PecanProject · Eshaan-byte · Dec 6, 2025 · Dec 7, 2025 · Jan 7, 2026 · Jan 7, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -15,6 +15,7 @@ For more information about this file see also [Keep a Changelog](http://keepacha
 ### Fixed
 
 ### Changed
+- Improved PEcAn.SIPNET documentation: enhanced README with comprehensive model description, updated book pages with proper metadata and current installation instructions, and connected all SIPNET documentation resources (#3703, #3705).
 - `assign.treatments` has been renamed to `assign_treatments` and moved from `PEcAn.utils` to `PEcAn.MA` since that's the only place where it's used.
 - With new `PEcAn.MA::meta_analysis_standalone` function, `PEcAn.MA::run.meta.analysis.pft` now saves all files all at once _after_ the complete meta-analysis runs (and only if it is successful, including prior and posterior checks), rather than saving intermediate objects (like "JAGS-ified" data) as they are created.
 

diff --git a/book_source/03_topical_pages/05_models/sipnet.Rmd b/book_source/03_topical_pages/05_models/sipnet.Rmd
@@ -1,16 +1,20 @@
-## SiPNET {#models-sipnet}
+## SIPNET {#models-sipnet}
 
 | Model Information ||
 | -- | -- |
-| Home Page | |
-| Source Code | |
-| License |  |
-| Authors | |
+| Home Page | https://pecanproject.github.io/sipnet |
+| Source Code | https://github.com/PecanProject/sipnet |
+| License | BSD 3-Clause |
+| Authors | Michael Longfritz, William Sacks, David Moore, John M. Zobitz, Bobby H. Braswell, David S. Schimel, Rob Kooper, Michael C. Dietze, Istem Fer, Chris Black, David S. LeBauer|
 | PEcAn Integration | Michael Dietze, Rob Kooper |
 
 **Introduction**
 
-Introduction about model
+SIPNET (Simplified Photosynthesis and Evapotranspiration Model) is a lightweight ecosystem model designed to simulate complex environmental dynamics. It tracks carbon, water, nitrogen, and trace greenhouse-gas (N₂O, CH₄) interactions, supporting applications from forest carbon inventories to managed croplands.
+
+Key features include simulation of photosynthesis, respiration, allocation, soil water, soil temperature, and nitrogen cycling on sub-daily time steps. The model tracks vegetation, litter, soil, and mineral-N pools, and includes event-based management for agricultural processes.
+
+For model documentation including model structure, user guide, and developer guide, see the [SIPNET documentation](https://pecanproject.github.io/sipnet). For PEcAn.SIPNET documentation, see the [package website](https://pecanproject.github.io/package-documentation/develop/PEcAn.SIPNET/).
 
 **PEcAn configuration file additions**
 
@@ -30,39 +34,9 @@ SIPNET is configured using 3 files which are placed in the run folder, as well a
 
 **Installation notes**
 
-This section contains notes on how to compile the model. The notes for the VM might work on other machines or configurations as well.
-
-SIPNET version unk:
-
-```
-if [ ! -e ${HOME}/sipnet_unk ]; then
-  cd
-  curl -o sipnet_unk.tar.gz http://isda.ncsa.illinois.edu/~kooper/PEcAn/models/sipnet_unk.tar.gz
-  tar zxf sipnet_unk.tar.gz
-  rm sipnet_unk.tar.gz
-fi
-cd ${HOME}/sipnet_unk/
-make clean
-make
-sudo cp sipnet /usr/local/bin/sipnet.runk
-make clean
-```
-
-SIPNET version 136:
-
-```
-if [ ! -e ${HOME}/sipnet_r136 ]; then
-  cd
-  curl -o sipnet_r136.tar.gz http://isda.ncsa.illinois.edu/~kooper/EBI/sipnet_r136.tar.gz
-  tar zxf sipnet_r136.tar.gz
-  rm sipnet_r136.tar.gz
-  sed -i 's#$(LD) $(LIBLINKS) \(.*\)#$(LD) \1 $(LIBLINKS)#' ${HOME}/sipnet_r136/Makefile
-fi
-cd ${HOME}/sipnet_r136/
-make clean
-make
-sudo cp sipnet /usr/local/bin/sipnet.r136
-make clean
-```
-
-**VM**
+For current SIPNET installation instructions, please see:
+
+- [Installing SIPNET in the PEcAn documentation](https://pecanproject.github.io/pecan-documentation/develop/osinstall.html#sipnet-inst-sipnet)
+- [SIPNET Installation Guide](https://pecanproject.github.io/sipnet/install.html)
+
+The recommended approach is to install SIPNET from the official [SIPNET repository](https://github.com/PecanProject/sipnet)
diff --git a/...ource/03_topical_pages/93_installation/03_install_OS/06_install_models/install_SIPNET.Rmd b/...ource/03_topical_pages/93_installation/03_install_OS/06_install_models/install_SIPNET.Rmd
@@ -1,23 +1,22 @@
-#### SIPNET {inst-sipnet}
+#### SIPNET {#inst-sipnet}
+
+You can download a compiled binary from the [SIPNET releases page](https://github.com/PecanProject/sipnet/releases). 
+
+You can also install SIPNET is from the repository:
+
 
 ```bash
-cd
-curl -o sipnet_unk.tar.gz http://isda.ncsa.illinois.edu/~kooper/EBI/sipnet_unk.tar.gz
-tar zxf sipnet_unk.tar.gz
-rm sipnet_unk.tar.gz
+# Clone the SIPNET repository
+git clone https://github.com/PecanProject/sipnet.git
+cd sipnet
 
-cd sipnet_unk
+# Build SIPNET
 make
-sudo cp sipnet /usr/local/bin/sipnet.runk
+
+# Install the executable (optional - adjust path as needed)
+sudo cp sipnet /usr/local/bin/sipnet
 ```
 
-##### SIPNET testrun
+For detailed installation instructions, build options, and dependencies, please see the [SIPNET Installation Guide](https://pecanproject.github.io/sipnet/install.html).
 
-```bash
-cd
-curl -o testrun.sipnet.tar.gz http://isda.ncsa.illinois.edu/~kooper/EBI/testrun.sipnet.tar.gz
-tar zxf testrun.sipnet.tar.gz
-rm testrun.sipnet.tar.gz
-cd testrun.sipnet
-sipnet.runk
-```
+**Note:** Previous installation methods using tarballs (`sipnet_unk.tar.gz`, `sipnet_r136.tar.gz`) are deprecated. Please use the repository method above for the most up-to-date version. All previous tagged releases are available as source code and compiled binaries from the SIPNET releases page.
diff --git a/models/sipnet/NEWS.md b/models/sipnet/NEWS.md
@@ -1,3 +1,9 @@
+# PEcAn.SIPNET 1.10.0.9000
+
+* Updated README with a more complete model description and instructions for installing SIPNET (#3705)
+
+
+
 # PEcAn.SIPNET 1.10.0
 
 ## Added

diff --git a/models/sipnet/README.md b/models/sipnet/README.md
@@ -2,18 +2,45 @@
 
 <!-- badges: start -->
 
-[![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html#experimental) 
+[![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html#experimental)
 [![PEcAn.SIPNET status badge](https://pecanproject.r-universe.dev/badges/PEcAn.SIPNET)](https://pecanproject.r-universe.dev/PEcAn.SIPNET)
 
 <!-- badges: end -->
 
-PEcAn Functions Used for Ecological Forecasts and Reanalysis
+## What is SIPNET?
+
+The SIPNET v1 (**S**implified PnET (**P**hotosynthesis** and **E**vapo**t**ranspiration)) 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](https://pecanproject.github.io/sipnet).
+
+## 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](https://pecanproject.github.io/pecan-documentation/develop/rendered-demo-notebooks/run_pecan.html)
+- [SIPNET in the PEcAn Book](https://pecanproject.github.io/pecan-documentation/develop/models-sipnet.html)
 
 ## Installation
 
-You can install the development version of `PEcAn.SIPNET` from r-universe like so:
+### Install PEcAn.SIPNET Package
+
+You can install the development version of `PEcAn.SIPNET` from r-universe:
 
-``` r
+```r
 # Enable repository from pecanproject
 options(repos = c(
   pecanproject = 'https://pecanproject.r-universe.dev',
@@ -22,18 +49,28 @@ options(repos = c(
 install.packages('PEcAn.SIPNET')
 ```
 
-Or you can install directly from GitHub with the remotes package like so:
+Or install directly from GitHub:
 
-``` r
+```r
 library(remotes)
-install_github('pecanproject/pecan',  subdir = "models/sipnet")
+install_github('pecanproject/pecan', subdir = "models/sipnet")
 ```
 
-## Example
+### Install SIPNET Model
 
-This is a basic example which shows you how to solve a common problem:
+To use PEcAn.SIPNET, you also need the SIPNET model executable installed on your system. For installation instructions, see:
+- [Installing SIPNET](https://pecanproject.github.io/pecan-documentation/develop/install-models.html#inst-sipnet)
+- [SIPNET Installation Guide](https://pecanproject.github.io/sipnet/install.html)
 
-``` r
-library(PEcAn.SIPNET)
-## basic example code
-```
+## Documentation
+
+- **PEcAn.SIPNET Package Docs:** https://pecanproject.github.io/package-documentation/develop/PEcAn.SIPNET/
+- **SIPNET Model Docs:** https://pecanproject.github.io/sipnet
+- **PEcAn Book - SIPNET Chapter:** https://pecanproject.github.io/pecan-documentation/develop/models-sipnet.html
+- **Source Code:** https://github.com/PecanProject/pecan/tree/develop/models/sipnet
+
+## Learn More
+
+- **PEcAn Project:** https://pecanproject.github.io
+- **Tutorials:** https://pecanproject.github.io/tutorials/
+- **SIPNET Repository:** https://github.com/PecanProject/sipnet