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L. P. Steele
20
P. B. Krummel
17
R. J. Langenfelds
16
P. D. Jones
9
D. W. S. Limbert
6
J. E. Hansen
5
K. Lo
5
M. Sato
5
R. Ruedy
5
A. Neftel
4
B. Stauffer
4
E. Moor
4
H. Friedli
4
H. Lotscher
4
H. Oeschger
4
R. L. Langenfelds
4
U. Siegenthaler
4
B. S. G. Cherry
3
B. Santer
3
C. M. Goodess
3
Claudio Rafanelli
3
D. M. Etheridge
3
H. F. Diaz
3
Horacio Rodriguez
3
J. Jouzel
3
Jorge Araujo
3
Luigi Ciattaglia
3
P. M. Kelly
3
R. J. Francey
3
R. S. Bradley
3
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Annual Average
13
meteorological stations
11
May
10
Month
10
Year
10
Antarctica
9
TRENDS-OTHER ATMOSPHERIC TRACE GASES
9
gas chromatography
9
Antarctic
8
April
7
August
7
December
7
February
7
January
7
July
7
June
7
March
7
November
7
October
7
September
7
TRENDS-CO2
7
Year (1992 - 2001)
7
atmospheric CO2 concentrations
7
ALTNUM
6
ALTUNT
6
Antarctic region
6
Antarctic station data
6
CH4
6
FYEAR
6
IYEAR
6
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