Two decades of fumigation data from the Soybean Free Air Concentration Enrichment facility

Elise Kole Aspray, Timothy A. Mies, Jesse A. McGrath, Christopher M. Montes, Bradley Dalsing, Kannan K. Puthuval, Andrew Whetten, Jelena Herriott, Shuai Li, Carl J. Bernacchi, Evan H. DeLucia, Andrew D.B. Leakey, Stephen P. Long, Justin M. McGrath, Franco Miglietta, Donald R. Ort, Elizabeth A. Ainsworth

Research output: Contribution to journalArticlepeer-review


The Soybean Free Air Concentration Enrichment (SoyFACE) facility is the longest running open-air carbon dioxide and ozone enrichment facility in the world. For over two decades, soybean, maize, and other crops have been exposed to the elevated carbon dioxide and ozone concentrations anticipated for late this century. The facility, located in East Central Illinois, USA, exposes crops to different atmospheric concentrations in replicated octagonal ~280 m2 Free Air Concentration Enrichment (FACE) treatment plots. Each FACE plot is paired with an untreated control (ambient) plot. The experiment provides important ground truth data for predicting future crop productivity. Fumigation data from SoyFACE were collected every four seconds throughout each growing season for over two decades. Here, we organize, quality control, and collate 20 years of data to facilitate trend analysis and crop modeling efforts. This paper provides the rationale for and a description of the SoyFACE experiments, along with a summary of the fumigation data and collation process, weather and ambient data collection procedures, and explanations of air pollution metrics and calculations.

Original languageEnglish (US)
Article number226
JournalScientific Data
Issue number1
StatePublished - Dec 2023

ASJC Scopus subject areas

  • Information Systems
  • Education
  • Library and Information Sciences
  • Statistics and Probability
  • Computer Science Applications
  • Statistics, Probability and Uncertainty


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