Wavelet analysis of Amazon hydrological regime variability

@article{Labat2004WaveletAO,
  title={Wavelet analysis of Amazon hydrological regime variability},
  author={D. Labat and Josyane Ronchail and Jacques Call{\`e}de and Jean-Loup Guyot and Eurides de Oliveira and Waldemar Guimar{\~a}es},
  journal={Geophysical Research Letters},
  year={2004},
  volume={31}
}
Wavelet analysis allows for an insightful examination of the temporal variability of Amazon basin hydrology and highlights intermittent interannual and interdecadal fluctuations. Two main conclusions arise. Interannual fluctuations appear as closely related to equatorial Pacific forcings whereas 15‐year and bi‐decadal fluctuations are strongly correlated with Pacific and tropical Atlantic long term forcings. The 1970's climate shift affects the Amazon basin, implying a correlation between both… 

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References

SHOWING 1-10 OF 33 REFERENCES

Amazon River Discharge and Climate Variability: 1903 to 1985

Cross-spectrum analyses of Amazon flow anomalies with indicators of the El Ni�o-Southern Oscillation phenomenon suggest that the oscillations in the hydrograph are coupled to the tropical Pacific climate cycle.

North Atlantic climate variability: phenomena, impacts and mechanisms

Variability of the North Atlantic Oscillation and the Tropical Atlantic dominate the climate of the North Atlantic sector, the underlying ocean and surrounding continents on interannual to decadal

A Pacific Interdecadal Climate Oscillation with Impacts on Salmon Production

Evidence gleaned from the instrumental record of climate data identifies a robust, recurring pattern of ocean–atmosphere climate variability centered over the midlatitude North Pacific basin. Over

Interannual rainfall variability in the Amazon basin and sea‐surface temperatures in the equatorial Pacific and the tropical Atlantic Oceans

Rainfall variability in the Amazon basin is studied in relation to sea‐surface temperatures (SSTs) in the equatorial Pacific and the northern and southern tropical Atlantic during the 1977–99 period,

Interannual variability of surface climate in the Amazon basin

This empirical study examines the circulation mechanisms of anomalously wet and dry years in the Amazon basin. Data sources include surface ship observations in the tropical Atlantic, eastern

Trends, interdecadal and interannual oscillations in global sea-surface temperatures

Abstract This study aims at a global description of climatic phenomena that exhibit some regularity during the twentieth century. Multi-channel singular spectrum analysis is used to extract long-term

Summer Sahel-ENSO teleconnection and decadal time scale SST variations

Abstract The correlation between Sahel rainfall and El Niño–Southern Oscillation (ENSO) in the northern summer has been varying for the last fifty years. We propose that the existence of periods of

North Atlantic Interdecadal Variability: Oceanic response to the North Atlantic Oscillation (1865-1997)

Abstract In contrast to the atmosphere, knowledge about interdecadal variability of the North Atlantic circulation is relatively restricted. It is the objective of this study to contribute to

Evidence for interannual and interdecadal climate variability in the South Atlantic

A singular value decomposition (SVD) analysis is used to determine the coupled modes of variability of monthly sea surface temperature (SST) and sea level pressure (SLP) data from the South Atlantic