scholarly journals Influence of Okhotsk Sea Blocking on summer precipitation over South Korea

2021 ◽  
Author(s):  
Chan‐Yeong Song ◽  
Joong‐Bae Ahn
Keyword(s):  
South Korea ◽  
Summer Precipitation ◽  
Okhotsk Sea

Evaluation of summer precipitation over Far East Asia and South Korea simulated by multiple regional climate models

2019 ◽  
Vol 40 (4) ◽  
pp. 2270-2284 ◽  
Author(s):  
Changyong Park ◽  
Dong‐Hyun Cha ◽  
Gayoung Kim ◽  
Gil Lee ◽  
Dong‐Kyou Lee ◽  
...  
Keyword(s):  
South Korea ◽  
East Asia ◽  
Climate Models ◽  
Regional Climate ◽  
Far East ◽  
Summer Precipitation ◽  
Regional Climate Models

scholarly journals Improvement of Extreme Summer Precipitation over South Korea in APHRODITE Data

2017 ◽  
Vol 12 (1) ◽  
pp. 41-51 ◽  
Author(s):  
Gil Lee ◽  
◽  
Dong-Hyun Cha ◽  
Chang-Yong Park
Keyword(s):  
South Korea ◽  
Summer Precipitation

scholarly journals Sensitivity of Summer Precipitation over Korea to Convective Parameterizations in the RegCM4: An Updated Assessment

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Thanh Nguyen-Xuan ◽  
Liying Qiu ◽  
Eun-Soon Im ◽  
Jina Hur ◽  
Kyo-Moon Shim
Keyword(s):  
South Korea ◽  
Daily Precipitation ◽  
Model Performance ◽  
Summer Precipitation ◽  
Northward Propagation ◽  
Precipitation Band ◽  
Limited Accuracy ◽  
Statistical Metrics ◽  
Dry Bias

This study investigates the performance of the latest version of RegCM4 in simulating summer precipitation over South Korea, comparing nine sensitivity experiments with different combinations of convective parameterization schemes (CPSs) between land and ocean. In addition to the gross pattern of seasonal and monthly mean precipitation, the northward propagation of the intense precipitation band and statistics from extreme daily precipitation are thoroughly evaluated against gridded and in situ station observations. The comparative analysis of 10-year simulations demonstrates that no CPS shows superiority in both quantitative and qualitative aspects. Furthermore, a nontrivial discrepancy among the different observation datasets makes a robust assessment of model performance difficult. Regardless of the CPS over the ocean, the simulations with the Kain–Fritsch scheme over land show a severe dry bias, whereas the simulations with the Tiedtke scheme over land suffer from a limited accuracy in reproducing spatial distributions due to the excessive orographic precipitation. In general, the simulations with the Emanuel scheme over land are better at capturing the major characteristics of summer precipitation over South Korea, despite not all statistical metrics showing the best performance. When applying the Emanuel scheme to both land and the ocean, precipitation tends to be slightly overestimated. This deficiency can be alleviated by using either the Tiedtke or Kain–Fritsch schemes over the ocean instead. As few studies have applied and evaluated the Tiedtke and Kain–Fritsch schemes to the Korean region within the RegCM framework, and this study introduces the potential of these new CPSs compared with the more frequently selected Emanuel scheme, which is particularly beneficial to RegCM users.

Variability and Singularity of Seoul, South Korea, Rainy Season (1778–2004)

2007 ◽  
Vol 20 (11) ◽  
pp. 2572-2580 ◽  
Author(s):  
Bin Wang ◽  
Jong-Ghap Jhun ◽  
Byung-Kwon Moon
Keyword(s):  
South Korea ◽  
Rainy Season ◽  
Phase Locking ◽  
Summer Precipitation ◽  
Heavy Rain ◽  
Spectral Peak ◽  
Extreme Weather Events ◽  
Severe Drought ◽  
Large Power ◽  
Precipitation Record

Abstract The 227-yr daily precipitation record gathered for Seoul, South Korea, represents one of the longest instrumental measurements, which provides an exceptional opportunity for detecting climate singularity (a property of phase locking to annual cycle) of extreme weather events and multidecadal–centennial variability of the rainy season structure. From late June to early September, the occurrence of heavy rain events shows a climatological quasi-biweekly oscillation. The rainy season characteristics, including the dates of onset, retreat, summit, and the duration, all show significant centennial variations. The rainy season summit shows a tendency toward delayed occurrence, which changed from the 37th pentad (P37; 30 June–4 July) during the 1778–1807 period to P44 (4–8 August) during the 1975–2004 period. The amplitude of the interannual (2–6 yr) variation of summer precipitation shows a prominent fluctuation with a 50-yr rhythm. A notable climatological break (around 9–13 August) divides the rainy season into a changma (Korean for continuous rain period) and a post-changma period. The major modes of subseasonal variability of the rainy season are characterized by an advanced changma and an enhanced post-changma, respectively. The former is dominated by biennial variation, whereas the latter has a major 5-yr spectral peak, suggesting that the processes leading to their variability are different. The occurrence of severe drought events exhibits a 4-yr spectral peak along with large power on a centennial time scale, while the severe flood events have a spectral peak at 3 and 19 yr, respectively. The remarkable climate variability in Seoul rainfall suggests that trends detected by using a 50-yr-or-shorter precipitation record likely reflect natural variability.

scholarly journals A Long-term Trend of Hourly Summer Precipitation in South Korea

2016 ◽  
Vol 11 (3) ◽  
pp. 207-219
Author(s):  
Kyougmi Lee ◽  
◽  
Seungho Lee
Keyword(s):  
South Korea ◽  
Summer Precipitation ◽  
Term Trend ◽  
Long Term Trend
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