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51. Aerogeophysical survey of western Marie Byrd Land, Antarctica [SOAR1999WMB]
An aerogeophysical survey of the western Marie Byrd Land region of Antarctica was flown in Dec. 1998-Jan. 1999, measuring surface and base of ice elevation by radar and strength ...


52. Airborne Laser Altimetry of the Thwaites Glacier Catchment, West Antarctica [NSIDC-0334_1]
This data set includes airborne altimetry collected over the catchment and main trunk of Thwaites Glacier, one of Antarctica's most active ice streams. The airborne altimetry comprises 35,000 line-kilometers ...


53. Airborne Radar-Derived Accumulation Rates over Pine Island and Thwaites Glaciers [joughin_0631973]
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 ...


54. Alkanes in Firn Air Samples, Antarctica and Greenland [NSIDC-0504_1]
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 ...


55. Allan Hills Stable Water Isotopes [NSIDC-0541_1]
This data set includes stable water isotope values at 10 m resolution along an approximately 5 km transect through the main icefield of the Allan Hills Blue Ice Area, and at 15 cm within a 225 m ...


56. Amundsen Sea Sector Data Set [NSIDC-0312_1]
This data set includes a nested model, that starts at low resolution for the whole Antarctic Ice Sheet, and then embeds higher resolution data at limited domains. There are at least three levels of ...


57. An Investigation into the Seismic Signatures Generated by Iceberg Calving and Rifting [fricker_0739769]
This award supports a project to strengthen collaborations between the various research groups working on iceberg calving. Relatively little is known about the calving process, especially the physics ...


58. Analysis of Siple Dome Ice Core: Carbonyl Sulfide (COS), Methyl Chloride (CH3Cl), and Methyl Bromide (CH3Br) [NSIDC-0279_1]
This data set is part of the WAISCORES (West Antarctic Ice Sheet cores) project, research funded by the National Science Foundation (NSF) and designed to improve understanding of how the West Antarctic ...


59. Anisotropy, Abrupt Climate Change, and the Deep Ice in West Antarctica [waddington_0636996]
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 ...


60. Annual Layers at Siple Dome, Antarctica, from Borehole Optical Stratigraphy [NSIDC-0515_1]
Researchers gathered data on annual snow layers at Siple Dome, Antarctica, using borehole optical stratigraphy. This data set contains annual layer depths and firn optical brightness. The brightness ...


61. Antarctic Aerogeophysics Data [NSIDC-0240_1]
The data that the Support Office for Aerogeophysical Research (SOAR) provides include various aerogeophysical measurements taken in the West Antarctic Ice Shelf (WAIS) from 1994 to 2001. The instruments ...


62. Antarctic Ice Cores: Methyl Chloride and Methyl Bromide [NSIDC-0313_1]
This data set is an analysis of methyl chloride (CH3Cl) and methyl bromide (CH3Br) in Antarctic ice core samples. Investigators reported mixing ratios of methyl chloride gas extracted from samples ...


63. Antarctic Mean Annual Temperature Map [NSIDC-0318_1]
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. ...


64. Antarctic Peninsula 100 m Digital Elevation Model Derived from ASTER GDEM [NSIDC-0516_1]
This data set provides a 100 meter resolution surface topography Digital Elevation Model (DEM) of the Antarctic Peninsula. The DEM is based on Advanced Spaceborne Thermal Emission and Reflection Radiometer ...


65. Antarctic Radar Echograms and Derived Ice Thickness Data from CReSIS [NSIDC-0414_1]
The Center for Remote Sensing of Ice Sheets (CReSIS) data from the 2002 and 2006 Flight missions. Basic Processing has been done to obtain the radar echograms and derived ice thickness data. Algorithms ...


66. Antarctic Subglacial Lake Classification Inventory [NSIDC-0336_1]
This data set is an Antarctic radar-based subglacial lake classification collection, which focuses on the radar reflection properties of each given lake. The Subglacial lakes are separated into four ...


67. Antarctic and Greenland Climate Change Comparison [NSIDC-0253_1]
This data set compares global atmospheric concentration of methane from ice cores taken on the ice sheets of Antarctica and Greenland. The data come from multiple ice cores on each continent, including ...


68. Atmospheric CO2 Trapped in the Ice Core from Siple Dome, Antarctica [NSIDC-0202_1]
These data are CO2 concentrations of the air occulded in Siple Dome ice core, Antarctica. The study was conducted between January 2001 and March 2003 on a deep ice core from Siple Dome Core A, located ...


69. Atmospheric CO2 and Climate: Byrd Ice Core, Antarctica [NSIDC-0314_1]
Reconstructions of ancient atmospheric CO2 variations help us better understand how the global carbon cycle and climate are linked. This data set compares CO2 variations on millennial time scales ...


70. Atmospheric CO2 and Climate: Taylor Dome Ice Core, Antarctica [NSIDC-0315_1]
Using new and existing ice core CO2 data from 65 - 30 ka BP a new chronology for Taylor Dome ice core CO2 is established and synchronized with Greenland ice core records to study how high latitude ...


71. Atmospheric CO2 over the last 1000 years: A record from the WAIS Divide ice core [brook_0739766]
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.


72. Atmospheric Mixing Ratios of Hydroperoxides above the West Antarctic Ice Sheet [NSIDC-0394_1]
This data set contains atmospheric mixing ratios of hydrogen peroxide and methylhydroperoxide at 21 sites on the West Antarctic Ice Sheet (WAIS) were obtained from 2000 to 2003 during the US International ...


73. Atmospheric Nitrate Isotopic Analysis at Amundsen-Scott South Pole Station, A Twenty-Five Year Record [NSIDC-0281_1]
This data set contains snow pit measurements of oxygen isotopes, 17O and 18O, in nitrate and ion concentrations, and surface measurements of oxygen isotopes in nitrate and in ...


74. Atmospheric hydroperoxides, formaldehyde and ozone in West Antarctica during summers 2000-2002 [ITASE_UCM_ATMOCHEM]
This data set consists of atmospheric observations of chemical trace gas species and meteorological parameters gathered on three 2-month-long ground traverses across the West Antarctic ...


75. Atmospheric, Snow and Firn Chemistry Studies for Interpretation of WAIS-Divide Cores, Antarctica [bales_0636929]
This award supports a project to understand how recent changes in atmospheric chemistry, and historical changes as recorded in snow, firn and ice, have affected atmospheric photochemistry over Antarctica. ...


76. Average Annual Layer Thickness of the WAIS Divide Ice Core from Visual Stratigraphy [NSIDC-0603_1]
This data set includes ~50 m averaged annual layer thicknesses down to 3403 m depth at the West Antarctic Ice Sheet (WAIS) Divide ice core as observed visually using diffuse transmitted light opposite ...


77. Biogenic Sulfur in the Siple Dome Ice Core [NSIDC-0201_1]
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. ...


78. Borehole Optical Stratigraphy Modeling, Antarctica [NSIDC-0468_1]
This data set consists of scripts and code designed for modeling the properties of boreholes in polar ice sheets, under a range of variations in the borehole geometry, firn layering, and camera pointing ...


79. Borehole Optical Stratigraphy at Siple Dome [UW_BOS_SDM]
This data set contains the Borehole Optical Stratigraphic (BOS) profile for a borehole (designated K) approximately 50 M from the main borehole at Siple Dome, West Antarctica. BOS is ...


80. Borehole Optical Stratigraphy: Ice Microphysics, Climate Change, and the Optical Properties of Firn [waddington_0335330]
This award supported a study of the physical nature and environmental origin of optical features (light and dark zones) observed by video in boreholes in polar ice. These features appear to include ...


81. Borehole Temperature Measurement in WDC05A in January 2008 and January 2009 [NSIDC-0637_1]
This data set includes borehole temperature measurements performed in January 2008 and January 2009 at the West Antarctic Ice sheet divide from the 300 m hole WDC05A.


82. Borehole Temperatures at Pine Island Glacier, Antarctica [NSIDC-0627_1]
This data set is a time series of borehole temperatures at different depths from three thermistor strings deployed in three boreholes drilled through the Pine Island Glacier ice shelf, Antarctica.


83. Bubble Number-density Data and Modeled Paleoclimates [NSIDC-0538_1]
This data set includes bubble number-density measured at depths from 120 meters to 560 meters at 20-meter intervals in both horizontal and vertical samples. The data set also includes modeled temperature ...


84. Byrd Ice Core Microparticle and Chemistry Data [NSIDC-0247_1]
This data set consists of microparticle and chemistry data from Byrd Ice Core, the first ice core to reach bedrock in Antarctica. The core was drilled with a cable-suspended electromechanical rotary ...


85. CFA-TE data for upper siple dome ice core [NSF0126286]
Continuous, broad spectrum elemental and chemical data measured on the upper 54 m of the primary Siple Dome Ice Core. Continuous Flow Analyses with Trace Metals (CFA-TE) was used to develop ...


86. COLLABORATIVE RESEARCH: Elevation Change Anomalies in West Antarctica and Dynamics of Subglacial Water Transport Beneath Ice Streams and their Tributaries [tulaczyk0636970]
We performed field and remote sensing investigations of Elevation Change Anomalies (henceforth ECAs) discovered recently in the Ross Sea sector of the West Antarctic Ice Sheet (WAIS) (Gray et al., ...


87. COLLABORATIVE RESEARCH; IPY: Ocean-Ice Interaction in the Amundsen Sea sector of West Antarctica [Bindschadler_0732906]
Collaborative With: McPhee 0732804, Holland 0732869, Truffer 0732730, Stanton 0732926, Anandakrishnan 0732844 Title: Collaborative Research: IPY: Ocean-Ice Interaction in the Amundsen Sea Sector ...


88. Carbon-13 Isotopic Composition of Atmospheric Methane in Firn Air, South Pole and Siple Dome, Antarctica [NSIDC-0310_1]
This data set includes records of the delta carbon-13 (δ13C) of methane (CH4) in firn air from the South Pole and trapped in bubbles in a short ice core from Siple Dome, ...


89. Carbonyl Sulfide Measurements in the Taylor Dome M3C1 Ice Core [NSIDC-0599_1]
The data set includes carbonyl sulfide (COS) measurements made on air extracted from 53 samples from the Taylor Dome M3C1 ice core. COS was measured in air from the Taylor Dome ice core to reconstruct ...


90. Central West Antarctic Glaciochemistry from Ice Cores [NSIDC-0093_1]
Glaciochemical and accumulation rate records developed from four ice cores in central West Antarctica are used to reconstruct former atmospheric circulation patterns in this region for the last 40 ...


91. Climate, Drift, and Image Data from Antarctic Icebergs A22A and UK211, 2006-2007 [NSIDC-0466_1]
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 ...


92. Climatology, Meteorology, and Microbial Metabolism in Ice with Dust Loggers and Fluorimetry [price_0738658]
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 ...


93. Climatology, Volcanism, and Microbial Life in Ice with Downhole Loggers [price_0440609]
This award supports a project to use two spectrofluorimeters - one with a 224-nm laser to excite protein fluorescence and non-protein aerosol and dust fluorescence, and the other with a 404-nm laser ...


94. Coastal and Terminus History of the Eastern Amundsen Sea Embayment, West Antarctica, 1972 - 2011 [NSIDC-0522_1]
This data set provides a coastline history of the eastern Amundsen Sea Embayment and terminus histories of its outlet glaciers derived from those coastlines. These outlet glaciers include Smith, Haynes, ...


95. Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Cryosphere and Oceans [scambos_0732921]
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 ...


96. Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans - LARISSA_0732655 [LARISSA_0732655]
Like no other region on Earth, the northern Antarctic Peninsula represents a spectacular natural laboratory of climate change and provides the opportunity to study the record of past climate and ecological ...


97. Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans - truffer_0732602 [truffer_0732602]
This award supports the cryospheric and oceanographic components of an integrated multi-disciplinary program to address the rapid and fundamental changes now taking place in Antarctic Peninsula (AP). ...


98. Collaborative Research, IPY The Next Generation: A Community Ice Sheet Model for scientists and educators [hulbe_0632168]
Predictive modeling experiments on the Amundsen Sea Embayment region of Antarctica with the goal of understanding how interactions between basal processes and ice sheet dynamics can result in abrupt ...


99. Collaborative Research: Anisotropy, Abrupt Climate Change, and the Deep Ice in West Antarctica [pettit_0940650]
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 ...


100. Collaborative Research: Characteristics of Snow Megadunes and their Potential Effects on Ice Core Interpretation [scambos_0125570]
Field study and remote sensing measurements of an area of snow megadunes on the East Antarctic plateau provides a preliminary assessment of dune morphology, firn structure, and layering ...


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