Water soluble reactive phosphate (SRP) in atmospheric particles over East Mediterranean: The importance of dust and biomass burning events

Violaki, Kalliopi; Tsiodra, Irini; Nenes, Athanasios; Parinos, Constantine; Kouvarakis, Giorgos; Zarmpas, Pavlos; Florou, Kalliopi; Panagiotopoulos, Christos; Ingall, Ellery D.; Weber, R. J.; Mihalopoulos, Nikos

doi:10.1016/j.scitotenv.2022.154263

Cited by 6 publications

(4 citation statements)

References 32 publications

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“…Nenes et al [277] also proposed that the processing of mineral aerosol under acidic conditions may increase the bioavailability of phosphorus in soil dust in the presence of atmospheric pollutants. Overall, model simulations undoubtedly indicate that acid-promoted dust dissolution impacts nutrient inputs into the Mediterranean Sea by increasing the soluble Fe and P deposition fluxes [278]. The significant contribution of natural sources to the particulate matter of the region combined with high background regional air pollutant levels, especially in the southeast of the Mediterranean basin, is, nevertheless, shown to be critical for the Mediterranean marine ecosystem and particularly the primary productivity in the region, possibly accounting for up to half of the net primary production rates (see [276]).…”

Section: Biogeochemistrymentioning

confidence: 99%

“…The significant contribution of natural sources to the particulate matter of the region combined with high background regional air pollutant levels, especially in the southeast of the Mediterranean basin, is, nevertheless, shown to be critical for the Mediterranean marine ecosystem and particularly the primary productivity in the region, possibly accounting for up to half of the net primary production rates (see [276]). Recent work by Violaki et al [278] showed that Saharan dust is an important primary source of bioavailable P to the Eastern Mediterranean, especially during the spring period, when 60% of the events occurred. However, the heterogeneity in acidic and alkaline emissions may non-linearly impact the dust acidification and the produced nutrients transferred into the Mediterranean Sea.…”

Section: Biogeochemistrymentioning

confidence: 99%

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Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective

Amiridis,

Kazadzis,

Gkikas

et al. 2024

Atmosphere

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The Mediterranean, and particularly its Eastern basin, is a crossroad of air masses advected from Europe, Asia and Africa. Anthropogenic emissions from its megacities meet over the Eastern Mediterranean, with natural emissions from the Saharan and Middle East deserts, smoke from frequent forest fires, background marine and pollen particles emitted from ocean and vegetation, respectively. This mixture of natural aerosols and gaseous precursors (Short-Lived Climate Forcers—SLCFs in IPCC has short atmospheric residence times but strongly affects radiation and cloud formation, contributing the largest uncertainty to estimates and interpretations of the changing cloud and precipitation patterns across the basin. The SLCFs’ global forcing is comparable in magnitude to that of the long-lived greenhouse gases; however, the local forcing by SLCFs can far exceed those of the long-lived gases, according to the Intergovernmental Panel on Climate Change (IPCC). Monitoring the spatiotemporal distribution of SLCFs using remote sensing techniques is important for understanding their properties along with aging processes and impacts on radiation, clouds, weather and climate. This article reviews the current state of scientific know-how on the properties and trends of SLCFs in the Eastern Mediterranean along with their regional interactions and impacts, depicted by ground- and space-based remote sensing techniques.

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Section: Biogeochemistrymentioning

confidence: 99%

Section: Biogeochemistrymentioning

confidence: 99%

Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective

Amiridis,

Kazadzis,

Gkikas

et al. 2024

Atmosphere

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“…Vulnerability refers to the characteristic that the surface soil of gully watershed is easy to lose. In this paper, SRP model [6] was used to study the vulnerability of gully watershed on the Loess Plateau. The dynamic characteristics of gully watershed refers to the characteristics that the soil quality of gully watershed is easy to change because the gully watershed system is affected by various natural and human factors.…”

Section: Construction Of Simulation Modelmentioning

confidence: 99%

Simulation Study on Control Model of Soil Erosion in Gully Watershed of Loess Plateau

Jin,

Zhang

2024

Frontiers in Artificial Intelligence and Applications

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Soil erosion has caused a series of ecological problems such as soil erosion and environmental deterioration. Moreover, because of the complex terrain in gully watersheds, the process of analysis and regulation by analysts for soil erosion control measures is complicated, which has affected the effectiveness of soil erosion control measures. Therefore, the paper proposes a method of constructing a simulation model of the gully watershed system on the Loess Plateau to analyze its complexity, fragility, and dynamic characteristics, and to conduct in-depth research on soil erosion in the region. On this basis, the paper explores different soil erosion control measures suitable for different morphological patterns, and simulates the differences before and after the implementation of the control measures.Practice has shown that this method can assist soil erosion control personnel comprehensive understanding the situation of the gully watershed system’s soil erosion and determining appropriate soil erosion control measures.

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“…(3233-5488 ng m −3 at PM 2.5 , 3798-4204 ng m −3 at PM 10 ) (Figure S14) reflected the presence of biomass-burning aerosols near the ground. More specifically, the NH 4 + concentrations reflected the presence of biomass-burning and marine aerosols mixed with aerosols originating from the Black Sea [91,92]. Moreover, the concentration of SO 4 2− depends upon local and long-range transport of anthropogenically polluted air masses [93,94].…”

Section: Case Study: 21-26 May 2014mentioning

confidence: 99%

Optical and Microphysical Properties of the Aerosols during a Rare Event of Biomass-Burning Mixed with Polluted Dust

Gidarakou,

Papayannis,

Kokkalis

et al. 2024

Atmosphere

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A rare event of mixed biomass-burning and polluted dust aerosols was observed over Athens, Greece (37.9° N, 23.6° E), during 21–26 May 2014. This event was studied using a synergy of a 6-wavelength elastic-Raman-depolarization lidar measurements, a CIMEL sun photometer, and in situ instrumentation. The FLEXPART dispersion model was used to identify the aerosol sources and quantify the contribution of dust and black carbon particles to the mass concentration. The identified air masses were found to originate from Kazakhstan and Saharan deserts, under a rare atmospheric pressure system. The lidar ratio (LR) values retrieved from the Raman lidar ranged within 25–89 sr (355 nm) and 35–70 sr (532 nm). The particle linear depolarization ratio (δaer) ranged from 7 to 28% (532 nm), indicating mixing of dust with biomass-burning particles. The aerosol optical depth (AOD) values derived from the lidar ranged from 0.09–0.43 (355 nm) to 0.07–0.25 (532 nm). An inversion algorithm was used to derive the mean aerosol microphysical properties (mean effective radius (reff), single scattering albedo (SSA), and mean complex refractive index (m)) inside selected atmospheric layers. We found that reff was 0.12–0.51 (±0.04) µm, SSA was 0.94–0.98 (±0.19) (at 532 nm), while m ranged between 1.39 (±0.05) + 0.002 (±0.001)i and 1.63 (±0.05) + 0.008 (±0.004)i. The polarization lidar photometer networking (POLIPHON) algorithm was used to estimate the vertical profile of the mass concentration for the dust and non-dust components. A mean mass concentration of 15 ± 5 μg m−3 and 80 ± 29 μg m−3 for smoke and dust was estimated for selected days, respectively. Finally, the retrieved aerosol microphysical properties were compared with column-integrated sun photometer CIMEL data with good agreement.

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Water soluble reactive phosphate (SRP) in atmospheric particles over East Mediterranean: The importance of dust and biomass burning events

Cited by 6 publications

References 32 publications

Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective

Natural Aerosols, Gaseous Precursors and Their Impacts in Greece: A Review from the Remote Sensing Perspective

Simulation Study on Control Model of Soil Erosion in Gully Watershed of Loess Plateau

Optical and Microphysical Properties of the Aerosols during a Rare Event of Biomass-Burning Mixed with Polluted Dust

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