A very-high resolution (20m) measurement-based dust emissions and dispersion modeling approach for the Oceano Dunes, California

Mejía, John F.; Gillies, John A.; Etyemezian, Vicken; Glick, Roger

doi:10.1016/j.atmosenv.2019.116977

Cited by 12 publications

(3 citation statements)

References 39 publications

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“…For the dispersion of biomass burning emissions, we used the LSPDM developed at the Desert Research Institute [39], which has been previously adapted to receive meteorological fields from WRF [8]. Emissions are generated for all grid cells that present active fires in the VIIRS data using the FRP.…”

Section: Transport Of Biomass Burning Emissionsmentioning

confidence: 99%

Differential Effects of the COVID-19 Lockdown and Regional Fire on the Air Quality of Medellín, Colombia

et al. 2021

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Governments’ responses to the COVID-19 pandemic provide a unique opportunity to study the effects of restricted socioeconomic activity on air quality. Here, we study the changes in air pollution levels during the lockdown in Medellín and its metropolitan area, Colombia, for periods with and without enhanced regional fire activity, considering the effects of meteorology using random forest and multiple linear regression methods. The lockdown measures, which reduced mean traffic volume by 70% compared to 2016–2019, resulted in reductions for PM2.5 (50–63%), PM10 (59–64%), NO (75–76%), NO2 (43–47%), and CO (40–47%), while O3 concentration increased by 19–22%. In contrast, when fire activity was high, the effects of the lockdown on air quality were shadowed by the long-range transport of biomass burning emissions, increasing fine particulate matter and ozone. This study shows that healthier levels are achievable through significant efforts from decision-makers and society. The results highlight the need to develop integral measures that do not only consider reductions in the local emissions from transportation and industry, but also the role of fire activity in the region, as well as the difficulties of achieving reductions in ozone from measures that are effective at reducing primary pollutants.

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Section: Transport Of Biomass Burning Emissionsmentioning

confidence: 99%

Differential Effects of the COVID-19 Lockdown and Regional Fire on the Air Quality of Medellín, Colombia

et al. 2021

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“…Pollutants emitted from exhaust pipes constitute 7% of traffic pollution. A dozen or so percent are particles worn off of tires and brake pads [43]. Dust materials arise in natural processes (e.g., Aeolian erosion, sandstorm, wood pollen) and anthropogenic ones (e.g., burning of fossil fuels).…”

Section: Road Transport In Polandmentioning

confidence: 99%

Selected Determinants of Sustainable Transport in the Context of the Development of a Low-Carbon Economy in Poland

et al. 2021

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Road transport is one of the key elements of economic development that helps build social and territorial cohesion. The economic development that has taken place in Poland over the last three decades has led to an improvement in road infrastructure throughout the country. Construction of new roads and improvement of existing ones promotes economic development. However, as the number of cars increases, so does the level of air emissions. In reducing pollutant emissions, the analysis of the technological possibilities used and the improvement of their efficiency with the simultaneous minimization of generated pollution is also of particular importance. The purpose of the publication is to present development trends in road transport in Poland and the possibility of reducing emissions in this respect. The method of analysing strategic documents and statistical data was used to achieve this goal. Moreover, the article shows perspectives for reducing the level of emissions from road transport and refers to the assumptions related to the modernization of the transport sector and reducing its share in carbon emissions and its sustainable development in cities.

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“…Most studies that used the PI-SWERL have been focused on studying the dust emission potential of different soil surfaces at various friction velocities in different regions in the world, e.g., the Namib Desert in Namibia (von Holdt et al, 2017), the Tengger and Mu Us Desert in Northern China (Cui et al, 2019), coastal dunes in California, USA (Mejia et al, 2019), the Colorado Plateau in the USA (Fick et al, 2020), Yellow Lake Playa, USA (Sweeney et al, 2016), Athabasca Oil Sands Region in Canada (Wang et al, 2015), and the Mongolian steppe (Munkhtsetseg et al, 2016). Others aimed to compare the dust emission potential of the PI-SWERL to a wind tunnel, for similar friction velocities (Sweeney et al, 2008;Kavouras et al, 2009;King et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

A cross-comparison of threshold friction velocities for PM10 emissions between a traditional portable straight-line wind tunnel and PI-SWERL

et al. 2021

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Experiments in large wind tunnels have made vital contributions to our knowledge of aeolian processes. However, the size of these instruments makes them impractical for field application. To facilitate field measurements on the dust emission potential of soils, the Portable In-Situ Wind Erosion Lab (PI-SWERL) was developed. Previous research shows that the PI-SWERL can be used to quantify dust emission potentials and (threshold) friction velocities. Studies that compare the PI-SWERL to traditional wind tunnels mainly focus on the dust emission potential at various friction velocities. In the present study, we quantified the threshold friction velocity for PM 10 emission using a PI-SWERL and compare it to results obtained with a straight-line wind tunnel: the Portable Wind and Rainfall Simulator of the University of Basel (PWRS). Tests were performed on two types of substrate: fine sand (NS1) and loamy sand (DS1). For NS1, a threshold friction velocity of 0.33 m s − 1 was identified from both the PI-SWERL and the PWRS data. For DS1, identified threshold friction velocities showed differences: 0.25 m s − 1 by the PI-SWERL and 0.39 m s − 1 by the PWRS. The position of the DustTrak II monitor's inlet tube and variations of the fan's speed by different operators could explain the difference in identified thresholds. Although different threshold friction velocities were obtained for one of the substrates, we believe that comparable results can be achieved by adjusting the experimental design in future research. Therefore, the PI-SWERL can be successfully used to quantify thresholds, facilitating dust emission studies in more remote regions.

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A very-high resolution (20m) measurement-based dust emissions and dispersion modeling approach for the Oceano Dunes, California

Cited by 12 publications

References 39 publications

Differential Effects of the COVID-19 Lockdown and Regional Fire on the Air Quality of Medellín, Colombia

Differential Effects of the COVID-19 Lockdown and Regional Fire on the Air Quality of Medellín, Colombia

Selected Determinants of Sustainable Transport in the Context of the Development of a Low-Carbon Economy in Poland

A cross-comparison of threshold friction velocities for PM10 emissions between a traditional portable straight-line wind tunnel and PI-SWERL

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