PFLOTRAN

Knowledge graph centered on PFLOTRAN with 19 nodes and 44 connections. Top connected: Atriplex canescens, evapotranspiration, soil grain size, hydraulic gradient, Estimation of Evapotranspiration Rates and Root Wa.

Method synopsis

Numerical solution of the one-dimensional Richards equation using PFLOTRAN software to simulate soil water flow and generate synthetic soil moisture data for method testing.

Synthesized from method descriptions across 1 paper 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 — Estimation of Evapotranspiration Rates and Root Water Uptake Profiles From Soil Moisture Sensor Array Data (2021), Water Resources Research. Implementations in other papers (listed below) may differ.

1. Generate synthetic soil moisture data
   Solve the Richards equation numerically using PFLOTRAN software to simulate water flow in a homogeneous soil column during and after a 2-hour infiltration event. The soil column has length 1.5 m with hydraulic properties as specified in Table 1 (porosity 0.4, permeability 1×10⁻¹¹ m², residual water content 0.05, etc.). Infiltration rate is set to 0.04 m/h occurring between 48th and 50th hours of simulation.
   Quantities: Soil column length: 1.5 m, discretized into 30 elements of 0.05 m each. Simulation duration: 200 hours with time steps of 0.02 hours (10,000 total time steps). 8 sensor locations at depths: 2.5, 7.5, 12.5, 17.5, 32.5, 47.5, 62.5, and 97.5 cm.Duration: 200-hour simulation period with measurements taken at 100 observation times (every 2 hours)Conditions: Homogeneous soil with known hydraulic parameters, 2-hour precipitation event from 48th to 50th hour
   Equipment: PFLOTRAN numerical code, Dell Desktop Computer with Intel Core i7-8700 CPU, 64 GB RAM, 15.4 GB memory

Typical Equipment

• PFLOTRAN numerical code
• Dell Desktop Computer with Intel Core i7-8700 CPU

Output Measurements

• soil moisture profiles
• water flux
• infiltration rates

Papers Using This Protocol (1)

Species Studied With This Protocol