Global Change Master Directory gsfc-gcmduso@mail.nasa.gov 50 2013-05-19T04:44:57Z http://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 32 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[AADC]CSIRO_AR_GASLAB 62.0,-90.0,159.0,-41.0 1984-05-01T00:00:00Z T00:00:00Z 2012-05-31T04:00:00Z

Australian Antarctic Division project #124 monitors the background level of major greenhouse gases, and related species (carbon dioxide, methane, carbon monoxide, nitrous oxide, hydrogen, and carbon ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[AADC]ASAC_1004 111.0,-66.8,114.0,-65.8 1976-06-30T00:00:00Z T00:00:00Z 2012-04-04T04:00:00Z

Air from the ice and firn (compressed snow) of the Antarctic ice sheet will be extracted and measured for atmospheric composition in the past. Gases of interest are greenhouse gases (carbon dioxide, ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Sowers_0538538 1888-01-01T00:00:00Z T00:00:00Z 2011-11-09T05:00:00Z

This award supports a project to develop a high-resolution (every 50 yr) methane data set.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Sowers_0125900 -148.8,-81.7,-148.8,-81.7 2010-07-07T04:00:00Z

Over the last 200 years, the atmospheric CH4 burden has doubled in response to increased emissions from various anthropogenic activities. As this trend is liable to continue in the foreseeable ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Moulton_Gas_Data -134.8,-76.15,-134.7,-76.1 2010-07-07T04:00:00Z

Data are included for the elemental and isotopic composition of trapped gases in the A, E and F trenches. Specifically, the d15N of N2, d18O of atm O2, dO2/N2, dAr/N2, total gas content ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]GES_DISC_UARHA2FN_V001 -180.0,-80.0,180.0,80.0 1991-10-01T00:00:00Z T00:00:00Z 2009-08-21T04:00:00Z

The HALOE home page on the WWW is http://haloe.gats-inc.com/home/index.php The Halogen Occultation Experiment (HALOE) on NASA's ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]GES_DISC_UARHA3AT_V001 -180.0,-80.0,180.0,80.0 1991-10-01T00:00:00Z T00:00:00Z 2009-08-21T04:00:00Z

The HALOE home page on the WWW is "http://haloe.gats-inc.com/home/index.php". ...

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]EARTH_LAND_NGDC_PALEO_NICL_GISP -62.0,65.0,-36.0,78.090.0,-83.0,-118.0,-70.0 1958-01-01T00:00:00Z T00:00:00Z 2009-01-21T05:00:00Z

The NICL Inventory describes the ice core holdings of the National Ice Core Laboratory (NICL), a facility for storing, curating, and studying ice cores recovered from the world's polar ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NCDC_PALEO_2006-083 -70.0,60.0,-25.0,80.0 2009-01-21T05:00:00Z

We report atmospheric methane carbon isotope ratios (d13CH4) from the Western Greenland ice margin spanning the Younger Dryas-to-Preboreal (YD-PB) transition. Over the recorded ~800 ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]EARTH_LAND_NGDC_PALEO_VOSTOK1 -107.0,-79.0,-107.0,-79.0 2009-01-21T05:00:00Z

The Vostok Ice Core Data is one of the primary Antarctic Paleoclimate Datasets. It covers the time from the present back to 422,000 years before the present. It is available from the World ...

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]CDIAC_DB1021 -62.52,82.45,-62.52,82.45147.05,-19.28,147.05,-19.28144.68,-41.68,144.68,-41.68-126.53,49.38,-126.53,49.38158.97,-54.48,158.97,-54.48-155.58,19.53,-155.58,19.5362.87,-67.62,62.87,-67.62-1.17,60.17,-1.17,60.17-24.8,-89.98,-24.8,-89.98 1984-04-01T00:00:00Z 2002-01-01T00:00:00Z 2007-07-02T04:00:00Z

Data are available for four atmospheric trace gases at nine stationary sites and one moving platform (aircraft over Cape Grim, Tasmania, and Bass Strait, between the Australian continent and Tasmania). ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_TRENDS_WHOLEAIR -180.0,-90.0,180.0,90.0 1979-04-01T00:00:00Z 2002-06-30T00:00:00Z 2007-06-29T04:00:00Z

This data set consists of whole-air samples are collected in conditioned, evacuated, 2-L stainless steel canisters; each canister is filled to ambient pressure over a period of about 1 minute (approximately ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NCDC_PALEO_TAYLORCH4 158.7,-77.8,158.7,-77.8 2006-10-20T04:00:00Z

Methane data from Brook et al., On the origin and timing of rapid changes in atmospheric methane during the last glacial period, Global Biogeochemical Cycles, 14(2), 559-572. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NGDC_PALEOCLIMATE_SYNCHRO 166.0,-78.0,166.0,-78.0-120.0,-80.0,-120.0,-80.0-38.0,79.0,-38.0,79.0 2006-05-09T04:00:00Z

This data set consists of isotopic, carbon dioxide (CO2), and methane (CH4) data collected from the Byrd and Vostok ice cores (Antarctica) and the Greenland Ice Core Project (GRIP). Data from the ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Byrd_ice_core_methane -180.0,-90.0,180.0,-62.83 2006-05-09T04:00:00Z

A precise relative chronology for Greenland and West Antarctic paleotemperature is extended to 90,000 years ago, based on correlation of atmospheric methane records from the Greenland Ice Sheet Project ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NCDC_PALEO_2005-078 123.21,-75.06,123.21,-75.06 2005-12-02T05:00:00Z

The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH4) and nitrous oxide (N2O) back to 650,000 years before the present. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDA_AR_GEO_SUBMARINE-GAS -57.17,-60.33,-57.17,-60.33 1996-01-01T00:00:00Z T00:00:00Z 2005-06-27T04:00:00Z

The submarine leakage of non volcanic gases, composed mainly by methane (CH4) an traces of CO2 and SH2 observed at Admiralty Sound (Estrecho Bouchard) suggests that accumulation of methane hydrates ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NGDC_PALEO_DOMEC -83.0,-75.0,-83.0,-75.0 2005-06-17T04:00:00Z

This data consists of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) concentrations from the EPICA Dome C ice core (Antarctica). [Abstract] Nitrous oxide (N2O ) concentration records ...

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_LAWDOME 112.83,-66.73,112.83,-66.73-37.62,72.57,-37.62,72.57 1008-01-01T00:00:00Z 1995-12-31T00:00:00Z 2005-06-14T04:00:00Z

This data represents one thousand years of atmospheric methane concentrations. Methane concentrations was measured in air bubbles from 1008-1980 in Antarctic ice cores, and from 1075-1885 in Greenland ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NCDC_PALEO_2004-005 -42.3,75.1,-42.3,75.1 2004-11-10T05:00:00Z

Greenhouse gas measurements along polar ice cores provide important insight into the former composition of the atmosphere, its natural variations, and the responses to fast climatic changes in the ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NOAA_NCDC_PALEO-2004-005 -37.62,72.56,-37.62,72.56-42.33,75.1,-42.33,75.1 2004-03-15T05:00:00Z

These data consist of two data sets: (1) N2O and CH4 record from the NorthGRIP ice core (Greenland) covering Dansgaard-Oeschger Events 9 to 12. Measurements were performed along the North Greenland ...

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_TRENDS_CH4_CSIRO_GASLAB -62.52,82.45,-62.52,82.45147.05,-19.28,147.05,-19.28144.68,-41.68,144.68,-41.68-126.53,49.38,-126.53,49.38158.97,-54.48,158.97,-54.48-155.58,19.53,-155.58,19.5362.87,-67.62,62.87,-67.62-1.17,60.17,-1.17,60.17-24.8,-89.98,-24.8,-89.98 1991-05-01T00:00:00Z 2001-12-31T00:00:00Z 1991-07-01T00:00:00Z 2001-12-31T00:00:00Z 1984-09-01T00:00:00Z 2001-12-31T00:00:00Z 1993-07-01T00:00:00Z 2001-12-31T00:00:00Z 1990-05-01T00:00:00Z 2001-12-31T00:00:00Z 1991-06-01T00:00:00Z 2001-12-31T00:00:00Z 1984-05-01T00:00:00Z 2001-12-31T00:00:00Z 1992-12-01T00:00:00Z 2001-12-31T00:00:00Z 1991-03-01T00:00:00Z 2001-11-31T00:00:00Z 2003-06-10T04:00:00Z

[From the online documentation for CSIRO GASLAB CH4 data]: The listed data have been obtained from flask air samples returned to the CSIRO GASLAB for analysis. Typical sample storage times range ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_CH4_GLOBAL_OGI -180.0,-90.0,180.0,90.0 1980-09-01T00:00:00Z 1991-12-31T00:00:00Z 2003-04-03T05:00:00Z

This dataset represents monthly global averages derived from measurements of atmospheric methane (CH4) at from 8 stations at six globally distributed locations: Barrow, Alaska; Cape Meares, Oregon; ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_ATMOS_CH4_NOAASITES 180.0,-90.0,-180.0,90.0 1983-01-01T00:00:00Z 1992-12-31T00:00:00Z 2003-04-02T05:00:00Z

Monthly atmospheric methane (CH4) concentrations were obtained from 35 globally distributed monitoring sites as part of the National Oceanic and Atmospheric Administration's Climate Diagnostic Monitoring ...

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 ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]CDIAC_NDP049 148.0,-90.0,-88.0,70.0 1978-01-01T00:00:00Z 1989-12-31T00:00:00Z 1995-10-10T04:00:00Z

This Numeric Data Package (NDP-049) consists of atmospheric methane (CH4) concentrations and carbon-13 isotopic abundance derived from air samples collected over the period 1978-1989 at globally distributed ...