Science Advances

Supplementary Materials

This PDF file includes:

  • Fig. S1. Location of Manaus and Óbidos gauges in the Amazon system.
  • Fig. S2. Increasing seasonal hydrological variability in Amazonia during 1970–2015.
  • Fig. S3. Time-varying frequency of floods (left) and droughts (right) between 1903 and 2015 using different thresholds to define extreme events.
  • Fig. S4. Correlations of monthly Pacific and Atlantic climate indices with seasonal water levels of the Negro River at Manaus and the Amazon River at Óbidos.
  • Fig. S5. Decadal fluctuations in drought frequency in Amazonia and Atlantic climate modes.
  • Fig. S6. Comparison of tropical Atlantic and Pacific SST averages along with the IPO and AMO indices during the Amazon wet season.
  • Fig. S7. Trends and average time series of local Walker circulation based on meridionally averaged (10°S–10°N) zonal vertical mass flux in the ERA-Interim (ERA-I), NOAA 20th century (N20CR), and NCEP-2 (NCEP) reanalyses.
  • References (41, 42)

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