Skip to contents

PEcAn.SIPNET

What is SIPNET?

The SIPNET v1 (Simplified PnET (Photosynthesis** and Evapotranspiration)) model is a lightweight ecosystem model designed to simulate ecosystem carbon and water dynamics.

SIPNET v2 added a nitrogen cycle, trace greenhouse-gas (N₂O, CH₄) fluxes, and support for cropland and ecosystem management. As of PEcAn v1.10, support for SIPNET v2 is partially implemented and under active development.

Key Features: - Simulates photosynthesis, respiration, allocation, soil water, soil temperature, and nitrogen cycling - Operates on sub-daily time steps - Tracks vegetation, litter, soil, and mineral-N pools - Event-based management for agricultural processes (planting, harvest, tillage, irrigation) - Clean, modular, BSD-licensed codebase suitable for research and production

For comprehensive SIPNET documentation, see the SIPNET project website.

Using SIPNET via PEcAn

PEcAn.SIPNET is the PEcAn interface package that enables SIPNET integration with the PEcAn workflow system. This package: - Converts PEcAn-standard inputs to SIPNET format - Manages SIPNET model configuration and execution - Converts SIPNET outputs to netCDF in PEcAn standard format - Enables data assimilation, sensitivity analysis, and ensemble runs within the PEcAn modeling framework

Getting Started: - Demo 1: Basic PEcAn Run - SIPNET in the PEcAn Book

Installation

Install PEcAn.SIPNET Package

You can install the development version of PEcAn.SIPNET from r-universe:

# Enable repository from pecanproject
options(repos = c(
  pecanproject = 'https://pecanproject.r-universe.dev',
  CRAN = 'https://cloud.r-project.org'))
# Download and install PEcAn.SIPNET in R
install.packages('PEcAn.SIPNET')

Or install directly from GitHub:

library(remotes)
install_github('pecanproject/pecan', subdir = "models/sipnet")

Install SIPNET Model

To use PEcAn.SIPNET, you also need the SIPNET model executable installed on your system. You can download precompiled versions from the SIPNET releases page, or download the code from Github and compile it yourself following the official instructions.

Documentation

Learn More