Coupled ParFlow-CLM EcoSLIM groundwater age modeling with matrix diffusion

Knowledge graph centered on Coupled ParFlow-CLM EcoSLIM groundwater age modeling with matrix diffusion with 54 nodes and 164 connections. Top connected: Atriplex canescens, Bacteria, climate change, snowpack persistence, Exploring source water mixing and transient reside.

Method synopsis

Coupled integrated hydrologic and particle tracking modeling approach that simulates groundwater flow using ParFlow-CLM and age distributions using EcoSLIM, with matrix diffusion effects incorporated through convolution integral methods. Models are calibrated against environmental tracer observations through Monte Carlo parameter sampling.

Synthesized from method descriptions across 2 papers using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Matrix diffusion controls mountain hillslope groundwater ages and inferred storage dynamics (2025), Groundwater. The protocol was originally introduced by Exploring source water mixing and transient residence time distributions of outflow and evapotranspiration with an integrated hydrologic model and Lagrangian particle tracking approach (2019), Ecohydrology. Implementations in other papers (listed below) may differ.

1. Run ParFlow-CLM hydrologic model
   ParFlow-CLM model was run for the PLM hillslope with constant depth of 100m, simplified to three hydrogeologic layers: 1m thick soil, 3m thick weathered shale, and 96m thick fractured shale bedrock. Numerical grid horizontal resolution is 1.5m, vertical resolution ranges from 0.25 to 10m. Models were dynamically spun up for 10 years using 21-year hourly averaged NLDAS-2 forcing conditions.
   Quantities: 100m constant model depth, 1.5m horizontal resolution, 0.25-10m vertical resolution, 128 Monte Carlo parameter combinations, 10 year spinupDuration: 10 year model spinup period, then WY2000-WY2021 simulation periodConditions: Forced using North American Land Data Assimilation System meteorological dataset, no-flow boundaries
   Equipment: ParFlow-CLM integrated hydrologic model, NLDAS-2 meteorological forcing data
2. Run EcoSLIM particle tracking
   EcoSLIM particle tracking model was initialized with 5 particles with zero age at all model cells. Particles enter subsurface initialized with zero age and move as function of simulated velocity fields via advection-dispersion equation. Model was transiently run from WY2000 to WY2021 at daily timesteps for 3050 years total runtime.
   Quantities: 5 particles per model cell initial condition, daily timesteps, 3050 years total simulationDuration: Daily timesteps from WY2000 to WY2021, 3050 years total runtime

Typical Equipment

• ParFlow-CLM integrated hydrologic model
• EcoSLIM Lagrangian particle tracking model
• NLDAS-2 meteorological forcing data
• convolution integral calculations
• Monte Carlo parameter sampling

Output Measurements

• groundwater age distributions
• environmental tracer concentrations
• groundwater storage dynamics
• water level time series

Papers Using This Protocol (2)

Species Studied With This Protocol

Places Where Used