Two weather radar time series of the altitude of the volcanic plume during the May 2011 eruption of Grímsv?tn, Iceland

摘要

The eruption of Grímsv?tn volcano in Iceland in 2011 lasted fora week, 21–28 May. The eruption was explosive and peaked during the firsthours, with the eruption plume reaching 20–25 km altitude. The height ofthe plume was monitored every 5 min with a C-band weather radar located atKeflavík International Airport and a mobile X-band radar, 257 km and75 km distance from the volcano respectively. In addition, photographs takenduring the first half-hour of the eruption give information regarding theinitial rise. Time series of the plume-top altitude were constructed from theradar observations. This paper presents the two independent radar timeseries. The series have been cross validated and there is a good agreementbetween them. The echo top radar series of the altitude of the volcanic plumeare publicly available from the Pangaea Data Publisher (href="http://dx.doi.org/10.1594/PANGAEA.778390"target="_blank">doi:10.1594/PANGAEA.778390).