Temporal transfer learning for ozone preddiction based on CNN-LSTM model

Tropospheric ozone is a secondary pollutant which can affect human health and plant growth. In this paper, we investigated transferred convolutional neural network long short-term memory (TL-CNN-LSTM) model to predict ozone concentration. Hourly CNN-LSTM model is used to extract features and predict ozone for next hour, which is superior to...

Sudden changes in nitrogen dioxide emissions over Greece due to lockdown after the outbreak of Covid-19

The unprecedented order, in modern peaceful times, for a near-total lockdown of the Greek population as a means of protection against severe acute respiratory syndrome coronavirus 2, commonly known as COVID-19, has generated unintentional positive side-effects with respect to the country’s air quality levels. Sentinel-5 Precursor/Tropospheric...

Modelling ultrafine particle number concentrations at address resolution in Denmark from 1979-2018 – Part 1: Regional and urban scale modelling and evaluation

The integrated model system DEHM/UBM/AirGIS, developed at Aarhus University, Department of Environmental Science, has been extended with the dynamic aerosol module M7 to account for particle number concentrations of particles with diameters below 1 μm in the atmosphere. The aim of this development is to quantify the spatial and temporal...

Changes in power plant NOx emissions over northwest greece using a data assimilation technique (preprint)

In this work, we investigate the ability of a data assimilation technique and space-borne observations to quantify and monitor changes in nitrogen oxides (NOx) emissions over North-Western Greece for the summers of 2018 and 2019. In this region, four lignite-burning power plants are located. The data assimilation technique, based on the Ensemble...

The influence of atmospheric profile resolution on modelling propagation effects in high-elevation scenarios

Using seasonally averaged meteorological and spectrally resolved aerosol profiles extracted from a maritime environment, this paper investigated how the resolution of the vertical profiles influences the 3-5μm and 8-12μm average transmittance and integrated path radiance computations conducted by MODTRAN in high-elevation scenarios. First, the...

Evaluation and error apportionment of an ensemble of atmospheric chemistry transport modeling systems: Multivariable temporal and spatial breakdown

Through the comparison of several regional-scale chemistry transport modeling systems that simulate meteorology and air quality over the European and North American continents, this study aims at (i) apportioning error to the responsible processes using timescale analysis, (ii) helping to detect causes of model error, and (iii) identifying the...

Emissions and possible environmental Implication of engineered nanomaterials (ENMs) in the atmosphere

In spite of the still increasing number of engineered nanomaterial (ENM) applications, large knowledge gaps exist with respect to their environmental fate, especially after release into air. This review aims to summarize the current knowledge of emissions and behavior of airborne engineered nanomaterials. The whole ENM lifecycle is considered...

Evaluation of operational online-coupled regional air quality models over Europe and North America in the context of AQMEII phase 2. Part II: Particulate matter

The second phase of the Air Quality Model Evaluation International Initiative (AQMEII) brought together seventeen modeling groups from Europe and North America, running eight operational online-coupled air quality models over Europe and North America using common emissions and boundary conditions. The simulated annual, seasonal, continental and...

Improvement and extension of the coupling between RACMO2 and LOTOS-EUROS. Technical report

Two-way coupling of Racmo2 and Lotos-Euros

Investigating differences in air quality between urban and rurual regions under current and future climate conditions

The differences between air quality in urban and rural regions has been investigated for the current situation using both observations and modeling and also for future climate conditions.

KKF-Model platform coupling summary report KKF01b

The Netherlands are carrying out the Delta programme to adapt their water management system to climate change and sea level rise. Adaptation needs a number of decisions regarding the way the Netherlands will organize -- in the long -term -- their flood protection system, their water supply and the distribution of this water over the different...

Coupling of the air quality model Lotus-Euros to the climate model Racmo

Ozone and particulate matter have an adverse impact on the health of humans and other organisms. Their concentrations depend not only on emissions but also on meteorological conditions. In a changing climate, their ambient concentrations are therefore expected to change. However, even the sign of the changes is still highly uncertain, especially...

Lotos-Euros with M7