Impacts of SST Pattern Represented by Ocean Temperature near Ieodo Ocean Research Station on Winter Climate Variation over the Korean Peninsula

Kim, Geon-Il; Kug, Jong‐Seong; Byun, Do-Seong; Lee, Jooyoung

doi:10.1007/s13143-019-00146-5

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…The result of a shorter winter is attributed to the reduced occurrence of patterns associated with the Siberian high. Kim et al (2005) indicated a weakening trend of the Siberian high. Similarly, Kang et al (2022) showed that the Siberian high index has been decreasing due to global warming and is expected to continue decreasing in the future.…”

Section: Discussionmentioning

confidence: 99%

Application of synoptic patterns to the definition of seasons in the Republic of Korea

Kwon,

Choi

2023

Intl Journal of Climatology

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In this study, we applied the classification of synoptic patterns to define seasons. Principal component analysis (PCA) and k‐means clustering were employed to classify the synoptic patterns. In this analysis, seven synoptic patterns were classified, corresponding to two patterns exhibiting winter, spring, and autumn‐like patterns each and one representing summer‐like patterns. The climate characteristics of each synoptic pattern for summer, spring, and autumn were clearly different from each other. The two winter patterns were considered as one season. Seasons were defined based on the occurrence frequency of each synoptic pattern, using the 11‐day window size. Accordingly, the year was divided into first spring, second spring, summer, first autumn, second autumn, and winter. The onset dates of the corresponding seasons were March 8, April 15, June 6, September 8, October 23, and November 29, respectively. In the changing trend of the seasons calculated by year, the start date of first spring was earlier by approximately 2.0 days per decade, and second autumn was delayed by 1.7 days per decade. In addition, the length of first autumn increased by 2.9 days per decade, whereas the length of winter decreased by 3.3 days per decade. In this study, a new method that had not previously been applied in Korea was used to define seasons by considering various climate variables. Compared to previous studies, the seasonal definition method used in this study is objective and reflects comprehensive climate characteristics by considering diverse variables. Furthermore, the proposed methodology for defining the seasons for each year is applicable to the study of changes in seasonal onsets.

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Section: Discussionmentioning

confidence: 99%

Application of synoptic patterns to the definition of seasons in the Republic of Korea

Kwon,

Choi

2023

Intl Journal of Climatology

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“…Modern observations and model simulations suggest that abrupt AWM intensity changes are closely related to high-latitude NH temperature changes [63][64][65] (Fig. 1a).…”

Section: Millennial Awm Dynamicsmentioning

confidence: 97%

Orbital- and millennial-scale Asian winter monsoon variability across the Pliocene–Pleistocene glacial intensification

Ao,

Liebrand,

Dekkers

et al. 2024

Nat Commun

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Intensification of northern hemisphere glaciation (iNHG), ~2.7 million years ago (Ma), led to establishment of the Pleistocene to present-day bipolar icehouse state. Here we document evolution of orbital- and millennial-scale Asian winter monsoon (AWM) variability across the iNHG using a palaeomagnetically dated centennial-resolution grain size record between 3.6 and 1.9 Ma from a previously undescribed loess-palaeosol/red clay section on the central Chinese Loess Plateau. We find that the late Pliocene–early Pleistocene AWM was characterized by combined 41-kyr and ~100-kyr cycles, in response to ice volume and atmospheric CO2 forcing. Northern hemisphere ice sheet expansion, which was accompanied by an atmospheric CO2 concentration decline, substantially increased glacial AWM intensity and its orbitally oscillating amplitudes across the iNHG. Superposed on orbital variability, we find that millennial AWM intensity fluctuations persisted during both the warmer (higher-CO2) late Pliocene and colder (lower-CO2) early Pleistocene, in response to both external astronomical forcing and internal climate dynamics.

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“…In addition to KHOA's research efforts, and in conjunction with their Ieodo ORS field trip program, KIOST has conducted research evaluating the biofouling resistance of RBR and/or Aanderaa versus Seabird conductivity sensors. Two further projects have been conducted in the third category: (i) an investigation of spatio-temporal variability in multiple satellites' measurements of oceanic variables in the seas surrounding Ieodo ORS (Choi et al, 2018;Woo et al, 2018); and (ii) research into the relationship between weather and climate variability over the Korean Peninsula and variability in sea surface temperature near Ieodo ORS (Kim et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Ocean and Atmospheric Observations at the Remote Ieodo Ocean Research Station in the Northern East China Sea

et al. 2021

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For open ocean environments, it is rare to find continuous, simultaneous air and sea observation records due to the challenges of instrument installation and maintenance. The Ieodo Ocean Research Station (Ieodo ORS), a remote ocean site located in the northern East China Sea with its harsh oceanic and atmospheric environment, provides a platform for the concurrent monitoring of air and sea environments. Since 2014, the Korea Hydrographic and Oceanographic Agency has run the “Ieodo ORS field trip program,” via which researchers are able to stay at the station for a week or more. This work reports technical lessons learned over 5 years from five Ieodo ORS research projects launched in 2016. Over the course of these projects, Ieodo ORS has monitored sea surface temperature, temperature and salinity in the water column, seawater pH, air pollutants, and solar radiation. The purpose of this paper is to facilitate the success of future research activities in similar environments by sharing our experiences and “best practices.”

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Impacts of SST Pattern Represented by Ocean Temperature near Ieodo Ocean Research Station on Winter Climate Variation over the Korean Peninsula

Cited by 5 publications

References 21 publications

Application of synoptic patterns to the definition of seasons in the Republic of Korea

Application of synoptic patterns to the definition of seasons in the Republic of Korea

Orbital- and millennial-scale Asian winter monsoon variability across the Pliocene–Pleistocene glacial intensification

Ocean and Atmospheric Observations at the Remote Ieodo Ocean Research Station in the Northern East China Sea

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