top of page

Reference Library - Supporting Scientific Documents

SubterraGreen_White.png

Subterra Green stands on a foundation of rigorous research. Our Technical Overview draws on the knowledge of a larger compendium of academic literature. For those seeking further information about our products, we offer supporting reference papers. The four most-relevant and commonly cited papers are listed with a short description below.  

dreamstime_m_148834082.jpg

Technical
Overview Paper

This technical packet describes the current version of the Subterra Green, a field ready device used in the measurement of soil organic carbon concentration for precision agricultural and carbon credit markets. This packet describes the underlying technology, equipment, and software, as well as background information on other methods for measuring soil organic carbon concentration and modeling soil organic carbon stocks. 

Reference
Paper #1

The authors of this article summarize the current research and results of visible near infrared (Vis-NIR) spectroscopy for in-field soil measurements. The authors provide a very basic meta-analysis of various in-field techniques.  

In-Field Spectroscopy

Reference
Paper #2

This article is a meta-analysis of proximal sensing techniques (i.e. spectroscopy). The authors evaluate whether or not the claims of cost reduction, efficiency, accuracy, and precision are valid.  

Proximal Sensing for Soil Carbon Accounting

Reference
Paper #3

The authors of this article give an overview of the various ways of measuring soil organic carbon stock, the importance of estimating stocks, and the challenges in creating accurate and precise estimates.  

How to Measure, Report, and Verify Soil Carbon Change

Reference
Paper #4

Viscarra et al. review the advantages and disadvantages of spectroscopy methods for estimating soil properties. Of note is the section on spectral libraries and building models from machine learning. The authors provide a clear case for why soil spectral libraries are useful for local or regional predictive modeling of soil properties, but less useful for global or national-scale modeling.  

Diffuse Reflectance Spectroscopy (DRS)

Note: S4 will provide these documents free of charge. Copyright law requires direct contact with Russell Pier for distribution. We encourage you to reach out for the full scientific context.

Ready to Get Technical?

Download the Subterra Green overview paper now! Get the full scientific overview—no forms, no paywalls, just knowledge.

REQUEST SUPPORTING REFERENCE PAPERS

For deeper academic insight, contact Russell Pier directly.
We’ll provide the referenced documents.

Academic transparency. Forensic innovation. Field-ready results.
bottom of page