Abstract
Using 100yr of global temperature anomaly data, we have performed a singular value decomposition of temperature variations in narrow frequency bands to isolate coherent spatio-temporal "modes' of global climate variability. Secular variance is dominated by a global coherent trend, with nearly all grid points warming in phase at varying amplitude. A smaller, but significant, share of the secular variance corresponds to a pattern dominated by warming and subsequent cooling in the high latitude North Atlantic with a roughly centennial timescale. Spatial patterns associated with significatn peaks in variance within a broad period range from 2.8 to 5.7yr exhibit characteristic El Nino-Southern Oscillation (ENSO) patterns. A recent transition to a regime of high ENSO frequency is suggested by our analysis. -from Authors
Original language | English (US) |
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Pages (from-to) | 25,819-25,833 |
Journal | Journal of Geophysical Research |
Volume | 99 |
Issue number | D12 |
State | Published - Jan 1 1994 |
All Science Journal Classification (ASJC) codes
- Geophysics
- Forestry
- Oceanography
- Aquatic Science
- Ecology
- Water Science and Technology
- Soil Science
- Geochemistry and Petrology
- Earth-Surface Processes
- Atmospheric Science
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
- Palaeontology