2022
Lapides, D
The Case of California’s Missing Streamflow Presentation
07.07.2022.
BibTeX | Tags: California, ERCZO, Stream Flow
@misc{Lapides2022c,
title = {The Case of California’s Missing Streamflow},
author = {D Lapides},
year = {2022},
date = {2022-07-07},
issue = {US Forest Service Pacific Southwest},
keywords = {California, ERCZO, Stream Flow},
pubstate = {published},
tppubtype = {presentation}
}
LaFollette, PT; Hahm, WJ; Rempe, DM; Dietrich, WE; Brauer, CC; Weerts, AH; Dralle, DN
Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results Journal Article
In: Hydrological Processes, vol. 36, iss. 3, 2022.
Links | BibTeX | Tags: ERCZO, hydrologic modeling, rainfall, rock moisture, Stream Flow
@article{LaFollette2022,
title = {Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results},
author = {PT LaFollette and WJ Hahm and DM Rempe and WE Dietrich and CC Brauer and AH Weerts and DN Dralle},
url = {https://angelo.berkeley.edu/lafollette_rockmoisture_streamflow_model/},
doi = {https://doi.org/10.1002/hyp.14536},
year = {2022},
date = {2022-03-09},
journal = {Hydrological Processes},
volume = {36},
issue = {3},
keywords = {ERCZO, hydrologic modeling, rainfall, rock moisture, Stream Flow},
pubstate = {published},
tppubtype = {article}
}
2021
Muller, M. F.; Roche, K. R.; Dralle, D. N.
Catchment processes can amplify the effect of increasing rainfall variability Journal Article
In: Environmental Research Letters, vol. 16, no. 8, 2021.
Abstract | Links | BibTeX | Tags: climate change, ERCZO, rainfall, Stream Flow, water resources
@article{Muller2021,
title = {Catchment processes can amplify the effect of increasing rainfall variability},
author = {M. F. Muller and K. R. Roche and D. N. Dralle},
doi = {https://doi.org/10.1088/1748-9326/ac153e},
year = {2021},
date = {2021-07-29},
urldate = {2021-07-29},
journal = {Environmental Research Letters},
volume = {16},
number = {8},
abstract = {By filtering the incoming climate signal when producing streamflow, river basins can attenuate—or amplify—projected increases in rainfall variability. A common perception is that river systems dampen rainfall variability by averaging spatial and temporal variations in their watersheds. However, by analyzing 671 watersheds throughout the United States, we find that many catchments actually amplify the coefficient of variation of rainfall, and that these catchments also likely amplify changes in rainfall variability. Based on catchment-scale water balance principles, we relate that faculty to the interplay between two fundamental hydrological processes: water uptake by vegetation and the storage and subsequent release of water as discharge. By increasing plant water uptake, warmer temperatures might exacerbate the amplifying effect of catchments. More variable precipitations associated with a warmer climate are therefore expected to lead to even more variable river flows—a significant potential challenge for river transportation, ecosystem sustainability and water supply reliability.},
keywords = {climate change, ERCZO, rainfall, Stream Flow, water resources},
pubstate = {published},
tppubtype = {article}
}
By filtering the incoming climate signal when producing streamflow, river basins can attenuate—or amplify—projected increases in rainfall variability. A common perception is that river systems dampen rainfall variability by averaging spatial and temporal variations in their watersheds. However, by analyzing 671 watersheds throughout the United States, we find that many catchments actually amplify the coefficient of variation of rainfall, and that these catchments also likely amplify changes in rainfall variability. Based on catchment-scale water balance principles, we relate that faculty to the interplay between two fundamental hydrological processes: water uptake by vegetation and the storage and subsequent release of water as discharge. By increasing plant water uptake, warmer temperatures might exacerbate the amplifying effect of catchments. More variable precipitations associated with a warmer climate are therefore expected to lead to even more variable river flows—a significant potential challenge for river transportation, ecosystem sustainability and water supply reliability.
2015
Dralle, David; Karst, Nathaniel; Thompson, Sally E.
a, b careful: The challenge of scale invariance for comparative analyses in power law models of the streamflow recession Journal Article
In: Geophysical Research Letters, vol. 42, no. 21, 2015.
Abstract | Links | BibTeX | Tags: ERCZO, Power Law, Stream Flow
@article{Dralle2015,
title = {a, b careful: The challenge of scale invariance for comparative analyses in power law models of the streamflow recession},
author = {David Dralle and Nathaniel Karst and Sally E. Thompson},
url = {https://angelo.berkeley.edu/wp-content/uploads/sites/59/Dralle_2015_GeophyResLet.pdf},
doi = {10.1002/2015GL066007},
year = {2015},
date = {2015-10-21},
journal = {Geophysical Research Letters},
volume = {42},
number = {21},
abstract = {The falling limb of the hydrograph – the streamflow recession – is frequently well-approximated by power law functions, in the form dq/dt =− aqb, so that recessions are often characterized in terms of their power law parameters (a, b). The empirical determination and interpretation of the parameter a is typically biased by the presence of a ubiquitous mathematical artifact resulting from the scale-free properties of the power law function. This reduces the information available from recession parameter analysis, and creates several heretofore-unaddressed methodological ‘pitfalls’. This letter outlines the artifact, demonstrates its genesis, and presents an empirical re-scaling method to remove artifact effects from fitted recession parameters. The re-scaling process reveals underlying climatic patterns obscured in the original data, and, we suggest, could maximize the information content of fitted power laws.},
keywords = {ERCZO, Power Law, Stream Flow},
pubstate = {published},
tppubtype = {article}
}
The falling limb of the hydrograph – the streamflow recession – is frequently well-approximated by power law functions, in the form dq/dt =− aqb, so that recessions are often characterized in terms of their power law parameters (a, b). The empirical determination and interpretation of the parameter a is typically biased by the presence of a ubiquitous mathematical artifact resulting from the scale-free properties of the power law function. This reduces the information available from recession parameter analysis, and creates several heretofore-unaddressed methodological ‘pitfalls’. This letter outlines the artifact, demonstrates its genesis, and presents an empirical re-scaling method to remove artifact effects from fitted recession parameters. The re-scaling process reveals underlying climatic patterns obscured in the original data, and, we suggest, could maximize the information content of fitted power laws.