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Sand Island, Midway, United States [MID]


  • Country: United States Country Flag
  • Latitude: 28.2100° North
  • Longitude: 177.38° West
  • Elevation: 11.00 masl
  • Time Zone: Local Standard Time + 11.0 hour(s) = UTC


Cooperating Agencies

Site is located at Midway Atoll National Wildlife Refuge.The Refuge is approximately 2,012 km NW of Honolulu, HI andconsists of three islands (Sand, Eastern, and Spit) whichare surrounded by a fringing coral reef. The entire Refugeis 120,749 ha in size and is home to over 2 million seabirds.

GMD Projects at Sand Island, Midway

Carbon Cycle Surface Flasks

Parameter Formula First Sample Date Status
Carbon Dioxide CO2 1985-05-03 Ongoing
Methane CH4 1985-05-03 Ongoing
Carbon Monoxide CO 1990-11-27 Ongoing
Molecular Hydrogen H2 1990-11-27 Ongoing
Nitrous Oxide N2O 1997-07-30 Ongoing
Sulfur Hexafluoride SF6 1997-07-30 Ongoing
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 1992-01-28 Ongoing
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 1992-01-28 Ongoing
Carbon-13/Carbon-12 in Methane d13C (CH4) 2015-12-23 Ongoing
Methyl Chloride CH3Cl 2006-02-27 Ongoing
Benzene C6H6 2007-01-01 Ongoing
toluene C7H8 2007-01-01 Ongoing
ethane C2H6 2006-02-27 Ongoing
ethene C2H4 2006-02-27 Ongoing
propane C3H8 2006-02-27 Ongoing
propene C3H6 2006-02-27 Ongoing
i-butane i-C4H10 2006-02-27 Ongoing
n-butane n-C4H10 2006-02-27 Ongoing
i-pentane i-C5H12 2006-02-27 Ongoing
n-pentane n-C5H12 2006-02-27 Ongoing
n-hexane n-C6H14 2006-02-27 Ongoing
isoprene C5H8 2007-01-01 Ongoing
Acetylene C2H2 2007-10-09 Ongoing