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Evaluating Global Streamflow Simulations by a Physically-based Routing Model Coupled with the Community Land Model

Journal Article · · Journal of Hydrometeorology, 16(2):948-971
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Accurately simulating hydrological processes such as streamflow is important in land surface modeling because they can influence other land surface processes, such as carbon cycle dynamics, through various interaction pathways. This study aims to evaluate the global application of a recently developed Model for Scale Adaptive River Transport (MOSART)coupled with theCommunity Land Model, version 4 (CLM4). To support the global implementation of MOSART, a comprehensive global hydrography dataset has been derived at multiple resolutions from different sources. The simulated runoff fields are first evaluated against the composite runoff map from theGlobal RunoffData Centre (GRDC). The simulated streamflow is then shown to reproduce reasonably well the observed daily andmonthly streamflow at over 1600 of the world’smajor river stations in terms of annual, seasonal, and daily flow statistics. The impacts of model structure complexity are evaluated, and results show that the spatial and temporal variability of river velocity simulated byMOSART is necessary for capturing streamflow seasonality and annual maximum flood. Other sources of the simulation bias include uncertainties in the atmospheric forcing, as revealed by simulations driven by four different climate datasets, and human influences, based on a classification framework that quantifies the impact levels of large dams on the streamflow worldwide.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1182898
Report Number(s):
PNNL-SA-101748; KP1703020
Journal Information:
Journal of Hydrometeorology, 16(2):948-971, Journal Name: Journal of Hydrometeorology, 16(2):948-971
Country of Publication:
United States
Language:
English

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Improving the representation of hydrologic processes in Earth System Models: REPRESENTING HYDROLOGIC PROCESSES IN EARTH SYSTEM MODELS journal August 2015
Effects of spatially distributed sectoral water management on the redistribution of water resources in an integrated water model: SECTORAL WATER MANAGEMENT IN IA-ESM journal May 2017
Evaluation of the Runoff and River Routing Schemes in the Community Land Model of the Yellow River Basin: Evaluation of hydrology in Community Land Model journal December 2017
Trade‐off between cost and accuracy in large‐scale surface water dynamic modeling journal June 2017
Evaluation of Simulated Snow and Snowmelt Timing in the Community Land Model Using Satellite‐Based Products and Streamflow Observations journal November 2018
The DOE E3SM Coupled Model Version 1: Overview and Evaluation at Standard Resolution journal July 2019
Flood Inundation Generation Mechanisms and Their Changes in 1953–2004 in Global Major River Basins journal November 2019
The DOE E3SM Coupled Model Version 1: Description and Results at High Resolution journal December 2019
Increased global nitrous oxide emissions from streams and rivers in the Anthropocene journal December 2019
A comprehensive view of global potential for hydro-generated electricity journal January 2015
Evolution of river-routing schemes in macro-scale models and their potential for watershed management journal May 2018
Assessing the Impact of CFSR and Local Climate Datasets on Hydrological Modeling Performance in the Mountainous Black Sea Catchment journal October 2019
The multiscale routing model mRM v1.0: simple river routing at resolutions from 1 to 50 km journal January 2019
The multiscale Routing Model mRM v1.0: simple river routing at resolutions from 1 to 50 km journal February 2019
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Related Subjects

global evaluation
routing model
community land model