Science Advances

Supplementary Materials

This PDF file includes:

  • section S1. Use of observed CNOy to represent the average NOx exposure
  • section S2. Determining relation y*i(CNOy)
  • section S3. Approximation of CO3
  • section S4. Derivation of Eq. 5 in the main text
  • section S5. Additional note of Fig. 4 in the main text
  • section S6. Sensitivity tests regarding entrainment process
  • section S7. Error analysis
  • section S8. Comparison of COH,noon obtained in this study with other OH studies
  • fig. S1. Scatterplots of VOC concentrations with NOy concentration for all-weather condition.
  • fig. S2. Simulated daily variation of photolysis frequency of ozone JO3 , normalized to the noontime value JO3,noon, based on Master Chemical Mechanism.
  • fig. S3. Simulated NOy dependence of effective production yields.
  • fig. S4. Observation and simulation of ozone concentration CO3.
  • fig. S5. Simulation using a mixed boundary layer model.
  • fig. S6. Simulated relationship of equivalent noontime OH concentration COH,noon and concentration ratio CPROD/CISOP using the base-case model and a mixed boundary-layer model.
  • fig. S7. Variation in model parametrizations for error analysis.
  • table S1. Production yields and loss rate coefficients for isoprene oxidation products used in the model.
  • table S2. Uncertainty estimates for inferred COH,noon via error propagation.
  • table S3. Summary of inferred OH concentrations over tropical forests in South America.
  • References (41–50)

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