Soil Temperature Soil Temperature Soil temperature probes were inserted in the ground at 5 cm and 15 cm depths in each plot. Data presented here is the average of hourly temperature readings for each Julian day.
Hourly temperatures are also available in a raw form.
Extreme temperature values, e.g., -500 degrees, indicate a malfunctioning probe. In addition, during spring thaws, frost heaving may eject probes from the soil.