19 research outputs found
The unique 2009–2010 El Ni?o event: A fast phase transition of warm pool El Ni?o to La Ni?a
No full textThe unique 2009-2010 El Niño event: A fast phase transition of warm pool El Niño to La Niña
No full textThe latest El Nino event in 2009-2010, which is classified as warm pool El Nino, holds a unique ground in that it marks the strongest warming signal in the central Pacific but rapidly decays to strong La Nina. The strong eastward-propagating cold anomaly at the subsurface level is found to be a key factor, and two possible mechanisms are suggested that resulted in the fast phase transition of the 2009-2010 event: 1) The anomalously warm Indian Ocean induces a surface easterly over the western edge of the Pacific, which generates the forced Kelvin waves. 2) The record-breaking high sea surface temperature in the central Pacific excites a strong Rossby response that is to be reflected as an upwelling Kelvin wave at the western boundary. The strong subsurface anomaly then propagates eastward and results in an unusually fast phase transition of the 2009-2010 warm pool El Nino event. Citation: Kim, W., S.-W. Yeh, J.-H. Kim, J.-S. Kug, and M. Kwon (2011), The unique 2009-2010 El Nino event: A fast phase transition of warm pool El Nino to La Nina, Geophys. Res. Lett., 38, L15809, doi:10.1029/2011GL048521.11sciescopu
Migration of atmospheric convection coupled with ocean currents pushes El Niño to extremes
No full textRainfall variability over Zimbabwe and its relation to large‐scale atmosphere–ocean processes
No full textTwo Distinct Modes of Tropical Convection Structure and Associated Climate Variability Over East Asia/Korea in January
No full textDefective Nanoscale Patterning for Dendrite-Free Lithium Deposition: Leveraging Block Copolymer Nanolithography to Fabricate Engraved Nanodimple Anodes
No full textLithium metal batteries offer high energy density but face commercialization challenges due to safety issues, primarily caused by the formation of lithium dendrite structures. To address this, a patterned copper (Cu) nanodimple anode using block copolymer nanolithography, designed to guide lithium deposition by leveraging surface-dependent binding energy variations is developed. High-resolution transmission electron microscopy and density functional theory calculations reveal that the nanodimple curvature contains defective sites that enhance lithium binding energy, confining lithium nucleation within the dimples. This confinement plays a key role in preventing dendritic growth during subsequent lithium deposition. Consistent and uniform lithium growth across these confined nucleation sites is further observed, even after the defective dimple curvature is covered with lithium. This demonstrates the critical role of initial nucleation and nanoscale patterning in promoting stable lithium growth. The engraved Cu nanodimple structure resulted in improved electrochemical performance, highlighting the synergy between computational modeling and experimental validation in designing defect-engineered anode substrates for safer and more efficient lithium metal batteries.
Decadal changes in climatological intraseasonal fluctuation of subseasonal evolution of summer precipitation over the Korean Peninsula in the mid-1990s
No full textMultiple aspects of northern hemispheric wintertime cold extremes as revealed by Markov chain analysis
No full textMajor Climate Variabilities and the Associated Interbasin Relationships Predicted by the APCC In‐House Model
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