임교선 교수

Abstract. This study investigates the impacts of land cover change, as simulated by a dynamic vegetation model, on the summertime climatology over Asia. The climate model used in this study has systematic biases of underestimated rainfall around Korea and overestimation over the South China Sea. When coupled to a dynamic vegetation model, the resulting change in land cover is accompanied by an additional direct radiative effect over dust-producing regions. Both the change in land surface conditi

We analyzed the averages and differences of the time‐mean fields for the positive and negative anomaly years of southerlies for the area between 20°W–60°W and 5°S–5°N, reproduced from the three harmonics near the 11‐year solar cycle. In the positive years of the southerlies or sunspots, the intensification of convection reduced the ozone‐mixing ratio in the tropical troposphere. Such intensification might accompany the expansion of the area subjected to convection and/or the increase of the heig

The adoption of EUV technology in DRAM fabrication is primarily driven by the pursuit of higher device densities, improved performance, and increased energy efficiency. EUV's shorter wavelength (13.5 nm) enables enhanced resolution and finer patterning, enabling the production of smaller memory cells with reduced feature sizes. As the target patterning size is becoming sub-10nm, line edge/width roughness (LER/LWR) is the centerpiece in controlling uniformity of pattern going through the lithogra

This study explores integrating a novel cutaneous force feedback system for robotic-assisted surgery (RAS) systems aimed at improving tactile perception for surgical precision and safety. The system developed comprises two major components: a force-sensitive matrix sensor and a 4x4 tactile pin interface. Forces experienced by the sensors are mirrored through the tactile interface, conveying the sensation of knowing which part of the sensor is in contact and how much force is subjected to it. An

Abstract By band‐passing the European Center reanalysis monthly mean values, we examined the frequency components of 2–3 years in height, latitude, and time domains. In the lower stratosphere, these frequencies have the typical shape of a stratospheric quasi‐biennial oscillation (QBO). We also found significant power of the same frequency components of specific humidity near the surface over the tropics, which can be regarded as an evidence of the effects of the QBO on the lower troposphere. Suc

Abstract. This study investigates the impacts of land cover change, as simulated by a dynamic vegetation model, on the summertime climatology over Asia. The climate model used in this study has systematic biases of underestimated rainfall around Korea and overestimation over the South China Sea. When coupled to a dynamic vegetation model, the resulting change in land cover is accompanied by an additional direct radiative effect over dust-producing regions. The direct radiative effect of the addi

As is evident from its definition, Southern Oscillation Index variability conformed to a combination of the variations of Darwin and Tahiti pressure. Over the El-Nino Southern Oscillation spectra, the Darwin pressure shared variations associated with the SSN tendency while the Tahiti had a connection with the stratospheric quasi-biennial oscillation modulating annual cycle. The power peak near the 3.5-year period comprised the third harmonic of the sun and the second of the modulated annual cycl