lookup

Visually match short sequences across multiple time series.

Tutorial

Sacramento & Colorado River:
>> Aleutian low
>> ENSO
>> Paleo Aleutian low
>> Paleo ENSO

Salt-Tonto-Verde & Colorado River:
>> Raw data (Full|Crop)
>> Rank percentiles (Full|Crop)
>> Percent of mean (Full|Crop)

Upper Colorado River

View the Project on GitHub brews/lookupjs

Sacramento & Colorado River>> Aleutian low

This version of lookup focuses on patterns between the Sacramento River ("Sacramento"), the Colorado River ("LeesFerry"), North Pacific Index anomalies ("NPI"), and the Aleutian Low Pressure Index ("ALPI").

The data is described in detail below.

"Sacramento" is a water year time series of unimpaired runoff, or full natural flow, for the Sacramento River. The data has been transformed into rank-percentiles. The series is the sum of natural flow from four river gauges: Sacramento River at Bend Bridge, Feather River at Oroville, Yuba River near Smartville, and American River at Folsom Lake. This index is also known as the "Four River Index" or "Four Basin Index".

"LeesFerry" is a water year time series of natural flow for the Colorado River. The data has been transformed into rank-percentiles. The data is calculated from the Lee's Ferry river gauge. This gauge measures the Colorado River streamflow from the Upper Colorado River basin. Source.

"ALPI" is the Aleutian Low Pressure Index from December through March (Beamish et al. 1997, Beamish et al. 2000). This index measures the size of the Aleutian Low.

"NPI" are North Pacific Index anomalies from November through March (Trenberth and Hurrell 1994). The index is the area-weighted sea-level pressure of the Aleutian Low. See here for further discussion.