A5024530252- Climate variability and models
- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Atmospheric chemistry and aerosols
- Oceanographic and Atmospheric Processes
- Polar Research and Ecology
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- Air Quality and Health Impacts
- Pleistocene-Era Hominins and Archaeology
- Geological Studies and Exploration
- Tropical and Extratropical Cyclones Research
- Arctic and Russian Policy Studies
- Marine and environmental studies
- Membrane Separation Technologies
- Global Energy and Sustainability Research
- Air Quality Monitoring and Forecasting
- Isotope Analysis in Ecology
- Geophysics and Gravity Measurements
- Aeolian processes and effects
Korea Polar Research Institute
2015-2024
The Ohio State University
2021
Beijing Normal University
2018
State Key Laboratory of Earth Surface Processes and Resource Ecology
2018
Korea Institute of Ocean Science and Technology
2012-2014
Korea Research Institute of Chemical Technology
2013
Korea University of Science and Technology
2013
University of Victoria
2001-2002
Texas A&M University
1998-2000
Abstract Pronounced changes in the Arctic environment add a new potential driver of anomalous weather patterns midlatitudes that affect billions people. Recent studies these Arctic/midlatitude linkages, however, state inconsistent conclusions. A source uncertainty arises from chaotic nature atmosphere. Thermodynamic forcing by rapidly warming contributes to events through changing surface heat fluxes and large-scale temperature pressure gradients. But internal shifts atmospheric dynamics—the...
[1] This study highlights the fast recovery of wintertime Siberian High intensity (SHI) over last two decades. The SHI showed a marked weakening trend from 1970s to 1980s, leading unprecedented low in early 1990s according most observational data sets. salient declining trend, however, was sharply replaced by Since has been considered as one plausible consequences climate warming, recent seemingly contradicts continuous progression warming Northern Hemisphere. We suggest that alleviated...
Analyses of a mid-Holocene climate model ensemble and paleo-proxies reveal that the Northern Hemisphere was warm.
Abstract In January 2016, the Arctic experienced an extremely anomalous warming event after extraordinary increase in air temperature at end of 2015. During this event, a strong intrusion warm and moist downward longwave radiation, as well loss sea ice Barents Kara seas, were observed. Observational analyses revealed that abrupt was triggered by entry Atlantic windstorm into late December 2015, which brought enormous masses to Arctic. Although storm terminated eastern coast Greenland...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. This record-shattering event saw numerous monthly records being broken including a new all-time record of −9.4°C on 18 at Concordia Station despite typically transition month to Antarctic coreless winter. The driver for these extremes was intense atmospheric river advecting subtropical/midlatitude moisture deep into interior. scope...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. In Part I, we assessed meteorological drivers that generated intense atmospheric river (AR) caused these record-shattering anomalies. Here, continue our large collaborative study by analyzing diverse impacts driven AR landfall. These included rain surface melt was recorded along coastal areas, but this outweighed high snowfall...
Abstract The present study examines the impacts of snow initialization on surface air temperature by a number ensemble seasonal predictability experiments using NCAR Community Atmosphere Model version 3 (CAM3) AGCM with and without initialization. attempts to isolate signals temperature. In this preliminary study, any effects variations in sea ice extent are ignored do not explicitly identify possible atmospheric circulation. Canadian Meteorological Center (CMC) daily depth analysis was used...
Abstract In addition to weather conditions and pollutant emissions, the degree which topography influences occurrence development of haze pollution in downtown Beijing mechanisms that may be involved remain open questions. A series atmospheric chemistry simulations are executed by using online-coupled Weather Research Forecasting with Chemistry (WRF-Chem) model for November-December 2015 different hypothetical topographic height scenarios. The simulation results show exerts an important...
Abstract The Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) had a special observing period (SOP) that ran from 16 November 2018 to 15 February 2019, chosen span austral warm season months greatest operational activity Antarctic. Some 2,200 additional radiosondes were launched during 3-month SOP, roughly doubling routine program, and network drifting buoys Ocean was enhanced. An evaluation global model forecasts SOP using its data has confirmed extratropical forecast skill lags...
Abstract It remains unresolved whether the La Niña-like sea surface temperature (SST) trend pattern during satellite era, featuring a distinct warming in northwest/southwest Pacific but cooling tropical eastern Pacific, is driven by either external forcing or internal variability. Here, conducting comprehensive analysis of observations and series climate model simulations for historical period, we show that combination variability human activity may have shaped observed SST pattern. As...
Decadal changes in surface air temperature (SAT) variability and cold surge characteristics over Northeast Asia during late winter (January–March) are analyzed for the past three decades. Power spectrum analysis of SAT reveals that low‐frequency variabilities with a period longer than 10 days significantly enhanced, while high‐frequency shorter weakened 1980s 2000s. Moreover, surges were stronger lasted 2000s compared to those occurred 1990s. Here, we propose large‐scale atmospheric...
Abstract Polarized emissivities of the sea ice over Arctic were retrieved at Advanced Microwave Scanning Radiometer–EOS 10.65, 18.7, 23.8, and 36.5 GHz channel frequencies. Results indicate that are consistent with other emissivity estimates. However, errors in for multiyear 23.8 can be large up to 8% 20%, respectively, because ignoring freeboard scattering use same emission layer as 6.925 GHz. It is shown slope first‐year between 10.65 18.7 opposite ice, enabling a distinction ice. Using...
The frequency and intensity of extreme high temperature (EHT) in the Northern Hemisphere exhibit remarkable low-frequency (LF) variations (longer than 10 years) summer during 1951–2017. Five hotspots featuring large LF EHT were identified, including western North America–Mexico, eastern Siberia, Europe, central Asia, Mongolian Plateau. probability density functions show that higher occurrences over these recent decades is consistent with shifted average increased variances daily mean...
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This study investigates the contributing factors of East Asian heatwaves (EAHWs) linked to Arctic-Siberian Plain (ASP) over past 42 years (1979-2020). EAHWs are mainly affected by two time scales variabilities: long-term externally forced and interannual variabilities. The attributed increasing global warming trend, while their variability is related circumglobal teleconnection (CGT) ASP patterns. In addition CGT, Rossby wave energy originating from propagates Asia through upper troposphere,...
© 2024 American Meteorological Society. This published article is licensed under the terms of default AMS reuse license. For information regarding this content and general copyright information, consult Copyright Policy (www.ametsoc.org/PUBSReuseLicenses). Corresponding author: Clare Eayrs, clare.eayrs@kopri.re.kr