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Station Characteristics 2011-11-21/2141913899
GAW ID SMO Samoa (Cape Matatula) (United States)
WMO ID 91766-0 Global station in WMO RA V - South West Pacific
station status established 1974 / full operation 14.24747°S 170.56451°W (77 m a.s.l.)
time zone UTC-11
climate zone Af (Equatorial rainforest, fully humid)  
other affiliations AGAGE/SOGE/NIES, NOAA-ESRL/CCG, NOAA-ESRL/AERO(SMO), NADP(AS01), NDACC, SHADOZ
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 CMDL Baseline Observatories. Cape Matatula is approx. 1 km from the village of Tula. Prevailing winds are marine. Since it's construction, the Samoa Observatory has survived two major hurricanes with only minor damage. A staff of 2 operates the year around facility commuting to work. This Observatory has the distinction of obtaining 30% of its daytime power from solar panels. Picture of Samoa (Cape Matatula) facility

Measurement Program
type data center parameter method contributor data available details
Ozone WOUDC Surface ozone UV photometry [general] NOAA-ESRL-GMD 1975-12-14 ~ 1986-12-31
WDCGG Surface ozone UV photometry [general] NOAA-ESRL-GMD 1975-12-01 ~ 2014-03-31
NDACC Total column ozone Dobson NOAA-ESRL-GMD 1975-12-01 ~ 2012-06-30
WOUDC Total column ozone Dobson NOAA-ESRL-GMD 1975-12-18 ~ 2012-11-16
WOUDC Vertical ozone profile ECC Sonde NOAA-ESRL-GMD 1995-08-08 ~ 2012-12-29
NDACC Vertical ozone profile ## Sonde NOAA-ESRL-GMD 1995-08-08 ~ 2014-10-01
Aerosol Light scattering coefficient, total aerosol Nephelometry, integrating NOAA-ESRL-GMD
Mass concentration (total aerosol) or Mass TSP ## Filter sampling [general] unknown
WDCA Number concentration Condensation particle counter (CPC) 1977-01-01 ~ 2004-02-22
WDCA Number concentration Condensation particle counter (CPC) 2004-02-22 ~ 2014-01-01
WDCA Number concentration Condensation particle counter (CPC) 1992-05-01 ~ 1997-06-30
Number concentration Condensation particle counter (CPC) NOAA-ESRL-GMD
Greenhouse Gas WDCGG C2Cl3F3 (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113) GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-16
WDCGG C2Cl3F3 (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113) GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG C2Cl3F3 (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113) ## Flask sampling NOAA-ESRL-GMD 1977-01-01 ~ 2014-12-01
WDCGG C2F6 (hexafluoroethane, PFC-116) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H2F4 (1,1,1,2-tetrafluoroethane, HFC-134a) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H2F4 (1,1,1,2-tetrafluoroethane, HFC-134a) GC-MS NOAA-ESRL-GMD 1994-08-15 ~ 2014-03-06
WDCGG C2H3Cl2F (1,1-dichloro-1-fluoroethane, HCFC-141b) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H3Cl2F (1,1-dichloro-1-fluoroethane, HCFC-141b) ## Flask sampling NOAA-ESRL-GMD 1991-11-26 ~ 2014-03-06
WDCGG C2H3ClF2 (1-chloro-1,1-difluoroethane, HCFC-142b) ## Flask sampling NOAA-ESRL-GMD 1991-11-26 ~ 2014-03-06
WDCGG C2H3ClF2 (1-chloro-1,1-difluoroethane, HCFC-142b) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H3ClF2 (1-chloro-1,1-difluoroethane, HCFC-142b) GC-ECD NOAA-ESRL-GMD 1998-01-01 ~ 2014-04-15
WDCGG C2H4F2 (1,1-difluoroethane, HFC-152a) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H4F2 (1,1-difluoroethane, HFC-152a) GC-MS NOAA-ESRL-GMD 1994-08-15 ~ 2014-03-06
WDCGG C2HF5 (pentafluoroethane, HFC-125) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C3F8 (octafluoropropane, PFC-218) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C3H2F6 (1,1,1,2,3,3-hexafluoropropane, HFC-236fa) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C3H3F5 (1,1,1,3,3-Pentafluoropropane, HFC-245fa) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C3HF7 (1,1,1,2,3,3,3-Heptafluoropropane, HFC-227ea) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C4H5F5 (1,1,1,3,3-pentafluorobutane, HFC-365mfc) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CBrClF2 (Halon 1211) GC-ECD NOAA-ESRL-GMD 1998-01-01 ~ 2014-04-15
WDCGG CBrClF2 (Halon 1211) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CBrClF2 (Halon 1211) GC-MS NOAA-ESRL-GMD 1991-12-30 ~ 2014-03-06
WDCGG CBrF3 (bromotrifluoromethane, Halon 1301) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CBrF3 (bromotrifluoromethane, Halon 1301) GC-ECD NOAA-ESRL-GMD 1989-07-07 ~ 2006-12-01
WDCGG CCl2F2 (dichlorodifluoromethane, CFC-12) ## Flask sampling NOAA-ESRL-GMD 1977-01-01 ~ 2014-12-01
WDCGG CCl2F2 (dichlorodifluoromethane, CFC-12) GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG CCl2F2 (dichlorodifluoromethane, CFC-12) GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-16
WDCGG CCl3F (trichlorofluoromethane, CFC-11) GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG CCl3F (trichlorofluoromethane, CFC-11) ## Flask sampling NOAA-ESRL-GMD 1977-01-01 ~ 2014-12-01
WDCGG CCl3F (trichlorofluoromethane, CFC-11) GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-16
WDCGG CCl4 GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG CCl4 GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-16
WDCGG CCl4 ## Flask sampling NOAA-ESRL-GMD 1994-11-29 ~ 2014-12-01
WDCGG CF4 (tetrafluoromethane, carbon tetrafluoride, perfluoromethane, PFC-14) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CH3CCl3 (1,1,1-trichloroethane) ## Flask sampling NOAA-ESRL-GMD 1991-11-26 ~ 2014-12-01
WDCGG CH3CCl3 (1,1,1-trichloroethane) GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG CH3CCl3 (1,1,1-trichloroethane) GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-16
WDCGG CH4 GC-FID AGAGE 1985-07-01 ~ 2013-09-30
WDCGG CH4 ## Flask sampling NOAA-ESRL-GMD 1983-04-01 ~ 2013-12-27
WDCGG CH4 [C-13] ## Flask sampling NOAA-ESRL-GMD 1998-01-01 ~ 2011-12-22
WDCGG CHClF2 (chlorodifluoromethane, HCFC-22) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CHClF2 (chlorodifluoromethane, HCFC-22) ## Flask sampling NOAA-ESRL-GMD 1991-11-26 ~ 2014-03-06
WDCGG CHClF2 (chlorodifluoromethane, HCFC-22) GC-ECD NOAA-ESRL-GMD 1998-01-01 ~ 2014-04-15
WDCGG CHF3 (trifluoromethane, HFC-23) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CO2 Non-dispersive IR (NDIR) NOAA-ESRL-GMD 1974-01-01 ~ 2013-12-31
WDCGG CO2 ## Flask sampling NOAA-ESRL-GMD 1972-01-15 ~ 2013-12-27
CO2 Non-dispersive IR (NDIR) unknown
WDCGG CO2 [C-13] ## Flask sampling NOAA-ESRL-GMD 1990-01-01 ~ 2012-12-27
WDCGG CO2 [O-18] ## Flask sampling NOAA-ESRL-GMD 1990-01-04 ~ 2012-12-27
WDCGG N2O ## Flask sampling NOAA-ESRL-GMD 1977-01-01 ~ 2014-01-15
WDCGG N2O GC-ECD NOAA-ESRL-GMD 1987-01-01 ~ 2014-04-14
WDCGG N2O GC-ECD AGAGE 1978-07-01 ~ 2013-09-30
WDCGG SF6 ## Flask sampling NOAA-ESRL-GMD 1994-01-01 ~ 2014-01-15
WDCGG SF6 GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG SF6 GC-ECD NOAA-ESRL-GMD 1998-01-01 ~ 2014-04-15
WDCGG SO2F2 (sulphuryl fluoride) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
Reactive Gas WDCGG C2Cl4 ## Flask sampling NOAA-ESRL-GMD 1993-12-15 ~ 2014-03-06
WDCGG C2Cl4 GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG C2H6 (ethane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
WDCGG C2HCl3 GC-MS AGAGE 2006-05-01 ~ 2012-09-30
WDCGG C3H8 (propane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
WDCGG CH2Cl2 (dichloromethane) ## Flask sampling NOAA-ESRL-GMD 1994-01-12 ~ 2014-03-06
WDCGG CH2Cl2 (dichloromethane) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CH3Br (methylbromide) GC-MS NOAA-ESRL-GMD 1993-11-09 ~ 2014-03-06
WDCGG CH3Br (methylbromide) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CH3Cl (methylchloride) GC-MS AGAGE 2006-05-01 ~ 2013-09-30
WDCGG CH3Cl (methylchloride) GC-ECD NOAA-ESRL-GMD 1998-01-01 ~ 2014-04-15
WDCGG CH3Cl (methylchloride) GC-MS NOAA-ESRL-GMD 1993-11-09 ~ 2014-03-06
WDCGG CHCl3 (chloroform) GC-ECD AGAGE 1996-08-01 ~ 2013-09-30
WDCGG CO ## Flask sampling NOAA-ESRL-GMD 1988-09-01 ~ 2013-12-27
WDCGG i-C4H10 (2-methylpropane, iso-butane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
WDCGG i-C5H12 (2-methylbutane, iso-pentane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
WDCGG n-C4H10 (n-butane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
WDCGG n-C5H12 (n-pentane) GC-FID NOAA-ESRL-GMD 2005-05-12 ~ 2013-10-24
Other Gas WDCGG H2 ## Flask sampling NOAA-ESRL-GMD 1989-01-05 ~ 2005-06-28
Radiation Diffuse solar radiation Pyranometer (global solar, broadband) unknown
Direct solar radiation Pyrheliometer (direct solar, broadband) unknown
Global solar radiation Pyranometer (global solar, broadband) unknown
Radio Nuclide CO2 [C-14] ## Flask sampling unknown
Meteo Precipitation Tipping bucket rain gauge unknown
Pressure Barometer/Pressure sensor unknown
Temperature Thermometer/-element unknown
Trajectories ## Numerical Model NOAA-ESRL-GMD
Trajectories FLEXTRA Empa 2005-01-01 ~ ongoing
Wind direction Wind vane unknown
Wind speed Anemometer [general] unknown

Contact Person(s)
name Dr. James Butler
address NOAA/ESRL/GMD
325 Broadway
Boulder, CO 80303
United States
2008-01-03/-147256505
phone +1 303 497 6898
fax +1 303 492 6975
mailto james.h.butler@noaa.gov
url
GAW function
station function

name Mr. Geoffrey S. Dutton
address Halocarbons and Other Atmosphere Trace Species Group (HATS)/NOAA/ESRL Global Monitoring Division
325 Broadway R/GMD1
Boulder, Colorado 80305-3328
United States
2008-12-16/-147256320
phone +1-303-497-6224
fax +1-303-497-6290
mailto geoff.dutton@noaa.gov
url
GAW function
station function Measurement leader [Greenhouse Gas: C2Cl3F3 (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113), Greenhouse Gas: C2H3ClF2 (1-chloro-1,1-difluoroethane, HCFC-142b), Greenhouse Gas: CBrClF2 (Halon 1211), Greenhouse Gas: CCl2F2 (dichlorodifluoromethane, CFC-12), Greenhouse Gas: CCl3F (trichlorofluoromethane, CFC-11), Greenhouse Gas: CCl4, Greenhouse Gas: CH3CCl3 (1,1,1-trichloroethane), Greenhouse Gas: CHClF2 (chlorodifluoromethane, HCFC-22), Greenhouse Gas: N2O, Greenhouse Gas: SF6, Reactive Gas: CH3Cl (methylchloride)]

name Dr. James W. Elkins
address NOAA ESRL Global Monitoring Division
325 Broadway R/GMD
Boulder, CO 80305-332
United States
2011-01-17/0
phone +1 (303) 497-6224
fax +1 (303) 497-6290
mailto James.W.Elkins@noaa.gov
url www.esrl.noaa.gov/gmd/hats/personnel/elkins/elkins1.html
GAW function
station function Measurement leader [Greenhouse Gas: C2Cl3F3 (1,1,2-trichloro-1,2,2-trifluoroethane, CFC-113), Greenhouse Gas: C2H2F4 (1,1,1,2-tetrafluoroethane, HFC-134a), Greenhouse Gas: C2H3Cl2F (1,1-dichloro-1-fluoroethane, HCFC-141b), Greenhouse Gas: C2H3ClF2 (1-chloro-1,1-difluoroethane, HCFC-142b), Greenhouse Gas: C2H4F2 (1,1-difluoroethane, HFC-152a), Greenhouse Gas: CBrClF2 (Halon 1211), Greenhouse Gas: CBrF3 (bromotrifluoromethane, Halon 1301), Greenhouse Gas: CCl2F2 (dichlorodifluoromethane, CFC-12), Greenhouse Gas: CCl3F (trichlorofluoromethane, CFC-11), Greenhouse Gas: CCl4, Greenhouse Gas: CH3CCl3 (1,1,1-trichloroethane), Greenhouse Gas: CHClF2 (chlorodifluoromethane, HCFC-22), Greenhouse Gas: N2O, Greenhouse Gas: SF6, Reactive Gas: C2Cl4, Reactive Gas: CH2Cl2 (dichloromethane), Reactive Gas: CH3Br (methylbromide), Reactive Gas: CH3Cl (methylchloride)]

name Mr. Robert D. Evans
address NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division
325 Broadway
Boulder, Colorado 80305
United States
2012-05-10/2141914043
phone +1 303 497 6679
fax +1 303 497 5590
mailto Robert.D.Evans@noaa.gov
url
GAW function Member of SAG Ozone, World Calibration Centre, GAW CCL (Reference Scale)
station function Measurement leader [Ozone: Total column ozone]

name Dr. Detlev Helmig
address Associate Research Professor Institute of Arctic and Alpine Research (INSTAAR) University of Colorado
1560 30th Street
Boulder, CO 80309-0450
United States
2013-01-24/-147256377
phone +1 (303) 492-2509
fax
mailto detlev@instaar.colorado.edu
url
GAW function
station function Measurement leader [Reactive Gas: C2H6 (ethane), Reactive Gas: C3H8 (propane), Reactive Gas: i-C4H10 (2-methylpropane, iso-butane), Reactive Gas: i-C5H12 (2-methylbutane, iso-pentane), Reactive Gas: n-C4H10 (n-butane), Reactive Gas: n-C5H12 (n-pentane)]

name Mr. Bryan Johnson
address NOAA/ESRL Global Monitoring Division
325 Broadway R/GMD1
CO 80305-3328 Boulder
United States
2011-08-11/2141913899
phone
fax
mailto Bryan.Johnson@noaa.gov
url
GAW function
station function Measurement leader [Ozone: Vertical ozone profile]

name Mr. Joel Michalski
address National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory, Samoa Observatory
P.O. Box 2568
American Samoa, American Samoa 96799
United States
2001-08-28/jkl
phone +11 (684) 258 2847
fax +11 (684) 699 1701
mailto jmichalski@cmdl.noaa.gov
url www.cmdl.noaa.gov
GAW function
station function Primary station contact

name Dr. Paul C. Novelli
address NOAA-ESRL-GMD
325 Broadway
Boulder, CO 80305
United States
2012-01-12/2141914043
phone +1 303-497-6774
fax +1 303-497-6290
mailto paul.c.novelli@noaa.gov
url
GAW function Member of SAG Reactive Gases
station function Measurement leader [Other Gas: H2, Reactive Gas: CO]

name Dr. John A. Ogren
address NOAA ESRL GMD
325 Broadway
Boulder, CO 80305
United States
2011-02-01/0
phone +1 (303) 497 6210
fax +1 (303) 497-5590
mailto John.A.Ogren@noaa.gov
url
GAW function Joint Scientific Committee OPAG EPAC, Member of SAG Aerosol
station function Measurement leader [Aerosol: Light scattering coefficient, total aerosol, Aerosol: Number concentration]

name Dr. Russ Schnell
address National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Global Monitoring Division, Observatory Operations Group
325 Broadway R/GMD1
Boulder, Colorado 80305
United States
2007-12-13/186
phone +1 (303) 497 6733
fax +1 (303) 497 6290
mailto russell.c.schnell@noaa.gov
url
GAW function
station function Primary station contact

name Kirk Thoning
address NOAA/ESRL Global Monitoring Division
325 Broadway R/GMD1
Boulder, CO 80305-3328
United States
2006-06-20/0
phone +1 303 497 6078
fax
mailto kirk.w.thoning@noaa.gov
url
GAW function
station function Measurement leader [Greenhouse Gas: CO2]

name Mr. Brian A. Vasel
address National Oceanic and Atmospheric Administration, Earth System Research Laboratory
325 Broadway R/GMD1
Boulder, Colorado 80305
United States
2012-02-01/2141914043
phone 303-497-6655
fax
mailto brian.vasel@noaa.gov
url
GAW function
station function

name Mr. Bruce Vaughn
address University of Colorado Institute of Arctic and Alpine Research (INSTAAR)
Campus box 450
Boulder, CO 80309-0450
United States
2006-06-12/0
phone +1-303-492-7985
fax +1-303-492-6388
mailto bruce.vaughn@colorado.edu
url
GAW function
station function Measurement leader [Greenhouse Gas: CH4 [C-13], Greenhouse Gas: CO2 [C-13], Greenhouse Gas: CO2 [O-18]]


References
Manning, A.C., et al. (2003), Interpreting the seasonal cycles of atmospheric oxygen and carbon dioxide concentrations at American Samoa Observatory, GEOPHYSICAL RESEARCH LETTERS, 30, 1333, www.esrl.noaa.gov/gmd/publications/annrpt25/Manning.pdf
Bodhaine, B.A. and DeLuisi, J.J. (1985), An aerosol climatology of Samoa, Journal of Atmospheric Chemistry, 3, 107--122
 
 
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