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Supporting the detection and monitoring of volcanic clouds: A promising new application of Global Navigation Satellite System radio occultation

dc.contributor.authorBiondi, R.
dc.contributor.authorSteiner, A.K.
dc.contributor.authorKirchengast, G.
dc.contributor.authorBrenot, H.
dc.contributor.authorRieck, T.
dc.date2017
dc.date.accessioned2017-12-01T12:28:28Z
dc.date.available2017-12-01T12:28:28Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/6340
dc.descriptionThe altitude of volcanic clouds and the atmospheric thermal structure after volcanic eruptions are studied using Global Navigation Satellite System (GNSS) Radio Occultation (RO) profiles co-located with independent radiometer images of ash and sulfur dioxide plumes. We use geographically co-located RO profiles to detect the top altitude of volcanic clouds and to analyze their impact in terms of temperature change signatures. We obtained about 1300 RO profiles co-located with two representative eruptions (Puyehue 2011, Nabro 2011) and found that an anomaly technique recently developed for detecting convective cloud tops and studying the vertical thermal structure of deep convective systems can also be applied to volcanic clouds. Analyzing the atmospheric thermal structure after the eruptions, we found clear cooling signatures induced by volcanic cloud tops in the upper troposphere for the Puyehue case. For the Nabro case we detected a significant warming in the stratosphere which lasted for several months, indicating that the cloud reached the stratosphere. The results are encouraging for future large-scale use of RO data for supporting the monitoring of volcanic clouds and their impacts on weather and climate.
dc.languageeng
dc.titleSupporting the detection and monitoring of volcanic clouds: A promising new application of Global Navigation Satellite System radio occultation
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeAtmospheric structure
dc.subject.freeClouds
dc.subject.freeCommunication satellites
dc.subject.freeRadio
dc.subject.freeRadio navigation
dc.subject.freeSulfur dioxide
dc.subject.freeVolcanoes
dc.subject.freeClimate monitoring
dc.subject.freeConvective systems
dc.subject.freeGlobal Navigation Satellite Systems
dc.subject.freeNabro
dc.subject.freeRadio occultations
dc.subject.freeTemperature changes
dc.subject.freeVolcanic clouds
dc.subject.freeVolcanic eruptions
dc.subject.freeGlobal positioning system
dc.source.titleAdvances in Space Research
dc.source.volume60
dc.source.issue12
dc.source.page2707-2722
Orfeo.peerreviewedYes
dc.identifier.doi10.1016/j.asr.2017.06.039
dc.identifier.scopus2-s2.0-85023612878


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