Ice Stream Slowdown Will Drive Long-Term Thinning of the Ros

Details of Research

TitleIce Stream Slowdown Will Drive Long-Term Thinning of the Ross Ice Shelf, With or Without Ocean WarmingAbstractAs time series observations of Antarctic change proliferate, it is imperative that mathematical frameworks through which they are understood keep pace. Here we present a new method of interpreting remotely sensed change using spatial statistics and apply it to the specific case of thickness change on the Ross Ice Shelf. First, a numerical model of ice shelf flow is used together with empirical orthogonal function analysis to generate characteristic patterns of response to specific forcings. Because they are continuous and scalable in space and time, the patterns allow short duration observations to be placed in a longer time series context. Second, focusing only on changes that are statistically significant, the synthetic response surfaces are used to extract magnitude and timing of past events from the observational data. Slowdown of Kamb and Whillans Ice Streams is clearly detectable in remotely sensed thickness change. Moreover, those past events will continue to drive thinning into the future. ©2017. The Authors.

Details

1st AuthorCampbell, A. AuthorCampbell, A.Hulbe, C.Lee, C.-K.Year2018JournalGeophysical Research LettersVolume45Number1Pages201-206DOI10.1002/2017GL075794URLhttps://www.scopus.com/inward/recor.....0a67836b77a741d9606d31597PublisherBlackwell Publishing LtdKeywordsDigital storageModelsOrthogonal functionsRemote sensingSurface propertiesTime series, Empirical orthogonal function analysisMathematical frameworksObservational dataResponse surfaceRoss ice shelvesShort durationsSpace and timeSpatial statistics, Ice, empirical orthogonal function analysisice shelfice streamice thicknessresponse surface methodologyspatiotemporal analysistime series analysis, AntarcticaRoss Ice ShelfWest AntarcticaAuthor Keywordsmodelingresponse surfaceRoss Ice Shelf

Other

CitationCampbell, A., Hulbe, C. and Lee, C.-K. (2018). Ice Stream Slowdown Will Drive Long-Term Thinning of the Ross Ice Shelf, With or Without Ocean Warming. Geophysical Research Letters, 45(1):201-206