Interannual and Interdecadal Variations of the Mid-Atlantic Trough and Associated American-Atlantic-Eurasian Climate Anomalies
| Autor: | Mengmeng Lu, Guojun Zhou, Kaiqiang Deng, Yaheng Tan, Song Yang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Maximum intensity
Atmospheric Science 010504 meteorology & atmospheric sciences North Atlantic Deep Water Zonal and meridional Subtropics 010502 geochemistry & geophysics Oceanography 01 natural sciences Atlantic Equatorial mode North Atlantic oscillation Climatology Extratropical cyclone Trough (meteorology) Geology 0105 earth and related environmental sciences |
| Zdroj: | Atmosphere-Ocean. 55:284-292 |
| ISSN: | 1480-9214 0705-5900 |
| DOI: | 10.1080/07055900.2017.1369931 |
| Popis: | The mid-Atlantic trough (MAT) is one of the most prominent circulation systems over the subtropical North Atlantic during the boreal summer, and it can be viewed as a bridge linking the climate in the American-Atlantic-Eurasian region. The upper-tropospheric MAT attains its maximum intensity of 200–150 hPa in June and July. An index measuring the variability of MAT intensity is defined, which reveals significant interannual and interdecadal variations of the trough.On interannual time scales, the variation of MAT is significantly associated with the North Atlantic Oscillation, a southeastward propagating stationary wave that possibly originates from the northeastern Pacific, and the Atlantic Meridional Mode. A stronger trough is associated with warmer surface temperatures and higher pressure over central-northern North America and the extratropical North Atlantic and with colder surface temperatures and lower pressure over the Arctic, the subtropical North Atlantic, and the northeastern Pacific. I... |
| Databáze: | OpenAIRE |
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