Wednesday, February 18, 2009

Day 3

Weather for today calls for a very nice and sunny -20 C. I must make sure to take my sunscreen.

Today we are getting in to the real stuff, although the whole thing is starting to feel a little like the book Holes. The only thing missing is Warden Walker with poisonous nail polish to keep us in line.

We are digging at two different sites with substantially more snow. The first is a Polygonal Peat Plateau, which is a land formation that forms around wedges of permafrost, and at a Tree Island, which is not really an island but rather a bunch of trees in the open tundra. The Tree Island snow depth should be about 5 feet deep. Getting a 5 foot snow core sample will be tricky since we are working with 5 foot coring tubes. That means digging to the bottom each time to make sure we got the full depth. We do 2 or 3 pits per site and 11 core samples per pit, so that means 22 or 33 times digging down to the bottom. This whole thing makes my worst day at MMT lke a piece of cake.
I inserted a picture of all the "tools of the trade" that we use: thermometers to measure temperature at every five cm of snow, pressure gages to measure density, scales for weight, measuring tape, clipboard, coring tubes,...
The reason for digging at different sites is that the snow drift, accumulation and crystal types differ greatly on location. It really is quite funny (interesting funny, not haha funny, that is) how two day into the work, we are all talking about the differences between III-A-3 snow and Pukak snow as if we have been doing this type of work for years and actually know what we are doing.
For each pit we dig, we collect three snow samples to bring back to the study center. Once we are there we measure for Ph and conductivity. The purpose is all rather complex, but in a nut shell, conductivity increases with salt content and they are trying to figure out if climate change is impacting the salt being blown onto the land before Hudson Bay freezes over. All rather complex, but I guess they know what they are doing. They are scientists after all.

If you want to get a sense of what all this data is used for, take a look at this paper written by the director of this expedition, Pete. It gives you an idea of how climate change is measured and how digging holes in the snow really is a useful endeavor.
No Northern lights yet. We keep going out at night hoping to catch a good view, but so far without any luck. Tomorrow a "northern lights" specialist is arriving here who is willing to wake us up in the middle of the night if they appear. I certainly hope to catch some before I return to balmy New York

11 Comments:

At February 19, 2009 10:15 AM , Anonymous Anonymous said...

What are the northern lights?

 
At February 19, 2009 10:15 AM , Anonymous Anonymous said...

Dr Cornelis:
What IS a snow core sample?
What does it do?

 
At February 19, 2009 10:15 AM , Anonymous Anonymous said...

Hi Dr. Cornelis!
It sounds like you are having a great time! You said you had to measure the temperature of the snow every 5 cm. I was wondering how long it takes you to take a 5 foot core sample if you have to collect all this information along the way?
I hope your having fun!
Maddy M
p.s can you bring us back a polar bear???

 
At February 19, 2009 10:16 AM , Anonymous Anonymous said...

How long does it take you to dig every hole if you have to dig 22-33 of them? Do you dig all of those in just one day?
Isabel Telonis, Class VIII

 
At February 19, 2009 10:16 AM , Anonymous Anonymous said...

Hi Dr. Cornelis,
The pictures are great, and it seems like you are having a good time in Canada. I can not wait to see more pictures, and to read more about your time there.
Anonymous

 
At February 19, 2009 11:24 AM , Anonymous Anonymous said...

Hi Dr. Cornelis,
I read your first article, and your last one as well and I remember reading that you were having trouble getting warm things to wear for the freezing cold (-30 degrees F). Are you cold? Did you pack the right stuff? Is it hard to dig into the snow? It seems that you are getting very involved, and you already know the differences between different types of snow in different places. Hope your having fun!

 
At February 19, 2009 11:32 AM , Anonymous Anonymous said...

If anyone is interested in finding out the temperature where Dr. Cornelis is in fahrenheit, you can try this link to a converter:
http://www.wbuf.noaa.gov/tempfc.htm

 
At February 19, 2009 1:42 PM , Anonymous Anonymous said...

Stefan,
Thanks for the Skype conversation. Could you possibly tell the students a little about the Northern Lights / Aurora Borealis which you are hoping to see while you are there.
Thanks, ME

 
At February 20, 2009 8:37 AM , Anonymous Anonymous said...

It was great seeing you on Skype and listening to your reactions to your extraordinary experience. I hope we can schedule one more next week so more students can share the excitement. Have you been able to connect with the school in Australia?
SusanJ

 
At February 20, 2009 8:58 AM , Anonymous Anonymous said...

Hello Stefan,
It was great seeing/speaking with you yesterday. Skype is a miracle!
I have two more questions: how many hours of daylight do you have? How do the people who live there all year around make a living?
Take care and stay warm! BL-S

 
At February 23, 2009 7:53 PM , Anonymous anonymous said...

Hi Dr. Cornelis,
From the picture above, it seems like there is very little surrounding the area in which you are staying. How long is the stretch of snow/ice you are researching?
Anonymous

 

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