The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern
Abstract The December–February surface air temperature (SAT) trend is examined for all consecutive 20‐year time periods between 1979 and 2017, from which a transition from a cold‐Arctic‐warm‐continent toward a warm‐Arctic‐cold‐continent trend pattern is evident. This transition is accompanied by a c...
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| Format: | Article |
| Language: | English |
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Wiley
2019-07-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2019GL082714 |
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| author | Joseph P. Clark Sukyoung Lee |
| author_facet | Joseph P. Clark Sukyoung Lee |
| author_sort | Joseph P. Clark |
| collection | DOAJ |
| description | Abstract The December–February surface air temperature (SAT) trend is examined for all consecutive 20‐year time periods between 1979 and 2017, from which a transition from a cold‐Arctic‐warm‐continent toward a warm‐Arctic‐cold‐continent trend pattern is evident. This transition is accompanied by a consistent transition in the sea level pressure trend pattern that supports warm air advection over the Arctic and cold air advection over the continents. The regression of the detrended December–February‐average SAT onto a detrended index defined to quantify the east‐west gradient of tropical Pacific sea surface temperature is characterized by a warm‐Arctic‐cold‐continent pattern much like the SAT trend pattern observed in recent decades. A decadal timescale warming of the western tropical Pacific water has increased the east‐west gradient of tropical Pacific sea surface temperature, thus contributing to the observed extratropical SAT trend transition. |
| format | Article |
| id | doaj-art-e80a88f1aeed437ab9b0dd2e1397e1e6 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-e80a88f1aeed437ab9b0dd2e1397e1e62025-08-20T03:44:57ZengWileyGeophysical Research Letters0094-82761944-80072019-07-0146148490849910.1029/2019GL082714The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend PatternJoseph P. Clark0Sukyoung Lee1Department of Meteorology and Atmospheric Science The Pennsylvania State University University Park PA USADepartment of Meteorology and Atmospheric Science The Pennsylvania State University University Park PA USAAbstract The December–February surface air temperature (SAT) trend is examined for all consecutive 20‐year time periods between 1979 and 2017, from which a transition from a cold‐Arctic‐warm‐continent toward a warm‐Arctic‐cold‐continent trend pattern is evident. This transition is accompanied by a consistent transition in the sea level pressure trend pattern that supports warm air advection over the Arctic and cold air advection over the continents. The regression of the detrended December–February‐average SAT onto a detrended index defined to quantify the east‐west gradient of tropical Pacific sea surface temperature is characterized by a warm‐Arctic‐cold‐continent pattern much like the SAT trend pattern observed in recent decades. A decadal timescale warming of the western tropical Pacific water has increased the east‐west gradient of tropical Pacific sea surface temperature, thus contributing to the observed extratropical SAT trend transition.https://doi.org/10.1029/2019GL082714 |
| spellingShingle | Joseph P. Clark Sukyoung Lee The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern Geophysical Research Letters |
| title | The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern |
| title_full | The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern |
| title_fullStr | The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern |
| title_full_unstemmed | The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern |
| title_short | The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern |
| title_sort | role of the tropically excited arctic warming mechanism on the warm arctic cold continent surface air temperature trend pattern |
| url | https://doi.org/10.1029/2019GL082714 |
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