Kim, Yeon-Hee, Min, Seung-Ki, Kim, Maeng-Ki, Choi, Youngeun, Boo, Kyung-On, & Shim, Sungbo. Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment: Urbanization Contribution in Korea. United States. doi:10.1002/2017JD027167.
Park, Bo-Joung, Kim, Yeon-Hee, Min, Seung-Ki, Kim, Maeng-Ki, Choi, Youngeun, Boo, Kyung-On, and Shim, Sungbo. Thu . "Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment: Urbanization Contribution in Korea". United States. doi:10.1002/2017JD027167. https://www.osti.gov/servlets/purl/1461627.
@article{osti_1461627,
title = {Long-Term Warming Trends in Korea and Contribution of Urbanization: An Updated Assessment: Urbanization Contribution in Korea},
author = {Park, Bo-Joung and Kim, Yeon-Hee and Min, Seung-Ki and Kim, Maeng-Ki and Choi, Youngeun and Boo, Kyung-On and Shim, Sungbo},
abstractNote = {This study conducted an updated analysis of the long-term temperature trends over South Korea and reassessed the contribution of the urbanization effect to the local warming trends. Linear trends were analyzed for three different periods over South Korea in order to consider possible inhomogeneity due to changes in the number of available stations: recent 103 years (1912–2014), 61 years (1954–2014), and42 years (1973–2014). The local temperature has increased by 1.90°C, 1.35°C, and 0.99°C during the three periods, respectively, which are found 1.4–2.6 times larger than the global land mean trends. The countries located in the northern middle and high latitudes exhibit similar warming trends (about 1.5 times stronger than the global mean), suggesting a weak influence of urbanization on the local warming over South Korea.Urbanization contribution is assessed using two methods. First, results from “city minus rural” methods showed that 30–45% of the local warming trends during recent four decades are likely due to the urbanization effect, depending on station classification methods and analysis periods. Results from an“observation minus reanalysis” method using the Twentieth Century Reanalysis (20CR) data sets (v2 and v2c)indicated about 25–30% contribution of the urbanization effect to the local warming trend during the recent six decades. However, the urbanization contribution was estimated as low as 3–11% when considering the century-long period. Our results confirm large uncertainties in the estimation of urbanization contribution when using shorter-term periods and suggest that the urbanization contribution to the century-long warming trends could be much lower.},
doi = {10.1002/2017JD027167},
journal = {Journal of Geophysical Research: Atmospheres},
number = 20,
volume = 122,
place = {United States},
year = {2017},
month = {10}
}

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