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> Climate Change and Atmosphere: Greenland Ice Sheet

Control Results (Step 2)

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Description: From May 26 journal entry:

http://www.arcus.org/TREC/VBC/index.php?showtopic=1689

Gayle Hagler collectin...

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Description: Gayle is collecting hourly snow samples. The snow will be melted. Then, the water will be put through a machine to analyze the total organic carbon in the snow sample.

Glittering Gemstones i...

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Description: Sunlight reflecting off snow crystals on the ground creates this winter wonderland scene every day here at Summit, Greenland.

Diamond Dust

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Description: Diamond dust, or small glittering white, gold, green, and purple snow crystals, is hard to photograph. If you look closely at the upper left hand corner, you might be able to see two white specks. Diamond dust falls on cloudless days.

Gayle Hagler setting u...

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Description: Lap top computer is at the top of the rack. The LASAIR machine is in the center and the PSAP machine is at the bottom. Each machine is connected to hoses that collect air samples from outside.

Mike Bergin Adjusting ...

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Description: Mike is putting the final touches on the wind vane and anemometer. If the wind shifts and starts to blow from the camp, the wind vane will move and turn off our air samplers.

Gayle Hagler and Hi Vo...

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Description: Gayle is standing behind the Hi Vol Sampler. It is like a giant vacuum cleaner, sucking in 99 liters of air per minute and trapping particles in its filter.

GRIP Field Trip - Food...

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Description: Food left behind at the Greenland Ice Core Project (GRIP) main building. Can you see the Kellogg's corn flakes?

GRIP Field Trip - Bore...

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Description: Here is Mr. Mcmahon next to the bore casing for the former ice core drill from the Greenland Ice Core Project.

Flags marking site of ...

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Description: These flags mark the site of the former GRIP facility.

Hole into GRIP facility

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Description: Here is the hole to enter the GRIP facility

GRIP Field Trip - Mr. ...

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Description: Mr. McMahon is in the former GRIP (Greenland Ice Core Project) main building. Notice the frost on his eyelashes. It is -48 degrees Celsius in the main building.

GRIP Field Trip - News...

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Description: This newspaper was abandoned in the GRIP main building, Summit, Greenland.

Sixth Grade Experiment...

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Description: Mr. McMahon is spraying dark particles onto the snow to simulate air pollution particles.

Sixth Grade Experiment...

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Description: Can you see what sensor is looking at dirty snow?

Sixth Grade Experiment...

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Description: Here are our two light sensors in the snow.

Big House Through the Fog

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Description: This photo shows the Big House at Summit, Greenland, through the fog. The photo was taken at 11:30 p.m.

Kevin and Gayle in Sum...

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Description: Kevin and Gayle are in the Green House talking with 6th graders from Decatur, Georgia.

Rime, Summit, Greenland

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Description: Rime is made of very delicate crystals of ice that look like spikes, needles, or feathers. Rime is formed during fogs when supercooled or near-freezing water droplets in the air come in contact with surfaces that are below freezing.

Mr. McMahon adjusting ...

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Uploaded by: Kevin_McMahon

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Description: We just finished setting up the "low vol" instrument and I am adjusting it so that the tube is pointing straight up. Thank you, Summit staff, for building the box for us.



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