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Ammonium
3
Calcium
3
Magnesium
3
Methane sulfonic acid
Nitrate
3
Potassium
3
Sampling/drilling ice
3
ALTITUDE
2
Aerological investigations
2
DATE/TIME
2
Date/time end
2
Date/time start
2
GISP
2
Greenland Ice Core Projects GRIP/GISP/NGRIP
2
Ion chromatography
2
Sodium
2
Sulfate
2
AERO
1
AGE
1
ATM
1
Acetate
1
Acetate, standard deviation
1
Ammonium, standard deviation
1
Calcium, standard deviation
1
Calculated
1
Calculated De Angelis et al, 1997
1
Chloride
1
Chloride/Sodium ratio
1
Chlorine, standard deviation
1
DEPTH, ice/snow
1
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