Table 1. Sampling stations in the Scripps O2/N2 network (After Keeling et al., [1998]).

 

Station code

Location

Position

Elevation (m)

Time period

ALT

Alert, Northwest Territories

8227N

6231W

210

Apr. 1991 to May 1996

CBA

Cold Bay,

Alaska

5512N

16243W

25

Aug. 1995 to Jul. 1996

NWR

Niwot Ridge,

Colorado

40 3N

10538W

3749

Apr. 1991 to Jan. 1993

LJO

La Jolla,

California

3252N

11715W

20

May 1989 to Jun. 1996

KUM

Kumukahi,

Hawaii

1931N

15449W

40

Jun. 1993 to Jul. 1996

MLO

Mauna Loa,

Hawaii

1932N

15535W

3397

Aug. 1993 to Jul. 1996

SMO

Cape Matatula,

U.S. Samoa

1415S

17034W

42

Jun. 1993 to Jul. 1996

CGO

Cape Grim,

Tasmania

4041S

14441E

94

Jan. 1991 to Jul. 1996

SPO

South Pole

8959S

2448W

2810

Nov. 1991 to Feb. 1996