Effects of temperature-dependent NO&amp;lt;sub&amp;gt;&amp;lt;i&amp;gt;x&amp;lt;/i&amp;gt;&amp;lt;/sub&amp;gt; emissions on continental ozone production

Romer, P.; Duffey, K.; Wooldridge, P. J.; Edgerton, Eric S.; Baumann, Karsten; Feiner, P. A.; Miller, David O.; Brune, William H.; Koss, A.; Gouw, J. A. de; Misztal, Pawel K.; Goldstein, Allen H.; Cohen, R. C.

doi:10.5194/acp-18-2601-2018

Cited by 78 publications

(47 citation statements)

References 67 publications

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“…In our sensitivity simulations we have grouped together several different processes and calculated the cumulative impact of these processes on the O 3 -temperature relationship (e.g., the difference between the Transport and +Chemistry simulations includes the cumulative impact of the temperature dependence of kinetics, soil NO x and biogenic VOC emissions, and fields related to solar radiation fluxes). While we have not performed simulations to further isolate the relative role of different processes, several other studies have done such calculations or provide insights into the importance of these processes (e.g., Coates et al, 2016;Jacob et al, 1993;Porter & Heald, 2019;Romer et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…In this study we use dO 3 ∕dT to (1) evaluate the performance of the GMI CTM by examining the sensitivity of modeled O 3 to changes in temperature against the observed sensitivity and (2) quantify the relative differences in the sensitivity of O 3 to temperature between our simulations. Determining dO 3 ∕dT with OLS is the most common approach in the literature (e.g., Barnes & Fiore, 2013;Bloomer et al, 2009;Meehl et al, 2018;Rasmussen et al, 2012;Romer et al, 2018;Strode et al, 2015) and allows us to compare our results with previous studies.…”

Section: Metricsmentioning

confidence: 91%

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Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

et al. 2019

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Summertime surface‐level ozone (O3) is known to vary with temperature, but the relative roles of different processes responsible for causing the O3‐temperature relationship are not well quantified. In this study we use simulations of NASA's Global Modeling Initiative chemical transport model to isolate and assess the relative impact of atmospheric transport, chemistry, and emissions on large‐scale O3 variability, events, and and the covariance of O3 with temperature. Using observations from the Clean Air Status and Trends Network in the contiguous United States, we show that the Global Modeling Initiative chemical transport model reproduces the spatiotemporal variability of O3 and its relationship with temperature during the summer. We use the change in O3 given a change in temperature (dO3/dT) along with other metrics to understand differences between our simulations. In regions with moderate to strong positive correlations between temperature and O3 such as the northeast, Great Lakes, and Great Plains, temperature's association with transport yields a majority of the total O3‐temperature relationship (∼60%), while temperature‐dependent chemistry and anthropogenic NO emissions play smaller roles (∼30% and ∼10%, respectively). There are regions, however, with insignificant correlations between temperature and O3, and our findings suggest that transport is still an important driver of O3 variability in these regions, albeit not correlated with temperature. Transport is not directly dependent on temperature but rather is linked through an indirect association, and it is therefore important to understand the exact mechanisms that link transport to O3 and how these mechanisms will change in a warming world.

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Section: Discussionmentioning

confidence: 99%

Section: Metricsmentioning

confidence: 91%

Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

et al. 2019

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“…Soil emissions account for~25% of the global annual NO x budget, with >40% of summertime satellite NO 2 column observations attributed to fertilized soil emissions (Hudman et al, 2010;Vinken et al, 2014). The relative contributions of soil emissions to the NO x budget are increasing as fossil fuel NO x emissions decline (Miyazaki et al, 2017) and as air temperatures increase, with implications for ozone formation (Romer et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Isotopic Composition of In Situ Soil NO_x Emissions in Manure‐Fertilized Cropland

Miller

Chai

Guo

et al. 2018

Geophysical Research Letters

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Soil emissions represent ~25% of the global annual atmospheric budget of nitrogen oxides (NOx). The nitrogen isotopic composition of soil NOx emissions (δ15N‐NOx) is potentially useful to track soil emission contributions to NOx budgets, yet its in situ variations with fertilizer management and meteorology are unknown. We quantify in situ δ15N‐NOx distributions from liquid dairy manure‐fertilized cropland in State College, Pennsylvania at hourly resolution during spring 2016 and 2017. δ15N‐NOx (n = 37) ranged from −44.2 to −14.0‰ and was distinct between injected (−32.2 ± 12.1‰) and broadcast manure without tillage (−23.4 ± 2.1‰). δ15N‐NOx was not correlated with order of magnitude emission variations due to large changes in soil moisture. δ15N‐NOx differences between treatments were associated with nitrification and NO consumption contributions. Our results suggest that δ15N‐NOx can be a valuable observational tracer of soil emissions and varies with fertilizer management practices.

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“…The O 3 -temperature relationship originates in: (1) temperaturedependent biogenic VOC emissions, (2) thermal decomposition of PAN to HO x and NO x , (3) increased likelihood of favorable meteorological conditions for ozone formation (Abeleira and Farmer, 2017). However, there are major uncertainties in the mechanisms underlying the temperature-dependent changes in O 3 concentrations, their interactions, and relative contributions in rural and remote regions (Romer et al, 2018). Ozone chemistry regimes are shifting as precursor emissions are changing (Abeleira and Farmer, 2017).…”

Section: Complex Atmospheric Chemistry Of Omentioning

confidence: 99%

“…The association between meteorological factors, precursor emissions, and O 3 daily variability might differ in urban and rural areas. Whereas the precursor emissions used to be much higher in urban areas, in rural regions the precursors are lower, in particular with respect to NO x (Romer et al, 2018). Most papers on this issue examine the O 3 regime in urban areas (e.g., Duenas et al, 2002;Tan et al, 2018), whereas the papers on rural regions are less frequent (e.g., Pudasainee et al, 2006).…”

Section: Complex Atmospheric Chemistry Of Omentioning

confidence: 99%

What Are the Principal Factors Affecting Ambient Ozone Concentrations in Czech Mountain Forests?

Hůnová

Brabec

Malý

2019

Front. For. Glob. Change

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The aim of our study was to identify the factors substantially affecting day-to-day variability in O 3 concentrations in Czech mountain forests and to describe their influence in detailed, quantitative way. We examined the effects of meteorology and ambient NO x recorded in regular long-term continuous monitoring at five mountain forest sites representing different regions, covering both polluted and relatively unpolluted areas over the time period of 1992-2018. To investigate the association between ambient O 3 concentrations on one hand, and precursor NO x concentrations, and meteorology on the other hand, we used a generalized additive model, GAM, with semiparametric (penalized-spline-based) components to capture properly the possible departures from linearity that is not captured by traditional linear regression approaches. Our results revealed that the O 3 concentrations showed significant associations with all selected explanatory variables, i.e., air temperature, global solar radiation (GLRD), relative humidity, and NO x . Apparently, both meteorology and air pollution are highly important for day-to-day O 3 concentrations, and this finding is consistent for all five rural sites, representing middle-elevated forested mountain areas in Central Europe. In addition to individual variables, we were able to detect interactions between three pairs of explanatory variables, namely temperature * GLRD, temperature * relative humidity, and GLRD * relative humidity. Moreover, we confirmed non-linear O 3 behavior toward all individual explanatory variables.

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Effects of temperature-dependent NO<sub><i>x</i></sub> emissions on continental ozone production

Cited by 78 publications

References 67 publications

Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

Isotopic Composition of In Situ Soil NO_x Emissions in Manure‐Fertilized Cropland

What Are the Principal Factors Affecting Ambient Ozone Concentrations in Czech Mountain Forests?

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Effects of temperature-dependent NO&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt; emissions on continental ozone production

Cited by 78 publications

References 67 publications

Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

Disentangling the Drivers of the Summertime Ozone‐Temperature Relationship Over the United States

Isotopic Composition of In Situ Soil NOx Emissions in Manure‐Fertilized Cropland

What Are the Principal Factors Affecting Ambient Ozone Concentrations in Czech Mountain Forests?

Contact Info

Product

Resources

About

Effects of temperature-dependent NO<sub><i>x</i></sub> emissions on continental ozone production

Isotopic Composition of In Situ Soil NO_x Emissions in Manure‐Fertilized Cropland