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Beyond annual streamflow reconstructions for the Upper Colorado River Basin: A paleo‐water‐balance approach
Author(s) -
Gangopadhyay Subhrendu,
McCabe Gregory J.,
Woodhouse Connie A.
Publication year - 2015
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1002/2015wr017283
Subject(s) - water balance , evapotranspiration , streamflow , surface runoff , hydrology (agriculture) , environmental science , precipitation , snow , drainage basin , water storage , water year , structural basin , snowmelt , climatology , geology , meteorology , geography , ecology , geotechnical engineering , cartography , geomorphology , inlet , biology , paleontology
In this paper, we present a methodology to use annual tree‐ring chronologies and a monthly water balance model to generate annual reconstructions of water balance variables (e.g., potential evapotranspiration ( PET ), actual evapotranspiration ( AET ), snow water equivalent ( SWE ), soil moisture storage ( SMS ), and runoff ( R )). The method involves resampling monthly temperature and precipitation from the instrumental record directed by variability indicated by the paleoclimate record. The generated time series of monthly temperature and precipitation are subsequently used as inputs to a monthly water balance model. The methodology is applied to the Upper Colorado River Basin, and results indicate that the methodology reliably simulates water‐year runoff, maximum snow water equivalent, and seasonal soil moisture storage for the instrumental period. As a final application, the methodology is used to produce time series of PET , AET , SWE , SMS , and R for the 1404–1905 period for the Upper Colorado River Basin.