Note the additional information under (i) for the accuracy of the selected product. Reconstructed drought extremes are associated with significant sea surface temperature anomalies over the tropical Pacific and Atlantic Oceans. Precipitation totals New Mexico Change map selection Hide product/period selection Please choose your desired product and period. A new 258- year long tree-ring chronology of Cedrela odorata has been developed in the eastern Amazon and has been used to reconstruct wet season precipitation totals from 1759–2016. How unprecedented these changes might be is difficult to determine because some paleoclimatic, instrumental, and climate model simulations suggest that Amazonian precipitation and streamflow may be subject to multidecadal variability with return intervals longer than most direct observations. Instrumental observations indicate that Amazon precipitation and streamflow extremes have increased during the last 40 years, possibly due to anthropogenic changes and natural variability. Dam volumes, rainfall and water use data is updated every working day, streamflow is updated weekly. Precipitation data is critical to track the impacts of rainfall on our two major wet-weather programs: Project.

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