Global Change Master Directory gsfc-gcmduso@mail.nasa.gov 50 2013-05-25T10:56:59Z http://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 8 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NGDC_PALEO_CLIMATEFORCING -180.0,-90.0,180.0,90.0 1500-01-01T00:00:00Z 1999-12-31T00:00:00Z 2012-08-31T04:00:00Z

[from NOAA/NCDC/WDC Paleoclimatology] A new compilation of annually resolved time series of atmospheric trace gas concentrations, solar irradiance, tropospheric aerosol optical ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_CRETE_CAMPC_BYRD -37.0,71.0,-37.0,71.0-61.0,77.0,-61.0,77.0-120.0,-80.0,-120.0,-80.0 2009-01-21T05:00:00Z

About 80 ice core samples from Crete (drilled 1974) and Camp Century, Greenland (drilled 1961, 1962 and 1963-1966) and Byrd Station, Antarctica (drilled 1968 and 1971) were obtained from ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_VOSTOK 106.0,-78.0,106.0,-78.0 2009-01-21T05:00:00Z

Atmospheric concentrations of methane (CH4) have been derived from ice core data in Antarctica for nearly 160,000 years. The 2,083-m-long ice core taken by the Soviet Antarctica Expedition ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NGDC_WDCA_PALEO_GRIP_CH4 -38.0,72.0,-37.0,73.0 1992-05-01T00:00:00Z 1993-05-31T00:00:00Z 2007-08-15T04:00:00Z

This data set consists of atmospheric methane (CH4) concentrations from the 3,230 m ice core taken by the Greenland Ice-core Project (GRIP) covering the period between 40,000 and 8,000 yBP. Methane ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NGDC_WDCA_PALEO_GISP2_CH4 -38.0,72.0,-37.0,73.0 2005-06-14T04:00:00Z

This data set contains methane (CH4) concentration data derived from the Greenland Ice Sheet Project II (GISP2) ice core. The methane concentration was measured from trapped gases in in samples from ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_BYRD_DYE3 -120.0,-80.0,-120.0,-80.0-44.0,65.0,-44.0,65.0 2003-10-29T05:00:00Z

Atmospheric concentrations of CH4 were extracted from the 2,184-m ice core from Byrd Station (Antarctica) for the period 550 - 51,100 BP in 1967-68 by the U.S. Cold regions Research and Engineering ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_SIPLE -83.0,-75.0,-83.0,-75.0 2003-10-29T05:00:00Z

Ice cores drilled at Siple Station (Antarctica) for 200-m depth were analyzed for CH4 concentrations for the period 1771-1956. Two different methods were used for extracting air in the ice core (dry ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_DE08 -83.0,-75.0,-83.0,-75.0 2002-01-24T05:00:00Z

The 234-m long ice core designated "DE08" was drilled in 1987 on the east side of Law Dome, Abtarctica, by the Australian Antarctic Division. The ice core was analyzed with a fine resolution to date ...