Solubility of aerosol trace elements: Sources and deposition fluxes in the Canary Region

López-García, Patricia; Gelado-Caballero, M. D.; Collado-Sánchez, C.; Hernández‐Brito, J. J.

doi:10.1016/j.atmosenv.2016.10.035

Cited by 18 publications

(13 citation statements)

References 76 publications

(109 reference statements)

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“…Firstly, various satellite and model data used in this study do not provide quantitative information about dust depositions onto the study area [83][84][85], suggesting that high AI values are not necessarily associated with high iron deposition rates [54,86,87]. Secondly, iron solubility, which is an important consideration in assessing the impact of dust depositions on OPP [88,89], may be different according to the aerosol source types and deposition mode [90][91][92][93][94]. It was reported that iron solubility was widely ranged from~1 to 49% during the dust events in the North Pacific Ocean [95][96][97][98][99].…”

Section: Uncertainties Of the Atmospheric Datamentioning

confidence: 93%

Spring 2018 Asian Dust Events: Sources, Transportation, and Potential Biogeochemical Implications

et al. 2019

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The input of aeolian mineral dust to the oceans is regarded as the major source in supplying bioavailable iron for phytoplankton growth. Severe dust events swept over East Asia during the 26 March to the 4 April 2018, decreasing air quality to hazardous levels, with maximum PM10 mass concentrations above 3000 μg m−3 in northern China. Based on a comprehensive approach that combines multiple satellite measurements, ground observations, and model simulation, we revealed that two severe Asian dust events originating from the Taklimakan and Gobi deserts on 26 March and 1 April, were transported through northern China and the East/Japan Sea, to the North Pacific Ocean by westerly wind systems. Transportation pathways dominated by mineral dust aerosols were observed at altitudes of 2–7 km in the source regions, and then ascending to 3–10 km in the North Pacific Ocean, with relatively denser dust plumes within the second dust episode than there were during the first. Our results suggest that mineral dust emitted from the Taklimakan and Gobi deserts could increase ocean primary productivity in the North Pacific Ocean by up to ~50%, compared to average conditions. This emphasizes the potential importance of the deposition of Asian mineral dust over the North Pacific Ocean for enhancing the biological pump.

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Section: Uncertainties Of the Atmospheric Datamentioning

confidence: 93%

Spring 2018 Asian Dust Events: Sources, Transportation, and Potential Biogeochemical Implications

et al. 2019

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“…Although in the literature there are recent estimates of trace metals solubility from dust (e.g., Chance et al, ; López‐García et al, ; Mackey et al, ; Ravelo‐Pérez et al, ; Winton et al, ), solubility percentages are usually as variable as reported values of atmospheric dust deposition in the ocean. The reasons for such variability include the origin, load, and geochemical characteristics of dust (Baker et al, ; Jickells et al, ; Sholkovitz et al, ) as well as a lack of consensus among the methodologies used for its estimation (Meskhidze et al, ; Raiswell et al, ; Schulz et al, ).…”

Section: Methodsmentioning

confidence: 99%

Atmospheric Inputs of Iron and Manganese to Coastal Waters of the Southern California Current System: Seasonality, Santa Ana Winds, and Biogeochemical Implications

et al. 2017

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The magnitude and temporal variability of mineral dust deposition and its associated Fe and Mn inputs to coastal waters of the California Current System (CCS) has been scarcely investigated. Here we report a 5 year time series (April 2010 to December 2014) of mineral dust (Fdust), Fe (FFe), and Mn (FMn) fluxes to the coastal zone of the southern CCS. Atmospheric deposition displayed a strong seasonal trend, with lowest Fdust, FFe, and FMn during the warm season (May–October), a period dominated by strong moisture‐laden winds of oceanic origin. In contrast, the highest Fdust, FFe, and FMn were recorded during the cool season (November–April), a period characterized by strong winds devoid of moisture coming from the mainland. Our analysis suggests that Santa Ana Wind events could contribute with ∼15%, 20%, and 24%, respectively, to the total annual input of dust, Fe and Mn to the region. Besides, atmospheric soluble Fe inputs are equivalent to between 11% (warm season) and 35% (cool season) of the dissolved Fe supplied by upwelling. Our calculations indicate that atmospheric Fe deposition could explain between ∼5% (warm season) and 15% (cool season) of primary production reported for the southern CCS, suggesting that this route could also be an important input of Fe for primary producers in this region. Finally, the average Fdust, FFe, and FMn for the cool seasons showed a positive interannual trend that was significantly correlated with an intensification of drought conditions over the period 2010–2014 in northwest of Mexico and southwest of the United States.

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“…In addition to the AAS technique (and the equivalent ICP-MS technique (Inductively Coupled Plasma Mass Spectrometry)), non-destructive techniques are applicable and are generally referred to as X-ray fluorescence (XRF) [28][29][30][31][32]. The detailed characterisation and application of AAS and XRF were presented in a paper by Galvão et al [33].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of PM10 Concentrations and Their Elemental Composition Using Two Different Techniques during Winter–Spring Field Observation in Polish Village

et al. 2022

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The aims of this study were to determine the concentrations and elemental composition of PM10 in the village of Kotórz Mały (Poland), to analyse their seasonal variability, to determine the sources of pollutant emissions and to compare the consistency of the results obtained using different methods. Sampling and weather condition measurements were carried out in the winter (January–February) and spring (April) of 2019. Two combinations of different techniques were used to examine PM10 concentrations and their chemical composition: gravimetric method + atomic absorption spectrometry (GM+AAS) and continuous particle monitor + energy dispersive X-ray fluorescence (CPM+EDXRF). In winter, the average concentrations of PM10 measured by the GM and CPM were similar (GM 44.3 µg/m3; CPM 34.0 µg/m3), while in spring they were clearly different (GM 49.5 µg/m3; CPM 29.8 µg/m3). Both AAS and EDXRF proved that in both seasons, Ca, K and Fe had the highest shares in the PM10 mass. In the case of the lowest shares, the indications of the two methods were slightly different. Factor analysis indicated that air quality in the receptor was determined by soil erosion, coal and burning biomass, and the combustion of fuels in car engines; in the spring, air quality was also affected by gardening activities.

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Solubility of aerosol trace elements: Sources and deposition fluxes in the Canary Region

Cited by 18 publications

References 76 publications

Spring 2018 Asian Dust Events: Sources, Transportation, and Potential Biogeochemical Implications

Spring 2018 Asian Dust Events: Sources, Transportation, and Potential Biogeochemical Implications

Atmospheric Inputs of Iron and Manganese to Coastal Waters of the Southern California Current System: Seasonality, Santa Ana Winds, and Biogeochemical Implications

Comparative Study of PM10 Concentrations and Their Elemental Composition Using Two Different Techniques during Winter–Spring Field Observation in Polish Village

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