EARLINET observations of the EyjafjallajÃÂ¶kull ash plume over Europe

Pappalardo, Gelsomina; Amodeo, Aldo; Ansmann, Albert; Apituley, Arnoud; Arboledas, Lucas Alados; Balis, Dimitris; Böckmann, Christine; Chaikovsky, Anatoli; Comerón, Adolfo; D’Amico, Giuseppe; Tomasi, F. De; Freudenthaler, Volker; Giannakaki, Elina; Giunta, Aldo; Григоров, Иван; Gustafsson, Ove; Groß, Silke; Haeffelin, Martial; Iarlori, M.; Kinne, Stefan; Linné, Holger; Madonna, Fabio; Mamouri, R. E.; Mattis, Ina; McAuliffe, Michael A. P.; Molero, Francisco; Mona, Lucia; Müller, Detlef; Mitev, Valentin; Nicolae, Doina; Papayannis, Alexandros; Perrone, Maria Rita; Pietruczuk, Aleksander; Pujadas, M.; Putaud, Jean‐Philippe; Ravetta, François; Rizi, Vincenzo; Serikov, Ilya; Sicard, Michaël; Simeonov, V.; Spinelli, N.; Stebel, Kerstin; Trickl, Thomas; Wandinger, Ulla; Wang, Xuan; Wagner, Frank; Wiegner, Matthias

doi:10.1117/12.869016

Cited by 11 publications

(9 citation statements)

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“…Volcanic particles were observed in the UK, Ireland, Germany and France from very low altitudes up to the upper troposphere throughout most of 2010 Eyjafjallajökull eruptive period (e.g. Pappalardo et al, 2010a;Schumann et al, 2011;Campanelli et al, 2012;Dacre et al, 2011;O'Dowd et al, 2012;Ansmann et al, 2011;Hervo et al, 2012;Matthias et al, 2012). The cloud was also observed over Switzerland, Poland and Norway (Bukowiecki et al, 2011;Markowicz et al, 2012;Campanelli et al, 2012;Schumann et al, 2011).…”

Section: Introductionmentioning

confidence: 82%

“…Two distinct phases of volcaniccloud transport over Europe were observed (Pappalardo et al, 2010a): 15-30 April, when wind transported the emitted material over Central Europe and then towards the SouthSoutheast; after 5 May, when most of the Eyjafjallajökull volcano emissions were transported immediately into western Europe and subsequently towards Italy, the Balkans and Greece.…”

Section: Lidar Measurementsmentioning

confidence: 99%

“…Around 05:00 UTC on 13 May, a significant change in the aerosol transport occurred with air masses coming from north-western Europe, very close to Iceland. Satellite images and ground-based measurements showed the presence of volcanic particles in the corresponding regions (Pappalardo et al, 2010a;Schumann et al, 2011). The analysis of multi-wavelength lidar measurements permitted a detailed aerosol typing.…”

Section: -14 May 2010mentioning

confidence: 99%

“…The cloud reached Italy and Greece starting from 19-20 April, after passing the Alps (Pappalardo et al, 2010a;Lettino et al, 2011;Campanelli et al, 2012;Papayannis et al, 2012). In May 2010, the volcanic cloud was transported over the Iberian Peninsula (Toledano et al, 2012) and then moved towards the East, reaching Italy, Greece and Turkey (Pappalardo et al, 2010a;Papayannis et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

et al. 2012

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Abstract. During the eruption of Eyjafjallajökull in April-May 2010 multi-wavelength Raman lidar measurements were performed at the CNR-IMAA Atmospheric Observatory (CIAO), whenever weather conditions permitted observations. A methodology both for volcanic layer identification and accurate aerosol typing has been developed. This methodology relies on the multi-wavelength Raman lidar measurements and the support of long-term lidar measurements performed at CIAO since 2000. The aerosol mask for lidar measurements performed at CIAO during the 2010 Eyjafjallajökull eruption has been obtained. Volcanic aerosol layers were observed in different periods: 19-22 April, 27-29 April, 8-9 May, 13-14 May and 18-19 May. A maximum aerosol optical depth of about 0.12-0.13 was observed on 20 April, 22:00 UTC and 13 May, 20:30 UTC. Volcanic particles were detected at low altitudes, in the free troposphere and in the upper troposphere. Occurrences of volcanic particles within the PBL were detected on 21-22 April and 13 May. A Saharan dust event was observed on 13-14 May: dust and volcanic particles were simultaneously detected at CIAO at separated different altitudes as well as mixed within the same layer.Lidar ratios at 355 and 532 nm, theÅngström exponent at 355/532 nm, the backscatter-relatedÅngström exponent at 532/1064 nm and the particle linear depolarization ratio at 532 nm measured inside the detected volcanic layers are discussed. The dependence of these quantities on relative humidity has been investigated by using co-located microwave profiler measurements. The measured values of these intensive parameters indicate the presence of volcanic sulfates/continental mixed aerosol in the volcanic aerosol layers observed at CIAO. In correspondence of the maxima observed in the volcanic aerosol load on 19-20 April and 13 May, different values of intensive parameters were observed. Apart from the occurrence of sulfate aerosol, these values indicate also the presence of some ash which is affected by the aging during transport over Europe.

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Section: Introductionmentioning

confidence: 82%

Section: Lidar Measurementsmentioning

confidence: 99%

Section: -14 May 2010mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

et al. 2012

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“…As lidar stations are developing over Europe following volcanic eruptions in Iceland (Chazette et al, 2012;Pappalardo et al, 2010), a sensitivity analysis has also been conducted on the number and locations of lidars. We found that spreading out the lidars regularly over Europe can improve the PM 10 forecast.…”

Section: Discussionmentioning

confidence: 99%

Assimilation of ground versus lidar observations for PM<sub>10</sub> forecasting

et al. 2013

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Abstract. This article investigates the potential impact of future ground-based lidar networks on analysis and short-term forecasts of particulate matter with a diameter smaller than 10 µm (PM 10 ). To do so, an Observing System Simulation Experiment (OSSE) is built for PM 10 data assimilation (DA) using optimal interpolation (OI) over Europe for one month from 15 July to 15 August 2001. First, using a lidar network with 12 stations and representing the "true" atmosphere by a simulation called "nature run", we estimate the efficiency of assimilating the lidar network measurements in improving PM 10 concentration for analysis and forecast. It is compared to the efficiency of assimilating concentration measurements from the AirBase ground network, which includes about 500 stations in western Europe. It is found that assimilating the lidar observations decreases by about 54 % the root mean square error (RMSE) of PM 10 concentrations after 12 h of assimilation and during the first forecast day, against 59 % for the assimilation of AirBase measurements. However, the assimilation of lidar observations leads to similar scores as AirBase's during the second forecast day. The RMSE of the second forecast day is improved on average over the summer month by 57 % by the lidar DA, against 56 % by the AirBase DA. Moreover, the spatial and temporal influence of the assimilation of lidar observations is larger and longer. The results show a potentially powerful impact of the future lidar networks. Secondly, since a lidar is a costly instrument, a sensitivity study on the number and location of required lidars is performed to help define an optimal lidar network for PM 10 forecasts. With 12 lidar stations, an efficient network in improving PM 10 forecast over Europe is obtained by regularly spacing the lidars. Data assimilation with a lidar network of 26 or 76 stations is compared to DA with the previously-used lidar network. During the first forecast day, the assimilation of 76 lidar stations' measurements leads to a better score (the RMSE decreased by about 65 %) than AirBase's (the RMSE decreased by about 59 %).

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Volcanic ash over Europe during the eruption of Eyjafjallajökull on Iceland, April–May 2010

Langmann

Folch

Hensch

et al. 2012

Atmospheric Environment

111

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EARLINET observations of the EyjafjallajÃÂ¶kull ash plume over Europe

Cited by 11 publications

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Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

Assimilation of ground versus lidar observations for PM<sub>10</sub> forecasting

Volcanic ash over Europe during the eruption of Eyjafjallajökull on Iceland, April–May 2010

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EARLINET observations of the EyjafjallajÃÂ¶kull ash plume over Europe

Cited by 11 publications

References 0 publications

Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

Multi-wavelength Raman lidar observations of the Eyjafjallajökull volcanic cloud over Potenza, southern Italy

Assimilation of ground versus lidar observations for PM&lt;sub&gt;10&lt;/sub&gt; forecasting

Volcanic ash over Europe during the eruption of Eyjafjallajökull on Iceland, April–May 2010

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EARLINET observations of the EyjafjallajÃÂ¶kull ash plume over Europe

Assimilation of ground versus lidar observations for PM<sub>10</sub> forecasting