Observation Sites

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Surface Flasks
Airborne Flasks
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Surface In Situ

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Carbon Cycle Gases

157 sites in 48 countries

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Code Name Country Latitude Longitude Elevation (meters) Time from GMT Project
AAO* Airborne Aerosol Observatory, Bondville, Illinois United States 40.050 -88.370 230.0 -6 hours Airborne Flasks*
ABP* Arembepe, Bahia Brazil -12.770 -38.170 1.0 -3 hours Surface Flasks*
ACG Alaska Coast Guard United States 57.737 -152.504 6.0 -8 hours Airborne Flasks
ALT Alert, Nunavut Canada 82.451 -62.507 185.0 -5 hours Surface Flasks
AMS* Amsterdam Island France -37.798 77.538 55.0 +5 hours Surface Flasks*
AMT Argyle, Maine United States 45.035 -68.682 52.4 -5 hours In Situ Tall Tower
Surface Flasks
AMY Anmyeon-do Republic of Korea 36.539 126.329 47.0 +9 hours Surface Flasks
ASC Ascension Island United Kingdom -7.967 -14.400 85.0 -1 hours Surface Flasks
ASK Assekrem Algeria 23.262 5.632 2710.0 +1 hours Surface Flasks
AVI* St. Croix, Virgin Islands United States 17.750 -64.750 3.0 -4 hours Surface Flasks*
AZR Terceira Island, Azores Portugal 38.766 -27.375 19.0 -1 hours Surface Flasks
BAL* Baltic Sea Poland 55.350 17.220 3.0 +1 hours Surface Flasks*
BAO* Boulder Atmospheric Observatory, Colorado United States 40.050 -105.004 1578.7 -7 hours In Situ Tall Tower*
Airborne Flasks*
Surface Flasks*
BGI* Bradgate, Iowa United States 42.820 -94.410 355.1 -6 hours Airborne Flasks*
BHD Baring Head Station New Zealand -41.408 174.871 85.0 +12 hours Surface Flasks
BKT Bukit Kototabang Indonesia -0.202 100.318 845.0 +7 hours Surface Flasks
BME* St. Davids Head, Bermuda United Kingdom 32.368 -64.648 12.0 -4 hours Surface Flasks*
BMW Tudor Hill, Bermuda United Kingdom 32.265 -64.879 30.0 -4 hours Surface Flasks
BNE* Beaver Crossing, Nebraska United States 40.800 -97.180 465.9 -6 hours Airborne Flasks*
BRW Barrow Atmospheric Baseline Observatory United States 71.323 -156.611 11.0 -9 hours In Situ Observatory
Surface Flasks
BSC* Black Sea, Constanta Romania 44.178 28.665 0.0 +2 hours Surface Flasks*
BWD Brentwood, Maryland United States 38.934 -76.956 16.8 -5 hours Surface Flasks
CAO Colorado Atmospheric Observatory USA 39.923 -103.972 1508.2 -7 hours In Situ Tall Tower
Surface Flasks
CAR Briggsdale, Colorado United States 40.635 -104.327 1488.0 -7 hours Airborne Flasks
CBA Cold Bay, Alaska United States 55.210 -162.720 21.3 -9 hours Surface Flasks
CGO Cape Grim, Tasmania Australia -40.683 144.690 94.0 +10 hours Surface Flasks
CHR Christmas Island Republic of Kiribati 1.700 -157.152 0.0 -10 hours Surface Flasks
CHS* Cherskii Russia 68.513 161.531 30.0 +11 hours Surface In Situ*
CIB Centro de Investigacion de la Baja Atmosfera (CIBA) Spain 41.810 -4.930 845.0 +1 hours Surface Flasks
CMA Offshore Cape May, New Jersey United States 38.830 -74.320 0.0 -5 hours Airborne Flasks
CMO* Cape Meares, Oregon United States 45.478 -123.969 30.0 -8 hours Surface Flasks*
COS* Cosmos Peru -12.120 -75.330 4600.0 -5 hours Surface Flasks*
CPT Cape Point South Africa -34.352 18.489 230.0 +2 hours Surface Flasks
CRV Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) United States 64.986 -147.598 611.4 -8 hours In Situ Tall Tower
Airborne Flasks
Surface Flasks
CRZ Crozet Island France -46.434 51.848 197.0 +5 hours Surface Flasks
DND* Dahlen, North Dakota United States 47.500 -99.240 472.4 -6 hours Airborne Flasks*
DRP Drake Passage N/A -59.000 -64.690 0.0 -4 hours Surface Flasks
DSI Dongsha Island Taiwan 20.699 116.730 3.0 +8 hours Surface Flasks
EIC Easter Island Chile -27.160 -109.428 47.0 -7 hours Surface Flasks
ESP Estevan Point, British Columbia Canada 49.383 -126.544 7.0 -8 hours Airborne Flasks
ETL East Trout Lake, Saskatchewan Canada 54.354 -104.987 493.0 -6 hours Airborne Flasks
FLK* Falkland Islands United Kingdom -51.700 -57.870 51.0 -5 hours Surface Flasks*
FTL* Fortaleza Brazil -3.520 -38.280 3.0 -3 hours Airborne Flasks*
FWI* Fairchild, Wisconsin United States 44.660 -90.960 334.3 -6 hours Airborne Flasks*
GMI Mariana Islands Guam 13.386 144.656 0.0 +10 hours Surface Flasks
GOZ* Dwejra Point, Gozo Malta 36.048 14.889 1.0 +1 hours Surface Flasks*
HAA* Molokai Island, Hawaii United States 21.230 -158.950 3.0 -10 hours Airborne Flasks*
HBA Halley Station, Antarctica United Kingdom -75.550 -25.630 30.0 -3 hours Surface Flasks
HFM Harvard Forest, Massachusetts United States 42.538 -72.171 340.0 -5 hours Airborne Flasks*
Surface Flasks
HIL Homer, Illinois United States 40.070 -87.910 201.5 -6 hours Airborne Flasks
HPB Hohenpeissenberg Germany 47.801 11.024 985.0 +1 hours Surface Flasks
HSU* Humboldt State University United States 41.059 -124.750 0.0 -8 hours Surface Flasks*
HUN Hegyhatsal Hungary 46.956 16.652 248.0 +1 hours Surface Flasks
ICE Storhofdi, Vestmannaeyjar Iceland 63.400 -20.288 118.0 +0 hours Surface Flasks
INX INFLUX (Indianapolis Flux Experiment) United States 39.581 -86.421 -5 hours Airborne Flasks*
Surface Flasks
ITN* Grifton, North Carolina United States 35.365 -77.393 8.0 -5 hours In Situ Tall Tower*
Surface Flasks*
IZO Izana, Tenerife, Canary Islands Spain 28.309 -16.499 2372.9 +0 hours Surface Flasks
KCO* Kaashidhoo Republic of Maldives 4.970 73.470 1.0 +5 hours Surface Flasks*
KEY Key Biscayne, Florida United States 25.665 -80.158 1.0 -5 hours Surface Flasks
KPA* Kitt Peak, Arizona United States 32.000 -112.000 2083.0 -7 hours Surface Flasks*
KUM Cape Kumukahi, Hawaii United States 19.561 -154.888 8.0 -10 hours Surface Flasks
KZD* Sary Taukum Kazakhstan 44.084 76.871 595.0 +6 hours Surface Flasks*
KZM* Plateau Assy Kazakhstan 43.250 77.880 2519.0 +6 hours Surface Flasks*
LAC* LA Megacities United States 34.000 -118.200 100.0 -8 hours Surface Flasks*
LEF Park Falls, Wisconsin United States 45.945 -90.273 472.0 -6 hours In Situ Tall Tower
Airborne Flasks
Surface Flasks
LEW Lewisburg, Pennsylvania United States 40.945 -76.879 166.0 -5 hours Surface Flasks
LLB* Lac La Biche, Alberta Canada 54.954 -112.467 540.0 -7 hours Surface Flasks*
LLN Lulin Taiwan 23.470 120.870 2862.0 +8 hours Surface Flasks
LMP Lampedusa Italy 35.518 12.632 45.0 +1 hours Surface Flasks
MBC* Mould Bay, Northwest Territories Canada 76.247 -119.353 30.0 -10 hours Surface Flasks*
MBO Mt. Bachelor Observatory United States 43.977 -121.686 2731.0 -8 hours Surface In Situ
Surface Flasks
MCM* McMurdo Station, Antarctica United States -77.830 166.600 11.0 +12 hours Surface Flasks*
MEX High Altitude Global Climate Observation Center Mexico 18.984 -97.311 4464.0 -6 hours Surface Flasks
MHD Mace Head, County Galway Ireland 53.326 -9.899 5.0 +0 hours Surface Flasks
MID Sand Island, Midway United States 28.219 -177.368 4.6 -11 hours Surface Flasks
MKN* Mt. Kenya Kenya -0.062 37.297 3644.0 +3 hours Surface Flasks*
MKO Mauna Kea, Hawaii United States 19.823 -155.469 4199.0 -10 hours In Situ Observatory
Surface Flasks
MLF* Mauna Loa, Hawaii United States 19.530 -155.580 3397.0 -10 hours Surface Flasks*
MLO Mauna Loa, Hawaii United States 19.536 -155.576 3397.0 -10 hours In Situ Observatory
Surface Flasks
MRC Marcellus Pennsylvania United States 41.466 -76.419 592.0 -5 hours Airborne Flasks
Surface Flasks
MSH Mashpee, Massachusetts United States 41.657 -70.498 32.0 -5 hours Surface Flasks
MVY* Marthas Vineyard, Massachusetts United States 41.325 -70.567 0.0 -5 hours Surface Flasks*
MWO Mt. Wilson Observatory United States 34.225 -118.059 1729.3 -8 hours Surface Flasks
NAT* Farol De Mae Luiza Lighthouse Brazil -5.795 -35.185 50.0 -3 hours Surface Flasks*
NEB NE Baltimore, Maryland United States 39.315 -76.583 44.0 -5 hours Surface Flasks
NHA Offshore Portsmouth, New Hampshire (Isles of Shoals) United States 42.950 -70.630 0.0 -5 hours Airborne Flasks
NMB Gobabeb Namibia -23.580 15.030 456.0 +1 hours Surface Flasks
NWB NW Baltimore United States 39.344 -76.685 135.0 -5 hours Surface Flasks
NWF* Niwot Ridge Forest, Colorado United States 40.030 -105.550 3050.0 -7 hours Surface Flasks*
NWR Niwot Ridge, Colorado United States 40.053 -105.586 3523.0 -7 hours Airborne Flasks
Surface Flasks
NZL* Kaitorete Spit New Zealand -43.830 172.630 3.0 +12 hours Surface Flasks*
OIL* Oglesby, Illinois United States 41.280 -88.940 192.6 -6 hours Airborne Flasks*
OPW* Olympic Peninsula, Washington United States 48.300 -124.628 486.0 -8 hours Surface Flasks*
OXK Ochsenkopf Germany 50.030 11.808 1022.0 +1 hours Surface Flasks
PAL Pallas-Sammaltunturi, GAW Station Finland 67.973 24.116 565.0 +2 hours Surface Flasks
PCO* Pico, Azores Portugal 38.470 -28.400 2225.0 -1 hours Surface Flasks*
PFA Poker Flat, Alaska United States 64.900 -148.760 210.0 -9 hours Airborne Flasks
PSA Palmer Station, Antarctica United States -64.774 -64.053 10.0 -3 hours Surface Flasks
PSM* Point Six Mountain, Montana United States 47.030 -113.980 2462.0 -7 hours Surface Flasks*
PTA* Point Arena, California United States 38.955 -123.741 17.0 -8 hours Surface Flasks*
RPB Ragged Point Barbados 13.165 -59.432 15.0 -4 hours Surface Flasks
RTA Rarotonga Cook Islands -21.250 -159.830 3.0 -10 hours Airborne Flasks
SAN* Santarem Brazil -2.850 -54.950 78.0 -4 hours Airborne Flasks*
SCA Offshore Charleston, South Carolina United States 32.770 -79.550 0.0 -5 hours Airborne Flasks
SCSN03* South China Sea (3 N) N/A 3.000 105.000 15.0 Surface Flasks*
SCSN06* South China Sea (6 N) N/A 6.000 107.000 15.0 Surface Flasks*
SCSN09* South China Sea (9 N) N/A 9.000 109.000 15.0 Surface Flasks*
SCSN12* South China Sea (12 N) N/A 12.000 111.000 15.0 Surface Flasks*
SCSN15* South China Sea (15 N) N/A 15.000 113.000 15.0 Surface Flasks*
SCSN18* South China Sea (18 N) N/A 18.000 113.500 15.0 Surface Flasks*
SCSN21* South China Sea (21 N) N/A 21.000 114.000 15.0 Surface Flasks*
SCT Beech Island, South Carolina United States 33.406 -81.833 115.2 -5 hours In Situ Tall Tower
Surface Flasks
SDZ* Shangdianzi China 40.650 117.117 293.0 +8 hours Surface Flasks*
SEY Mahe Island Seychelles -4.682 55.532 2.0 +4 hours Surface Flasks
SGI* Bird Island, South Georgia United Kingdom -54.000 -38.050 30.0 -3 hours Surface Flasks*
SGP Southern Great Plains, Oklahoma United States 36.607 -97.489 314.0 -6 hours Airborne Flasks
Surface Flasks
SHM Shemya Island, Alaska United States 52.711 174.126 23.0 -10 hours Surface Flasks
SIO* La Jolla, California United States 32.830 -117.270 14.0 -8 hours Surface Flasks*
SMO Tutuila American Samoa -14.247 -170.564 42.0 -11 hours In Situ Observatory
Surface Flasks
SNP Shenandoah National Park United States 38.617 -78.350 1008.0 -5 hours Surface In Situ
SPO South Pole, Antarctica United States -89.980 -24.800 2810.0 +12 hours In Situ Observatory
Surface Flasks
STC* Ocean Station Charlie United States 54.000 -35.000 6.0 Surface Flasks*
STM* Ocean Station M Norway 66.000 2.000 0.0 +0 hours Surface Flasks*
STR Sutro Tower, San Francisco, California United States 37.755 -122.453 254.0 -8 hours Surface Flasks
SUM Summit Greenland 72.596 -38.422 3209.5 -2 hours Surface Flasks
SYO Syowa Station, Antarctica Japan -69.013 39.590 14.0 +3 hours Surface Flasks
TAC* Tacolneston United Kingdom 52.518 1.139 56.0 +0 hours Surface Flasks*
TAP Tae-ahn Peninsula Republic of Korea 36.738 126.133 16.0 +9 hours Surface Flasks
TBP Tambopata Peru -12.820 -69.292 200.0 -5 hours Surface In Situ
TGC Offshore Corpus Christi, Texas United States 27.730 -96.860 0.0 -6 hours Airborne Flasks
THD Trinidad Head, California United States 41.054 -124.151 107.0 -8 hours Airborne Flasks
Surface Flasks*
TIK* Hydrometeorological Observatory of Tiksi Russia 71.597 128.889 19.0 +9 hours Surface Flasks*
TMD Thurmont, Maryland United States 39.577 -77.488 561.0 -5 hours Surface Flasks
TPI Taiping Island Taiwan 10.379 114.371 4.0 +8 hours Surface Flasks
ULB* Ulaanbaatar Mongolia 47.400 106.000 1350.0 +8 hours Airborne Flasks*
USH Ushuaia Argentina -54.848 -68.311 12.0 -3 hours Surface Flasks
UTA Wendover, Utah United States 39.902 -113.718 1327.0 -7 hours Surface Flasks
UUM Ulaan Uul Mongolia 44.452 111.096 1007.0 +8 hours Surface Flasks
WBI West Branch, Iowa United States 41.725 -91.353 241.7 -6 hours In Situ Tall Tower
Airborne Flasks
Surface Flasks
WGC Walnut Grove, California United States 38.264 -121.490 2.0 -8 hours In Situ Tall Tower
Airborne Flasks*
Surface Flasks
WIS Weizmann Institute of Science at the Arava Institute, Ketura Israel 29.965 35.060 151.0 +2 hours Surface Flasks
WKT Moody, Texas United States 31.315 -97.327 251.0 -6 hours In Situ Tall Tower
Surface Flasks
WLG Mt. Waliguan Peoples Republic of China 36.288 100.896 3810.0 +8 hours Surface Flasks
WPCN00* Western Pacific Cruise (0 N) N/A 0.000 151.100 0.0 Surface Flasks*
WPCN05* Western Pacific Cruise (5 N) N/A 5.000 149.100 0.0 Surface Flasks*
WPCN10* Western Pacific Cruise (10 N) N/A 10.000 148.000 0.0 Surface Flasks*
WPCN15* Western Pacific Cruise (15 N) N/A 15.000 145.000 0.0 Surface Flasks*
WPCN20* Western Pacific Cruise (20 N) N/A 20.000 142.000 0.0 Surface Flasks*
WPCN25* Western Pacific Cruise (25 N) N/A 25.000 140.000 0.0 Surface Flasks*
WPCN30* Western Pacific Cruise (30 N) N/A 30.000 136.800 0.0 Surface Flasks*
WPCS05* Western Pacific Cruise (5 S) N/A -5.000 153.700 0.0 Surface Flasks*
WPCS10* Western Pacific Cruise (10 S) N/A -10.000 156.800 0.0 Surface Flasks*
WPCS15* Western Pacific Cruise (15 S) N/A -15.000 159.300 0.0 Surface Flasks*
WPCS20* Western Pacific Cruise (20 S) N/A -20.000 161.100 0.0 Surface Flasks*
WPCS25* Western Pacific Cruise (25 S) N/A -25.000 165.500 0.0 Surface Flasks*
WPCS30* Western Pacific Cruise (30 S) N/A -30.000 168.000 0.0 Surface Flasks*
ZEP Ny-Alesund, Svalbard Norway and Sweden 78.907 11.888 474.0 +1 hours Surface Flasks
* - Indicates discontinued site or project