At the location where in 2010 the largest-ever annual ablation on the Greenland ice sheet was measured, we have now installed a Greenland Guidance draw wire ice ablation tracker – DWIAT in short. The site is located all the way at the southern tip of the ice sheet, where temperatures are relatively high in summer, and where the ice surface is incredibly dark, absorbing a large fraction of the sunlight. Measurements by the PROMICE automatic weather station network tell us that here typically 5-6 m of ice melt off each year – in addition to the snow that accumulated in the preceding winter – which is a lot compared to other Greenland sites. But in 2010 the weather station QAS_L observed a record-setting ablation of more than 9 m of ice here – that’s the equivalent of 3 floors of a building!
To investigate the extreme melt at this site, PROMICE has started a collaboration with the Institute for Marine and Atmospheric Research (IMAU) of Utrecht University. With more instrumentation measuring air-ice interaction on site, tracking ice ablation became even more relevant for data interpretation. That is why the Greenland Guidance DWIAT now measures ablation along side the PROMICE weather station. With it’s reference weight drilled 10 m into the ice, this unit should be capable of recording ablation until at least late summer 2020 – unless 2019 or 2020 proves to be yet another major melt year.
Our draw wire ice ablation tracker (DWIAT) 2019 model was designed to be even sturdier than before. We’ve used the toughest materials including a tripod that won’t suffer from the large forces of compacting winter snow on top. The 2019 model is now taken into production!
Documentary makers Jeannette and Stefan: “Greenland Guidance made our lives as TV makers in Greenland much easier. For operations in Paris, Rome or Madrid you can make last-minute arrangements, but Greenland is a country that is difficult to reach, where you are left wandering without proper input in advance. On several occasions we have praised ourselves lucky with the ideas of Greenland Guidance: for instance that science cruise that we could join instead of a packed tourist ship. Not only do they have great knowledge of the country, they also have ample contacts that come in handy. Do not go to Greenland without them!”
Mike MacFerrin, PhD (University of Colorado Boulder): “My instruments had been transported down from the Greenland ice sheet when I wasn’t around. I’ve had great experiences with the guys of Greenland Guidance in the past, so I had them check on my gear. They made sure that snow and extreme temperatures hadn’t damaged anything. Here’s a big thanks to Greenland Guidance for helping out!”
Late summer 2018, Greenland Guidance supported the maintenance of the automatic weather station network of the Programme for Monitoring of the Greenland ice sheet (PROMICE). The expedition took us past 4 weather stations in the region near Kangerlussuaq, where the countries largest airport is situated. The furthest station location was an hour flying away, on top of the ice sheet at 1840 m above sea level. Being dependent on Air Greenland helicopter transportation, and with a storm approaching the area, the work got squeezed into a shorter-than-ideal period, but successfully wrapped up nonetheless.
Greenland Guidance aided in setting up an expedition to Greenland by production company Witfilm. They are producing a series of episodes on climate change entitled “The Rising Water”, to be aired in fall 2019 on NTR, a Dutch public service broadcaster specialising in information, education and culture.
Greenland Guidance just returned from a month-long expedition to the Greenland ice sheet. We assisted the Geological Survey of Denmark and Greenland (GEUS) in the search of airplane engine parts that were lost during a commercial trans-Atlantic flight in September 2017. The search went according to plan, with productivity and moral being high throughout the expedition! Occasionally temperatures dropped below -30 ºC, and three storms hit camp causing severe whiteout conditions, but otherwise the view was stunning.
In July 2017 CNN filmed in east Greenland for their documentary “Global Warning” to report on the effects of climate change on the ice sheet and beyond. See the stunning footage in the Arctic Melt episode here: https://edition.cnn.com/videos/world/2017/12/04/global-warning.cnn. Greenland Guidance was hired to check the episode for scientific accuracy.