| References | |
|---|---|
| Climate Explorer URL | climexp.knmi.nl/getindices.cgi?WMO=CDIACData/ch4_annual&STATION=CH4&NPERYEAR=1 |
| Climate Explorer filename | CDIACData/ch4_annual.dat |
| Variable | |
| name | CH4 |
| units | ppb |
| long_name | annual mean of methane concntration |
| Ascii global metadata | |
| description | CH4 [ppb] annual mean of methane concntration, |
| file | ch4_annual_modern.dat |
| title | ch4_annual_modern.dat extended with ch4_annual.in |
| olderfile | ch4_monthly.dat |
| institution | KNMI Climate Explorer and NOAA/ESRL |
| source | www.esrl.noaa.gov/gmd/ccgg/trends_ch4/#global |
| source_url | aftp.cmdl.noaa.gov/products/trends/ch4/ch4_mm_gl.txt |
| contact | ed.dlugokencky@noaa.gov |
| references | Dlugokencky, E. J., L. P. Steele, P. M. Lang, and K. A. Masarie (1994), The growth rate and distribution of atmospheric methane, J. Geophys. Res., 99, 17,021– 17,043, doi:10.1029/94JD01245. |
| climexp_url | ttp://climexp.knmi.nl/getindices.cgi?CDIACData/ch4_monthly |
| aux_institution | CSIRO Marine and Atmospheric Research via NCEI |
| aux_authors | MacFarling Meure, C.; Etheridge, D.M.; Trudinger, C.; Steele, P.; Langenfelds, R.L.; van Ommen, T.D.; Smith, A.M.; Elkins, J. |
| aux_contact | david.etheridge@csiro.au |
| aux_references | Etheridge, D.M., L.P. Steele, R.L. Langenfelds, R.J. Francey, J.-M. Barnola, and V.I. Morgan. 1996. Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice and firn. Journal of Geophysical Research, 101, 4115-4128. |
| aux_source_url | www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2006.txt |
| aux_source | www.ncdc.noaa.gov/paleo-search/study/9959 |
| aux_description | Law Dome ice core (DSS, DE08 and DE08-2), firn air (DSSW20K), and Cape Grim instrumental (deseasonalised archive, insitu and flask) records of CO2 concentrations for the past 2000 years. |
| aux_climexp_url | climexp.knmi.nl/getindices.cgi?CDIACData/ch4_annual |
| aux_history | retrieved from NCEI vr 16 sep 2022 17:36:14 CEST |
| history | user sager 2024-05-10 22:39:33 /nobackup_1/users/sager/ClimateExplorer/climexp_numerical/LINUX/patchseries ch4_annual_modern.dat ch4_annual.in bias user sager 2024-05-10 22:39:33 /nobackup_1/users/sager/ClimateExplorer/climexp_numerical/LINUX/daily2longer ch4_monthly.dat 1 mean retrieved Fri May 10 10:39:33 PM GMT 2024 |
| bias_correction | 73.988 |