CODE NAME COUNTRY LAT LON ALT3 (masl1) COOPERATING AGENCY MID Sand Island, Midway United States 28.2100 -177.3800 15.3 U.S. Fish and Wildlife Service SMO Tutuila American Samoa -14.2474 -170.5644 60.3 NOAA Earth System Research Laboratory, Global Monitoring Division CBA Cold Bay, Alaska United States 55.2100 -162.7200 57.04 U.S. National Weather Service CHR Christmas Island Republic of Kiribati 1.7000 -157.1518 5 Dive Kiribati BRW Barrow, Alaska United States 71.3230 -156.6114 27.5 NOAA Earth System Research Laboratory, Global Monitoring Division MLO Mauna Loa, Hawaii United States 19.5362 -155.5763 3437 NOAA Earth System Research Laboratory, Global Monitoring Division KUM Cape Kumukahi, Hawaii United States 19.5200 -154.8200 8 NOAA Earth System Research Laboratory, Global Monitoring Division CRV Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) United States 64.9863 -147.5980 643.13 NOAA/NESDIS/OSPO/FCDAS HSU Humboldt State University United States 41.0588 -124.7500 7.6 Humbolt State University THD Trinidad Head, California United States 41.0541 -124.1510 112 NOAA Earth System Research Laboratory, Global Monitoring Division STR Sutro Tower, San Francisco, California United States 37.7553 -122.4517 486 Lawrence Berkeley National Laboratory MBO Mt. Bachelor Observatory United States 43.9775 -121.6861 2742.3 University of Washington WGC Walnut Grove, California United States 38.2650 -121.4911 91 Lawrence Berkeley National Laboratory MWO Mt. Wilson Observatory United States 34.2246 -118.0586 1774 UCLA Astrophysics/Solar Observatory UTA Wendover, Utah United States 39.9018 -113.7181 1332 U.S. National Weather Service LLB Lac La Biche, Alberta Canada 54.9500 -112.4500 588 Environment Canada EIC Easter Island Chile -27.1597 -109.4284 69 Direccion Meteorologica de Chile NWR Niwot Ridge, Colorado United States 40.0531 -105.5864 3526 University of Colorado/INSTAAR BAO Boulder Atmospheric Observatory, Colorado United States 40.0500 -105.0040 1884 NOAA Earth System Research Laboratory, Global Monitoring Division SGP Southern Great Plains, Oklahoma United States 36.6070 -97.4890 374 Lawrence Berkeley National Laboratory WKT Moody, Texas United States 31.3149 -97.3269 708 Pinnacle Towers Inc. MEX High Altitude Global Climate Observation Center Mexico 18.9841 -97.3110 4469 Sistema Internacional de Monitoreo Ambiental WBI West Branch, Iowa United States 41.7248 -91.3529 620.6 University of Iowa LEF Park Falls, Wisconsin United States 45.9451 -90.2732 868 Wisconsin Educational Communications Board & US Forest Service; USDA Forest Service INX INFLUX (Indiana Flux Experiment) United States 39.5810 -86.4210 397 Purdue University SCT Beech Island, South Carolina United States 33.4057 -81.8334 420 Savannah River National Laboratory, DOE KEY Key Biscayne, Florida United States 25.6654 -80.1580 6 NOAA Atlantic Oceanographic and Meteorological Laboratory SNP Shenandoah National Park United States 38.6170 -78.3500 Variable LEW Lewisburg, Pennsylvania United States 40.9446 -76.8789 256 Earth Networks, Inc. AMT Argyle, Maine United States 45.0345 -68.6821 160 University of Maine TDF Tierra Del Fuego, Ushuaia Argentina -54.8484 -68.3106 32 Servicio Meteorologico Nacional BMW Tudor Hill, Bermuda United Kingdom 32.2647 -64.8788 60 Bermuda Institute of Ocean Sciences DRP Drake Passage N/A -59.0000 -64.6900 10 National Science Foundation PSA Palmer Station, Antarctica United States -64.9200 -64.0000 15 National Science Foundation ALT Alert, Nunavut Canada 82.4508 -62.5056 205 Environment Canada RPB Ragged Point Barbados 13.1650 -59.4320 20 Private Party SUM Summit Greenland 72.5962 -38.4220 3214.54 National Science Foundation Office of Polar Programs NAT Maxaranguape Brazil -5.5147 -35.2603 20 Instituto de Pesquisas Energéticas e Nucleares, Il Centro de Química e Meio Ambiente, Divisao de Quimica Ambiental AZR Terceira Island, Azores Portugal 38.7660 -27.3750 24 Instituto Nacional de Meteorologia e Geofisica HBA Halley Station, Antarctica United Kingdom -75.6050 -26.2100 35 British Antarctic Survey SPO South Pole, Antarctica United States -89.9800 -24.8000 2821.3 National Science Foundation ICE Storhofdi, Vestmannaeyjar Iceland 63.3998 -20.2884 127 Icelandic Meteorological Office IZO Tenerife, Canary Islands Spain 28.3090 -16.4990 2377.9 Izana Observatory/Meteorological State Agency of Spain ASC Ascension Island United Kingdom -7.9667 -14.4000 90 Met Office (United Kingdom) MHD Mace Head, County Galway Ireland 53.3260 -9.8990 26 National University of Ireland, Galway CIB Centro de Investigacion de la Baja Atmosfera (CIBA) Spain 41.8100 -4.9300 850 Centro de Investigacion de la Baja Atmosfera, Univ. of Valladolid ASK Assekrem Algeria 23.1800 5.4200 1847 Office National de la Meteorologie HPB Hohenpeissenberg Germany 47.8011 11.0245 941 Deutscher Wetterdienst OXK Ochsenkopf Germany 50.0301 11.8084 1172 Max Planck Institute for Biogeochemistry ZEP Ny-Alesund, Svalbard Norway and Sweden 78.9067 11.8889 479 Zeppelin Station/University of Stockholm Meteorological Institute LMP Lampedusa Italy 35.5200 12.6200 50 Ente per le Nuove tecnologie, l’Energia e l’Ambiente NMB Gobabeb Namibia -23.5800 15.0300 461 Gobabeb Training and Research Center HUN Hegyhatsal Hungary 46.9500 16.6500 344 Hungarian Meteorological Service CPT Cape Point South Africa -34.3523 18.4891 260 South African Weather Service PAL Pallas-Sammaltunturi, GAW Station Finland 67.9700 24.1200 565 Finnish Meteorological Institute WIS WIS Station, Negev Desert Israel 30.8595 34.7809 482 Weizmann Institute of Science SYO Syowa Station, Antarctica Japan -69.0000 39.5750 3 National Institute of Polar Research CRZ Crozet Island France -46.4337 51.8478 202 Centre des Faibles Radioactivities/TAAF SEY Mahe Island Seychelles -4.6824 55.5325 6 Seychelles Bureau of Standards WLG Mt. Waliguan Peoples Republic of China 36.2879 100.8964 3815 Chinese Academy of Meteorological Sciences (CAMS) and Qinghai Meteorological Bureau (QMB), China Meteorological Administration (CMA) UUM Ulaan Uul Mongolia 44.4516 111.0956 1012 Mongolian Hydrometeorological Research Institute DSI Dongsha Island Taiwan 20.6992 116.7297 8 National Central University, Taiwan SDZ Shangdianzi Peoples Republic of China 40.6500 117.1170 298 Chinese Academy of Meteorological Sciences (CAMS) and Beijing Meteorological Bureau (BMB), China Meteorological Administration (CMA) LLN Lulin Taiwan 23.4700 120.8700 2867 Lulin Atmospheric Background Station TAP Tae-ahn Peninsula Republic of Korea 36.7376 126.1328 21 Korea-China Centre for Atmospheric Research TIK Hydrometeorological Observatory of Tiksi Russia 71.5965 128.8887 43 GMI Mariana Islands Guam 13.3860 144.6560 5 University of Guam/Marine Laboratory CGO Cape Grim, Tasmania Australia -40.6830 144.6900 164 CSIRO, Atmospheric Research CHS Cherskii Russia 68.5135 161.5313 Variable SHM Shemya Island, Alaska United States 52.7112 174.1260 28 Chugach McKinley BHD Baring Head Station New Zealand -41.4083 174.8710 90 National Institute of Water and Atmospheric Research