http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최우갑,김영아 한국기상학회 2022 대기 Vol.32 No.4
We examined potential seasonal prediction of the Korean surface temperature usingthe relationships between the Arctic Sea Ice Area (SIA) in autumn and the temperature in thefollowing July and February at 850 hPa in East Asia (EA). The Surface Air Temperature (SAT)over Korea shows a similar relationship to that for EA. Since 2007, reduction of autumn SIAhas been followed by warming in Korea in July. The regional distribution shows strong correlationsin the southern and eastern coastal areas of Korea. The correlations in the sea surfacetemperature shows the maximum values in July around the Korean Peninsula, consistent withthe coastal regions in which the maximum correlations in the Korean SAT are seen. InFebruary, the response of the SAT to the SIA is the opposite of that for the July temperature. The autumn sea ice reduction is followed by cooling over Korea in February, although the magnitudeis small. Cooling in the Korean Peninsula in February may be related to planetarywave-like features. Examining the autumn Arctic sea ice variation would be helpful for seasonalprediction of the Korean surface temperature, mostly in July and somewhat in February. Particularly in July, the regression line would be useful as supplementary information for seasonaltemperature prediction.
Variations of the Polar Temperature in the Lower Stratosphere during 1955-2004
최우갑,김동준 한국기상학회 2008 大氣 Vol.18 No.4
The lower-stratospheric polar temperature in winter and spring for both hemispheres is investigated based on the NCEP/NCAR 50-year reanalysis data with respect to the strength of the stratospheric eddy heat flux. Both the polar temperature and the eddy heat flux show significant variation on the decadal and year-to-year time scales except during the Southern Hemisphere winter. The year-to-year variation in the polar temperature is mainly determined by the eddy heat flux convergence. The eddy heat flux convergence is compared with the diabatic heating rate obtained from a two-dimensional model. Radiative heating caused by absorption of solar radiation is comparable to the heating caused by the eddy heat flux convergence in the Southern Hemisphere. The effect of ozone depletion on diabatic heating has been found to be secondary in the Northern Hemisphere, even in March 1997 when the record depletion of ozone took place.
최우갑,육심찬 한국기상학회 2022 Asia-Pacific Journal of Atmospheric Sciences Vol.58 No.2
We investigated the relationship between the Arctic sea ice area and the following year’s atmospheric temperature using reanalysis data. The results demonstrate that the July air temperature at 850 hPa, observed over East Asia (EA) and Western North Pacific (WNP), shows a strong correspondence to the Arctic sea-ice area during the previous year’s September–November period. This relation has been observed since 2007. A strong relationship between the air temperature and the Arctic sea ice is observed only when the sea ice area in autumn is smaller than approximately 6.3million km2. This threshold value coincides with the record reduction in the Arctic sea ice in the autumn of 2007. Sea surface temperature over the Northern Pacific also shows a similar correlation with the Arctic sea ice. The study of these correlations may provide a potential technique for seasonal prediction of July air temperature over EA and the WNP regions.