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 2008-09-11
Methane CH4 1983-04-23 2008-09-11
Carbon Monoxide CO 1988-09-22 2008-09-11
Molecular Hydrogen H2 1989-03-17 2008-09-11
Nitrous Oxide N2O 1997-05-07 2008-09-11
Sulfur Hexafluoride SF6 1997-05-07 2008-09-11
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 1990-01-04 2008-06-26
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 1994-09-22 2008-06-26
Carbon-13/Carbon-12 in Methane d13C (CH4) 1998-01-06 2008-06-26
methyl chloride CH3Cl 2006-02-14 2007-03-28
Benzene C6H6 2007-02-23 2007-03-28
toluene C7H8 2007-02-27 2007-03-28
D/H in Methane dD (CH4) 2005-03-28 2008-06-04
ethane C2H6 2005-05-12 2007-03-28
ethene C2H4 2005-05-12 2007-03-28
propane C3H8 2005-05-12 2007-03-28
propene C3H6 2005-05-12 2007-03-28
i-butane i-C4H10 2005-05-12 2007-03-28
n-butane n-C4H10 2005-05-12 2007-03-28
i-pentane i-C5H12 2006-02-14 2007-03-28
n-pentane n-C5H12 2005-05-12 2007-03-28
n-hexane n-C6H14 2005-05-12 2007-03-28
wind speed 1992-07-06 2008-09-11
wind direction 1992-07-06 2008-09-11
ambient temperature 2004-08-10 2004-09-07
isoprene C5H8 2007-02-27 2007-03-28

Carbon Cycle In Situ Observatory

Parameter Formula First Sample Date Most Recent Sample Date
Carbon Dioxide CO2 1976-01-01 2008-10-01

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

Dobson Ozone

Parameter Formula First Sample Date Most Recent Sample Date
Total Ozone Total Ozone 1975-12-18 2005-12-30

Ozonesonde

Trajectories

Lidar

Meteorology

Parameter Formula First Sample Date Most Recent Sample Date
wind speed 2 meters 2008-01-01 2008-08-03
Wind Direction 2 Meters 2008-01-01 2008-08-03
Wind Speed 10 Meters 2008-01-01 2008-08-03
Wind Direction 10 Meters 2008-01-01 2008-08-03
Wind Speed Top 2008-01-01 2008-08-03
Wind Direction Top 2008-01-01 2008-08-03
Barometric Pressure 2008-01-01 2008-08-03
Relative Humidity 2 Meters 2008-01-01 2008-08-03
Temperature 2 Meters 2008-01-01 2008-08-03
Temperature 10 Meters 2008-01-01 2008-08-03
temperature Top 2008-01-01 2008-08-03
Precipitation 2008-01-01 2008-08-03