https://repository.kopri.re.kr/handle/201206/5282 2026-04-19T03:50:24Z 2026-04-19T03:50:24Z Kim, Seong-Joong Lee, Bang Yong Choi, Taejin Yoon, Young Jun 박유민 https://repository.kopri.re.kr/handle/201206/6719 2022-03-24T07:11:38Z 2006-01-01T00:00:00Z

Title: Study of East Asia Climate Change for the Last Glacial Maximum Using Numerical Model Authors: Kim, Seong-Joong; Lee, Bang Yong; Choi, Taejin; Yoon, Young Jun; 박유민 Abstract: 미국 해양대기청의 CCM3 기후모델을 이용하여 마지막최대빙하기 (Last Glacial Maximum (LGM))의 동아시아 기후변화를 시뮬레이션 하였다. 동아시아 내륙에서는 표층온도가 약 4～6℃ 감소하며, 주변해역을 포함하여 약 7.1℃ 하강하는 것으로 시뮬레이션 되는데, 이와 같은 온도감소는 이산화탄소농도 감소에 따른 장파복사량의 증가에 기인한다. 표층의 온도감소는 물수지의 약화를 초래하는데, 겨울철 아시아의 남동부에서 강수량이 약 1～4 mm/day 감소하며, 여름철에는 중국에서의 감수감소가 나타난다. 대체로 마지막최대빙하기동안 동북아시아에서 현재보다 약 50%정도 감수가 감소하는 것으로 시뮬레이션 된다. 증발량도 감소하는 것으로 나타나지만, 강수의 감소가 더 커서 지난빙하기동안 동아시아는 대체로 건조한 기후가 나타나며, 이와 같은 결과는 다른 지역에서 보이고 있는 결과와 잘 일치한다.

2006-01-01T00:00:00Z Yoon, Ho Il Lee, Bang Yong Kim, Seong-Joong https://repository.kopri.re.kr/handle/201206/6717 2022-03-24T07:11:38Z 2006-01-01T00:00:00Z

Title: Numerical Model study of Surface Temperature and Hydrological Budget Change for the Last Glacial Maximum Authors: Yoon, Ho Il; Lee, Bang Yong; Kim, Seong-Joong Abstract: The surface temperature and hydrological budget for the last glacial maximum (LGM) is simulatedwith an atmospheric general circulation model of NCAR CCM3 at spectral truncation of T170, corespondingto a grid cel size of roughly 75 km. LGM simulations were forced with the reconstructed CLIMAP sea surface temperatures, sea ice distribution, ice sheet topography, reduced CO2, and orbital parameters.oC in winter, 5.6oC in sumer,and 6oC annual-mean. The decrease of surface temperature leads to a weakening of the hydrologicalcycle. Global-mean precipitation decreases by about 14% in winter, 17% in summer, and 13% annually.However, some regions such as the U.S., southern Europe, northern and eastern Africa, and the SouthAmerica appear to be weter in the LGM winter and Canada and the Midle East are weter in sumer. model captures detailed climate features over land.Key words Last Glacial Maximum, Temperature, Precipitation, Numerical Simulation, CCM3

2006-01-01T00:00:00Z Kim, Seong-Joong 석봉출 Lee, Bang Yong T.J. Crowley https://repository.kopri.re.kr/handle/201206/7644 2022-03-24T07:13:47Z 2006-01-01T00:00:00Z

Title: High-resolution Simulation of the Asian Summer Monsoon for the mid-Holocene and the Last Glacial Maximum Authors: Kim, Seong-Joong; 석봉출; Lee, Bang Yong; T.J. Crowley Abstract: Asian monsoon between the mid-Holocene and the LGM using results obtained by a relatively fine resolution numerical model. The simulations were performed with the Community Climate Model version 3 (CCM3) atmospheric general circulation model at about 75 km with 18 vertical levels. In the mid-Holocene summer, surface temperature increases in Asian continent by 3-5°C. Associated with the increase in surface temperature, surface pressure becomes deeper inside the continent and this intensifies the landward winds, especially the southwest wind in the Arabian Sea. An increase in landward winds is also shown in the northeast Pacific. In the LGM, on the other hand, the surface temperature decreases and consequently sea level pressure increases in the Tibetan Plateau, which leads to a marked decrease in southwest winds and thus the summer monsoon circulation. In conclusion, the Asian summer monsoon becomes stronger in the mid-Holocene and weaker in the LGM. These model results agree with observational proxy evidence and other previous model simulations.

2006-01-01T00:00:00Z Kim, Seong-Joong Lee, Bang Yong Thomas J. Crowley https://repository.kopri.re.kr/handle/201206/7646 2022-03-24T07:13:47Z 2006-01-01T00:00:00Z

Title: Simulation of the Climate Change in Asia for the mid-Holocene and the Last Glacial Maximum Authors: Kim, Seong-Joong; Lee, Bang Yong; Thomas J. Crowley Abstract: The simulations were performed with the Community Climate Model version 3 (CCM3) atmospheric general circulation model at about 75 km with 18 vertical levels. In the mid-Holocene summer, surface temperature increases in Asian continent by 3-5°C. Associated with the increase in surface temperature, surface pressure becomes deeper inside the continent and this intensifies the landward winds. An increase in landward winds is also shown in the northeast Pacific. In the LGM, on the other hand, the surface temperature decreases and consequently sea level pressure increases in the Tibetan Plateau, which leads to a marked decrease in southwest winds and thus the summer monsoon circulation. The change in spatial wind pattern is closely linked to the distribution of precipitation. In the mid-Holocene summer, precipitation is larger than MOD over most of Asia, especially over Saudi Arabia, India, South Asia, and north East Asia. This increase seems to be associated with the increase in landward winds. In the LGM, precipitation decreases in most regions. The precipitation decrease is especially large in western India and western South Asia presumably due to the weakening of the southwest wind in the Indian Ocean. The Asian summer monsoon becomes stronger in the mid-Holocene and weaker in the LGM. These model results agree with observational proxy evidence and other previous model simulations.

2006-01-01T00:00:00Z