Related Experiment Video
Updated: Sep 19, 2025

08:49
Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors
Published on: December 21, 2019
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Soil Temperature, Environment, and Moisture Monitoring Network-a low-cost sensing network for Alabama
Nick Perlaky1,2, W Lee Ellenburg3, Udaysankar Nair2,4
1Department of Meteorology and Climate Science, San Jose State University, San Jose, CA, USA.
Environmental Monitoring and Assessment
|June 3, 2025
Summary
A new network of low-cost soil monitoring stations (STEMMNet) was developed to improve drought forecasting in Alabama. The system provides real-time soil data, proving effective and reliable for operational use.
Area of Science:
- Environmental Science
- Hydrology
- Agricultural Engineering
Background:
- Drought assessment and forecasting are critical for resource management in Alabama.
- Existing soil monitoring networks may lack the spatial or temporal resolution needed for operational use.
Purpose of the Study:
- To introduce the Soil Moisture, Temperature, and Environment Monitoring Network (STEMMNet).
- To detail the design, deployment, and performance evaluation of a novel, low-cost environmental monitoring network.
Main Methods:
- Development of a network using commercially available, inexpensive hardware and sensors.
- Comparative analysis of low-cost sensors against research-grade equipment.
- Extensive testing and optimization in diverse environmental conditions.
- Collaboration with agencies like the Alabama Forestry Commission and National Weather Service.
Main Results:
- STEMMNet stations demonstrated comparable accuracy to research-grade networks.
- The network achieved high uptime and robustness after system optimizations.
- Successful validation of the network's versatility and utility through agency collaborations.
Conclusions:
- STEMMNet offers a viable solution for obtaining high-quality, near-real-time soil data.
- The low-cost, rapidly deployable nature of STEMMNet enhances drought assessment capabilities.
- The network supports the transition from climatological analysis to operational environmental monitoring.

