Observation Sites
Yellow markers indicate discontinued sites





Show List of Sites by Station Code
Carbon Cycle Gases
Carbon Cycle Surface Flasks
132 sites in 47 countries
Click on heading title to sort on that column.Code | Name | Country | Latitude | Longitude | Elevation (meters) | Time from GMT | Project |
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ABP* | Arembepe, Bahia | Brazil | -12.770 | -38.170 | 1.0 | -3 hours |
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ALT | Alert, Nunavut | Canada | 82.451 | -62.507 | 185.0 | -5 hours |
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AMS* | Amsterdam Island | France | -37.798 | 77.538 | 55.0 | +5 hours |
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AMT | Argyle, Maine | United States | 45.035 | -68.682 | 52.4 | -5 hours |
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AMY | Anmyeon-do | Republic of Korea | 36.539 | 126.329 | 47.0 | +9 hours |
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ASC | Ascension Island | United Kingdom | -7.967 | -14.400 | 85.0 | -1 hours |
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ASK | Assekrem | Algeria | 23.262 | 5.632 | 2710.0 | +1 hours |
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AVI* | St. Croix, Virgin Islands | United States | 17.750 | -64.750 | 3.0 | -4 hours |
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AZR | Terceira Island, Azores | Portugal | 38.766 | -27.375 | 19.0 | -1 hours |
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BAL* | Baltic Sea | Poland | 55.350 | 17.220 | 3.0 | +1 hours |
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BAO* | Boulder Atmospheric Observatory, Colorado | United States | 40.050 | -105.004 | 1578.7 | -7 hours |
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BHD | Baring Head Station | New Zealand | -41.408 | 174.871 | 85.0 | +12 hours |
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BKT | Bukit Kototabang | Indonesia | -0.202 | 100.318 | 845.0 | +7 hours |
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BME* | St. Davids Head, Bermuda | United Kingdom | 32.368 | -64.648 | 12.0 | -4 hours |
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BMW | Tudor Hill, Bermuda | United Kingdom | 32.265 | -64.879 | 30.0 | -4 hours |
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BRW | Barrow Atmospheric Baseline Observatory | United States | 71.323 | -156.611 | 11.0 | -9 hours |
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BSC* | Black Sea, Constanta | Romania | 44.178 | 28.665 | 0.0 | +2 hours |
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BWD | Brentwood, Maryland | United States | 38.934 | -76.956 | 16.8 | -5 hours |
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CAO | Colorado Atmospheric Observatory | USA | 39.923 | -103.972 | 1508.2 | -7 hours |
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CBA | Cold Bay, Alaska | United States | 55.210 | -162.720 | 21.3 | -9 hours |
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CGO | Cape Grim, Tasmania | Australia | -40.683 | 144.690 | 94.0 | +10 hours |
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CHR | Christmas Island | Republic of Kiribati | 1.700 | -157.152 | 0.0 | -10 hours |
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CIB | Centro de Investigacion de la Baja Atmosfera (CIBA) | Spain | 41.810 | -4.930 | 845.0 | +1 hours |
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CMO* | Cape Meares, Oregon | United States | 45.478 | -123.969 | 30.0 | -8 hours |
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COS* | Cosmos | Peru | -12.120 | -75.330 | 4600.0 | -5 hours |
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CPT | Cape Point | South Africa | -34.352 | 18.489 | 230.0 | +2 hours |
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CRV | Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) | United States | 64.986 | -147.598 | 611.4 | -8 hours |
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CRZ | Crozet Island | France | -46.434 | 51.848 | 197.0 | +5 hours |
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DRP | Drake Passage | N/A | -59.000 | -64.690 | 0.0 | -4 hours |
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DSI | Dongsha Island | Taiwan | 20.699 | 116.730 | 3.0 | +8 hours |
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EIC | Easter Island | Chile | -27.160 | -109.428 | 47.0 | -7 hours |
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FLK* | Falkland Islands | United Kingdom | -51.700 | -57.870 | 51.0 | -5 hours |
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GMI | Mariana Islands | Guam | 13.386 | 144.656 | 0.0 | +10 hours |
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GOZ* | Dwejra Point, Gozo | Malta | 36.048 | 14.889 | 1.0 | +1 hours |
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HBA | Halley Station, Antarctica | United Kingdom | -75.550 | -25.630 | 30.0 | -3 hours |
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HPB | Hohenpeissenberg | Germany | 47.801 | 11.024 | 985.0 | +1 hours |
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HSU* | Humboldt State University | United States | 41.059 | -124.750 | 0.0 | -8 hours |
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HUN | Hegyhatsal | Hungary | 46.956 | 16.652 | 248.0 | +1 hours |
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ICE | Storhofdi, Vestmannaeyjar | Iceland | 63.400 | -20.288 | 118.0 | +0 hours |
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INX | INFLUX (Indianapolis Flux Experiment) | United States | 39.581 | -86.421 | -5 hours |
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ITN* | Grifton, North Carolina | United States | 35.365 | -77.393 | 8.0 | -5 hours |
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IZO | Izana, Tenerife, Canary Islands | Spain | 28.309 | -16.499 | 2372.9 | +0 hours |
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KCO* | Kaashidhoo | Republic of Maldives | 4.970 | 73.470 | 1.0 | +5 hours |
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KEY | Key Biscayne, Florida | United States | 25.665 | -80.158 | 1.0 | -5 hours |
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KPA* | Kitt Peak, Arizona | United States | 32.000 | -112.000 | 2083.0 | -7 hours |
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KUM | Cape Kumukahi, Hawaii | United States | 19.561 | -154.888 | 8.0 | -10 hours |
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KZD* | Sary Taukum | Kazakhstan | 44.084 | 76.871 | 595.0 | +6 hours |
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KZM* | Plateau Assy | Kazakhstan | 43.250 | 77.880 | 2519.0 | +6 hours |
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LAC* | LA Megacities | United States | 34.000 | -118.200 | 100.0 | -8 hours |
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LEF | Park Falls, Wisconsin | United States | 45.945 | -90.273 | 472.0 | -6 hours |
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LEW | Lewisburg, Pennsylvania | United States | 40.945 | -76.879 | 166.0 | -5 hours |
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LLB* | Lac La Biche, Alberta | Canada | 54.954 | -112.467 | 540.0 | -7 hours |
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LLN | Lulin | Taiwan | 23.470 | 120.870 | 2862.0 | +8 hours |
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LMP | Lampedusa | Italy | 35.518 | 12.632 | 45.0 | +1 hours |
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MBC* | Mould Bay, Northwest Territories | Canada | 76.247 | -119.353 | 30.0 | -10 hours |
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MBO | Mt. Bachelor Observatory | United States | 43.977 | -121.686 | 2731.0 | -8 hours |
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MCM* | McMurdo Station, Antarctica | United States | -77.830 | 166.600 | 11.0 | +12 hours |
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MEX | High Altitude Global Climate Observation Center | Mexico | 18.984 | -97.311 | 4464.0 | -6 hours |
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MHD | Mace Head, County Galway | Ireland | 53.326 | -9.899 | 5.0 | +0 hours |
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MID | Sand Island, Midway | United States | 28.219 | -177.368 | 4.6 | -11 hours |
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MKN* | Mt. Kenya | Kenya | -0.062 | 37.297 | 3644.0 | +3 hours |
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MKO* | Mauna Kea, Hawaii | United States | 19.823 | -155.469 | 4199.0 | -10 hours |
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MLF* | Mauna Loa, Hawaii | United States | 19.530 | -155.580 | 3397.0 | -10 hours |
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MLO | Mauna Loa, Hawaii | United States | 19.536 | -155.576 | 3397.0 | -10 hours |
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MRC | Marcellus Pennsylvania | United States | 41.466 | -76.419 | 592.0 | -5 hours |
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MSH | Mashpee, Massachusetts | United States | 41.657 | -70.498 | 32.0 | -5 hours |
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MVY* | Marthas Vineyard, Massachusetts | United States | 41.325 | -70.567 | 0.0 | -5 hours |
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MWO | Mt. Wilson Observatory | United States | 34.225 | -118.059 | 1729.3 | -8 hours |
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NAT | Farol De Mae Luiza Lighthouse | Brazil | -5.795 | -35.185 | 50.0 | -3 hours |
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NEB | NE Baltimore, Maryland | United States | 39.315 | -76.583 | 44.0 | -5 hours |
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NMB | Gobabeb | Namibia | -23.580 | 15.030 | 456.0 | +1 hours |
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NWB | NW Baltimore | United States | 39.344 | -76.685 | 135.0 | -5 hours |
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NWF* | Niwot Ridge Forest, Colorado | United States | 40.030 | -105.550 | 3050.0 | -7 hours |
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NWR | Niwot Ridge, Colorado | United States | 40.053 | -105.586 | 3523.0 | -7 hours |
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NZL* | Kaitorete Spit | New Zealand | -43.830 | 172.630 | 3.0 | +12 hours |
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OPW* | Olympic Peninsula, Washington | United States | 48.300 | -124.628 | 486.0 | -8 hours |
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OXK | Ochsenkopf | Germany | 50.030 | 11.808 | 1022.0 | +1 hours |
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PAL | Pallas-Sammaltunturi, GAW Station | Finland | 67.973 | 24.116 | 565.0 | +2 hours |
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PCO* | Pico, Azores | Portugal | 38.470 | -28.400 | 2225.0 | -1 hours |
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PSA | Palmer Station, Antarctica | United States | -64.774 | -64.053 | 10.0 | -3 hours |
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PSM* | Point Six Mountain, Montana | United States | 47.030 | -113.980 | 2462.0 | -7 hours |
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PTA* | Point Arena, California | United States | 38.955 | -123.741 | 17.0 | -8 hours |
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RPB | Ragged Point | Barbados | 13.165 | -59.432 | 15.0 | -4 hours |
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SCSN03* | South China Sea (3 N) | N/A | 3.000 | 105.000 | 15.0 |
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SCSN06* | South China Sea (6 N) | N/A | 6.000 | 107.000 | 15.0 |
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SCSN09* | South China Sea (9 N) | N/A | 9.000 | 109.000 | 15.0 |
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SCSN12* | South China Sea (12 N) | N/A | 12.000 | 111.000 | 15.0 |
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SCSN15* | South China Sea (15 N) | N/A | 15.000 | 113.000 | 15.0 |
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SCSN18* | South China Sea (18 N) | N/A | 18.000 | 113.500 | 15.0 |
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SCSN21* | South China Sea (21 N) | N/A | 21.000 | 114.000 | 15.0 |
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SCT | Beech Island, South Carolina | United States | 33.406 | -81.833 | 115.2 | -5 hours |
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SDZ* | Shangdianzi | China | 40.650 | 117.117 | 293.0 | +8 hours |
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SEY | Mahe Island | Seychelles | -4.682 | 55.532 | 2.0 | +4 hours |
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SGI* | Bird Island, South Georgia | United Kingdom | -54.000 | -38.050 | 30.0 | -3 hours |
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SGP | Southern Great Plains, Oklahoma | United States | 36.607 | -97.489 | 314.0 | -6 hours |
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SHM | Shemya Island, Alaska | United States | 52.711 | 174.126 | 23.0 | -10 hours |
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SIO* | La Jolla, California | United States | 32.830 | -117.270 | 14.0 | -8 hours |
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SMO | Tutuila | American Samoa | -14.247 | -170.564 | 42.0 | -11 hours |
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SPO | South Pole, Antarctica | United States | -89.980 | -24.800 | 2810.0 | +12 hours |
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STC* | Ocean Station Charlie | United States | 54.000 | -35.000 | 6.0 |
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STM* | Ocean Station M | Norway | 66.000 | 2.000 | 0.0 | +0 hours |
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STR | Sutro Tower, San Francisco, California | United States | 37.755 | -122.453 | 254.0 | -8 hours |
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SUM | Summit | Greenland | 72.596 | -38.422 | 3209.5 | -2 hours |
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SYO | Syowa Station, Antarctica | Japan | -69.013 | 39.590 | 14.0 | +3 hours |
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TAC* | Tacolneston | United Kingdom | 52.518 | 1.139 | 56.0 | +0 hours |
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TAP | Tae-ahn Peninsula | Republic of Korea | 36.738 | 126.133 | 16.0 | +9 hours |
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THD* | Trinidad Head, California | United States | 41.054 | -124.151 | 107.0 | -8 hours |
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TIK | Hydrometeorological Observatory of Tiksi | Russia | 71.597 | 128.889 | 19.0 | +9 hours |
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TMD | Thurmont, Maryland | United States | 39.577 | -77.488 | 561.0 | -5 hours |
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TPI | Taiping Island | Taiwan | 10.379 | 114.371 | 4.0 | +8 hours |
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USH | Ushuaia | Argentina | -54.848 | -68.311 | 12.0 | -3 hours |
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UTA | Wendover, Utah | United States | 39.902 | -113.718 | 1327.0 | -7 hours |
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UUM | Ulaan Uul | Mongolia | 44.452 | 111.096 | 1007.0 | +8 hours |
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WBI | West Branch, Iowa | United States | 41.725 | -91.353 | 241.7 | -6 hours |
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WGC | Walnut Grove, California | United States | 38.264 | -121.490 | 2.0 | -8 hours |
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WIS | Weizmann Institute of Science at the Arava Institute, Ketura | Israel | 29.965 | 35.060 | 151.0 | +2 hours |
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WKT | Moody, Texas | United States | 31.315 | -97.327 | 251.0 | -6 hours |
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WLG | Mt. Waliguan | Peoples Republic of China | 36.288 | 100.896 | 3810.0 | +8 hours |
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WPCN00* | Western Pacific Cruise (0 N) | N/A | 0.000 | 151.100 | 0.0 |
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WPCN05* | Western Pacific Cruise (5 N) | N/A | 5.000 | 149.100 | 0.0 |
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WPCN10* | Western Pacific Cruise (10 N) | N/A | 10.000 | 148.000 | 0.0 |
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WPCN15* | Western Pacific Cruise (15 N) | N/A | 15.000 | 145.000 | 0.0 |
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WPCN20* | Western Pacific Cruise (20 N) | N/A | 20.000 | 142.000 | 0.0 |
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WPCN25* | Western Pacific Cruise (25 N) | N/A | 25.000 | 140.000 | 0.0 |
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WPCN30* | Western Pacific Cruise (30 N) | N/A | 30.000 | 136.800 | 0.0 |
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WPCS05* | Western Pacific Cruise (5 S) | N/A | -5.000 | 153.700 | 0.0 |
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WPCS10* | Western Pacific Cruise (10 S) | N/A | -10.000 | 156.800 | 0.0 |
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WPCS15* | Western Pacific Cruise (15 S) | N/A | -15.000 | 159.300 | 0.0 |
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WPCS20* | Western Pacific Cruise (20 S) | N/A | -20.000 | 161.100 | 0.0 |
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WPCS25* | Western Pacific Cruise (25 S) | N/A | -25.000 | 165.500 | 0.0 |
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WPCS30* | Western Pacific Cruise (30 S) | N/A | -30.000 | 168.000 | 0.0 |
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ZEP | Ny-Alesund, Svalbard | Norway and Sweden | 78.907 | 11.888 | 474.0 | +1 hours |
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Carbon Cycle Airborne Flasks
30 sites in 5 countries
Click on heading title to sort on that column.Code | Name | Country | Latitude | Longitude | Elevation (meters) | Time from GMT | Project |
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AAO* | Airborne Aerosol Observatory, Bondville, Illinois | United States | 40.050 | -88.370 | 230.0 | -6 hours |
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ACG | Alaska Coast Guard | United States | 57.737 | -152.504 | 6.0 | -8 hours |
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BAO* | Boulder Atmospheric Observatory, Colorado | United States | 40.050 | -105.004 | 1578.7 | -7 hours |
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BGI* | Bradgate, Iowa | United States | 42.820 | -94.410 | 355.1 | -6 hours |
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BNE* | Beaver Crossing, Nebraska | United States | 40.800 | -97.180 | 465.9 | -6 hours |
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CAR | Briggsdale, Colorado | United States | 40.635 | -104.327 | 1488.0 | -7 hours |
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CMA | Offshore Cape May, New Jersey | United States | 38.830 | -74.320 | 0.0 | -5 hours |
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CRV* | Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) | United States | 64.986 | -147.598 | 611.4 | -8 hours |
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DND* | Dahlen, North Dakota | United States | 47.500 | -99.240 | 472.4 | -6 hours |
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ESP | Estevan Point, British Columbia | Canada | 49.383 | -126.544 | 7.0 | -8 hours |
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ETL | East Trout Lake, Saskatchewan | Canada | 54.354 | -104.987 | 493.0 | -6 hours |
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FTL* | Fortaleza | Brazil | -3.520 | -38.280 | 3.0 | -3 hours |
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FWI* | Fairchild, Wisconsin | United States | 44.660 | -90.960 | 334.3 | -6 hours |
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HAA* | Molokai Island, Hawaii | United States | 21.230 | -158.950 | 3.0 | -10 hours |
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HFM* | Harvard Forest, Massachusetts | United States | 42.538 | -72.171 | 340.0 | -5 hours |
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HIL | Homer, Illinois | United States | 40.070 | -87.910 | 201.5 | -6 hours |
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INX | INFLUX (Indianapolis Flux Experiment) | United States | 39.581 | -86.421 | -5 hours |
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LEF | Park Falls, Wisconsin | United States | 45.945 | -90.273 | 472.0 | -6 hours |
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NHA | Offshore Portsmouth, New Hampshire (Isles of Shoals) | United States | 42.950 | -70.630 | 0.0 | -5 hours |
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OIL* | Oglesby, Illinois | United States | 41.280 | -88.940 | 192.6 | -6 hours |
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PFA | Poker Flat, Alaska | United States | 64.900 | -148.760 | 210.0 | -9 hours |
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RTA | Rarotonga | Cook Islands | -21.250 | -159.830 | 3.0 | -10 hours |
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SAN* | Santarem | Brazil | -2.850 | -54.950 | 78.0 | -4 hours |
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SCA | Offshore Charleston, South Carolina | United States | 32.770 | -79.550 | 0.0 | -5 hours |
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SGP | Southern Great Plains, Oklahoma | United States | 36.607 | -97.489 | 314.0 | -6 hours |
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TGC | Offshore Corpus Christi, Texas | United States | 27.730 | -96.860 | 0.0 | -6 hours |
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THD | Trinidad Head, California | United States | 41.054 | -124.151 | 107.0 | -8 hours |
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ULB* | Ulaanbaatar | Mongolia | 47.400 | 106.000 | 1350.0 | +8 hours |
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WBI | West Branch, Iowa | United States | 41.725 | -91.353 | 241.7 | -6 hours |
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WGC* | Walnut Grove, California | United States | 38.264 | -121.490 | 2.0 | -8 hours |
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Carbon Cycle In Situ Tall Tower
10 sites in 2 countries
Click on heading title to sort on that column.Code | Name | Country | Latitude | Longitude | Elevation (meters) | Time from GMT | Project |
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AMT | Argyle, Maine | United States | 45.035 | -68.682 | 52.4 | -5 hours |
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BAO* | Boulder Atmospheric Observatory, Colorado | United States | 40.050 | -105.004 | 1578.7 | -7 hours |
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CAO | Colorado Atmospheric Observatory | USA | 39.923 | -103.972 | 1508.2 | -7 hours |
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CRV | Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) | United States | 64.986 | -147.598 | 611.4 | -8 hours |
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ITN* | Grifton, North Carolina | United States | 35.365 | -77.393 | 8.0 | -5 hours |
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LEF | Park Falls, Wisconsin | United States | 45.945 | -90.273 | 472.0 | -6 hours |
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SCT | Beech Island, South Carolina | United States | 33.406 | -81.833 | 115.2 | -5 hours |
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WBI | West Branch, Iowa | United States | 41.725 | -91.353 | 241.7 | -6 hours |
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WGC | Walnut Grove, California | United States | 38.264 | -121.490 | 2.0 | -8 hours |
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WKT | Moody, Texas | United States | 31.315 | -97.327 | 251.0 | -6 hours |
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Carbon Cycle In Situ Observatory
4 sites in 2 countries
Click on heading title to sort on that column.Code | Name | Country | Latitude | Longitude | Elevation (meters) | Time from GMT | Project |
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BRW | Barrow Atmospheric Baseline Observatory | United States | 71.323 | -156.611 | 11.0 | -9 hours |
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MLO | Mauna Loa, Hawaii | United States | 19.536 | -155.576 | 3397.0 | -10 hours |
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SMO | Tutuila | American Samoa | -14.247 | -170.564 | 42.0 | -11 hours |
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SPO | South Pole, Antarctica | United States | -89.980 | -24.800 | 2810.0 | +12 hours |
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Carbon Cycle Surface In Situ
4 sites in 3 countries
Click on heading title to sort on that column.Code | Name | Country | Latitude | Longitude | Elevation (meters) | Time from GMT | Project |
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CHS* | Cherskii | Russia | 68.513 | 161.531 | 30.0 | +11 hours |
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MBO | Mt. Bachelor Observatory | United States | 43.977 | -121.686 | 2731.0 | -8 hours |
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SNP | Shenandoah National Park | United States | 38.617 | -78.350 | 1008.0 | -5 hours |
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TBP | Tambopata | Peru | -12.820 | -69.292 | 200.0 | -5 hours |
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