With the ongoing, sustained and rapid warming of the high Arctic, the mass loss of the Queen Elizabeth Islands
area is likely to continue to increase significantly in coming decades," Romain Millan, an Earth system science doctoral student at the university and lead author of the study, said in (https://www.eurekalert.org/pub_releases/2017-02/uoc--cgn021417.php) a statement.
Interannual variations in melt duration are closely related to July 500 mb heights over the Queen Elizabeth Islands because of their impact on near-surface air temperature gradients: high mean geopotential heights result in shallow surface air temperature lapse rates and increased melt extent and duration, while low heights produce steep lapse rates and reduced melt extent and duration (Wang et al., 2005).
The strength and position of the July 500 mb circumpolar vortex was observed to drive mass balance variability because of its impact both on summer ablation and on the occurrence of high pressure ridging over the southern Queen Elizabeth Islands. Since 1987, the summer circumpolar vortex has shifted to the east and weakened, increasing ridging and surface air temperatures over the Queen Elizabeth Islands and resulting in more extreme melt years and more negative mass balances (Gardner and Sharp, 2007).
Peary caribou on the Queen Elizabeth Islands
Sea ice in the Queen Elizabeth Islands
is a mix of first-year ice and multi-year ice that remains landfast for more than half the year until breakup in late summer or early autumn (Melling, 2002; Alt et al., 2006; Howell et al., 2006).
Pumice, radiocarbon dates and differential uplift in the eastern Queen Elizabeth Islands
. Canadian Journal of Earth Sciences 7:634-664.
On the Queen Elizabeth Islands
, where environmental conditions are more severe, 20 years is the longest series of consecutive favourable years realized in the last half of the 20th century (e.g., Miller, 1998).
Sightings of Peary caribou were compared from two aerial searches, in 1993 and 1998, on Bathurst and its neighbouring islands, western Queen Elizabeth Islands
in the Canadian High Arctic.
The Danish Van Hauen Expedition of 1939-40, similarly organized, marked the last bout of true exploration of the region, for within a year or two of the end of the war, the whole of the Queen Elizabeth Islands
had been photographed from the air and subsequently mapped.
The study area is the south-central Queen Elizabeth Islands
(Miller, 1998: ca.
At present, only four weather stations exist in the Queen Elizabeth Islands