Temporally resolved ammonia emission inventories: Current estimates, evaluation tools, and measurement needs

  title={Temporally resolved ammonia emission inventories: Current estimates, evaluation tools, and measurement needs},
  author={Robert W. Pinder and Peter J. Adams and Spyros N. Pandis and Alice B. Gilliland},
  journal={Journal of Geophysical Research},
[1] We evaluate the suitability of a three-dimensional chemical transport model (CTM) as a tool for assessing ammonia emission inventories, calculate the improvement in CTM performance owing to recent advances in temporally varying ammonia emission estimates, and identify the observational data necessary to improve future ammonia emission estimates. We evaluate two advanced approaches to estimating the temporal variation in ammonia emissions: a process-based approach and an inverse-modeled… 

Modeling atmospheric ammonia using agricultural emissions with improved spatial variability and temporal dynamics

Abstract. Ammonia emissions into the atmosphere have increased substantially in Europe since 1960, primarily due to the intensification of agriculture, as illustrated by enhanced livestock and the

Nitrogen Deposition to the United States: Distribution, Sources, and Processes

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Ammonia Emissions in the US: Assessing the Role of Bi-directional Ammonia Transport Using the Community Multi-scale Air Quality (CMAQ) Model

A pilot study assessing bi-directional ammonia (NH3) transport using the Community Multi-scale Air Quality (CMAQ) Model for the Eastern United States (US) is underway. The study develops and tests

Inverse modeling of NH3 sources using CrIS remote sensing measurements

Spatiotemporal uncertainty in NH3 emissions in the US hinders prediction of environmental effects of atmospheric NH3. We conducted 4D-Var inversions using CrIS remote-sensing observations and

Ammonia emissions in the United States, European Union, and China derived by high‐resolution inversion of ammonium wet deposition data: Interpretation with a new agricultural emissions inventory (MASAGE_NH3)

We use the adjoint of a global 3‐D chemical transport model (GEOS‐Chem) to optimize ammonia (NH3) emissions in the U.S., European Union, and China by inversion of 2005–2008 network data for NH4+ wet

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Assessing the discrepancy between modeled and observed distributions of aerosols is a persistent problem on many scales. Tools for analyzing the evolution of aerosol size distributions using the

Agricultural ammonia emissions in China: reconciling bottom-up and top-down estimates

Abstract. Current estimates of agricultural ammonia (NH3) emissions in China differ by more than a factor of 2, hindering our understanding of their environmental consequences. Here we apply both



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An assessment of the ability of three‐dimensional air quality models with current thermodynamic equilibrium models to predict aerosol NO3−

[1] The partitioning of total nitrate (TNO3) and total ammonium (TNH4) between gas and aerosol phases is studied with two thermodynamic equilibrium models, ISORROPIA and the aerosol inorganics model

Modeling the diurnal variation of nitrate during the Pittsburgh Air Quality Study

A thermodynamic model, the Gibbs Free-Energy Minimization model (GFEMN), was used to simulate the partitioning of PM2.5 nitrate aerosol and nitric acid using highly time-resolved inorganic

Ammonia emissions from non-agricultural sources in the UK