Articles | Volume 15, issue 15
Atmos. Chem. Phys., 15, 8559–8576, 2015
https://doi.org/10.5194/acp-15-8559-2015
Atmos. Chem. Phys., 15, 8559–8576, 2015
https://doi.org/10.5194/acp-15-8559-2015

Research article 03 Aug 2015

Research article | 03 Aug 2015

Relationships between photosynthesis and formaldehyde as a probe of isoprene emission

Y. Zheng et al.

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Short summary
We apply two global observational data sets, gross primary productivity (GPP) and tropospheric formaldehyde column variability (HCHOv), to probe isoprene emission variability on large spatiotemporal scales. GPP and HCHOv are decoupled or weakly anticorrelated in regions and seasons when isoprene emission is high. Isoprene emission models that include soil moisture dependence demonstrate greater skill in reproducing observed seasonal GPP-HCHOv correlations in the southeast US and the Amazon.
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