Abstract The parasol effect of volcanic dust and aerosol caused by eruption results in the deepening strengthening Arctic vortex system, thus stimulating or Oscillation (AO). Three strongest AOs more than a century have been linked to eruptions. Every significant fluctuation AO index (AOI = ?H_middle latitudes ? ?H_Arctic) for many years has associated with eruption. Volcanic activity occurring...

One of the powerful means of detecting the volcanic effect on the earth’s radiation budget and, hence, on the earth’s climate is numerical modeling. However, the atmospheric processes, during and after the eruption, are too complex and frequently prohibit an adequate description of the non-unique effect of volcanic activity on the earth’s energy balance and its individual components. This expla...

We present our work on semantically-enabled data and schema registration in the setting of a scientific data integration project: SESDI (Semantically-Enabled Scientific Data Integration), which aims initially to integrate heterogeneous volcanic and atmospheric chemical compound data in support of assessing the atmospheric effects of a volcanic eruption. We use semantic methods through out the p...

Article history: Received 18 September 2015 Received in revised form 1 April 2016 Accepted 8 April 2016 Available online xxxx OnAugust 29, 2014, a lava eruption commenced in theHoluhraun plain, north-east of the Bárðarbunga caldera in Iceland. The eruption ended on February 27, 2015, thus lasting for a period of about 6 months. During these months the magma chamber below the caldera gradually d...

[1] Historic records and research have suggested that the 1783–1784 eruption of the Laki fissure volcano in Iceland impactedNorthernHemisphere climate significantly, probably as a result of the direct injection of volcanic materials into the stratosphere where the volcanic aerosols would linger for years to cause surface cooling across the Northern Hemisphere. However, recent modeling work indi...

Volcanic eruptions are often very destructive events, having a massive impact on the natural and human environment. In order to mitigate the effect of volcanic hazards such as pyroclastic flows, lahars and tsunamis it is necessary to closely monitor volcanoes. Ground surface deformation is recognised as a reliable indicator of an impending eruption and can give clues to magmatic processes at de...

Volcanic plumes generate lightning from the electrification of plume particles. Volcanic plume charging at over 1200 km from its source was observed from in situ balloon sampling of the April 2010 Eyjafjallajökull plume over Scotland. Whilst upper and lower edge charging of a horizontal plume is expected from fair weather atmospheric electricity, the plume over Scotland showed sustained positiv...

Recent observations have shown that explosive volcanic eruptions can generate low frequency surface pressure signals that are observable with microbarographs, and can be interpreted as atmospheric internal waves (Baines & Sacks 2013). Some examples from the Caribbean island of Montserrat are shown in Figure 1. Suitably interpreted, it is possible that these observations may give information abo...