Compilation of hydraulic models for the study of the spatial averaging on flow laws

1.Summary

Datasets used in the article written by Ernesto Rodríguez, Michael Durand and Renato Prata de Moraes Frasson entitled “Observing rivers with varying spatial scales”.

2.File description

Data will be contained in one NetCDF file per river. The file contains the following groups and variables:

/River_Info/

Name:      River name, data type: char

QWBM:    Mean annual discharge from the water balance model WBMsed (Cohen et al., 2014)

rch_bnd:   Reach boundaries measured in meters from the upstream end of the model

gdrch:       Reaches used in the study. Used to exclude small reaches defined around low-head dams and other obstacles where Manning’s equation should not be applied.

/XS_Timeseries/

t:               Time measured in days since the first day or “0-January-0000” for cases when specific dates were available. Dimension: 1,time step.

Z:              Bed elevation in meters. Dimension: Cross-section, time step.

xs_rch:      Reach number for each cross-section. Dimension: Cross-section,1.

X:              Flow distance measured from the most upstream end of the model to the cross-section (meters). Dimension: Cross-section, 1.

W:             River width in meters. Dimension: Cross-section, time step.

Q:              Discharge (m³/s). Dimension: Cross-section, time step.

H:              Water surface elevation in meters. Dimension: Cross-section, time step.

A:              Cross-sectional area of flow in m². Dimension: Cross-section, time step.

P:              Wetted perimeter in meters. Dimension: Cross-section, time step.

n:               Manning’s roughness. Dimension: Cross-section, time step.

/Reach_Timeseries/

t:               Time measured in days since the first day or “0-January-0000” for cases when specific dates were available. Dimension: 1,time step.

W:            Reach averaged river width in meters. Dimension: Reach, time step.

Q:             Reach averaged discharge (m³/s). Dimension: Reach, time step.

H:             Reach averaged water surface elevation in meters. Dimension: Reach, time step.

S:             Reach averaged water surface slope in meters per meter. Reach, time step.

A:             Reach averaged area of flow in m². Dimension: Reach, time step.

P:             Reach averaged wetted perimeter in meters. Not available for all rivers. Fill value: NaN. Dimension: Reach, time step.

References

Cohen, S., A. J. Kettner, and J. P. M. Syvitski (2014), Global suspended sediment and water discharge dynamics between 1960 and 2010: Continental trends and intra-basin sensitivity, Glob. Planet. Change, 115, 44-58, doi: 10.1016/j.gloplacha.2014.01.011.

Rodríguez, E., Durand, M. T., & Frasson, R. P. d. M. (2020). Observing rivers with varying spatial scales. Water Resources Research. doi: 10.1029/2019WR026476