Global Change Master Directory gsfc-gcmduso@mail.nasa.gov 50 2013-05-24T02:34:00Z http://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 453 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Steig_0963924 30.0,-90.0,30.0,-60.0 2013-05-10T04:00:00Z

Ice cores and surface snow samples were collected from in overland traverses in East Antarctica: one from the Norwegian Troll Station to the United States South Pole Station in 2007-2008; and a return ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]bay_0738658 112.08639,-79.4675,112.08639,-79.4675 2013-05-07T04:00:00Z

Preliminary data from an optical log made at WAIS Divide with the laser dust logger in December 2011, in the clear ice at depths between 1403.58 m and 3329.8 m. The Dust Logger measures the amount ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]joughin_0631973 -124.8,-80.8,-86.7,-73.9 1980-01-01T00:00:00Z 2009-12-31T00:00:00Z 2013-05-02T04:00:00Z

This data set includes radar-derived annual accumulation rates over Thwaites Glacier between 1980 and 2009 and a gridded climatology (1985-2009) of snow accumulation over Pine Island and Thwaites ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]MOD29E1DV5 -180.0,-90.0,180.0,90.0 2000-02-24T00:00:00Z T00:00:00Z 2013-04-04T04:00:00Z

MODIS/Terra Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day (MOD29E1D) data set contains fields for sea ice by reflectance and Ice Surface Temperature (IST). Each data granule covers the ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]bell_0636883 20.0,-90.0,50.0,-75.0 2008-12-01T00:00:00Z 2009-01-20T00:00:00Z 2013-04-04T04:00:00Z

This award support a project to study the role that subglacial water plays in the overall stability of major ice sheets.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]US_ITASE-99-1 -122.63,-80.62,-122.63,-80.62 1713-01-01T00:00:00Z 2000-12-31T00:00:00Z 2013-01-24T05:00:00Z

Sub-annually resolved ice core chemistry data from various sites on the Antarctic Ice Sheet were obtained from 1999 to 2008 during the US International Trans-Antarctic Scientific Expedition (US ITASE) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]rice_0739444 2013-01-22T05:00:00Z

(1) This award originally supported a project to study the mode of formation and causes of glacial earthquakes -- which we argued [Tsai et al., J. Geophys. Res., 2008] to be affiliated with iceberg ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]MOD29P1D1 -180.0,-90.0,180.0,90.0 2001-01-24T00:00:00Z T00:00:00Z 2013-01-16T05:00:00Z

Sea ice products from the Moderate Resolution Imaging Spectroradiometer (MODIS) include level 2 swath data and level 3 gridded day and night composites, at 1 km resolution. Level 3 products consist ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]steffen_0732946 2009-01-01T00:00:00Z 2011-10-01T00:00:00Z 2013-01-07T05:00:00Z

Our ground penetrating radar surveys focused on key structural features of the ice shelf, including basal crevasses, marine ice and rifts. Here we present our published work on basal crevasses. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]cuffey_0537661 -112.08,-79.47,-112.08,-79.47 2012-11-13T05:00:00Z

This award supports analyses of stable isotopes of water, dD, d18O and deuterium excess in the proposed West Antarctic Ice Sheet Divide (WAIS) deep ice core. The project will analyze a continuous ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]hatcher_0739684 2012-10-25T04:00:00Z

This award supports a project to fully develop the analytical protocols needed to exploit a relatively new technique for the analysis of soluble organic matter in ice core samples. The technique couples ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]baker_0738975 2009-09-01T00:00:00Z 2011-03-01T00:00:00Z 2009-01-01T00:00:00Z 2009-06-01T00:00:00Z 2006-06-01T00:00:00Z 2009-01-01T00:00:00Z 2010-02-01T00:00:00Z 2010-03-01T00:00:00Z 2008-01-01T00:00:00Z 2009-06-01T00:00:00Z 2009-07-01T00:00:00Z 2011-12-31T00:00:00Z 2012-09-21T04:00:00Z

This award supports a project to use advanced microscopic and spectroscopic techniques to explore critical questions about microstructure in ice cores, in particular the microstructural locations ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]albert_0538495 2.53,-90.0,2.53,-72.02 2008-12-23T00:00:00Z 2009-02-21T00:00:00Z 2012-09-14T04:00:00Z

This award supports a project of scientific investigations along two overland traverses in East Antarctica: one going from the Norwegian Troll Station (72deg. S, 2deg. E) to the United States South ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]pettit_0940650 -165.0,-85.0,-105.0,-75.0 2012-09-12T04:00:00Z

This award supports a project to constrain the accumulation rate, thickness, and temperature history for Siple Dome using a vertical velocity profile that includes the effects of an evolving fabric ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]waddington_0636997 2012-09-06T04:00:00Z

We provide a the synthetic, sparse depth-age data generated using a 1-d ice-flow model. The age data include red noise to simulate real depth-age data. The inferred depth-age data profile are included. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]waddington_0636996 -165.0,-85.0,-105.0,-75.0 2012-09-04T04:00:00Z

This record includes two datasets and accompanying code. The anisotropic flow dataset provides velocity and fabric evolution of anisotropic ice for several numerical experiments. The experiments ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Anandakrishnan_0632198 110.0,-74.0,110.0,-74.0 2008-11-01T00:00:00Z 2010-01-30T00:00:00Z 2012-09-04T04:00:00Z

A project to study ice sheet history and dynamics on the Thwaites Glacier and Pine Island Glacier in the Amundsen Sea sector of the West Antarctic Ice Sheet.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0111 1980-01-01T00:00:00Z T00:00:00Z 2012-09-03T04:00:00Z

The Automatic Weather Station (AWS) Project, funded by the NSF Office of Polar Programs, involves collecting meteorological data from an array of automatic weather stations in Antarctica, Greenland, ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]alley_0539578 112.1166,-79.4666,112.1166,-79.4666 2012-08-22T04:00:00Z

This award supports a five-year collaborative project to study the physical-properties of the planned deep ice core and the temperature of the ice in the divide region of the West Antarctic Ice Sheet. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]creyts_0537752 2006-04-01T00:00:00Z 2012-03-31T00:00:00Z 2012-08-10T04:00:00Z

This award supports a project to evaluate radio-echo intensities in the available SOAR ice-penetrating radar data along grids covering Lake Vostok, and along four regional tracks from Ridge B toward ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]creyts_0636584 2007-05-01T00:00:00Z 2012-04-30T00:00:00Z 2012-08-10T04:00:00Z

This award supports a project to estimate the salinity of subglacial Lake Vostok, Lake Concordia and the 90 deg.E lake using existing airborne ice-penetrating radar and laser altimeter data. A change ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]dunbar_0636767 112.11666,-79.46666,112.11666,-79.46666 2007-07-01T00:00:00Z 2012-06-30T00:00:00Z 2012-08-01T04:00:00Z

Visible tephra layers were found in the Byrd Station ice core, the first deep core drilled in Antarctica. Since then, tephra have been found in many other Antarctic ice cores. Tephra layers in ice ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]taylor_0440819 112.1,-79.46667,112.1,-79.46667 2012-07-12T04:00:00Z

This award supports a project that is part of the West Antarctic Ice Sheet Divide (WAIS Divide) program; which is a multi-disciplinary multi-institutional program to investigate the causes of natural ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]price_0738658 112.1125,-79.4638,112.1125,-79.4638 2012-06-29T04:00:00Z

This award supports a project to use two new scanning fluorimeters to map microbial concentrations vs depth in the WAIS Divide ice core as portions of it become available at NICL, and selected portions ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]bay_0739743 123.35,-75.1,123.35,-75.1 2012-06-29T04:00:00Z

This award supports a project to make high-resolution logs of dust and ash in the Dome C borehole using an optical dust logger. The dust logger employs a temperature-regulated diode laser at 404 nm ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]das_0632031 2012-06-22T04:00:00Z

This award supports a project to gather data to better understand the mass balance of the West Antarctic Ice Sheet focusing on the Pine Island and Thwaites Glaciers along the Amundsen Sea coast. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]saltzman_0636953 119.51667,-80.01667,119.51667,-80.01667106.8,-72.46667,106.8,-72.46667148.8,-81.664,148.8,-81.664158.0,-74.666,158.0,-74.666 2012-06-19T04:00:00Z

This award supports a project to measure methyl chloride, methyl bromide, and carbonyl sulfide in air extracted from Antarctic ice cores.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]scambos_0732921 63.0,-65.0,59.0,-60.0 2008-05-01T00:00:00Z 2013-04-30T00:00:00Z 2012-06-18T04:00:00Z

This award supports the cryospheric and oceano-graphic components of an integrated multi-disciplinary program to address these rapid and fundamental changes now taking place in Antarctic Peninsula ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Aydin_0739598 2012-06-04T04:00:00Z

The data file contains ethane, propane, and n-butane measurements in firn air from two Antarctic sites (South Pole and WAIS-D) and from Summit, Greenland. The WAIS-D and South Pole samples were collected ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Gogineni_0631994 -137.0,-80.5,-88.0,-74.0 2009-12-24T00:00:00Z 2010-01-19T00:00:00Z 2012-06-01T04:00:00Z

This award supports a project to gather data to better understand the mass balance of the West Antarctic Ice Sheet, in the Pine Island and Thwaites region, through the combination of radar altimetry ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]brook_0739766 -112.08,-79.47,-112.08,-79.47 2007-03-01T00:00:00Z 2010-02-25T00:00:00Z 2012-05-31T04:00:00Z

These data are a decadally resolved record of atmospheric CO2 concentration for the last 1000 years, obtained from the West Antarctic Ice Sheet (WAIS) Divide shallow ice core.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0283 124.4345,-80.79008,124.52668,-80.77546 2004-01-16T00:00:00Z 2004-11-17T00:00:00Z 2012-05-15T04:00:00Z

The Antarctic megadune research was conducted during two field seasons, one in November 2002 and the other during the period of December 2003 through January 2004. The megadune field site is located ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0032 -180.0,-90.0,180.0,90.0 1987-07-09T00:00:00Z T00:00:00Z 2012-05-15T04:00:00Z

This Level-3 Equal-Area Scalable Earth-Grid (EASE-Grid) Brightness Temperature data set, collected since 09 July 1987, is a part of the NOAA/NASA Pathfinder Program. The data set consists of gridded ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0507 158.25,-76.833336,159.0,-76.666664 1997-12-04T00:00:00Z 2010-12-19T00:00:00Z 2012-05-15T04:00:00Z

This data set includes includes high-precision GPS measurements of steel poles within the Allan Hills Main Ice Field, Near Western Ice Field, and extending to the eastern edge of the Middle Western ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0502 -180.0,-90.0,180.0,-90.0 2008-12-01T00:00:00Z 2009-01-31T00:00:00Z 2012-05-15T04:00:00Z

This data set contains depth profiles for delta carbon-13 (δ13C) and delta deuterium (δD) of methane (CH/4) in South Pole firn air. The investigators obtained air samples from two boreholes ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0436 -119.51667,-80.01667,-119.51667,-80.01667106.8,-72.46667,106.8,-72.46667-38.466667,72.583336,-38.466667,72.583336 1999-01-01T00:00:00Z 2005-12-30T00:00:00Z 2012-05-15T04:00:00Z

This data set contains measurements of impurities and ions in three polar ice cores: the Vostok 5G ice core and the Byrd ice core from Antarctica, and the Greenland Ice Sheet Project 2 (GISP2) D core. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0215 0.0,-90.0,0.0,-90.0 2012-05-15T04:00:00Z

This data set contains concentrations of soluble chemical species (ions) within a 120 m ice core retrieved at the South Pole station in 2001. The ice core was dated with annual resolution using annual ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0094 -180.0,-90.0,180.0,-54.0-180.0,48.0,180.0,90.0 1981-07-24T00:00:00Z 2000-12-31T00:00:00Z 2012-05-14T04:00:00Z

The AVHRR Polar Pathfinder Twice-Daily 25 km EASE-Grid Composites are a collection of products for both poles, consisting of twice-daily gridded and calibrated satellite channel data and derived parameters. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0066 -180.0,-90.0,180.0,-54.0-180.0,48.0,180.0,90.0 1981-07-24T00:00:00Z 2005-06-30T00:00:00Z 2012-05-14T04:00:00Z

The Advanced Very High Resolution Radiometer (AVHRR) Polar Pathfinder Twice-Daily 5 km EASE-Grid Composites are a collection of products for both poles, consisting of twice-daily calibrated and gridded ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0326 160.0,-78.0,163.0,-77.833336 2003-01-01T00:00:00Z 2004-01-01T00:00:00Z 2012-05-14T04:00:00Z

This data set provides glacier surface ablation rates for a network of approximately 250 sites on Taylor Glacier, for year 2003. Here sublimation is the dominant ablation mechanism, though a few sites ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0072 -141.0,41.0,-52.0,84.0 1874-01-01T00:00:00Z 1990-12-31T00:00:00Z 2012-05-14T04:00:00Z

This data set was distributed by NSIDC until October, 2003, when it was withdrawn from distribution because it duplicates the NOAA National Climatic Data Center (NCDC) data set TD-9816 'Canadian Monthly ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0504 0.0,-90.0,0.0,-90.0112.09,-79.47,112.09,-79.47-38.3833,72.5833,-38.3833,72.5833 2005-12-01T00:00:00Z 2006-01-31T00:00:00Z 2006-06-01T00:00:00Z 2006-09-01T00:00:00Z 2008-12-01T00:00:00Z 2009-01-31T00:00:00Z 2012-05-14T04:00:00Z

This data set contains ethane, propane, and n-butane measurements in firn air from the South Pole and the West Antarctic Ice Sheet (WAIS) Divide in Antarctica, and from Summit, Greenland. The WAIS ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0318 -180.0,-90.0,180.0,-65.0 1957-01-01T00:00:00Z 2003-12-31T00:00:00Z 2012-05-14T04:00:00Z

The Mean Annual Temperature map was calculated by creating a contour map using compiled 10 meter firn temperature data from NSIDC and other mean annual temperature data from both cores and stations. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0201 -148.8,-81.7,-148.8,-81.7 2002-09-01T00:00:00Z 2003-11-30T00:00:00Z 2012-05-14T04:00:00Z

This data set is a continuous, high-resolution record of biogenic sulfur (methanesulfonate, known as MSA and CH3SO3-) in the 1000 m deep Siple Dome A (SDMA) core, covering 100,000 to 20 years BP. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0079 -180.0,-90.0,180.0,-39.0-180.0,30.0,180.0,90.0 1978-10-26T00:00:00Z T00:00:00Z 2012-05-14T04:00:00Z

This sea ice concentration data set was derived using measurements from the Scanning Multichannel Microwave Radiometer (SMMR) on the Nimbus-7 satellite and from the Special Sensor Microwave/Imager ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0310 -148.3023,-81.403,-148.3023,-81.403 1995-01-01T00:00:00Z 1995-01-31T00:00:00Z 2001-01-01T00:00:00Z 2001-01-31T00:00:00Z 2012-05-14T04:00:00Z

This data set includes records of the delta carbon-13 (?13C) of methane (CH4) in firn air from the South Pole and trapped in bubbles in a short ice core from Siple Dome, Antarctica. Using two firn ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0466 -60.0,-80.0,-15.0,-47.0 2006-03-05T00:00:00Z 2006-11-02T00:00:00Z 2006-03-19T00:00:00Z 2007-01-15T00:00:00Z 2012-05-14T04:00:00Z

This data set includes a variety of station data from two Antarctic icebergs. In 2006, researchers installed specialized weather stations called Automated Meteorological Ice Geophysical Observing ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0274 -158.0,-84.0,-134.0,-81.0 2000-11-11T00:00:00Z 2000-12-07T00:00:00Z 2002-01-03T00:00:00Z 2002-01-28T00:00:00Z 2012-05-14T04:00:00Z

These data consist of ground-based, ice-penetrating radar profiles across satellite-detected lineations and terrains that were taken in the lower reaches of Ross Ice Stream C, also known as the Kamb ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0001 -180.0,-90.0,180.0,-39.0-180.0,30.0,180.0,90.0 1987-07-09T00:00:00Z T00:00:00Z 2012-05-14T04:00:00Z

NSIDC produces daily gridded brightness temperature data from orbital swath data generated by the Special Sensor Microwave/Imager (SSM/I) aboard the Defense Meteorological Satellite Program (DMSP) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0464 -180.0,-90.0,180.0,-39.0-180.0,30.0,180.0,90.0 1995-01-01T00:00:00Z 2008-12-31T00:00:00Z 2002-01-01T00:00:00Z 2009-01-01T00:00:00Z 2012-05-14T04:00:00Z

Notice to data users: The AMSR-E 89.0 GHz data provided here are currently at 12.5 km resolution, in 1441x1441 arrays. Updated, enhanced AMSR-E 89.0 GHz data will replace the 12.5 km data as soon ...