I grew up in the mountains in Colorado and I member all these winters -
that we spent chopping wood and surviving in the winter time.
I fell in love with the snow.
And I wanted to bring that in to my professional life.
I am a climatologist who grew into a glaciologist -
the person who studies snow and ice because my entry to this world was through skiing.
So now it is all about understanding climate,
because it boils down to relatively simple physics here.
It is the amount of snow fall on one side of the equation,
and on the other side it is how much melt there is.
The Greenland ice sheet is a left over from the last ice age -
– so it is like a sleeping giant.
And this warming is waking it up again.
We go to Greenland because it is a ground zero for climate change.
And there all we have to do is get some hard numbers in the field -
to check the models and the satellite measurements.
We are bringing low-tech methods to check the high-tech information.
Greenland is important in understanding climate change because -
right now it is delivering the most to sea level rise -
than any glaciated place in the world, including Antarctica.
Global warming has put more moisture in the atmosphere -
and we can see that with more snow fall in Greenland.
So that is competing against the increase in melt.
The Greenland ice sheet is losing so much ice.
It is about 8000 cubic meters per second -
round the clock.
You can see what is under the snow here.
It is a climate station and it is recording -
how much melt there is.
It measures sun light intensity with this sensor here,
wind speed, air-temperature, humidity etc.
The way we measure snow fall on Greenland is very simple.
We measure the thickness, and we weigh how much snow there is.
What we do is that we drill down to the last summer,
and we take that snow out and weigh it.
How much water came out of the sky.
And this low-tech measurement,
we use to check the high-tech satellites and climate models.
One strong impression you get -
working in this environment is just how quiet it can be.
And just how alone you can feel.
We live in a busy world -
lots of people and noise - so it is like a getaway.
Ok guys, I just got off the phone with the office.
The weather outlook is really terrible.
We can already see these high clouds coming in.
Mid day we should have light precipitation.
Warmer temperatures also threaten the safety of this traverse.
And we had rush of the ice sheet because there is a lot of rain fall coming,
and it would have cut through the snow and made it really unsafe to ski across.
So even though we planned for 9 days of camping, we ended up only having 4.
The reason we have to go to Greenland is -
that there is no other way to get these measurements -
than to go there on the ground and drill the snow.
This way we can evaluate which is winning this competition -
between increase of melting or increase of snow fall.
What we find is that melt is winning and the implications are,
more sea level rise, more changes in the ocean circulation -
and disruption of the climate system.
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