Unexpected seasonality in quantity and composition of Amazon rainforest air reactivity

Nature Communications
A C NölscherJ Williams

Abstract

The hydroxyl radical (OH) removes most atmospheric pollutants from air. The loss frequency of OH radicals due to the combined effect of all gas-phase OH reactive species is a measureable quantity termed total OH reactivity. Here we present total OH reactivity observations in pristine Amazon rainforest air, as a function of season, time-of-day and height (0-80 m). Total OH reactivity is low during wet (10 s(-1)) and high during dry season (62 s(-1)). Comparison to individually measured trace gases reveals strong variation in unaccounted for OH reactivity, from 5 to 15% missing in wet-season afternoons to mostly unknown (average 79%) during dry season. During dry-season afternoons isoprene, considered the dominant reagent with OH in rainforests, only accounts for ∼20% of the total OH reactivity. Vertical profiles of OH reactivity are shaped by biogenic emissions, photochemistry and turbulent mixing. The rainforest floor was identified as a significant but poorly characterized source of OH reactivity.

References

Sep 12, 2002·Chemosphere·Valery Isidorov, Maria Jdanova
Apr 5, 2003·Applied and Environmental Microbiology·Steven E Lindow, Maria T Brandl
Dec 11, 2003·Chemical Reviews·Roger Atkinson, Janet Arey
May 1, 2004·Science·Piero Di CarloColleen Campbell
Mar 16, 2007·Proceedings of the National Academy of Sciences of the United States of America·Ranga B MyneniVincent V Salomonson
Apr 3, 2007·Environmental Science & Technology·Allen H Goldstein, Ian E Galbally
Apr 11, 2008·Nature·J LelieveldJ Williams
May 9, 2009·The New Phytologist·Jullada LaothawornkitkulC Nicholas Hewitt
Aug 8, 2009·Science·Fabien PaulotPaul O Wennberg
Aug 7, 2010·Environmental Science & Technology·Vinayak SinhaM Kulmala
Jan 20, 2012·Nature·Eric A DavidsonSteven C Wofsy
Jan 24, 2012·The Journal of Physical Chemistry. a·Terry J DillonJohn N Crowley
Apr 21, 2012·Physical Chemistry Chemical Physics : PCCP·Glenn M WolfeFrank N Keutsch
Oct 19, 2013·Science·Hans ter SteegeMiles R Silman
Feb 28, 2014·Nature·Mikael EhnThomas F Mentel
Oct 23, 2014·Scientific Reports·Josep PeñuelasIolanda Filella
Jul 15, 2015·Scientific Reports·P K MisztalA H Goldstein

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Citations

Apr 30, 2020·Physical Chemistry Chemical Physics : PCCP·Michal LackoPatrik Španěl
May 24, 2020·Global Change Biology·Ana M Yáñez-SerranoJosep Peñuelas
Jun 10, 2018·Nature Communications·E BourtsoukidisJ Williams
May 3, 2018·Scientific Reports·A M Yáñez-SerranoC Werner
Mar 11, 2021·Atmospheric Chemistry and Physics·Katherine R TravisFangqun Yu
Jun 22, 2020·The Science of the Total Environment·Jiaru LiYoshizumi Kajii
Dec 10, 2020·Environmental Science & Technology·Nijing WangJonathan Williams
Oct 5, 2017·Chemical Reviews·Bin YuanJoost A de Gouw
Oct 1, 2021·Environmental Science & Technology·Nora ZannoniJonathan Williams

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