Physical characteristics of Eurasian winter temperature variability
Despite the on-going global warming, recent winters in Eurasian mid-latitudes were much colder than average. In an attempt to better understand the physical characteristics for cold Eurasian winters, major sources of variability in surface air temperature (SAT) are investigated based on cyclostation...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/11/4/044009 |
| _version_ | 1797748624174612480 |
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| author | Kwang-Yul Kim Seok-Woo Son |
| author_facet | Kwang-Yul Kim Seok-Woo Son |
| author_sort | Kwang-Yul Kim |
| collection | DOAJ |
| description | Despite the on-going global warming, recent winters in Eurasian mid-latitudes were much colder than average. In an attempt to better understand the physical characteristics for cold Eurasian winters, major sources of variability in surface air temperature (SAT) are investigated based on cyclostationary EOF analysis. The two leading modes of SAT variability represent the effect of Arctic amplification (AA) and the Arctic oscillation (AO), respectively. These two modes are distinct in terms of the physical characteristics, including surface energy fluxes and tropospheric circulations, and result in significantly different winter SAT patterns over the Eurasian continent. The AA-related SAT anomalies are dipolar with warm Arctic, centered at the Barents–Kara Seas, and cold East Asia. In contrast, the negative AO-related SAT anomalies are characterized by widespread cold anomalies in Northern Eurasia. Relative importance of the AA and the negative AO contributions to cold Eurasian winters is sensitive to the region of interest. |
| first_indexed | 2024-03-12T16:08:23Z |
| format | Article |
| id | doaj.art-52bc9bee8c454fe6abefef6209f2e64c |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:08:23Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-52bc9bee8c454fe6abefef6209f2e64c2023-08-09T14:14:52ZengIOP PublishingEnvironmental Research Letters1748-93262016-01-0111404400910.1088/1748-9326/11/4/044009Physical characteristics of Eurasian winter temperature variabilityKwang-Yul Kim0Seok-Woo Son1School of Earth and Environmental Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, KoreaSchool of Earth and Environmental Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, KoreaDespite the on-going global warming, recent winters in Eurasian mid-latitudes were much colder than average. In an attempt to better understand the physical characteristics for cold Eurasian winters, major sources of variability in surface air temperature (SAT) are investigated based on cyclostationary EOF analysis. The two leading modes of SAT variability represent the effect of Arctic amplification (AA) and the Arctic oscillation (AO), respectively. These two modes are distinct in terms of the physical characteristics, including surface energy fluxes and tropospheric circulations, and result in significantly different winter SAT patterns over the Eurasian continent. The AA-related SAT anomalies are dipolar with warm Arctic, centered at the Barents–Kara Seas, and cold East Asia. In contrast, the negative AO-related SAT anomalies are characterized by widespread cold anomalies in Northern Eurasia. Relative importance of the AA and the negative AO contributions to cold Eurasian winters is sensitive to the region of interest.https://doi.org/10.1088/1748-9326/11/4/044009Eurasian winter coolingArctic sea ice lossArctic amplificationArctic oscillation |
| spellingShingle | Kwang-Yul Kim Seok-Woo Son Physical characteristics of Eurasian winter temperature variability Environmental Research Letters Eurasian winter cooling Arctic sea ice loss Arctic amplification Arctic oscillation |
| title | Physical characteristics of Eurasian winter temperature variability |
| title_full | Physical characteristics of Eurasian winter temperature variability |
| title_fullStr | Physical characteristics of Eurasian winter temperature variability |
| title_full_unstemmed | Physical characteristics of Eurasian winter temperature variability |
| title_short | Physical characteristics of Eurasian winter temperature variability |
| title_sort | physical characteristics of eurasian winter temperature variability |
| topic | Eurasian winter cooling Arctic sea ice loss Arctic amplification Arctic oscillation |
| url | https://doi.org/10.1088/1748-9326/11/4/044009 |
| work_keys_str_mv | AT kwangyulkim physicalcharacteristicsofeurasianwintertemperaturevariability AT seokwooson physicalcharacteristicsofeurasianwintertemperaturevariability |