By Laura Halbach
Being back in Copenhagen, I feel happy about the regained comfort of modern civilisation: having a comfy mattress to sleep on, no distractions of a flapping tent wall mimicking the noise of bear paws scratching over the tent during the night and a warm and proper shower. While trying to get back into my normal work routine, I am using the opportunity to recap some of the exciting moments on the ice while the memories are still fresh and adding my perspective to the stories below.
The last weeks before Greenland: What a marathon!!
Sitting in the plane to Greenland gave me mixed feelings of excitement, exhaustion and relief. The last weeks before our departure was a marathon and my mind could barely relax, being constantly worried about weather I am forgetting anything. What about all the last minute orders I placed, will everything arrive? Did I mix up anything? Was 0.2 µm really the right pore size for analysis x? In the end, you have what you have on the ice. Knowing that the GFZ team brings their own science kit made me feel a bit more relaxed, since this will allow for some improvisation if something has been forgotten.
First week on the ice: Getting the science started
Arriving at the camp location makes me feel excited: I participated in a range of field work before, but often I could enjoy the comfort of a ship or at least a hut, but now we all would have to deal with living and working in tents. This means limited power supply and exposure to the weather (which turned out to be actually not as bad as I expected after Jason’s warnings about the heavy rainfall that is typical for this region). But that also means, having the possibility to observe the ice crust, the microbes and meltwater dynamics RIGHT OUTSIDE your tent. How cool is that?! Our first week was all about setting up the camp, the lab, our science gear and already spotting some good locations for potential sampling and experimental sites.
Observing cryoconites developing right outside my tent (top-left) and my beautiful bottle incubations (top-right) and me being happy that they worked out (bottom). Photos Laura Halbach
Second week: Science is running and daily routines are established
During the following days, the science took off (as did the algae bloom) and I started to take care of my first experiment: an in situ fertilisation of the glacial microbial community with different nutrients and minerals. I decided that fertilising two times a day would be best, as the nutrients may be quickly washed off. The gardening-like activity (it looked like I am watering imaginary plants) turned out to be a great and relaxing start of the day for me, being a non-morning person. The morning routine was complemented with some nice and creamy porridge and a big smile from Alex, who is always in a good mood and doesn’t mind spreading it. Thanks to Lasse, we ended up with two nice lab tents, each of them fitted with designated lab tables, which were sawed nicely matching the tent shapes.
Our ice camp at the beginning (left) with lots of snow cover and towards the end (right) with melted snow and some melt ponds and streams developing on the ice surface. Photos Laura Halbach
Third week: Science, science, science and wait… is this our last week ?!
During some days of A LOT of rain, I got reminded of how little fun camping in rain is. I try to see the positive side of it and remind myself that we might be lucky to the rain signal in our data sets. The slightly lowered mood in the camp during the days of rain, was contrasted by delicious food cooked in the kitchen tent during all evenings. I still remember that smell of the rich potato, cheese combination a la cuisine francaise by our young star chef Rey, that was just the perfect meal for that weather… So delicious! Somewhere in the middle of our expedition, I started to count our remaining days on the ice and realised that there was not thaaat much time left. The strong rain event showed me how easily all our science activities could be interrupted. Therefore, the next days with better weather would be the time to start the second experiment: again a fertilisation approach but this time under “ex situ” conditions in small glass bottles, which were left on the ice for 24 hours. The bottles were spiked with stable isotopes (C13 and N15) and additionally amended with a phosphorous solution and mineral mixes, the latter kindly provided and prepared by Liane and Rey. Thanks to the big support by Katharina Kitzinger from the Max-Planck-Institute in Germany, the experiment will give new insights into the productivity and nutrient uptake by the whole community, as well as on a single cell level. But since the Greenlandic weather gods don’t seem to like me ending experiments, just as last year, the final sample analysis and filtration work got interrupted by a storm approaching the camp site. Securing the camp site had first priority and we had to take down one of our lab tents, move the other lab tent and secure the whole camp site. Me, trying to be happy that we are not leaving the camp site already on that day (-> = processing ALL samples in the hotel), then rushed through a series of last sample processing and filtration work, trying to use every last hour that was left during our last two days for science. This involved long nights (not too long, since I get far too easily scared by sitting alone in the dark in a tent and again, hearing the noise of potential bear paws outside), early mornings and the support by the whole team, and particularly the big help by Alex and Rey.
Video of the beginning of the storm.
This could have been one of the last pictures taken of Alex: it was the night of the big storm and the night when Alex was almost blown off the ice sheet in his tent (see his video further down), luckily Lasse our hero could save him during the night. Photo Laura Halbach
One of my favourite pictures: showing Alex, in the back, Eva and Rey filtering and sitting at the table and Liane microscoping on the floor, since this was the very last spot available in the tent. The night before, we had to take down the other lab tent, so all lab activities had to be merged together on very little space. Luckily, everyone is easy-going and Liane and Alex, don’t mind improvising. Photo Laura Halbach
Great lab processing team :) Photo Laura Halbach
It took us until the very last day, until all science gear was stored away safely into boxes, locked by several layers of duct tape, that we, finally, took the time to go out for a walk and explore our glacier more. This last evening on the ice was rewarded with an exceptionally beautiful sunset.
I am very proud on what we have achieved, the great team effort that made all of this possible and I can’t wait to see what will come out of the experiments!
Liane and Rey happy (left), ESR's Team (right). Photo Laura Halbach
Last evening on the ice. Photo Laura Halbach
Great team! Photo Laura Halbach