Tuesday, May 31, 2016

From Erich at core 6- Memorial Day!

Hi folks its Erich here. This has been an amazing expedition for me. Bob, HP and I have been planning this research for over 5 years, and intensely planning this field season for the past 8 months. We're now a week away from finishing the year 1 expedition, and all that planning has really paid off. We're on schedule to complete all of our research objectives - which were pretty ambitious to begin with. I couldn't be happier with how things have gone this year.

We have a storm day here on Memorial Day, so I have some time to share with you some of my thoughts about the expedition so far.
Greetings from Camp Dartmouth!
Climate Change Evidence is Everywhere

Our overall research objectives here are to understand how climate change is affecting the balance of snowfall and surface melting on the Greenland ice sheet - and ultimately what that means for future sea-level rise. 2015 SHATTERED the record for highest global average temperature, and 2016 is setting a pace to break that record. During this expedition, it's impossible to miss the impact that climate change is already having here.

We can start in the weeks before we even got on the plane in Scotia, NY. The Greenland science community was buzzing on April 11 as surface temperatures over much of the Greenland ice sheet went above freezing and we had our earliest melt event on record. To put it into context, we wanted to avoid surface melting as much as possible on this trip (bad for radar data, ice coring, and snow camping), which is why we chose to be here in late April and May, into early June. Usually we don't see surface melting at our locations until mid June or later. So to see in EARLY APRIL (!) was stunning.

The culprit was a big loop in the Jet Stream called an Omega Blocking pattern. This brings warm air from the south up to Greenland, but moves cold air down over areas to the east and west of Greenland like to the USA East Coast. These blocking patterns tend to persist for weeks at a time, and it was still in place when we arrived in Kanger on April 25 when it was in the 60's or warmer for that first week. Kanger is usually still feet-deep in snow in late April - but it was snow-free and brown this year (like New Hampshire was all winter!). The rivers draining the ice sheet were flowing much faster than normal, and the local hunters were unable to get to their normal sites because the sea ice was melted too far back.
t-shirt weather in Kangerlussuaq, Greenland...

Meanwhile, it was snowing in Hanover, NH!! Yes, it was 30+ degrees warmer in Greenland than in Hanover in late April. Gabe was wearing shorts and tee-shirts in Kanger while our families back home dealt with a late-season snow storm. The same type of blocking pattern produced the famous melting event in July 2012 that caused surface melting even at Summit, Greenland.

The question is - what causes these blocking patterns? And are they related to climate change?

This is an area of active research and some debate in the climate science community. It's also a particularly important question because it represents the interface between climate change and weather change. Of course, people experience weather changes, so it strongly influences people's perception of climate change. A research group out of Rutgers led by Dr. Jennifer Francis has shown that declining arctic sea ice and snow cover in Siberia (both definitely from climate change) help to contribute to these blocking events. The jet stream responds to temperature gradients from the equator to the pole. As the arctic warms faster than the mid latitudes with climate change (due to things like melting sea ice and decreasing snow cover!), the jet stream tends to slow down, and as it does, you can get more of these big jet stream loops than cause blocking highs. So while I'd personally say that the science on this point is not settled, there is good evidence that these blocking patterns happen more frequently with climate change.
Omega Blocking in Greenland leading to melt events

(SIDE NOTE: The reason why Hurricane Sandy veered west into New Jersey - an EXTREMELY rare course for a hurricane to take - was due to one of these blocking patterns).

In the ice cores we are collecting, we can see that these surface melting events have become more and more common in recent years. The ice that forms when snow melts and then refreezes looks very different than the ice that forms when snow slowly compacts over time without melting. So we can distinctly see summer melt events in the ice cores as we collect them. 2012 stands out as a huge melt year in our observations here - that was a really warm summer in Greenland including the previous July Omega Block melt event. It's a solid meter of refrozen meltwater in the ice cores, and it stands out as a very dark reflector in our radar data. As the cores go deeper and deeper, further back in time, we see fewer and thinner refrozen meltwater layers. This is consistent with our records from Greenland weather stations showing warming temperatures since the 1950s. In a paper we published last year, we showed that if you remove the temperature signal caused by natural climate cycles (including the North Atlantic Oscillation and Atlantic Multidecadal Oscillation), there has been a steady warming in NW Greenland of 2.9oF since 1952. That's about three times the global average warming rate.

It's turned much colder here for the past week, which has been nice for our work. But our custom weather forecast from GreenTrACS project PI Dr. Sean Birkel (at UMaine) shows more possible surface melting on Thursday and Friday. I have a feeling that this summer is going to be like the summer of 2012 - record low sea ice, low snow cover, and frequent melt events in the Arctic. 2015 was such a hugely warm year, all that heat in the atmosphere is not just going away. Stay tuned.

A Science Machine

The night before we flew from Kanger to Raven/Dye-2, Gabe posed the question at dinner: "What are you most looking forward to?" 
My response: "I'm looking forward to 5 days from now when we have things figured out, everything is working, and we're dialed in".

5 days was a little on the optimistic side. It took more like 10 days before I'd say we were fully dialed in - a science machine. In those 10 days we learned:

  • How our suite of scientific instruments can best be hauled across the ice sheet to get the best data. This is no small task. The power requirements alone for the 4 independent radar systems are challenging, plus the 7 (yes, that's 7) different GPS's we have running (which doesn't include the handheld Garmin GPSs we use to navigate the snow machines). And then there's the laser. Yes, we're dragging a laser across the ice sheet (cue Dr. Evil). Each instrument 'likes' to collect data at different speeds, at different heights above the ice, at different time intervals, and has different science objectives. We now have a 'science sled' that works well for us almost all the time.
  • How to best haul 55-gallon drums of gasoline from site to site. It's hard to do much with a snow machine without gasoline. During the first traverse day we punctured 3 of the 4 drums of gasoline we had at that time! This was a HUGE problem!! They were slow leaks - although we still ended up bathed in gasoline - and a little bubble gum helped to stem the flow until we got new empty drums to transfer the fuel into (thanks for the tip, MacFerrin!).
You can imagine (although, why would you?) that there are dozens of possible ways to cargo-strap a drum of gas to a sled: upright, on its side long ways, cross ways, with various types and amounts of padding in various places, with the straps crossed, or parallel, hooks pointed in, hooks out, etc etc.

We approached the problem like scientists. After transferring the fuel from the punctured drums to new drums, we had some punctured, empty, useless drums to experiment with. So we tried all these different possible strategies and after each new attempt, drove the sled around camp at high speed (thanks Gabe!) to see how much the drum moved and dented. After several hours of this, we found the ideal (we think) solution. So how do you best haul 55 gallon-drums of gasoline across an ice sheet? Starting with a wide siglin sled, put down two tarps (padding), then a sheet of plywood (doesn't slip), then two ridgerest foam sleeping pads, then the drum on its side across the width of the sled on the pads, with two cargo straps crossing the drum diagonally (making an X) to secure it in place. Between the drum and cargo straps are another 2 foam sleeping pads, and then a heavy canvas tarp to prevent the ratchet on the straps from rubbing through the pads down the drum (which would puncture the drum). The cargo strap hooks need to be looped through the sled tie-downs and hooked back on themselves, or hooked to a metal caribiner (so they don't rub through and break the tie-downs), with all hooks facing away from the drum (again, that puncture thing). And voila - you have a safe and reliable way to move fuel around the ice sheet. Just in case you were wondering.

The ideal drum tie-down
  • We also learned in these 10 days what our schedule would be at each camp/science site. It's important to develop a rhythm of day-to-day life so that everyone knows what is expected of them and what is possible in these conditions. How far can we really go on a radar 'spur' to the east or west in a day? How long does it take us to drill a 30 m ice core? How long does it take to setup and breakdown camp? (more on that below). So our ideal schedule is:
Day 1: Camp move
Day 2: Drill ice core and radar spur to the west
Day 3: Cache run to next site, and radar spur to the east, and camp radar survey.
Day 4: Camp move
This ideal schedule only worked out once - at Site 3. Throw in storm days when we can't work, equipment malfunctions, etc, and we usually add another 1-2 days to each site. But we found our rhythm and that's what's most important.

  • Related to the schedule was learning what everyoneís roles would be - not just for the science, but for the day-to-day camp activities as well. Who would take responsibility for each instrument? Who would backup data each night? Who is a good cook (Thomas)? Who's not (no need to shame here)? Who's good at building the bathroom (Forrest)? Who has the best skills with small electronic devices (Gabe)? This was all part of becoming a well-oiled science machine.
Chef Thomas with MegaSoup2.0

A Typical Camp Move Day

Our moves from one camp to the next are some of our longest and most challenging days. Here's what they are like:
7ish: Wake up. Start packing up personal gear in tent. Turn on generator to top up science instrument batteries.
7:30: Daily check in with our CPS logistics team in Kangerlussuaq
8:00: All personal gear packed and personal tents empty. Breakfast.
9:00: Gabe, Forrest and Erich start breaking down personal tents and building sleds. Thomas and Tate prepare the radars and science sleds for the day's data collection between campsites.
10:30ish: Start breaking down the kitchen and science tents and continue building sleds.
Noonish: Tate and Thomas start slowly (~10 kph) traversing to the next camp, collecting data the whole way. Erich, Forrest and Gabe continue building sleds and finishing camp breakdown. Break down the bathroom tent.
1:30ish: Gabe, Forrest and Erich are done - have some lunch.
2ish: Erich, Gabe and Forrest start traversing to next camp at ~25 kph.
3ish: Forrest, Gabe and Erich pass Thomas and Tate on the 'road' and check in with them.
5:00ish: Forest, Gabe and Erich arrive at new camp. Start by padding down the tent platforms by driving back and forth with loaded sleds in an east-west orientation. The strongest winds come from the south, so we orient camp in a roughly east-west line to prevent one tent from causing snowdrifts on another.
5:15: Setup kitchen Arctic Oven tent. We can have this fully setup, with everything back to its place inside, in about 30 minutes.
5:45: Setup science Arctic Oven tent. Again, everything back in its place in 30 minutes.
6:15: Erich and Gabe setup the 4 personal tents (Forrest prefers to sleep in the Pod so no personal tent). Forrest sets up the bathroom tent. Each personal tent takes about 10 minutes to put up and fully stake out. We've now setup and broken down these Mountain Hardwear Trango3 tents 44 times. We're getting good at it.
7:00: Erich and Gabe setup cots and personal gear in each tent, dig out boot bays at the entrances, and berm the personal tents with snow. Tate and Thomas check in via sat phone and give their ETA - usually around 9 pm. Forrest starts making dinner.
8:00: Gabe, Erich and Forrest gather in the kitchen tent and start eating dinner.
9:00: Thomas and Tate arrive - usually very cold. Snow machines are fueled and oiled, science instruments turned off, generator turned on to recharge batteries, and they eat dinner.
10:00: Data backup and eventually collapse in bed.
Camp all set up

What is amazing is how each camp feels the same. Everything is in roughly the same place at each site, and in the same place inside each tent. And the scenery doesn't change (flat & white). So itís like groundhog day. It must be particularly odd for Thomas and Tate to leave one camp, drive all day, and then seemingly arrive at the same camp that night.
Tate with the science sled on a late arrival...

A Frozen Ocean

It's amazing to me how snowmobiling across an ice sheet feels so similar to power boating across the open ocean. I did my Master's degree research in New Zealand out on a research vessel studying underwater canyons far at sea - so I have some experience doing both now.

It's flat as far as you can see in every direction, just like being out at sea. The winds makes sastrugi - waves of snow - that feel just like waves on the sea. There are rough days and smooth days, related to wind strength and direction. Whereas ocean waves form in minutes to hours and move in seconds, sastrugi form in hours to days and move just as slowly. The sound and smell of the snowmobile engines even evoke memories from New Zealand for me. In both situations, you are utterly out of place as a human. Get rid of the boat or snow machine and tents, and you are not long for the world. In both, you occasionally see some wildlife. The other day we had a seagull fly overhead and the analogy was complete. Of course, the similarities make sense: they are both just water in either solid or liquid form.
Forrest and Gabe holding the moon...

A Note About Food: and Pop Tarts (arguably also a food)

Central to every glacier expedition is the food. I learned long ago never to let undergrad or grad students plan and buy the food without close supervision (have you ever looked into a grad student's, or worse - undergrad student's - refrigerator? Don't). So I have taken on the role of food planning and purchasing for most of my recent expeditions, including this one.

The food needs change for every expedition. In Denali, we have to haul much of the food on our backs, so weight is a strong consideration. And in Denali, the lengths of our expeditions are difficult to predict due to weather, so it's hard to correctly plan food quantities. Here, we are hauling around 6,000 pounds of equipment by snow machine, so weight is NOT a concern. And we knew when our flights to and from Greenland were - we HAVE to make those flights - so we knew our duration.

So for my expedition food planning, I've developed a very detailed spreadsheet with every food item and the amount one needs per person-day, taking into consideration personal preference of group members. For example, we have 4 coffee connoisseurs on this expedition, and somehow need 4 separate coffee pots - I suppose just in case three of them break (can you tell that I'm not one of the 4?). As another example, some people like canned fish, others really don't. You get the idea.

We have 200 person-days on this expedition, and so I planned on about 275 person-days of food to allow us some flexibility of choice (again, since weight wasn't an issue). That comes to about $3,000 worth of food, which took three separate shopping trips to BJs, Hannafords and the Hanover COOP (in declining order of cost) to procure. So we are NOT going to run out of food. Although we ARE going to run out of CERTAIN foods.

Pop tarts come to mind.

The way I make the food shopping list is a few weeks before the trip, we have a conference call with everyone and we go down the list line by line: "OK breakfast. How many meals per week will each person want cereal (and which kind?)? Oatmeal? Cream of wheat? Granola? Pop tarts?..."

And here is the thing: if people don't speak up, then I can't do my job properly. Every year, with every expedition, the typical response on this phone call is: "I'm easy - I'll eat anything."

This is both incredibly unhelpful and a bold-faced lie. I understand that people are just trying to be accommodating, but it makes food planning very difficult.

The truth is even if someone WILL eat anything, everyone WANTS to eat some things more than others - i.e., we all have preferences. So if you have a group of 'easy' people, what inevitably happens is that everyone chooses their preferred food first, that food disappears, and everyone is stuck eating food they will tolerate but not really like.

This is the situation I'm always trying to avoid. Food is central to both good health and good morale. Anyone can eat anything for a few days or a week. But we're here for 6 weeks - we need good food to stay healthy and happy. I learned a lot about this from my friend, ice core drilling extraordinaire, field food gourmand, and arctic field expert Mike Wasczkiewicz.

So back to the Pop Tarts. When we got to Pop Tarts on the list during the phone call, the response was luke-warm at best. "Sure, I'll have one every now and then" seemed to be the common response. So I bought 50 person-meals of pop tarts, or 10 person-meals each, or one breakfast every 4 days per person. That comes to 100 packs of pop tarts with 2 per pack (so 4 individual tarts per person-breakfast).

Turns out that we are all closet pop tart addicts.

What happened was all-too predictable. As the pop tart supply started to dwindle, there was a rush on the remaining stock. There was some hoarding (I suspect), some hiding (I did bury a pack of 24 deep in the breakfast box - but only for the good of the whole team. I didn't tap into it.  I swear), and a lot of nervous mornings. Shifting eyes as our minds swirled with accusations: "Is he having ANOTHER pop tart? Didn't he have one yesterday? Wait, is he having one for LUNCH?!?!" And so on.

So what happened? How did this go so wrong with such a simple, delicious, food-like product?

My guess is that the problem comes down to a difference between what one eats in 'the field', and what one eats at home. I don't think I've ever eaten a pop tart at home. Honestly. But here, I can't get enough of them. And here's the odd thing - it's not like I'll eat them at home when I get back in a couple weeks. I will go back to never eating pop tarts - except in 'the field'. This is a phenomenon that my wife has noticed over the years. She'll hear about my trips, and our meals on those trips, and note: "you never eat that at home!"  I realize now that this is not unique to me.

So what is one to do? I think I need a multiplier for each item on my list to account for the field-food effect. Some foods will have a multiplier of <1. For example, Honey is a real pain-in-the-rear to deal with on a glacier because it doesn't flow. So maybe Honey has a multiplier of 0.25, meaning that one has 1/4 as much honey on a glacier as at home. (I note that we have not actually opened up a single honey jar yet - and we're on person-day 150. So maybe the multiplier should be 0.1). Peanut butter is similar - it's really hard to spread frozen peanut better; give it a multiplier of 0.4.  Other foods will have a multiplier >1, like pop tarts: maybe a multiplier of 2 or 2.5. That would be about right for this group.

Other things can also go wrong with the food. For example, we've managed to lose one of our two 5-lb bags of pancake mix. I usually cook pancakes and bacon for the group on storm-day mornings. It keeps morale up, and pancakes take a while, and we have time to kill on storm days. But not this morning. No more pancakes. I KNOW I bought 2 packs of mix. It's on the list, and I remember seeing two. But one has disappeared. Maybe someone is using it as a pillow? Maybe it got left and buried in the snow when we re-organized food boxes at Camp 2? Or maybe it's out there in a food box somewhere, and we just can't find it under all that peanut butter and honey. Who knows? But it was plain old granola for breakfast this morning. Such is the hard life on the glacier.
Bacon-wrapped sausages: An Ice-sheet Memorial Day special!

Monday, May 30, 2016

From Gabe at Core 6

All rigged and Snowmobiling For Science! Photo: Forrest McCarthy
I’m writing to you from the inside of my (somewhat odorous) tent at Core 6, nearly 400 km from our starting location at Raven/Dye 2. We’ve now drilled six of the seven proposed ice cores, collected a thousand miles of radar data, broken and fixed nearly everything that has an on/off switch and, unfortunately, eaten every single PopTart on the Greenland Ice Sheet. Although the weather has been a bit chilly this week with arctic air blowing from the north (morning temps around -14 F and daytime temps around 0 F), we’ve entered a new weather pattern and “warm” air is now blowing in from the south at 20-30 mph, so today we’re stuck in our tents reading, blogging, and Erich is watching “Pitch Perfect” for the fifth time this week. I wish I was joking.
Measuring Albedo with the spectrometer. Photo: Forrest McCarthy

During our camp move from Core 5 to Core 6 we set up a GoPro time-lapse as we deconstructed four personal tents, the kitchen and science tents, and the poop tent, packed up large sleds with all our gear, ratcheted down several 55 gallon fuel drums so that they won’t puncture, and padded our ice cores to move to the next cache. When we got to Core 6 we set it all up again, but we’re definitely getting faster as we can now erect everything in about 2 hours from arrival. We’ll eventually post this time lapse, but the connection says it would take 322 days to upload at the current connection speed.
Drilling at core 6. Photo: Forrest McCarthy
As Erich and I were drilling the ice core yesterday (we reached 28 meters before running out of non-broken aluminum extensions) we noticed that we’re directly under the commercial flight path from Europe to America, so if you find yourself crossing the Atlantic in the next week be sure to look down for several large yellow tents and a few gray tarps. We’re the only thing that isn’t snow a several hundred mile radius. Maybe we’ll even spell out the name of our favorite political candidate with snowmobile tracks!
Erich, geared up and ready to head out. Photo: Forrest McCarthy

We have four 2-stroke Polaris and one 4-stroke Skandic snowmobiles since we were told the 2-strokes are much easier to fix if something breaks out here. During our calculations and extensive research, we figured that the 2-strokes would get around 8 miles per gallon while hauling sleds and that they require an oil-to-gas ratio of 50:1. So we brought 17 gallons of snowmobile oil and cached 17 fuel drums along the route at a few strategic locations. What we failed to consider was that while surveying and towing heavy sleds, the snowmobiles use an oil-to-gas ratio of closer to 30:1, meaning that we have enough oil to get us to Core 7 and to within 100 miles of Summit, just shy of our final destination. We unsuccessfully searched the snowmobile manual for a way to premix the oil and gas before refueling, to lower the automatic oil injection rate, and even to use an oil substitute (we have lots of olive oil and bacon grease). We asked the snowmobile mechanics in Kangerlussuaq for help and even a few family members to do some research online for us, all to no avail. We have enough oil to get us 300 km, but it’s 400 km to Summit. What we really need is another miracle of Hanukkah. Unfortunately the National Science Foundation doesn’t believe in miracles and doesn’t want us to freeze to death so close to Summit (it would be bad publicity on their Annual Report), so they offered to air drop several gallons of oil at Core 7. Maybe they’ll even offer to bring pizza and beer when they come?
You get stiff after a long science drive... Photo: Forrest McCarthy

During the long spell of nice weather we’ve been working hard to collect as much data as possible and stay on track before the plane leaves from Summit on June 9 – with or without us. I managed to fix the laser during a storm day last week and it appears to still be working after driving it at pretty high speeds over large sastrugi. At the moment the GSSI, Flat Earth, FMCW, and multi-offset radars, various GPS receivers, laser, borehole thermometer, and albedo device are all working flawlessly, though I’m sure something will freeze or break in this windstorm. Two weeks ago Thomas and Tate cooked me a delicious birthday cake using pancake batter and cream of wheat with a scrumptious cheesecake frosting (the text reads “Love Green Tracs”). It was definitely the coldest birthday I’ve ever had but also one of the most exciting. 

Happy Birthday Gabe! Photo: Forrest McCarthy
We’ve had breakfast for dinner nights, made Hawaiian pizza with sugary pineapple chunks, pepperoni, and a pancake crust, we’ve perfected mixing Annie’s Mac & Cheese with Darn Good Chile, and even worked halfway through the 3 lb. bag of Sour Patch Kids. Everyone is quite looking forward to some non-dehydrated vegetables and being able to drink water without having to melt a bucket of snow first when we get back to Kangerlussuaq in just over a week. We definitely have enough food for the remaining journey to Summit, and now that we have all the oil we will need maybe I can convince Erich to let us finally snowmobile joust with some bamboo stakes or pieces of ice core. Until then we’ll keep completing our research objectives and driving north – towards Summit.

Tate, in full gear. Photo: Forrest McCarthy
Flying the Kite-Cam. Photo: Forrest McCarthy

Aerial view of camp from the Kite-Cam

Thursday, May 26, 2016

Quick updates from the field- text message at a time!

It seems the gang has been too busy to send me any pictures or extended text for the last few days, but I do get some status updates.  Here are some highlights from them!

From Erich:

"Update. Mon we camp moved to core 5. Tate and the surveyed w everything the whole way. Tues gabe and I drilled core 5 to 27.07m depth.Cold windy miserable day"

The team still got a lot done- with spiral radar surveys and using the kite-camera to survey for surface roughness.

 "Today (wed) was really crappy weather. Gabe & I did pit in the morning before it was too bad. No radar survey today but Tate & Thomas did pit reflector tests with Tate's radars"

The 'pit reflector tests' to which Erich refers are essentially ground-truthing tests- putting a metal reflector at a known depth in a pit and surveying with the radar to determine the radar wave velocity.   It looks like more bad weather will be arriving Thursday, so the team will try to go east if they can.

"Hope to move to core 6 camp on sat. Still planning on all 7 sites and summit. CPS said today that twin otter will leave a case of oil @ core 7 so that should solve the oil crisis."

The 'oil crisis' to which Erich refers is the fact that the 2-stroke oil-injection system has been injecting more oil into the engines than was budgeted- standard 2-stroke mix is 50 parts gasoline to 1 part oil, but the snowmachines themselves do the mixing and have been using more like 35:1 instead.  So the 2-stroke oil brought by the team will run out before they reach summit.  This is just as bad as running out of fuel, as without oil the engines will seize up and stop running entirely...

We're all hopeful that this resupply of oil goes smoothly, and that the weather improves!

Tuesday, May 17, 2016

Getting into production mode

We’re all finally starting to get in our rhythms up here, which took a bit longer than expected but everyone’s happy to have most of our logistics figured out. We moved 60 km north to Core 2 last Tuesday after the storm cleared and successfully drilled a 30 meter ice core (Erich’s personal record!), collected both east and west radar spurs, measured albedo at various locations near camp, flew a kite to get spectacular GoPro footage of the coring process (internet is too slow to upload videos, but we’ll post them once back to civilization) and aerial photographs to measure surface roughness. After a few different camp moves we’re getting quite speedy at packing up all the tents, science equipment, ice cores (making sure they’re packed so that they won’t break or melt during transport), and personal gear into sleds to tow behind the snow mobiles. The ratchet straps often freeze or get jammed with snow/ice, which makes tying everything down a more exciting challenge.
There's never a shortage of snow to dig on the ice sheet!

We’ve all been listening to music and books on tape while driving the snowmobiles. I just finished listening to The Martian, which was oddly fitting due to our shared experience. Both in the book and on the Greenland Ice Sheet one has to put on special boots, gloves, facemasks, and jackets to go outside, there is no water on the surface, the atmosphere is deathly cold, and any hope of rescue is far far away. Listening to the book made me appreciate having the others here with me and being able to leave after 5 weeks, not 5 years.
On Sunday we moved another 37 km north to Core 3 and began the practice of setting up camp all over again, we’re getting quite good at it now. Erich and I often race each other to put up personal tents and the latrine has turned into a multi-tiered palace: protected from the wind, with a view off into the distance, and even a shovel to hang your jacket on. It’s quite an enjoyable experience if you forget about the subzero temperatures. The coffee supply is slowly starting to dwindle, but fear not, we still have four coffee presses and over 20 lbs. of ground beans, so we should be able to stay caffeinated for the foreseeable future. Although we had cached fuel, propane, and empty ice core boxes here, we don’t reach our first food cache until Core 5, still a week or two away. Good thing I was deliriously tired when packing the cached food boxes and have no recollection of what I put in there (hopefully lots of chocolate and beer?).
Thomas, surrounded by coffee paraphernalia!  I count no fewer than 6 individual coffee-related items here- can you?

Low sun on the ice sheet from the tent.

Erich and I drilled a 28 m ice core during a very long day today, so we can pack up all that equipment and drive it forward to the next campsite. All day long the wind was howling and blowing snow on us, which the sunshine then began to melt, and everything was covered in a thin layer of ice when the water refroze in the shade. We built wind blocks out of tarps and coolers to protect the ice coring pit, but the spindrift ended up getting into every imperceptible small space (and down your shirt) no matter how many layers you wear. The wind is supposed to die down over the next few days so we’re hoping to get lots more data before the next storm rolls in. Since the storm last weekend temperatures have been extremely warm (mid 20’s during the day and above 0 F at night, which may not seem “warm” to you but remember that we’re standing on top of 8000 ft. of ice and above the Arctic Circle) so we don’t have to wear our giant parkas most of the time and can actually tie knots and tighten bolts with our bare hands, it really makes things easier.
All of the radar equipment is working flawlessly (though it still demands that we drive no faster than 6 mph to collect good data) but we haven’t gotten around to fixing the downward mounted laser yet, maybe we’ll look into that during the next storm.  For now we’re just trying to get as much done as possible and enjoy the great weather and fun company. That’s all for now,
The GreenTrACS Team
Fully loaded, traversing the flat white.

Monday, May 9, 2016


It’s a weather day up here on the Greenland Ice Sheet – winds blowing 25-45 mph and snow attempting to completely bury our tents if we stop digging them out, which is no small task with a large kitchen tent, science tent, poop tent, and five personal sleep tents. We spent most of yesterday afternoon tiding up camp so that we wouldn’t lose science equipment or, god forbid, our 50 lb. box of candy and hot chocolate underneath the snow. Amidst the blinding blizzard we packed a few sleds with ice coring equipment, extra fuel, and food for our next camp so that it wouldn’t blow away (as we were communicating with each other via a combination of sign language and muffled grunting, no small task while wearing mittens, balaclavas, goggles, Carhartt overalls, heavy boots, gigantic jackets, and numerous base layers). Thomas cooked a delicious dinner with rice, lentils, beans, and reindeer meat (which really tastes like Christmas!) and we celebrated the end of our first successful week on the ice sheet. We secured our tents with large bamboo stakes and parachute cord before crawling into them for a blissful night listening to the howling wind and snow.
The team assembled, ready to fly to Raven.
This morning Erich made us pancakes (and Tate cooked up a few of his special Butterfinger pancakes) with real Vermont maple syrup and a side of bacon. We sipped a few cups of coffee and listened to the BBC on our antiquated high frequency radio. Even high up on the Greenland Ice Sheet, 1000 miles from the nearest shower, we can’t escape hearing Donald Trump’s voice on the radio. Yay. We’re all spending the rest of the day backing up and analyzing science data, calling our moms (happy Mother’s Day!) and significant others, and reading/relaxing in our tents. Not a bad way to wait out the blizzard. If we can find the box of baby wipes buried in one of our boxes under the snow I might even get to “shower”, I’m sure everyone else would thank me after a week in the same pair of socks and underwear. No one wants to change underwear when it’s -30 degrees at night, despite the smell.
Erich drilling with the SideWinder system.
We’ve had a successful few days of science since our last blog post. Erich, Thomas, and Gabe drilled a 30 meter ice core (in 30-50 cm intervals) to analyze snow accumulation over the past few decades, Tate and Forrest performed a few radar surveys around camp, and a few of us alternated surveying 30 km east and 60 km west of camp with various pieces of not-yet-broken science equipment. Gabe took a few snow samples and measured albedo at the ends of both spurs, Thomas flew a kite with a camera to measure surface roughness around camp and got beautiful aerial photos of us, Tate fixed the stubborn 500 MHz radar, and Erich got near infrared photos of the ice core as we were collecting it.  During our drive back to camp yesterday we were in a complete whiteout (maybe 100 ft. visibility, at best) barreling across a desolate white ice sheet at 30 mph with very expensive equipment in tow. It’s a bit daunting to rely completely on the GPS to guide us back to camp, since there was no hope of retracing our tracks once the wind picked up, and even more jolting to hit large sastrugi without being able to see them coming.
Setting up radar on the sleds.
Hopefully we can use this storm as an opportunity to organize our food boxes, fix the broken downward looking laser and various cables that have snapped in the cold, and finally finish reading Cadillac Desert – which has put me to sleep every night this week. The storm is supposed to persist all day tomorrow but hopefully by Thursday morning we’ll be moving towards Camp 2 and collecting more data.
Sending our best from the middle of Greenland,
The GreenTrACS Team

Aerial view of camp, acquired with Thomas' kite-cam.

Friday, May 6, 2016

Update from the field team with Pics!

Bob here, posting text and photos from Gabe via iridium:

Greetings from the Greenland Ice Sheet! I'm writing this from inside an Arctic Oven tent on an internet connection that has about the same speed as a circa 1985 Macintosh computer - aka not very fast. We can only upload incredibly small image file sizes so sorry about the quality, but it's working!

Everything is going well up on the ice sheet. We spent three nights at Raven/Dye 2 where we were dropped off by a large plane with all our equipment. We had several rounds of testing equipment and trying to optimize data collection while we could still have equipment flown in on the Air National Guard training flights. We ended up spending lots of time setting up the different radar systems and testing them on the ice (which was very different than testing everything out in Idaho).

On the third day, Erich, Forrest, and Gabe drove four 55-gallon drums of fuel and all the ice core equipment to the location of the first core (about 30 km north of Raven/Dye 2). Although we were driving slower than your grandmother, all the wind blown bumps of snow on the surface (called Sastrugi) bounced the sleds around so much that we punctured small holes in 3 of the 4 fuel barrels, nothing a little bubble gum and precarious perching of the barrels at camp couldn't fix. These same Sastrugi were responsible for the death of the downward looking laser system (sorry Bob!) and we accidentally plugged the first FMCW (frequency modulated continuous wave) radar into the battery the wrong way - oops.

We finally drove everything to the first core site (at a whopping 5 mph so that the radar can collect quality data) over two days while Erich and Gabe set up the kitchen and science Arctic Oven tents, the personal sleep tents, and started digging a 4 ft snow pit to do some science. Gabe collected albedo (how bright/shiny the snow is) measurements, Tate has mastered the 500 MHz multi-offset radar system and Frequency Modulated Continuous Waveform (big scary science words!), Thomas is back in Greenland for another round with the GSSI radar, Erich has happily collected the first 20 m of his ice core here at Core 1, and Forrest is happy to listen to the British Brodcasting New Zealand on his High Frequency radio while he's falling to sleep.

Temperatures have been fluctuating between -30 and -15 C (which is pretty darn cold when you're sleeping in a tent) so everything is pretty slow going with multiple layers of gloves, jackets, Carhartt pants and our endless supply of toe warmers.

That's all for now! Hoping to check back in this weekend while we're all sitting inside the tents as a big storm blows through.

- The GreenTrACS Team

Forrest setting up a radar system in front of the personal tents

Thomas staring off into the sunset at 11 pm after a long day of radar

Forrest practicing his refueling skills while Erich dances to some music

The C-130 plane after dropping us off at Raven/Dye 2 (an old missle tracking system to stop the Russians from bombing us) in the background

Quick update- Science progress!

Hi All--
  A few quick science updates from Erich in the field:

They has a great day yesterday, drilling to 20 meters smoothly, and running radar out to 30 km to the east of camp 1.  They also ran the FMCW and multi-offset radars in a pattern around the core site, to characterize the site.  At the farthest point east, they measured albedo and density in a shallow pit, and returned following a Operation IceBridge flight line (different from the one they followed on the way out).

Today, they plan to deepen the core to 30 meters, and run all of the radars to the west (as I type I see they are close to 30 km to the west). 

Erich's closing message sums up how the team feels a few days into the traverse, having worked out some of the kinks of traveling with thousands of pounds of gear and trying to collect data with delicate instruments:
 "Feel like we have our feet under us."

Well said.   Stay tuned- keep an eye on the breadcrumb trackers to watch where our team goes!

Monday, May 2, 2016

2 May 2016- second day on ice!

Just off the satellite phone with Erich from Raven, where the team was inserted with a LC-130 Hercules Saturday.  After setting up a temporary camp, part of the team took a shakedown run up to the first core site yesterday, getting a feel for the conditions and how the sleds pulled.  They brought about 3/4 of the cargo to the first core site, and then returned to Raven.  All in all a good shakedown. 

Still getting instruments up and running, but Erich reported the laser surface profiler and GPS units are working, and configuration of the radars are underway. 

All are in good spirits and ready to head to core site 1 tomorrow!  Stay tuned to the breadcrumb tracker to watch their progress.