A three-year time-series of dust deposition flux measurements in Gran Canaria, Spain: A comparison of wet and dry surface deposition samplers

López-García, Patricia; Gelado-Caballero, M. D.; Santana-Castellano, Desire; Tangil, Miguel Suárez de; Collado-Sánchez, C.; Hernández‐Brito, J. J.

doi:10.1016/j.atmosenv.2013.07.044

Cited by 24 publications

(23 citation statements)

References 37 publications

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“…For instance, it has been reported that F dust ranges between 20 and 49 mg m −2 d −1 in the EBUS of Northwest Africa (Gelado‐Caballero et al, ), and from 27 to 31 mg m −2 d −1 in the Mediterranean Sea (Guerzoni et al, ; Ternon et al, ); marine systems where dust inputs play an important role in influencing the chemical composition of their waters and can also enhance their productivity (Bonnet & Guieu, ; Guieu et al, ; Ohde & Siegel, ). Interestingly, our average F dust (23.1 ± 1.3, Table ) is very similar to that reported for a three‐year time series from the Canary Islands (25.0 ± 0.3 mg m −2 d −1 ; López‐García et al, ), a region that receives the highest dust fluxes in the world due to its proximity to the Sahara and Sahel deserts (Tanaka & Chiba, ).…”

Section: Resultssupporting

confidence: 87%

“… Note . a Jickells et al (); b Aumont et al (); c Mackey et al (); d López‐García et al (); e Gelado‐Caballero et al, (); f Skonieczny et al (); g Delgadillo‐Hinojosa et al (); h Segovia‐Zavala et al (); i Guerzoni et al (); j Ternon et al (); k Ridame et al (); l Al‐Taani et al (); m Chen et al (); n Uematsu et al (). *Background fluxes (without **Sahara outbreaks).…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

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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“…In the Canary Islands, information on WD and DD is very scarce. To knowledge, only [24] reported on WD and DD fluxes, but their study only considered deposition of particulate matter.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Dry and Wet Deposition Fluxes in Two Regions of Contrasting African Influence: The NE Iberian Peninsula and the Canary Islands

et al. 2017

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This study considers the role of distance to the African source on the amount of deposition. To this end, dry and wet deposition was measured at a site close to Africa (Santa Cruz de Tenerife in the Canary Islands, SCO) and at a distant site located in NE Spain (La Castanya, Montseny, MSY). Because of the important influence of African influence on the buildup of particles in the atmosphere, we specifically addressed the contribution of North African events (NAF events) compared to other provenances (no-NAF events) in the wet and dry pathways at the two sites. At the site close to Africa, most of the crustal-derived elements were deposited in the dry mode, with NAF events contributing more than no-NAF events. Marine elements, by contrast, were mostly deposited at this site in the wet form with a predominance of no-NAF events. At MSY, wet deposition of SO 4-S, NO 3-N and NH 4-N during NAF events was higher than at the site close to Africa, either in the wet or dry mode. This fact suggests that mineral dust interacts with pollutants, the mineral surface being coated with ammonium, sulphate and nitrate ions as the dust plume encounters polluted air masses in its way from North Africa to the Western Mediterranean. African dust may provide a mechanism of pollution scavenging and our results indicate that this removal is more effective in the wet mode at sites far away from the mineral source.

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“…Thus, the underestimation due to dissolution would probably be lower in the case of dry deposition. The highest uncertainty of 13 % is inferior to the common discrepancy on the deposition fluxes estimated from different dry deposition samplers (Goosens and Rajot., 2008;López-García et al, 2013). To conclude, taking into account the underestimation of the soluble fraction, the CARAGA samples seem to be relevant for estimating the total deposition fluxes of Al, Fe, P, Co, Cr, Cu, Ni, Mn, Ti, V and Zn.…”

Section: Estimation Of Contamination During Caraga Protocolmentioning

confidence: 99%

Estimating chemical composition of atmospheric deposition fluxes from mineral insoluble particles deposition collected in the western Mediterranean region

Desboeufs

Vincent

et al. 2017

Atmos. Meas. Tech.

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Abstract. In order to measure the mass flux of atmospheric insoluble deposition and to constrain regional models of dust simulation, a network of automatic deposition collectors (CARAGA) has been installed throughout the western Mediterranean Basin. Weekly samples of the insoluble fraction of total atmospheric deposition were collected concurrently on filters at five sites including four on western Mediterranean islands (Frioul and Corsica, France; Mallorca, Spain; and Lampedusa, Italy) and one in the southern French Alps (Le Casset), and a weighing and ignition protocol was applied in order to quantify their mineral fraction. Atmospheric deposition is both a strong source of nutrients and metals for marine ecosystems in this area. However, there are few data on trace-metal deposition in the literature, since their deposition measurement is difficult to perform. In order to obtain more information from CARAGA atmospheric deposition samples, this study aimed to test their relevance in estimating elemental fluxes in addition to total mass fluxes. The elemental chemical analysis of ashed CARAGA filter samples was based on an acid digestion and an elemental analysis by inductively coupled plasma atomic emission spectroscopy (ICP-AES) and mass spectrometry (MS) in a clean room. The sampling and analytical protocols were tested to determine the elemental composition for mineral dust tracers (Al, Ca, K, Mg and Ti), nutrients (P and Fe) and trace metals (Cd, Co, Cr, Cu, Mn, Ni, V and Zn) from simulated wet deposition of dust analogues and traffic soot. The relative mass loss by dissolution in wet deposition was lower than 1 % for Al and Fe, and reached 13 % for P due to its larger solubility in water. For trace metals, this loss represented less than 3 % of the total mass concentration, except for Zn, Cu and Mn for which it could reach 10

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A three-year time-series of dust deposition flux measurements in Gran Canaria, Spain: A comparison of wet and dry surface deposition samplers

Cited by 24 publications

References 37 publications

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

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

Quantifying Dry and Wet Deposition Fluxes in Two Regions of Contrasting African Influence: The NE Iberian Peninsula and the Canary Islands

Estimating chemical composition of atmospheric deposition fluxes from mineral insoluble particles deposition collected in the western Mediterranean region

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