Sang‐Yoon Jun
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View article: Near-term Climate Prediction of Agricultural Thermal Conditions in East Asia
Near-term Climate Prediction of Agricultural Thermal Conditions in East Asia Open
Climate change poses significant risks to agriculture, particularly in East Asia, a major crop-producing region. This study evaluates the effectiveness of near-term climate predictions in forecasting agricultural thermal conditions in East…
View article: The role of sea ice in present and future Arctic amplification
The role of sea ice in present and future Arctic amplification Open
The importance of sea-ice loss on the Arctic amplification of near-surface warming remains contentious, as Arctic amplification emerges even in model experiments with disabled surface-albedo feedback. Here we show that the characteristics …
Evaluating the Seasonal Effects of Cool Roofs and Green Roofs on Urban Heat Island effect Using Deep Learning Models in Seoul, Korea Open
Urban Heat Islands (UHIs) significantly impact urban climate resilience, with both beneficial and adverse effects depending on seasonal and spatial factors. This study evaluates the influence of cool roofs and green roofs, designed to miti…
Paleoclimate proxy records suggest reduced tropical Pacific zonal asymmetry under sustained global warming Open
Pronounced model-observation discrepancies in the changes of tropical Pacific zonal sea surface temperature gradient during the satellite era imply systematic model deficiencies. However, the relatively short high-quality instrumental reco…
View article: Tropical eastern Pacific cooling trend reinforced by human activity
Tropical eastern Pacific cooling trend reinforced by human activity Open
It remains unresolved whether the La Niña-like sea surface temperature (SST) trend pattern during the satellite era, featuring a distinct warming in the northwest/southwest Pacific but cooling in the tropical eastern Pacific, is driven by …
How Does Plant CO<sub>2</sub> Physiological Forcing Amplify Amazon Warming in CMIP6 Earth System Models? Open
The physiological response to increasing CO 2 concentrations will lead to land surface warming through a redistribution of the energy balance. As the Amazon is one of the most plant‐rich regions, the increase in surface temperature, caused…
Arctic sea ice loss and La Niña as precursors of extreme East Asian cold winters Open
Despite current global warming due to increasing greenhouse gases, severe cold winters have devastated the East Asia in recent decades. Efforts are being made to predict cold events using dynamic models and physically-based statistical mod…
Multi-year assessment of the impact of ship-borne radiosonde observations on polar WRF forecasts in the Arctic Open
To compensate for the lack of conventional observations over the Arctic Ocean, ship-borne radiosonde observations have been regularly carried out during summer Arctic expeditions and the observed data have been broadcast via the global tel…
Difference in boreal winter predictability between two dynamical cores of Community Atmosphere Model 5 Open
This study investigates the sensitivity of the boreal winter prediction skill of Community Atmosphere Model 5 to the choice of the dynamical core. Both finite volume (FV) and spectral element (SE) dynamical cores are tested. An additional …
Contribution Assessment of Northern Hemispheric Atmospheric Circulations to Korean Mid-Summer Surface Warming by the Atmospheric Nudging Experiment Open
Anomalous surface warming in Korea has been explained by the high-pressure anomaly accompanied by the vertical sinking motion and weakening of westerlies at the exit of the East Asian Jet. The large-scale circulations linked to this high p…
View article: Roles of Atmosphere Thermodynamic and Ocean Dynamic Processes on the Upward Trend of Summer Marine Heatwaves Occurrence in East Asian Marginal Seas
Roles of Atmosphere Thermodynamic and Ocean Dynamic Processes on the Upward Trend of Summer Marine Heatwaves Occurrence in East Asian Marginal Seas Open
By analyzing the European Centre for Medium-Range Weather Forecasts reanalysis version 5 (ERA5) dataset, we found increased frequency of marine heatwaves (MHWs) in East Asian marginal seas (EAMS) during the boreal summer (June-July-August)…
Antarctic meltwater-induced dynamical changes in phytoplankton in the Southern Ocean Open
It has been suggested that the freshwater flux due to the recent melting of the Antarctic ice-sheet/shelf will suppress ventilation in the Southern Ocean (SO). In this study, we performed idealized earth-system simulations to examine the i…
Role of cloud feedback in continental warming response to CO2 physiological forcing Open
Stomatal closure is a major physiological response to the increasing atmospheric carbon dioxide (CO 2 ), which can lead to surface warming by regulating surface energy fluxes—a phenomenon known as CO 2 physiological forcing. The magnitude …
Investigating Wintertime Cloud Microphysical Properties and Their Relationship to Air Mass Advection at Ny-Ålesund, Svalbard Using the Synergy of a Cloud Radar–Ceilometer–Microwave Radiometer Open
This study investigates the relationship of cloud properties and radiative effects with air mass origin during the winter (November–February, 2016–2020) at Ny-Ålesund, Svalbard, through a combination of cloud radar, ceilometer, and microwa…
Idealized simulations with Antarctic meltwater Open
Idealized simulations result, which is used for the present research, was attached as netCDF files. Idealized ensemble experiments with the Geophysical Fluid Dynamics Laboratory (GFDL) model CM2.1 coupled with the biogeochemical (BGC) mode…
Idealized simulations with Antarctic meltwater Open
Idealized simulations result, which is used for the present research, was attached as netCDF files. Idealized ensemble experiments with the Geophysical Fluid Dynamics Laboratory (GFDL) model CM2.1 coupled with the biogeochemical (BGC) mode…
The internal origin of the west-east asymmetry of Antarctic climate change Open
The harmony of the Southern Ocean and Antarctic terrain is the pacemaker of Antarctic climate change under global warming.
Altered sub-seasonal predictability of Community Atmosphere Model 5 (CAM5) in CESM 1.2.1 by the choices of dynamical core Open
This study investigates the prediction skill of sub-seasonal prediction models that vary based on the choice of two dynamical cores: the finite volume (FV) dynamical core on a latitude-longitude grid system and the spectral element (SE) dy…
Dynamical mechanism of the poleward intensification of the Southern Hemispheric Westerlies due to sea ice extent change Open
Paleoclimate data shows a good correlation between the concentration of CO2 and atmospheric temperature in the geological timescale. Many studies compare the Last Glacial Maximum (LGM) and the Pre-Industrial era (PI), to understand the cou…
How sensitive is the sub-seasonal prediction to the choice of dynamical cores in the atmospheric model? Open
This study investigates the prediction skill of the sub-seasonal prediction model that can depend on the choice of dynamical cores: the finite volume (FV) dynamical core on a latitude-longitude grid system versus spectral element (SE) dyna…
Simulations of Winter Arctic Clouds and Associated Radiation Fluxes Using Different Cloud Microphysics Schemes in the Polar WRF: Comparisons With CloudSat, CALIPSO, and CERES Open
Key Points Winter Arctic clouds simulated by the polar version of the Weather Research and Forecasting model are compared with satellite retrievals The cloud amount and cloud top height of model simulations agree well with those of satelli…
Reconstructing spring sea ice concentration in the Chukchi Sea over recent centuries: insights into the application of the PIP<sub>25</sub> index Open
In this study, we aimed to reconstruct spring (April–June) sea ice changes in the western Arctic Ocean over recent centuries (ca. the last 250 years) by measuring biomarker distributions in a multicore (ARA01B-03MUC) retrieved from the Chu…
Recent changes in winter Arctic clouds and their relationships with sea ice and atmospheric conditions Open
Changes in Arctic clouds during boreal winter (December through February) and their relationship with sea ice and atmospheric conditions in recent decades have been examined using satellite and reanalysis data, and they are compared with o…