GMD Site Description:
Tutuila, American Samoa [SMO]
CountryCountry Flag
American Samoa
Latitude:14.24° South
Longitude:170.57° West
Elevation: 42.00 masl
Time Zone: Local Time + 11 hour(s) = UTC
Contact Name: Mark Cunningham
Address: NOAA Samoa Observatory
P.O. Box 2568
Pago Pago, Cape Matatula, 96799, American Samoa
Phone:011 (684)622-7455
Fax:011 (684)622-7455

Atmospheric Transport
Most Recent Trajectory
Clustered summary of Trajectories

Photo Gallery


Description
The Samoa Observatory is located on the northeastern tip of Tutuila island, American Samoa, on a ridge overlooking the South Pacific Ocean. Established in 1974 on a 26.7 acre site, the observatory is the fourth of the ESRL/GMD Baseline Observatories. Since it's construction, the Samoa Observatory has survived two major hurricanes with only minor damage. A staff of 3 operates the year around facility commuting to work. This Observatory has the distinction of obtaining 30% of its daytime power from solar panels.
 

GMD Projects at Tutuila

Carbon Cycle Surface Flasks

Parameter Formula First Sample Date Most Recent Sample Date
Carbon Dioxide CO2 1973-08-27 2008-04-03
Methane CH4 1983-04-23 2008-04-03
Carbon Monoxide CO 1988-09-22 2008-04-03
Molecular Hydrogen H2 1989-03-17 2008-04-03
Nitrous Oxide N2O 1997-05-07 2008-04-03
Sulfur Hexafluoride SF6 1997-05-07 2008-04-03
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 1990-01-04 2008-03-18
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 1994-09-22 2008-03-18
Carbon-13/Carbon-12 in Methane d13C (CH4) 1998-01-06 2008-03-18
methyl chloride CH3Cl 2006-02-14 2006-10-11
D/H in Methane dD (CH4) 2005-03-28 2008-03-06
ethane C2H6 2005-05-12 2006-10-16
ethene C2H4 2005-05-12 2006-10-11
propane C3H8 2005-05-12 2006-10-16
propene C3H6 2005-05-12 2006-10-16
i-butane i-C4H10 2005-05-12 2006-10-16
n-butane n-C4H10 2005-05-12 2006-10-16
i-pentane i-C5H12 2006-02-14 2006-10-16
n-pentane n-C5H12 2005-05-12 2006-10-16
n-hexane n-C6H14 2005-05-12 2006-10-16
wind speed 1992-07-06 2008-04-23
wind direction 1992-07-06 2008-04-23
ambient temperature 2004-08-10 2004-09-07

Carbon Cycle In Situ Observatory

Parameter Formula First Sample Date Most Recent Sample Date
Carbon Dioxide CO2 1976-01-01 2008-04-29

HATS Flask Sampling

HATS In Situ Observatory

Aerosol Surface, Continuous Measurements

Continuous Radiation Measurements

Parameter Formula First Sample Date Most Recent Sample Date
Direct Beam 1979-01-01 Ongoing
Shortwave Global 1976-01-09 Ongoing
Diffuse 1995-08-22 Ongoing
Downward Longwave 1999-08-06 Ongoing

Surface Ozone

Ozonesonde

Trajectories

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