U.S. Department of EnergyOffice of Scientific and Technical Information
Atmospheric Methyl Chloride
Abstract
This data set provides monthly average concentrations of atmospheric methyl chloride taken from seven locations distributed among the polar, middle, and tropical latitudes of both hemispheres. The seven primary sites include Pt. Barrow, Alaska; Cape Kumukahi and Mauna Loa, Hawaii; Cape Matatula, Samoa; Cape Grim, Tasmania; and the South Pole and Palmer Station, Antarctica. Concentration measurements from these seven sites cover a period of 16 years, extending from 1981-1997. Monthly data taken between 1987-1989 from 20 short-term sites and vertical distribution measured at various latitudes are also provided. Air samples were collected from various sites in stainless steel flasks and methyl chloride concentrations were measured using an Electron Capture Gas Chromatograph. Concentrations are reported as mixing ratios in dry air. The concentrations are determined by using a set of calibration standards that are referenced against a primary standard which is also used to establish the absolute concentration. The primary standards were prepared by the investigators in the absence of an available standard from a centralized location. The data are useful in global methyl chloride budget analyses and for determining the atmospheric distribution and trends of methyl chloride and estimating the total emissions at various latitudes.For access to the data files,more »
- Authors:
-
- Portland State University, Department of Physics
- Oregon Graduate Institute, Department of Environmental Science and Engineering
- Publication Date:
- Other Number(s):
- osti:1394120; doi:10.3334/CDIAC/ATG.004; cdiac:doi 10.3334/CDIAC/atg.004
- Research Org.:
- Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States)
- Sponsoring Org.:
- U.S. DOE > Office of Science (SC) > Biological and Environmental Research (BER) (SC-23)
- Subject:
- 54 ENVIRONMENTAL SCIENCES
- Keywords:
- Atmospheric Methyl Chloride; METHYL CHLORIDE; chloroform (pptv); methycloride (pptv); date
- OSTI Identifier:
- 1394120
- DOI:
- https://doi.org/10.3334/CDIAC/ATG.004
Citation Formats
Khalil, M. A. K., and Rasmussen, R. A. Atmospheric Methyl Chloride. United States: N. p., 2000.
Web. doi:10.3334/CDIAC/ATG.004.
Khalil, M. A. K., & Rasmussen, R. A. Atmospheric Methyl Chloride. United States. doi:https://doi.org/10.3334/CDIAC/ATG.004
Khalil, M. A. K., and Rasmussen, R. A. 2000.
"Atmospheric Methyl Chloride". United States. doi:https://doi.org/10.3334/CDIAC/ATG.004. https://www.osti.gov/servlets/purl/1394120. Pub date:Tue Feb 01 00:00:00 EST 2000
@article{osti_1394120,
title = {Atmospheric Methyl Chloride},
author = {Khalil, M. A. K. and Rasmussen, R. A.},
abstractNote = {This data set provides monthly average concentrations of atmospheric methyl chloride taken from seven locations distributed among the polar, middle, and tropical latitudes of both hemispheres. The seven primary sites include Pt. Barrow, Alaska; Cape Kumukahi and Mauna Loa, Hawaii; Cape Matatula, Samoa; Cape Grim, Tasmania; and the South Pole and Palmer Station, Antarctica. Concentration measurements from these seven sites cover a period of 16 years, extending from 1981-1997. Monthly data taken between 1987-1989 from 20 short-term sites and vertical distribution measured at various latitudes are also provided. Air samples were collected from various sites in stainless steel flasks and methyl chloride concentrations were measured using an Electron Capture Gas Chromatograph. Concentrations are reported as mixing ratios in dry air. The concentrations are determined by using a set of calibration standards that are referenced against a primary standard which is also used to establish the absolute concentration. The primary standards were prepared by the investigators in the absence of an available standard from a centralized location. The data are useful in global methyl chloride budget analyses and for determining the atmospheric distribution and trends of methyl chloride and estimating the total emissions at various latitudes.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/epubs/other/methylchl.html},
doi = {10.3334/CDIAC/ATG.004},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 2000},
month = {Tue Feb 01 00:00:00 EST 2000}
}
Works referencing / citing this record:
New insight into the atmospheric chloromethane budget gained using stable carbon isotope ratios
journal, January 2005
- Keppler, F.; Harper, D. B.; Röckmann, T.
- Atmospheric Chemistry and Physics, Vol. 5, Issue 9