End of Summer Snowline Survey | NIWA

Mt Cook and Mt Tasman

New Zealand’s National Institute of Water and Atmospheric Research [NIWA] has just carried out and published their annual aerial glacier survey, and for all sorts of reasons apart from their most experienced glaciologist taking part, and the pilot, a very experienced mountaineer, both being old friends and integral to it’s success, there is my own interest having traversed many glaciers over decades.

In fact looking back many that I tussled with, negotiating crevasses and ‘schrunds etc. have subsequently ceased to exist. A testament to warmer climes!

I took this photo at a similar time of year to the survey – it’s of Mt Cook and Mt Tasman, with the Hochstetter Icefall draining the Grand Plateau, taken from across the Tasman Glacier in Mt Cook National Park but back in about 1975.

Note the horizontal lines – evidence of lateral moraines, at the lower left and right. Well back in the 50s the Tasman Glacier [flowing right to left] was apparently at that level, and this was confirmed in a conversation I once had with the late Mick Bowie, a very famous mountain guide of this era.
Mt Cook and Mt Tasman

Here is the press release and video of the survey, courtesy of NIWA’s web site [and well done Andy and Trevor]:

NIWA has carried out aerial surveys of over 50 of the South Island’s glaciers every year for more than four decades. The survey’s record the snowline on the glaciers at the end of each summer and provide a time line of glacier-climate interaction stretching back to 1977. Look at the results of the 2018 survey – carried out after New Zealand’s warmest summer on record.

Read more and watch the video at the source: End of Summer Snowline Survey | NIWA