Melt season duration on Canadian Arctic ice caps, 2000-2004

Melt season duration on Canadian Arctic ice caps, 2000-2004

The extent and duration of summer melt on ice caps in the Queen Elizabeth Islands (QEI), Nunavut, Canada, in 2000–2004 were mapped using enhanced resolution QuikSCAT (QSCAT) scatterometer images. The mean melt duration depends mainly on surface elevation and distance from Baffin Bay. Over most ice c...

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Veröffentlicht in:Geophysical research letters 2005-10, Vol.32 (19), p.L19502.1-n/a
Hauptverfasser: Wang, L., Sharp, M. J., Rivard, B., Marshall, S., Burgess, D.
Format: Artikel
Sprache:eng
Schlagworte:
Earth sciences
Earth, ocean, space
Exact sciences and technology
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Zusammenfassung:The extent and duration of summer melt on ice caps in the Queen Elizabeth Islands (QEI), Nunavut, Canada, in 2000–2004 were mapped using enhanced resolution QuikSCAT (QSCAT) scatterometer images. The mean melt duration depends mainly on surface elevation and distance from Baffin Bay. Over most ice caps, inter‐annual variations in melt duration and the variation in melt duration with elevation are closely related to variations in the July 500 hPa height over the QEI. Pressure‐related variability in the vertical gradient of near‐surface air temperature appears to be a major control on the inter‐annual variations in average melt duration.
ISSN:0094-8276
1944-8007
DOI:10.1029/2005GL023962