The U.S. government is closed. This site will not be updated; however, NOAA websites and social media channels necessary to protect lives and property will be maintained.

To learn more, visit commerce.gov.

For the latest forecasts and critical weather information, visit weather.gov.

Observation Sites

Select single site by:
or Select multiple sites by:
or by:

Reset

Yellow markers indicate discontinued sites

Boulder, Colorado, United States [BLD]

site location map

Location

  • Country: United States Country Flag
  • Latitude: 39.9910° North
  • Longitude: 105.2607° West
  • Elevation: 1628.00 masl
  • Time Zone: Local Standard Time + 7.0 hour(s) = UTC

Data

GML Projects at Boulder, Colorado

Carbon Cycle Surface Flasks

Parameter Formula First Sample Date Status
Carbon Dioxide CO2 1968-01-02 Ongoing
Carbon Dioxide CO2 2010-08-31 Ongoing
Methane CH4 2010-08-31 Ongoing
Methane CH4 1985-01-30 Ongoing
Carbon Monoxide CO 2010-08-31 Ongoing
Carbon Monoxide CO 1989-06-30 Ongoing
Molecular Hydrogen H2 1989-06-30 Ongoing
Molecular Hydrogen H2 2010-08-31 Ongoing
Nitrous Oxide N2O 1996-03-13 Ongoing
Nitrous Oxide N2O 2010-08-31 Ongoing
Sulfur Hexafluoride SF6 2010-08-31 Ongoing
Sulfur Hexafluoride SF6 2014-10-14 Ongoing
Sulfur Hexafluoride SF6 1996-03-13 Ongoing
Sulfur Hexafluoride SF6 2011-10-06 Ongoing
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 1993-09-03 Ongoing
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 2010-09-30 Ongoing
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 1993-09-03 Ongoing
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 2010-09-30 Ongoing
Carbon-13/Carbon-12 in Methane d13C (CH4) 2003-08-15 Ongoing
Carbon-13/Carbon-12 in Methane d13C (CH4) 2012-03-28 Ongoing
Carbon-14/Carbon in Carbon Dioxide D14C (CO2) 2005-07-27 Ongoing
D/H in Methane dD (CH4) 2002-09-05 Ongoing
HFC-134a CH2FCF3 2014-10-14 Ongoing
HFC-134a CH2FCF3 2010-09-02 Ongoing
HCFC-22 CHF2Cl 2010-09-02 Ongoing
HCFC-22 CHF2Cl 2014-10-14 Ongoing
CFC-12 CCl2F2 2014-10-14 Ongoing
CFC-12 CCl2F2 2010-09-02 Ongoing
Methyl Chloride CH3Cl 2003-08-15 Ongoing
Methyl Chloride CH3Cl 2010-09-02 Ongoing
Methyl Chloride CH3Cl 2014-10-14 Ongoing
CFC-114 CFC-114 2010-09-02 Ongoing
CFC-114 CFC-114 2014-10-14 Ongoing
HCFC-142b CH3CF2Cl 2010-09-02 Ongoing
HCFC-142b CH3CF2Cl 2014-10-14 Ongoing
Halon-1211 CBrClF2 2014-10-14 Ongoing
Halon-1211 CBrClF2 2010-09-02 Ongoing
Methyl Bromide CH3Br 2014-10-14 Ongoing
Methyl Bromide CH3Br 2010-09-02 Ongoing
CFC-11 CCl3F (ion 101) 2010-09-02 Ongoing
CFC-11 CCl3F (ion 103) 2011-10-06 Ongoing
CFC-11 CCl3F (ion 103) 2014-10-14 Ongoing
HCFC-141b CH3CCl2F 2014-10-14 Ongoing
HCFC-141b CH3CCl2F 2010-09-02 Ongoing
Methyl Iodide CH3I 2014-10-14 Ongoing
Methyl Iodide CH3I 2010-09-02 Ongoing
CFC-113 CCl2FCClF2 2014-10-14 Ongoing
CFC-113 CCl2FCClF2 2010-09-02 Ongoing
Dichloromethane CH2Cl2 2014-10-14 Ongoing
Dichloromethane CH2Cl2 2010-09-02 Ongoing
Chloroform CHCl3 2010-09-02 Ongoing
Chloroform CHCl3 2014-10-22 Ongoing
Methyl Chloroform CH3CCl3 2010-09-02 Ongoing
Methyl Chloroform CH3CCl3 2014-10-14 Ongoing
Carbon Tetrachloride CCl4 2014-10-14 Ongoing
Carbon Tetrachloride CCl4 2010-09-02 Ongoing
Dibromomethane CH2Br2 2014-10-14 Ongoing
Dibromomethane CH2Br2 2010-09-02 Ongoing
Perchloroethylene (PCE) C2Cl4 2010-09-02 Ongoing
Perchloroethylene (PCE) C2Cl4 2014-10-14 Ongoing
Bromoform CHBr3 2010-09-02 Ongoing
Bromoform CHBr3 2014-10-14 Ongoing
Benzene C6H6 2010-09-02 Ongoing
Benzene C6H6 2014-10-14 Ongoing
Benzene C6H6 2016-09-13 Ongoing
Carbonyl Sulfide COS 2010-09-02 Ongoing
Carbonyl Sulfide COS 2014-10-14 Ongoing
HCFC-21 CHCl2F 2015-07-16 Ongoing
HCFC-21 CHCl2F 2011-10-06 Ongoing
HFC-152a CH3CHF2 2014-10-14 Ongoing
HFC-152a CH3CHF2 2010-09-02 Ongoing
HCFC-124 CHClFCF3 2010-09-02 Ongoing
HCFC-124 CHClFCF3 2014-10-14 Ongoing
Toluene C7H8 2016-09-13 Ongoing
Toluene C7H8 2012-01-09 Ongoing
Toluene C7H8 2014-10-14 Ongoing
Carbon Disulfide CS2 2010-09-02 Ongoing
Carbon Disulfide CS2 2014-11-04 Ongoing
Ethane C2H6 2011-10-06 Ongoing
Ethane C2H6 2014-10-14 Ongoing
Ethane C2H6 2003-08-15 Ongoing
Ethene C2H4 2011-10-06 Ongoing
Ethene C2H4 2003-08-15 Ongoing
Ethene C2H4 2014-10-14 Ongoing
Propane C3H8 2014-10-14 Ongoing
Propane C3H8 2003-08-15 Ongoing
Propane C3H8 2010-09-02 Ongoing
Propene C3H6 2014-10-14 Ongoing
Propene C3H6 2003-08-15 Ongoing
Propene C3H6 2011-10-06 Ongoing
i-Butane i-C4H10 2011-10-06 Ongoing
i-Butane i-C4H10 2014-10-14 Ongoing
i-Butane i-C4H10 2003-08-15 Ongoing
n-Butane n-C4H10 2014-10-14 Ongoing
n-Butane n-C4H10 2003-08-15 Ongoing
n-Butane n-C4H10 2010-09-02 Ongoing
i-Pentane i-C5H12 2010-09-02 Ongoing
i-Pentane i-C5H12 2003-08-15 Ongoing
i-Pentane i-C5H12 2014-10-14 Ongoing
n-Pentane n-C5H12 2014-10-14 Ongoing
n-Pentane n-C5H12 2003-08-15 Ongoing
n-Pentane n-C5H12 2010-09-02 Ongoing
n-Hexane n-C6H14 2014-10-14 Ongoing
n-Hexane n-C6H14 2011-10-06 Ongoing
n-Hexane n-C6H14 2003-08-15 Ongoing
Ambient Pressure press 2011-11-17 Ongoing
Relative Humidity rh 2011-11-17 Ongoing
isoprene C5H8 2016-09-13 Ongoing
Halon-1301 CF3Br 2010-09-02 Ongoing
Halon-1301 CF3Br 2014-10-14 Ongoing
Halon-2402 CBrF2CBrF2 2010-09-02 Ongoing
Halon-2402 CBrF2CBrF2 2014-10-14 Ongoing
HFC-143a CH3CF3 2010-09-02 Ongoing
HFC-143a CH3CF3 2014-10-14 Ongoing
HFC-227ea CF3CHFCF3 2014-10-14 Ongoing
HFC-227ea CF3CHFCF3 2010-09-02 Ongoing
HFC-365mfc CH3CF2CH2CF3 2010-09-02 Ongoing
HFC-365mfc CH3CF2CH2CF3 2014-10-14 Ongoing
CFC-115 CClF2CF3 2010-09-02 Ongoing
CFC-115 CClF2CF3 2014-10-14 Ongoing
HFC-125 CHF2CF3 2010-09-02 Ongoing
HFC-125 CHF2CF3 2014-10-14 Ongoing
CFC-13 CClF3 2010-09-02 Ongoing
CFC-13 CClF3 2014-10-14 Ongoing
Ethyl Chloride CH3CH2Cl 2010-09-02 Ongoing
HFC-23 CHF3 2010-09-02 Ongoing
HFC-23 CHF3 2014-10-14 Ongoing
PFC-218 C3F8 2010-09-02 Ongoing
PFC-218 C3F8 2014-10-14 Ongoing
Acetylene C2H2 2014-11-04 Ongoing
Acetylene C2H2 2016-09-13 Ongoing
Acetylene C2H2 2010-09-02 Ongoing
HFC-32 CH2F2 2014-10-14 Ongoing
HFC-32 CH2F2 2010-09-02 Ongoing
HFC-134 CHF2CHF2 2010-09-02 Ongoing
HFC-134 CHF2CHF2 2014-11-04 Ongoing
Halon-1011 CH2BrCl 2014-10-14 Ongoing
Halon-1011 CH2BrCl 2011-10-06 Ongoing
PFC-14 CF4 2014-10-14 Ongoing
PFC-14 CF4 2011-10-06 Ongoing
PFC-116 CF3CF3 2011-10-06 Ongoing
PFC-116 CF3CF3 2014-10-14 Ongoing
Nitrogen Trifluoride NF3 2011-10-06 Ongoing
Nitrogen Trifluoride NF3 2014-10-22 Ongoing
Sulfuryl Fluoride SO2F2 2014-10-14 Ongoing
Sulfuryl Fluoride SO2F2 2011-10-06 Ongoing
HFC-236fa CF3CH2CF3 2014-10-14 Ongoing
HFC-236fa CF3CH2CF3 2011-10-06 Ongoing
HCFC-133a CH2ClCF3 2011-10-06 Ongoing
HCFC-133a CH2ClCF3 2014-10-22 Ongoing
CFC-112 CCl3CClF2 2011-10-06 Ongoing
CFC-112 CCl3CClF2 2014-10-14 Ongoing
Trichloroethylene (TCE) C2HCl3 2014-10-14 Ongoing
Trichloroethylene (TCE) C2HCl3 2011-10-06 Ongoing
HFO-1234yf CH2=CFCF3 2011-10-06 Ongoing
HFO-1234yf CH2=CFCF3 2016-09-07 Ongoing
HFO-1234zeE CHF=CHCF3 2011-10-06 Ongoing
HFO-1234zeE CHF=CHCF3 2016-09-07 Ongoing
Ethylene Dichloride (1,2 DCE) CH2ClCH2Cl 2017-12-12 Ongoing
Ethylene Dichloride (1,2 DCE) CH2ClCH2Cl 2017-12-19 Ongoing
HCFC-123 CHCl2CF3 2017-12-19 Ongoing
HCFC-123 CHCl2CF3 2017-12-12 Ongoing
Morpholine C5F11NO 2017-12-18 Ongoing
Morpholine C5F11NO 2017-12-05 Ongoing
Perfluorotriethylamine (PFTEA) (C2F5)3N 2017-12-18 Ongoing
Perfluorotriethylamine (PFTEA) (C2F5)3N 2017-12-05 Ongoing
Perfluorotripropylamine (PFTPA) (C3F7)3N 2017-12-18 Ongoing
Perfluorotripropylamine (PFTPA) (C3F7)3N 2017-12-05 Ongoing
HFC-245fa 2022-09-07 Ongoing
HFC-245fa 2022-09-07 Ongoing

Carbon Cycle Airborne Flasks

Parameter Formula First Sample Date Status
Carbon Dioxide CO2 1996-08-31 Ongoing
Methane CH4 1996-08-31 Ongoing
Carbon Monoxide CO 1996-08-31 Ongoing
Molecular Hydrogen H2 1999-02-08 Ongoing
Nitrous Oxide N2O 1999-02-08 Ongoing
Sulfur Hexafluoride SF6 1999-02-08 Ongoing
Sulfur Hexafluoride SF6 2016-03-02 Ongoing
Carbon-13/Carbon-12 in Carbon Dioxide d13C (CO2) 2001-04-24 Ongoing
Oxygen-18/Oxygen-16 in Carbon Dioxide d18O (CO2) 2001-04-24 Ongoing
Carbon-13/Carbon-12 in Methane d13C (CH4) 2007-02-27 Ongoing
HFC-134a CH2FCF3 2004-06-25 Ongoing
HCFC-22 CHF2Cl 2004-06-25 Ongoing
CFC-12 CCl2F2 2004-06-25 Ongoing
Methyl Chloride CH3Cl 2005-09-07 Ongoing
Methyl Chloride CH3Cl 2004-06-25 Ongoing
CFC-114 CFC-114 2004-06-25 Ongoing
HCFC-142b CH3CF2Cl 2004-06-25 Ongoing
Halon-1211 CBrClF2 2004-06-25 Ongoing
Methyl Bromide CH3Br 2004-06-25 Ongoing
CFC-11 CCl3F (ion 101) 2004-06-25 Ongoing
CFC-11 CCl3F (ion 103) 2016-03-02 Ongoing
HCFC-141b CH3CCl2F 2004-06-25 Ongoing
Methyl Iodide CH3I 2004-06-25 Ongoing
CFC-113 CCl2FCClF2 2004-06-25 Ongoing
Dichloromethane CH2Cl2 2004-06-25 Ongoing
Chloroform CHCl3 2004-06-25 Ongoing
Methyl Chloroform CH3CCl3 2004-06-25 Ongoing
Carbon Tetrachloride CCl4 2004-06-25 Ongoing
Dibromomethane CH2Br2 2004-06-25 Ongoing
Perchloroethylene (PCE) C2Cl4 2004-06-25 Ongoing
Bromoform CHBr3 2004-06-25 Ongoing
Benzene C6H6 2004-06-25 Ongoing
Carbonyl Sulfide COS 2004-06-25 Ongoing
HCFC-21 CHCl2F 2016-03-02 Ongoing
HFC-152a CH3CHF2 2004-06-25 Ongoing
HCFC-124 CHClFCF3 2004-06-25 Ongoing
Toluene C7H8 2016-03-02 Ongoing
Carbon Disulfide CS2 2008-02-11 Ongoing
Ethane C2H6 2005-09-07 Ongoing
Ethane C2H6 2016-03-02 Ongoing
Ethene C2H4 2005-09-07 Ongoing
Ethene C2H4 2016-03-02 Ongoing
Propane C3H8 2008-02-11 Ongoing
Propane C3H8 2005-09-07 Ongoing
Propene C3H6 2005-09-07 Ongoing
Propene C3H6 2016-03-02 Ongoing
i-Butane i-C4H10 2016-03-02 Ongoing
i-Butane i-C4H10 2005-09-07 Ongoing
n-Butane n-C4H10 2008-02-11 Ongoing
n-Butane n-C4H10 2005-09-07 Ongoing
i-Pentane i-C5H12 2008-02-11 Ongoing
i-Pentane i-C5H12 2005-09-07 Ongoing
n-Pentane n-C5H12 2008-02-11 Ongoing
n-Pentane n-C5H12 2005-09-07 Ongoing
n-Hexane n-C6H14 2005-09-07 Ongoing
n-Hexane n-C6H14 2016-03-02 Ongoing
Relative Humidity rh 1996-08-31 Ongoing
Halon-1301 CF3Br 2008-02-11 Ongoing
Halon-2402 CBrF2CBrF2 2008-02-11 Ongoing
HFC-143a CH3CF3 2008-02-11 Ongoing
HFC-227ea CF3CHFCF3 2008-02-11 Ongoing
HFC-365mfc CH3CF2CH2CF3 2008-02-11 Ongoing
CFC-115 CClF2CF3 2008-02-11 Ongoing
HFC-125 CHF2CF3 2008-02-11 Ongoing
CFC-13 CClF3 2008-02-11 Ongoing
Ethyl Chloride CH3CH2Cl 2008-02-11 Ongoing
HFC-23 CHF3 2008-02-11 Ongoing
PFC-218 C3F8 2008-02-11 Ongoing
Acetylene C2H2 2008-02-11 Ongoing
HFC-32 CH2F2 2009-04-14 Ongoing
HFC-134 CHF2CHF2 2009-04-14 Ongoing
Halon-1011 CH2BrCl 2016-03-02 Ongoing
PFC-14 CF4 2016-03-02 Ongoing
PFC-116 CF3CF3 2016-03-02 Ongoing
Nitrogen Trifluoride NF3 2016-03-02 Ongoing
Sulfuryl Fluoride SO2F2 2016-03-02 Ongoing
HFC-236fa CF3CH2CF3 2016-03-02 Ongoing
HCFC-133a CH2ClCF3 2016-03-02 Ongoing
CFC-112 CCl3CClF2 2016-03-02 Ongoing
Trichloroethylene (TCE) C2HCl3 2016-03-02 Ongoing
HFO-1234yf CH2=CFCF3 2020-05-19 Ongoing
HFO-1234zeE CHF=CHCF3 2020-05-19 Ongoing
Ethylene Dichloride (1,2 DCE) CH2ClCH2Cl 2020-05-19 Ongoing
HCFC-123 CHCl2CF3 2020-05-19 Ongoing
Morpholine C5F11NO 2020-05-19 Ongoing
Perfluorotriethylamine (PFTEA) (C2F5)3N 2020-05-19 Ongoing
Perfluorotripropylamine (PFTPA) (C3F7)3N 2020-05-19 Ongoing

Dobson Total Ozone

Parameter Formula First Sample Date Status
Ozone O3 1966-09-19 Ongoing

Lidar

Meteorology

Parameter Formula First Sample Date Status
Wind Speed ws 1994-05-23 Terminated - 2011-07-31
Wind Direction wd 1994-05-23 Terminated - 2011-07-31
Temperature temp 1994-06-10 Terminated - 2011-07-31
Ambient Pressure press 1994-05-26 Terminated - 2011-07-31
Relative Humidity rh 1994-06-10 Terminated - 2011-07-31

Dobson Umkehr Ozone

Parameter Formula First Sample Date Status
Ozone O3 1966-09-19 Ongoing

Spectral UV Irradiance

Trace gases from GGGRN Airborne Flasks