Recent trends in temperature and precipitation over South Korea

Jung, Hakyung; Choi, Youngeun; Oh, Jai-Ho; Lim, Gyu-Ho

doi:10.1002/joc.797

Cited by 144 publications

(92 citation statements)

References 26 publications

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“…Data such as these reveal an increase in the minimum temperatures that is greater than the increase in the maximum temperatures. Similar results were also observed by other researchers (JUNG et al, 2002;LADOCHY et al, 2007;VOSE et al, 2005), showing that although there is a high regional variability in the increase of temperature, the same tendency of an increase is evident in different parts of the globe.…”

Section: Air Temperature Changesupporting

confidence: 91%

Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará

et al. 2012

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-Despite uncertainties as to the real causes, there is a large amount of evidence of climatic change on Earth. With the objective of investigating changes in extreme air temperatures, as well as the local effects of these changes, eight data sets, collected throughout the State of Ceará in Brazil, were analyzed. Four series of data were obtained from the semi-arid region, three from the coastal zone, and one from a mountainous region. To quantify the changes that occurred during the study period, variations in maximum and minimum temperatures were calculated in relation to the mean of each data series. The annual rates of temperature increase were estimated from the angular coefficients of the best-fit lines. The results showed that although there are differences in trends between stations, there was a systematic increase in the maximum and minimum temperature in the nineties, which was especially evident in the following decade. The highest rates of increase were recorded for the minimum temperatures (from 9.0 to 8.3 °C per century) for the stations at Guaramiranga and Crateús respectively. These data provide evidence for a greater retention of energy in the form of sensible heat during the night, possibly due to a more difficult energy exchange between the surface and the atmosphere.Key words -Climatic changes. Global warming. Air temperature.Resumo -Apesar das incertezas sobre as verdadeiras causas, há uma grande quantidade de evidências de mudanças climáticas na Terra. Com o objetivo de investigar as mudanças em temperaturas extremas do ar, bem como os efeitos locais das mudanças, oito conjuntos de dados coletados ao longo do Estado do Ceará, Brasil, foram analisados. Quatro série de dados foram obtidas a partir da região semi-árida, três da zona costeira e uma de uma região montanhosa. Para quantificar as mudanças que ocorreram durante o período do estudo, as variações nas temperaturas máximas e mínimas foram calculadas em relação à média de cada série. As taxas anuais de aumento de temperatura foram estimadas pelos coeficientes angulares das linhas de melhor ajuste. Os resultados mostraram que, embora haja diferenças nas tendências entre as estações, ocorreu um aumento sistemático da temperatura máxima e mínima, que foi especialmente evidente na década seguinte, dos anos 90. As maiores taxas de crescimento foram registradas para as temperaturas mínimas (de 9,0 a 8,3 °C por século) para as estações de Guaramiranga e Crateús, respectivamente. Estes dados fornecem evidências para a maior retenção de energia na forma de calor sensível durante a noite possivelmente devido a uma troca de energia mais difícil, entre a superfície e a atmosfera.Palavras-chave -Mudanças climáticas. Aquecimento global. Temperatura atmosférica.

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Section: Air Temperature Changesupporting

confidence: 91%

Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará

et al. 2012

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“…It is well known that the air temperature over South Korea has been significantly increased due to the combined effects of increased greenhouse gases and urban heat island (Jung et al, 2002;Hong et al, 2006). Many works using observed data showed that the amount, intensity and frequency of heavy precipitation over South Korea also increased clearly (Jung et al, 2002;Kim et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Many works using observed data showed that the amount, intensity and frequency of heavy precipitation over South Korea also increased clearly (Jung et al, 2002;Kim et al, 2009). These changes of surface air temperature and heavy precipitation are closely linked with the status of lowto-mid troposphere.…”

Section: Introductionmentioning

confidence: 99%

Trends of Stability Indices and Environmental Parameters Derived from the Rawinsonde Data over South Korea

Eom¹,

Suh²

2011

Journal of the Korean earth science society

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In this paper, trends of the widely used stability indices (SIs) and environmental parameters (EPs) were examined by using the 30-year routine rawinsonde data observed in three upper air observatories (Osan, Gwangju and Pohang) over South Korea. To take into account of the contribution of water vapor to a parcel density, we applied the virtual temperature correction in calculating the SIs and EPs. The trends of SIs and EPs indicated significant increases of temperature and moisture contents, especially at the low-to-mid troposphere during the last 10 years. The warming trend in the lower troposphere shows about 3 times greater than that of the global average (+0.10-+0.20 o C/10 years), whereas the cooling trend of lower stratosphere demonstrates a similar trend with the global average (−0.33-−0.60 o C/10 years). The vertical stability is clearly reduced due to the unsymmetrical change of atmospheric elements. The unstabilizing trend with the increased moisture contents gradually changed the atmospheric environment in South Korea into the conditions favorable for the occurrence of severe weather or intensifications of such events. These trends are consistent with the recent observations, which showed clear increase in the intensity and frequency of heavy rainfalls.

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“…남한 역시 지난 20세기 동안 평균기온이 1.5 o C 상승하였고 (Kwon, 2005), 집중호우와 같은 극한 강우현상의 발생일수가 증가되고 있으며 강우강도 및 낙뢰강도도 강해지고 있는 것으로 보고되고 있다 (김 찬수와 서명석, 2009;명지수와 서명석, 2010;윤희정 외, 2006;Ho et al, 2003;Jung et al, 2002). 앞으 로도 계속해서 지구 평균 온도가 상승할 것으로 예 상되기 때문에 이와 관련하여 나타나게 될 평균 및 극한 기후들의 변화에 대한 관심이 점차 높아지고 있다.…”

Section: 서 론unclassified

Simulation Skills of RegCM4 for Regional Climate over CORDEX East Asia driven by HadGEM2-AO

Oh¹,

Suh²,

Cha³

et al. 2011

Journal of the Korean earth science society

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In this study, 27-year (1979-2005) regional climate over the CORDEX East Asia domain was reproduced using a regional climate model, RegCM4, driven by HadGEM2-AO output, and the model's simulation skill was evaluated in terms of surface air temperature and precipitation. The RegCM4 reasonably simulated the spatial distribution and interannual variability and seasonal variability of surface air temperature, while it had systematic biases in the simulation of precipitation. In particular, simulated rainband of East Asian summer monsoon was southward shifted below 30 o N as compared with the observation, thereby, summer mean precipitation over South Korea was significantly underestimated. Simulated temperature from the RegCM4 driven by the HadGEM2-AO output was comparable to that driven by the reanalysis. However, the RegCM4 driven by the HadGEM2-AO had prominently poor skill in the simulation of precipitation. This can be associated with the distorted monsoon circulations in the driving data (i.e., HadGEM2-AO) such as southward shifted low-level southwesterly, which resulted in the erroneous evolution of East Asian summer monsoon simulated by RegCM4.

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Recent trends in temperature and precipitation over South Korea

Cited by 144 publications

References 26 publications

Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará

Extreme temperature trends in the equatorial region of Brazil: Case study of the state of Ceará

Trends of Stability Indices and Environmental Parameters Derived from the Rawinsonde Data over South Korea

Simulation Skills of RegCM4 for Regional Climate over CORDEX East Asia driven by HadGEM2-AO

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