Saharan Dust Records and Its Impact in the European Alps

Greilinger, Marion; Kasper-Giebl, Anne

doi:10.1093/acrefore/9780190228620.013.827

Cited by 11 publications

(6 citation statements)

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“…Collectively these studies, along with others from locations around the world (e.g. Peer et al, 2022;Küfmann, 2003;Greilinger and Kasper-Giebl, 2021;Johnston, 2001;Arvin et al, 2017), emphasize how dust deposition impacts the mountain critical zone (CZ), defined as the "dynamic interface between the solid Earth and its fluid envelopes" (Brantley et al, 2007) and underscore the importance of dust to soil development (Simonson, 1995). However, each of these projects focused on single localities, understandably constrained by the complexity inherent in documenting a ubiquitous process like dust deposition across a broad region.…”

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confidence: 80%

Mineral Dust and Pedogenesis in the Alpine Critical Zone

Munroe,

Santis,

Soderstrom

et al. 2023

Preprint

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Abstract. The influence of mineral dust deposition on soil formation in the mountain critical zone was evaluated at six sites in southwestern North America. Passive samplers collected dust for two years, and representative soil and rock were gathered in the vicinity of each dust sampler. All materials (dust, soil, and rock) were analysed to determine their mineralogy (with x-ray diffraction), geochemistry (with ICP-MS), and radiogenic isotope fingerprint (87Sr/86Sr and εNd). In addition, the grain size distribution of dust and soil samples was determined with laser scattering, and standard soil fertility analysis was conducted on the soil samples. Results reveal that minerals present in the dust, but absent in the local bedrock, are detectable in the soil. Similarly, the geochemistry and isotopic fingerprint of soil samples are more similar to dust than to local bedrock. End-member mixing models evaluating soil as a mixture of dust and rock suggest that the fine fractions of the sampled soils are dominated by dust deposition, with dust contents approaching 100 %. Dust content is somewhat higher in soils over bedrock types more resistant to weathering. These results emphasize the dominant control that mineral dust deposition can exert on pedogenesis on the mountain critical zone.

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confidence: 80%

Mineral Dust and Pedogenesis in the Alpine Critical Zone

Munroe,

Santis,

Soderstrom

et al. 2023

Preprint

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“…The altitude of the station is 1590 m a.s.l., and there are no significant pollution sources nearby. However, aerosols can reach the area through longrange transport from the various industrial and urban areas in Switzerland or surrounding countries and from the Sahara Desert in cases of severe European dust episodes (Greilinger and Kasper-Giebl, 2021).…”

Section: Location and Instrumentationmentioning

confidence: 99%

Sensitivity of aerosol optical depth trends using long-term measurements of different sun photometers

Karanikolas

Kouremeti²,

Gröbner³

et al. 2022

Atmos. Meas. Tech.

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Abstract. This work aims to assess differences in the aerosol optical depth (AOD) trend estimations when using high-quality AOD measurements from two different instruments with different technical characteristics and operational (e.g. measurement frequency), calibration and processing protocols. The different types of sun photometers are the CIMEL that is part of AERONET (AErosol RObotic NETwork) and a precision filter radiometer (PFR) that is part of the Global Atmosphere Watch Precision Filter Radiometer network. The analysis operated for two wavelengths (500 and 501 and 870 and 862 nm for CIMEL–PFR) in Davos, Switzerland, for the period 2007–2019. For the synchronous AOD measurements, more than 95 % of the CIMEL–PFR AOD differences are within the WMO-accepted limits, showing very good measurement agreement and homogeneity in calibration and post-correction procedures. AOD trends per decade in AOD for Davos for the 13-year period of analysis were approximately −0.017 and −0.007 per decade for 501 and 862 nm (PFR), while the CIMEL–PFR trend differences have been found 0.0005 and 0.0003, respectively. The linear trend difference for 870 and 862 nm is larger than the linear fit standard error. When calculating monthly AODs using all PFR data (higher instrument frequency) and comparing them with the PFR measurements that are synchronous with CIMEL, the trend differences are smaller than the standard error. Linear trend differences of the CIMEL and PFR time series presented here are not within the calculated trend uncertainties (based on measurement uncertainty) for 870 and 862 nm. On the contrary, PFR trends, when comparing high- and low-measurement-frequency datasets are within such an uncertainty estimation for both wavelengths. Finally, for time-varying trends all trend differences are well within the calculated trend uncertainties.

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“…and there are no significant pollution sources nearby. However, aerosols can reach the area through long range transport from the various industrial and urban areas in Switzerland or surrounding countries, but also from the Sahara Desert in cases of severe European dust episodes (Greilinger & Kasper-Giebl, 2021). For this study, we use the PFR (N27) Sun photometer, which is part of the WMO AOD reference (Kazadzis et al, 2018b).…”

Section: Location and Instrumentationmentioning

confidence: 99%

Sensitivity of aerosol optical depth trends using long term measurements of different sun-photometers

Karanikolas

Kouremeti

Gröbner

et al. 2022

Preprint

View full text Add to dashboard Cite

Abstract. This work aims to assess differences in the aerosol optical depth (AOD) trend estimations when using high quality AOD measurements from two different instruments with different technical characteristics, operational (e.g. measurement frequency), calibration and processing protocols. The different types of Sun photometers are the CIMEL that is part of AERONET (AErosol RObotic NETwork) and a precision Filter Radiometer (PFR), part of the Global Atmosphere Watch Precision Filter Radiometer network. The analysis operated for two wavelengths (500/501 nm and 870/862 nm for CIMEL/PFR) in Davos, Switzerland, for the period 2007–2019. For the synchronous AOD measurements, more than 95 % of the CIMEL-PFR AOD differences are within the WMO accepted limits, showing very good measurement agreement and homogeneity in calibration and post correction procedures. AOD trends per decade in AOD for Davos for the 13-year period of analysis were approximately -0.017 and -0.007 per decade for 501 nm and 862 nm (PFR), while the CIMEL-PFR trend differences have been found 0.0005 and 0.0003 respectively. The linear trend difference for 870/862 nm is larger than the linear fit standard error. When calculating monthly AODs using all PFR data (higher instrument frequency) and comparing them with the PFR measurements that are synchronous with CIMEL, the trend differences are smaller than the standard error. The trend differences are also larger than the trend uncertainty attributed to the instrument measurement uncertainty, with the exception of the comparison between the 2 PFR datasets (high and low frequency) at 862 nm. Finally, when calculating time-varying trends, they differ within their uncertainties.

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Saharan Dust Records and Its Impact in the European Alps

Cited by 11 publications

References 0 publications

Mineral Dust and Pedogenesis in the Alpine Critical Zone

Mineral Dust and Pedogenesis in the Alpine Critical Zone

Sensitivity of aerosol optical depth trends using long-term measurements of different sun photometers

Sensitivity of aerosol optical depth trends using long term measurements of different sun-photometers

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