Search Results - "Zwally, H J"
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Thinning and volume loss of the Arctic Ocean sea ice cover: 2003–2008
Published in Journal of Geophysical Research - Oceans (01-07-2009)“…We present our best estimate of the thickness and volume of the Arctic Ocean ice cover from 10 Ice, Cloud, and land Elevation Satellite (ICESat) campaigns that…”
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Overview of the ICESat Mission
Published in Geophysical research letters (01-11-2005)“…The Geoscience Laser Altimeter System (GLAS) on the NASA Ice, Cloud and land Elevation Satellite (ICESat) has provided a view of the Earth in three dimensions…”
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3
Recent Greenland Ice Mass Loss by Drainage System from Satellite Gravity Observations
Published in Science (American Association for the Advancement of Science) (24-11-2006)“…Mass changes of the Greenland Ice Sheet resolved by drainage system regions were derived from a local mass concentration analysis of NASA-Deutsches Zentrum für…”
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Ice, Cloud, and land Elevation Satellite (ICESat) over Arctic sea ice: Retrieval of freeboard
Published in Journal of Geophysical Research - Oceans (01-12-2007)“…Total freeboard (snow and ice) of the Arctic Ocean sea ice cover is derived using Ice, Cloud, and land Elevation Satellite (ICESat) data from two 35‐day…”
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ICESat Antarctic elevation data: Preliminary precision and accuracy assessment
Published in Geophysical research letters (01-04-2006)“…Since ‘first light’ on February 20th, 2003, NASA's Ice, Cloud, and land Elevation Satellite (ICESat) has derived surface elevations from ∼86°N to 86°S…”
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Five years of Arctic sea ice freeboard measurements from the Ice, Cloud and land Elevation Satellite
Published in Journal of Geophysical Research - Oceans (01-04-2009)“…Using data from the first Earth‐orbiting laser altimeter, the Geoscience Laser Altimeter System (GLAS), onboard the Ice, Cloud and land Elevation Satellite…”
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Persistent surface snowmelt over Antarctica (1987–2006) from 19.35 GHz brightness temperatures
Published in Geophysical research letters (01-09-2007)“…Persistent melting (e.g., continuing for more than three days or for one consecutive day and night) is mapped in Antarctica (1987–2006) using night‐ and…”
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ICESat over Arctic sea ice: Interpretation of altimetric and reflectivity profiles
Published in Journal of Geophysical Research - Oceans (01-06-2006)“…We provide an assessment of the ICESat altimeter for studying the Arctic Ocean and examine the magnitude of the large‐ and small‐scale expressions of…”
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9
Gravity of the Arctic Ocean from satellite data with validations using airborne gravimetry: Oceanographic implications
Published in Journal of geophysical research. Oceans (01-02-2013)“…Precise mappings of sea surface topography, slope, and gravity of the Arctic Ocean are derived from altimeter data collected by Envisat and ICESat. Both…”
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10
Deriving long-term time series of sea ice cover from satellite passive-microwave multisensor data sets
Published in Journal of Geophysical Research, Washington, DC (15-07-1999)“…We have generated consistent sea ice extent and area data records spanning 18.2 years from passive‐microwave radiances obtained with the Nimbus 7 scanning…”
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Observed Hemispheric Asymmetry in Global Sea Ice Changes
Published in Science (American Association for the Advancement of Science) (07-11-1997)“…From November 1978 through December 1996, the areal extent of sea ice decreased by 2.9 ± 0.4 percent per decade in the Arctic and increased by 1.3 ± 0.2…”
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Topography of the Northern Hemisphere of Mars from the Mars Orbiter Laser Altimeter
Published in Science (American Association for the Advancement of Science) (13-03-1998)“…The first 18 tracks of laser altimeter data across the northern hemisphere of Mars from the Mars Global Surveyor spacecraft show that the planet at latitudes…”
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13
Statistical modeling of a former Arctic Ocean ice shelf complex using Antarctic analogies
Published in Journal of geophysical research. Earth surface (01-06-2013)“…Geophysical mapping and coring of the central Arctic Ocean seafloor provide evidence for repeated occurrences of ice sheet/ice shelf complexes during previous…”
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14
Surface Melt-Induced Acceleration of Greenland Ice-Sheet Flow
Published in Science (American Association for the Advancement of Science) (12-07-2002)“…Ice flow at a location in the equilibrium zone of the west-central Greenland Ice Sheet accelerates above the midwinter average rate during periods of summer…”
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15
Growth of Greenland Ice Sheet: Measurement
Published in Science (American Association for the Advancement of Science) (22-12-1989)“…Measurements of ice-sheet elevation change by satellite altimetry show that the Greenland surface elevation south of 72 degrees north latitude is increasing…”
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Precision and Accuracy of Satellite Radar and Laser Altimeter Data Over the Continental Ice Sheets
Published in IEEE transactions on geoscience and remote sensing (01-02-2007)“…The unprecedented accuracy of elevations retrieved from the Ice Cloud and Land Elevation Satellite (ICESat) laser altimeter is investigated and used to…”
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Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars
Published in Journal of Geophysical Research (25-10-2001)“…The Mars Orbiter Laser Altimeter (MOLA), an instrument on the Mars Global Surveyor spacecraft, has measured the topography, surface roughness, and 1.064‐μm…”
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ICESat's laser measurements of polar ice, atmosphere, ocean, and land
Published in Journal of geodynamics (01-10-2002)“…The Ice, Cloud and Land Elevation Satellite (ICESat) mission will measure changes in elevation of the Greenland and Antarctic ice sheets as part of NASA's…”
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Sea-ice thickness distribution of the Bellingshausen Sea from surface measurements and ICESat altimetry
Published in Deep-sea research. Part II, Topical studies in oceanography (01-05-2011)“…Although sea-ice extent in the Bellingshausen-Amundsen (BA) seas sector of the Antarctic has shown significant decline over several decades, there is not…”
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Variability of Antarctic sea ice 1979–1998
Published in Journal of Geophysical Research - Oceans (01-05-2002)“…The principal characteristics of the variability of Antarctic sea ice cover as previously described from satellite passive microwave observations are also…”
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