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Barrow Atmospheric Baseline Observatory, United States [BRW]

Location

Country: United States
Latitude: 71.3230° North
Longitude: 156.6114° West
Elevation: 11.00 masl
Time Zone: Local Standard Time + 9.0 hour(s) = UTC

Contact

Address: Barrow Atmospheric Baseline Observatory
P.O. Box 888
Utqiaġvik, Alaska, 99723-0888, United States
Phone: (907) 852-6500
Fax: (907) 852-4622

Data

Cooperating Agencies

NOAA Global Monitoring Laboratory

The Barrow Atmospheric Baseline Observatory, established in 1973, is located near sea level 8 km east of Utqiaġvik (formerly Barrow), Alaska at 71.32 degrees north. This facility is staffed by 2 engineers/scientists who often commute to work in winter on snow machines. Due to its unique location, dedicated and highly-trained staff, excellent power and communications infrastructure, the site is host to numerous cooperative research projects from around the world.

BRW's location receives minimal influence from anthropogenic effects. It is about 8 km northeast of the village of Utqiaġvik and has a prevailing east-northeast wind off the Beaufort Sea. It is attended at least 5 days a week for routine inspection and maintenance of the instrumentation. Although the measurements at BRW are made over open tundra, there are large lagoons and a number of lakes in the vicinity, and the Arctic Ocean is less than 3 km northwest of the site. Because of its proximity to these bodies of water and the fact that the prevailing winds are off the Beaufort Sea, BRW is perhaps best characterized as having an Arctic maritime climate affected by variations of weather and sea ice conditions in the Central Arctic.

GML Projects at Barrow Atmospheric Baseline Observatory

Carbon Cycle Surface Flasks

Parameter	Formula	First Sample Date	Status
Carbon Dioxide	CO₂	1971-04-25	Ongoing
Methane	CH₄	1983-04-06	Ongoing
Carbon Monoxide	CO	1988-07-24	Ongoing
Molecular Hydrogen	H₂	1988-07-24	Ongoing
Nitrous Oxide	N₂O	1997-05-02	Ongoing
Sulfur Hexafluoride	SF₆	2023-01-25	Ongoing
Sulfur Hexafluoride	SF₆	1997-05-02	Ongoing
Carbon-13/Carbon-12 in Carbon Dioxide	d¹³C (CO₂)	1990-01-06	Ongoing
Oxygen-18/Oxygen-16 in Carbon Dioxide	d¹⁸O (CO₂)	1990-01-06	Ongoing
Carbon-13/Carbon-12 in Methane	d¹³C (CH₄)	1998-01-03	Ongoing
D/H in Methane	dD (CH₄)	2005-04-01	Terminated - 2010-03-12
HFC-134a	CH₂FCF₃	2023-01-25	Ongoing
HCFC-22	CHF₂Cl	2023-01-25	Ongoing
CFC-12	CCl₂F₂	2023-01-25	Ongoing
Methyl Chloride	CH₃Cl	2023-01-25	Ongoing
Methyl Chloride	CH₃Cl	2005-05-20	Terminated - 2018-06-21
CFC-114	CFC-114	2023-01-25	Ongoing
HCFC-142b	CH₃CF₂Cl	2023-01-25	Ongoing
Halon-1211	CBrClF₂	2023-01-25	Ongoing
Methyl Bromide	CH₃Br	2023-01-25	Ongoing
CFC-11	CCl₃F (ion 103)	2023-01-25	Ongoing
HCFC-141b	CH₃CCl₂F	2023-01-25	Ongoing
Methyl Iodide	CH₃I	2023-01-25	Ongoing
CFC-113	CCl₂FCClF₂	2023-01-25	Ongoing
Dichloromethane	CH₂Cl₂	2023-01-25	Ongoing
Chloroform	CHCl₃	2023-01-25	Ongoing
Methyl Chloroform (97)	CH₃CCl₃	2023-01-25	Ongoing
Carbon Tetrachloride	CCl₄	2023-01-25	Ongoing
Methylene Bromide	CH₂Br₂	2023-01-25	Ongoing
Perchloroethylene (PCE)	C₂Cl₄	2023-01-25	Ongoing
Bromoform	CHBr₃	2023-01-25	Ongoing
Benzene	C₆H₆	2023-01-25	Ongoing
Benzene	C₆H₆	2007-02-16	Terminated - 2018-06-21
Carbonyl Sulfide	COS	2023-01-25	Ongoing
HCFC-21	CHCl₂F	2023-01-25	Ongoing
HFC-152a	CH₃CHF₂	2023-01-25	Ongoing
HCFC-124	CHClFCF₃	2023-01-25	Ongoing
Methylbenzene	C₇H₈	2007-02-16	Terminated - 2018-06-21
Carbon Disulfide	CS₂	2023-01-25	Ongoing
Ethane	C₂H₆	2005-05-20	Terminated - 2018-06-21
Ethane	C₂H₆	2023-01-25	Ongoing
Ethylene	C₂H₄	2023-01-25	Ongoing
Ethylene	C₂H₄	2005-05-20	Terminated - 2018-06-21
Propane	C₃H₈	2023-01-25	Ongoing
Propane	C₃H₈	2005-05-20	Terminated - 2018-06-21
Propylene	C₃H₆	2005-05-20	Terminated - 2018-06-21
Propylene	C₃H₆	2023-01-25	Ongoing
Isobutane	i-C₄H₁₀	2005-05-20	Terminated - 2018-06-21
Isobutane	i-C₄H₁₀	2023-01-25	Ongoing
n-Butane	n-C₄H₁₀	2023-01-25	Ongoing
n-Butane	n-C₄H₁₀	2005-05-20	Terminated - 2018-06-21
isopentane	i-C₅H₁₂	2005-05-20	Terminated - 2018-06-21
isopentane	i-C₅H₁₂	2023-01-25	Ongoing
n-Pentane	n-C₅H₁₂	2005-05-20	Terminated - 2018-06-21
n-Pentane	n-C₅H₁₂	2023-01-25	Ongoing
n-Hexane	n-C₆H₁₄	2023-01-25	Ongoing
n-Hexane	n-C₆H₁₄	2005-05-20	Terminated - 2018-06-21
isoprene	C₅H₈	2007-02-16	Terminated - 2018-06-21
Halon-1301	CF₃Br	2023-01-25	Ongoing
Halon-2402	CBrF₂CBrF₂	2023-01-25	Ongoing
HFC-143a	CH₃CF₃	2023-01-25	Ongoing
HFC-227ea	CF₃CHFCF₃	2023-01-25	Ongoing
HFC-365mfc	CH₃CF₂CH₂CF₃	2023-01-25	Ongoing
CFC-115	CClF₂CF₃	2023-01-25	Ongoing
HFC-125	CHF₂CF₃	2023-01-25	Ongoing
CFC-13	CClF₃	2023-01-25	Ongoing
HFC-23	CHF₃	2023-01-25	Ongoing
PFC-218	C₃F₈	2023-01-25	Ongoing
Acetylene	C₂H₂	2007-05-25	Terminated - 2018-06-21
Acetylene	C₂H₂	2023-01-25	Ongoing
HFC-32	CH₂F₂	2023-01-25	Ongoing
HFC-134	CHF₂CHF₂	2023-01-25	Ongoing
Halon-1011	CH₂BrCl	2023-01-25	Ongoing
Carbon-14/Carbon in Methane	D¹⁴C (CH₄)	2013-03-26	Terminated - 2021-02-22
Carbon-13/Carbon-12 in Carbon Monoxide	d¹³C (CO)	1990-03-28	Terminated - 1996-08-21
PFC-14	CF₄	2023-01-25	Ongoing
PFC-116	CF₃CF₃	2023-01-25	Ongoing
Trifluoroamine	NF₃	2023-01-25	Ongoing
Sulfuryl Fluoride	SO₂F₂	2023-01-25	Ongoing
HFC-236fa	CF₃CH₂CF₃	2023-01-25	Ongoing
HCFC-133a	CH₂ClCF₃	2023-01-25	Ongoing
CFC-112	CCl₃CClF₂	2023-01-25	Ongoing
Trichloroethylene (TCE)	C₂HCl₃	2023-01-25	Ongoing
HFO-1234yf	CH₂=CFCF₃	2023-01-25	Ongoing
HFO-1234zeE	CHF=CHCF₃	2023-01-25	Ongoing
ethylene dichloride (1,2 DCE)	CH₂ClCH₂Cl	2023-01-25	Ongoing
HCFC-123	CHCl₂CF₃	2023-01-25	Ongoing
Morpholine	C₅F₁₁NO	2023-01-25	Ongoing
Perfluorotriethylamine (PFTEA)	(C₂F₅)₃N	2023-01-25	Ongoing
Perfluorotripropylamine (PFTPA)	(C₃F₇)₃N	2023-01-25	Ongoing
HFC-245fa		2023-01-25	Ongoing

Carbon Cycle In Situ Observatory

Parameter	Formula	First Sample Date	Status
Carbon Dioxide	CO₂	1973-07-24	Ongoing
Methane	CH₄	1986-01-29	Ongoing
Carbon Monoxide	CO	1991-09-11	Ongoing
Nitrous Oxide	N₂O	2013-06-27	Ongoing

HATS Flask Sampling

Parameter	Formula	First Sample Date	Status
HFC-134a	CH₂FCF₃	1994-11-25	Ongoing
HCFC-22	CHF₂Cl	1992-04-08	Ongoing
CFC-12	CCl₂F₂	2010-01-04	Ongoing
Methyl Chloride	CH₃Cl	1994-04-15	Ongoing
HCFC-142b	CH₃CF₂Cl	1992-04-08	Ongoing
Halon-1211	CBrClF₂	1992-02-14	Ongoing
Methyl Bromide	CH₃Br	1994-01-26	Ongoing
HCFC-141b	CH₃CCl₂F	1993-01-07	Ongoing
CFC-113	CCl₂FCClF₂	1992-02-14	Ongoing
Dichloromethane	CH₂Cl₂	1994-04-15	Ongoing
Perchloroethylene (PCE)	C₂Cl₄	1993-12-11	Ongoing
Carbonyl Sulfide	COS	2000-03-25	Ongoing
HFC-152a	CH₃CHF₂	2000-08-03	Ongoing
Halon-2402	CBrF₂CBrF₂	1995-02-25	Ongoing
HFC-227ea	CF₃CHFCF₃	2011-06-13	Ongoing
HFC-365mfc	CH₃CF₂CH₂CF₃	2009-08-10	Ongoing
Methyl Chloroform	CH₃CCl₃	1992-04-08	Ongoing
CFC-11	CCl₃F	2010-01-04	Ongoing

HATS In Situ Observatory

Parameter	Formula	First Sample Date	Status
Nitrous Oxide	N₂O	1998-06-16	Ongoing
Sulfur Hexafluoride	SF₆	1998-06-15	Ongoing
HCFC-22	CHF₂Cl	1998-11-05	Ongoing
CFC-12	CCl₂F₂	1998-06-15	Ongoing
Methyl Chloride	CH₃Cl	1998-08-27	Ongoing
HCFC-142b	CH₃CF₂Cl	1998-09-03	Ongoing
Halon-1211	CBrClF₂	1998-06-15	Ongoing
CFC-113	CCl₂FCClF₂	1998-06-16	Ongoing
Carbon Tetrachloride	CCl₄	1998-06-16	Ongoing
Methyl Chloroform	CH₃CCl₃	1998-06-16	Ongoing
CFC-11	CCl₃F	1998-06-16	Ongoing

Aerosol Surface In-Situ

Parameter	Formula	First Sample Date	Status
Light Scattering Coefficient	σ_sp	1976-05-07	Ongoing
Light Absorption Coefficient	σ_ap	1988-01-01	Ongoing
Particle Number Concentration	N_t	1976-05-07	Ongoing
Aerosol Chemical Composition		1998-01-01	Ongoing
Cloud condensation nucleus number concentration	N_ccn	2007-01-01	Ongoing
Aerosol Hygroscopic Growth	f(RH)	2007-01-01	Ongoing
Aerosol Size Distribution	n(D)	2007-01-01	Ongoing

Radiation In-Situ Observatory

Parameter	First Sample Date	Status
Direct Normal	1976-03-01	Ongoing
Downwelling Shortwave	1976-03-01	Ongoing
Diffuse	1995-07-05	Ongoing
Upwelling Shortwave	1985-01-01	Ongoing
Downwelling Longwave	1993-04-20	Ongoing
Upwelling Longwave	1993-04-20	Ongoing
Spectral	2001-04-01	Ongoing

Surface Ozone

Parameter	Formula	First Sample Date	Status
Ozone	O₃	1973-03-14	Ongoing

Dobson Total Ozone

Parameter	Formula	First Sample Date	Status
Ozone	O₃	1973-07-29	Ongoing

Meteorology

Parameter	Formula	First Sample Date	Status
Wind Speed	ws	1973-02-17	Ongoing
Wind Direction	wd	1973-02-17	Ongoing
Temperature	temp	1976-01-01	Ongoing
Ambient Pressure	press	1976-01-01	Ongoing
Relative Humidity	rh	1976-01-01	Ongoing