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부경온(Kyung-On Boo),권원태(Won-Tae Kwon),김상원(Sang-Won Kim),이현정(Hyon-Jung Lee) 한국기상학회 2006 대기 Vol.16 No.4
The rainfall amount measured by Chugugi at Gongju was found in “Gaksadeungnok”. Gaksadeungnok is ancient documents from governmental offices in Joseon dynasty. Rainfall data at Gongju are restored for 18 years of 19th century. In 1871, total rainfall amount is 1,338 mm. It is different by about 11% in the amount compared with Seoul Chugugi rainfall in 1871 and Daejeon modern raingauge measurement result during the 30 years (1971-2000). Annual march of monthly rainfall data at Gongju is similar with that of Seoul. Based on the results, restored rainfall at Gongju is consistent with Seoul Chugugi rainfall data. The rainfall amount restored in this study is measured by Chugugi which was installed at Gongju, in Chung-Cheong province. Furthermore, Gaksadeungnok includes rainfall amount reports by agricultural tool measurement in addition to Chugugi measurement. These facts prove a network of rain gauge in Joseon dynasty.
A1B 시나리오 자료를 이용한 우리나라 자연 계절 시작일 및 지속기간의 공간 분포 변화 전망
권영아(Young-Ah Kwon),권원태(Won-Tae Kwon),부경온(Kyung-On Boo) 대한지리학회 2008 대한지리학회지 Vol.43 No.1
지구 온난화는 농업, 수산업, 임업, 보건 등 사회 여러 분야에 걸쳐 인간에게 영향을 미치고 있으므로 기후변화에 따른 영향을 평가하고 적응 방안을 모색하는 일은 우리에게 당면한 과제이다. 이를 해결하기 위해서는 현재 기후를 정확히 분석하는 것뿐만 아니라 미래 기후를 전망하는 것이 필요하다. 본 연구에서는 30년간(1971~2000)의 관측 자료와 IPCC SRES A1B 시나리오에 근거한 2090년대(2091~2100) 전망 자료에 로패스 필터링 기법을 적용하여 계절 시작일 및 계절 지속기간의 공간 분포 변화를 분석하였다. 계절시작일의 공간 분포를 보면, 봄과 겨울 시작일은 위도, 지형 및 해양의 영향을 많이 받으나, 여름과 가을 시작일은 위도에 의한 영향은 거의 없고, 해양과 지형에 의해서만 일부 영향을 받는다. 2090년대의 계절 시작일을 보면, 남해안과 동해안 및 남부 내륙 지역에서는 현재보다 봄은 40일 정도, 여름은 25~30일 정도 빨리 시작되며, 가을은 20일 정도, 겨울은 50일 정도 늦게 시작될 것으로 전망되었다. 또한 계절 지속기간을 보면, 2090년대에는 남해안과 동해안 및 남부 지방에서 겨울철은 더 짧아지고 여름철은 더 길어질 것으로 전망되었다. As the global warming has influenced on various sectors including agriculture, forestry, fisheries and health, it is essential to project more accurate future climate for an assessment of climate change impact and adaptation strategy. This study examines spatial distribution of onset dates and durations of season decomposed by applying a lowpass filtering using observed 30-year (1971-2000) data and projected 2090s data based on the IPCC SRES A1B emission scenario in South Korea. In general, the distributions of spring and winter onset date are affected by latitudes, topography and proximity to oceans. However, onset dates of summer and autumn are a little affected by proximity to oceans and topography than by latitudes. In the 2090s (2091-2100), the onset dates of spring begin about 40 days earlier and the onset dates of summer begin 25-30 days earlier as compare with present time. On the other hand, the onset dates of winter begin about 50 days later in the southern and eastern coastal area and in the southern inland. The onset dates of autumn begin about 20 days later. In the 2090s, summer duration is longer and winter duration is shorter as compare with present time at southern and eastern coastal area.
우리나라 인근과 유럽의 계절에 따른 강수와 기온의 관계 및 RCP8.5 시나리오에 기반한 미래 전망
김진욱(Jin-Uk Kim),부경온(Kyung-On Boo),심성보(Sungbo Shim),권원태(Won-Tae Kwon),변영화(Young-Hwa Byun) 한국기상학회 2017 대기 Vol.27 No.1
It is imperative to understand the characteristics of atmospheric circulation patterns under the climate system due to its impact on climatic factors. Thus this study focused on analyzing the impact of the atmospheric circulation on the relationship between precipitation and temperature regionally. Here we used monthly gridded observational data (i.e., CRU-TS3.2, NOAA-20CR V2c) and HadGEM2-AO climate model by RCP8.5, for the period of 1960~1999 and 2060~2099. The experiment results indicated that the negative relationship was presented over East Asia and Europe during summer. On the other hand, at around Korea (i.e. EA1: 31<SUP>o</SUP>N~ 38<SUP>o</SUP>N, 126<SUP>o</SUP>E~140<SUP>o</SUP>E) and Northwestern Europe (i.e. EU1: 48<SUP>o</SUP>N~55<SUP>o</SUP>N, 0<SUP>o</SUP>E~16<SUP>o</SUP>E) in winter, strong positive relationship dominate due to warm moist advection come from ocean related to intensity variation of the East Asian winter monsoon (EAWM) and North Atlantic Oscillation (NAO), respectively. It was found that values of positive relation in EA1 and EU1 at the end of the 21st century is regionally greater than at the end of 20th century during winter since magnitude of variation of the EAWM and NAO is projected to be greater in the future as result of simulation with RCP 8.5. Future summer, the negative correlations are weakened in EA1 region while strengthened in EU1 region. For better understanding of correlations with respect to RCP scenarios, a further study is required.
GloSea5 모형의 한반도 인근 해수면 온도 예측성 평가: 편차 보정에 따른 개선
강동우(Dong-Woo Gang),조형오(Hyeong-Oh Cho),손석우(Seok-Woo Son),이조한(Johan Lee),현유경(Yu-Kyung Hyun),부경온(Kyung-On Boo) 한국기상학회 2021 대기 Vol.31 No.2
The necessity of the prediction on the Seasonal-to-Subseasonal (S2S) timescale continues to rise. It led a series of studies on the S2S prediction models, including the Global Seasonal Forecasting System Version 5 (GloSea5) of the Korea Meteorological Administration. By extending previous studies, the present study documents sea surface temperature (SST) prediction skill around the Korean peninsula in the GloSea5 hindcast over the period of 1991~2010. The overall SST prediction skill is about a week except for the regions where SST is not well captured at the initialized date. This limited prediction skill is partly due to the model mean biases which vary substantially from season to season. When such biases are systematically removed on daily and seasonal time scales the SST prediction skill is improved to 15 days. This improvement is mostly due to the reduced error associated with internal SST variability during model integrations. This result suggests that SST around the Korean peninsula can be reliably predicted with appropriate post-processing.
허태경(Tae-Kyung Heo),김영미(Youngmi Kim),부경온(Kyung-On Boo),변영화(Young-Hwa Byun),조천호(Chunho Cho) 한국기상학회 2018 대기 Vol.28 No.1
This study presents future potential sea level change over the seas surrounding Korea using Climate Model Intercomparison Project Phase 5 9 model ensemble result from Representative Concentration Pathways (RCPs), downloaded from icdc.zmaw.de. At the end of 21st century, regional sea level changes are projected to rise 37.8, 48.1, 47.7, 65.0 cm under RCP2.6, RCP4.5, RCP6.0 and RCP8.5 scenario, respectively with the large uncertainty from about 40 to 60 cm. The results exhibit similar tendency with the global mean sea level rise (SLR) with small differences less than about 3 cm. For the East Sea, the Yellow Sea, and the southern sea of Korea, projected SLR in the Yellow Sea is smaller and SLR in the southern sea is larger than the other coastal seas. Differences among the seas are small within the range of 4 cm. Meanwhile, Commonwealth Scientific and Industrial Research Organization (CSIRO) data in 23 years shows that the mean rate of sea level changes around the Yellow Sea is high relative to the other coastal seas. For sea level change, contribution of ice and ocean related components are important, at local scale, Glacial Isostatic Adujstment also needs to be considered.