---
description: >-
  Biomass-energy ratio corresponding to the 2nd point on the radiation use
  efficiency curve
---

# bm\_e\_hi

The 1st point on the radiation use efficiency curve is comprised of the ambient CO2 concentration, 330 μL CO2/L air, and the biomass-energy ratio reported for [bm\_e](untitled-17).

Please read the explanation for parameters [co2\_hi](co2_hi) and [bm\_e](untitled-17) to obtain additional information about this parameter and methods used to measure it.
