Spatial–temporal patterns of surface melting observed over Antarctic ice shelves using scatterometer data

Autor:	Sandip R. Oza
Rok vydání:	2015
Předmět:	geography geography.geographical_feature_category Rift Backscatter Climate change Geology Scatterometer Oceanography Ice shelf Atmosphere Climatology Meltwater Ecology Evolution Behavior and Systematics Scatterometer data
Zdroj:	Antarctic Science. 27:403-410
ISSN:	1365-2079 0954-1020
DOI:	10.1017/s0954102014000832
Popis:	Ice shelves fringing Antarctica are sensitive indicators of climate change due to the direct interface with the atmosphere and ocean. Meltwater induced by atmospheric warming percolates from the surface into hydrofractures and affects shelf stability. Surface melting reduces the microwave backscattering; thus backscatter data is useful in melt monitoring. The Ku-band scatterometer derived melting index (MI) was utilized to assess the decadal (2000–10) variability observed over Antarctic ice shelves. The low intensity melting observed over large ice shelves and high intensity melting observed over the Larsen, Amery, West and Shackleton ice shelves are discussed. A correlation of around 93% was observed between MI variation and rift propagation over Amery Ice Shelf. The El Niño and the Southern Oscillation (ENSO) correlation with MI was also investigated. The paper highlights that scatterometer derived information has the potential to assess meltwater production and rift propagation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a5cb2b01d007d89c2a3584f2d5d37c3 https://doi.org/10.1017/s0954102014000832 Zobrazit plný text záznamu