Sentences with phrase «ice thickness data from»

Wadhams has spent many years collecting ice thickness data from submarines passing below the arctic ocean.

Johannes Fürst, a researcher at the University of Erlangen - Nuremberg's Institute of Geography in Germany, and colleagues report in Nature Climate Change that they analysed years of ice thickness data from European Space Agency satellites and airborne measurements.

NASA Icebridge - Snow depth and sea ice thickness data from the Quick Look data product.

As in 2012, sea ice thinning and not just anomalous weather should contribute to September 2013 sea ice loss (see the discussion of the IceBridge sea ice thickness data from the June Report).

Millan, a UCI graduate student researcher in Earth system science, and his colleagues analyzed 20 major outlet glaciers in southeast Greenland using high - resolution airborne gravity measurements and ice thickness data from NASA's Operation IceBridge mission; bathymetry information from NASA's Oceans Melting Greenland project; and results from the BedMachine version 3 computer model, developed at UCI.

Not exact matches

The study uses data from two NASA missions — Operation IceBridge, which measures ice thickness and gravity from aircraft, and Oceans Melting Greenland, or OMG, which uses sonar and gravity instruments to map the shape and depth of the seafloor close to the ice front.

Initial interpretations of data from Cassini flybys of Enceladus estimated that the thickness of its ice shell ranged from 30 to 40 km at the south pole to 60 km at the equator.

Using all available geologic, tectonic and geothermal heat flux data for Greenland — along with geothermal heat flux data from around the globe — the team deployed a machine learning approach that predicts geothermal heat flux values under the ice sheet throughout Greenland based on 22 geologic variables such as bedrock topography, crustal thickness, magnetic anomalies, rock types and proximity to features like trenches, ridges, young rifts, volcanoes and hot spots.

The researchers combined data gathered from the buoys between 2002 and 2015 with satellite estimates of ice thickness in this region to better understand changes affecting the Arctic Ocean in recent years.

Khan and his colleagues combined GNET data with ice thickness measurements taken by four different satellites: the Airborne Topographic Mapper (ATM), the Ice, Cloud and Land Elevation Satellite (ICESat), and the Land, Vegetation and Ice Sensor (LVIS) from NASA; and the Environmental Satellite (ENVISAT) from the European Space Agenice thickness measurements taken by four different satellites: the Airborne Topographic Mapper (ATM), the Ice, Cloud and Land Elevation Satellite (ICESat), and the Land, Vegetation and Ice Sensor (LVIS) from NASA; and the Environmental Satellite (ENVISAT) from the European Space AgenIce, Cloud and Land Elevation Satellite (ICESat), and the Land, Vegetation and Ice Sensor (LVIS) from NASA; and the Environmental Satellite (ENVISAT) from the European Space AgenIce Sensor (LVIS) from NASA; and the Environmental Satellite (ENVISAT) from the European Space Agency.

Level 2 data represent geolocated geophysical properties (e.g ice thickness), derived from Level 1B measurements (e.g. radar echo delay).

Antarctic ice shelf thickness changes calculated from ICEsat data.

First, we expect the ice thickness distribution in April 30 from redistribution (divergence / convergence) of sea ice during December and April, based on the daily ice velocity data.

Finnish Meteorological Institute has been doing estimates of two essential sea ice parameters — namely, sea ice concentration (SIC) and sea ice thickness (SIT)-- for the Bohai Sea using a combination of a thermodynamic sea ice model and Earth observation (EO) data from synthetic aperture radar (SAR) and microwave radiometer.

At FMI algorithms and procedures have been developed for producing daily thin ice thickness (< 0.5 m) charts for the Arctic in wintertime based on ice surface temperature which is retrieved from the thermal infrared data of the MODIS spectrometer.

The team, which Marc led and provided the logistical support for, deployed from Resolute to Nord Greenland before setting up a rustic field camp on the sea ice for six days, during which time we mechanically drilled the ice to measure thickness, measuring snow depth in a grid pattern along the flight lines as well as dragging instruments along the surface that produced the same measurements for comparison to the airborne data.

At FMI algorithms and procedures have been developed for producing daily thin ice thickness (< 0.5 m) charts for the Arctic in wintertime based on ice surface temperature which is retrieved from the thermal infrared data of the MODIS spectrometer.

The most recent ice data, 10 June 2013, from a SAMS ice mass balance buoy installed in the fast ice in Inglefieldbukta (N 77 ° 54», E 18 ° 17») reported an ice thickness of about 88 cm and snow depth 20 cm.

IceBridge data are collected from aircraft that fly over the ice cover carrying a suite of instruments, including altimeters that can directly measure ice thickness above the surface.

Advance methods to produce freeboard and sea ice thickness profiles from radar altimeter (RA) data.

Scientists from the University of Erlangen - Nuremberg Institute of Geography and from the Laboratoire de Glaciologie et Gophysique de l'Environnement in Grenoble, France, used radar data from satellites such as ESA's Envisat and observations of ice thickness from airborne surveys in a complex model to demonstrate, for the first time, how the buttressing role of the ice shelves is being compromised as the shelves decline.

Further: We calculate Arctic sea ice thickness and volume values from the standard, publically available CryoSat data as well as from near real time (NRT) CryoSat data provided directly to us from the European Space Agency.

However, our monthly sea ice volumes calculated from NRT and standard data agree to within 0.5 % on average, which shows that the NRT data allow us provide users with a reliable operational thickness and volume product.

«IceBridge has collected so much data on elevation and thickness that we can now do analysis down to the individual glacier level and do it for the entire ice sheet,» said Michael Studinger, IceBridge project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md. «We can now quantify contributions from the different processes that contribute to ice loss.»

Researchers used data from IceBridge's ice - penetrating radar — the Multichannel Coherent Radar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velociice - penetrating radar — the Multichannel Coherent Radar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velociIce Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velociice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velocity.

The ensemble consists of seven members each of which uses a unique set of NCEP / NCAR atmospheric forcing fields from recent years, representing recent climate, such that ensemble member 1 uses 2005 NCEP / NCAR forcing, member 2 uses 2006 forcing..., and member 7 uses 2011 forcing... In addition, the recently available IceBridge and helicopter - based electromagnetic (HEM) ice thickness quicklook data are assimilated into the initial 12 - category sea ice thickness distribution fields in order to improve the initial conditions for the predictions.

Here, thickness data, which are sorely lacking but available in a few locations as the result of International Polar Year efforts and from satellite - derived estimates of ice age or type, constrain modeled thickness distributions.

Kaleschke and Rickert provided an estimate of the difference between March 2013 and March 2012 ice thickness based on preliminary data from the European Space Agency's satellites CryoSat - 2 and SMOS (Figure 6).

To determine how much ice and snowfall enters a specific ice shelf and how much makes it to an iceberg, where it may split off, the research team used a regional climate model for snow accumulation and combined the results with ice velocity data from satellites, ice shelf thickness measurements from NASA's Operation IceBridge — a continuing aerial survey of Earth's poles — and a new map of Antarctica's bedrock.

These missions - satellite radar altimetry projects overseen by the European Space Agency (ESA)- lasted from 1994 to 2012, providing the researchers plenty of data that could even be overlapped and compared to ensure an accurate assessment of ice shelf thickness for more than a decade.

We appreciate the addition of recent ice thickness data estimated from the European Space Agency CryoSat - 2 satellite, the NASA IceBridge airborne campaign, and Office of Naval Research (ONR) Marginal Ice Zone Program buoice thickness data estimated from the European Space Agency CryoSat - 2 satellite, the NASA IceBridge airborne campaign, and Office of Naval Research (ONR) Marginal Ice Zone Program buoIce Zone Program buoys.

CryoSat was launched in 2010 to measure sea - ice thickness in the Arctic, but data from the Earth - observing satellite have also been exploited for other studies.

That is the discovery made by scientists using data from CryoSat - 2, the European probe that has been measuring the thickness of Earth's ice sheets and glaciers since it was launched by [continue reading...]

Until then, we have some new observational data of Canadian sea ice thickness and this remarkable figure of sea ice volume since 1979 from Neven's Arctic Sea Ice Blog, based on data from the University of Washington's Polar Science Center [click to enlargice thickness and this remarkable figure of sea ice volume since 1979 from Neven's Arctic Sea Ice Blog, based on data from the University of Washington's Polar Science Center [click to enlargice volume since 1979 from Neven's Arctic Sea Ice Blog, based on data from the University of Washington's Polar Science Center [click to enlargIce Blog, based on data from the University of Washington's Polar Science Center [click to enlarge]:

By comparing measurements of ice thickness between 1958 and 1976 with data from 1993 and 1997, he determined that the thickness had decreased from 10.2 feet in the early period to 5.9 feet in the 1990's.

* To the right is an example of a data table taken from the IceBridge MCoRDS L2 Ice Thickness data set

Combined data sets of draft and thickness from submarine sonars, satellite altimetry and airborne electromagnetic sensing provide broadly consistent and strong evidence of decrease in Arctic sea ice thickness in recent years.

Using Envisat radar altimeter data, scientists from the Centre for Polar Observation and Modelling at University College London (UCL) measured sea ice thickness over the Arctic from 2002 to 2008 and found that it had been fairly constant until the record loss of ice in the summer of 2007.

The team established a group of un-manned scientific platforms, collectively called an observatory, to record data throughout the remainder of the year on everything from the salinity of the water to the thickness and temperature of the ice cover.

This is done by using elevation data from the European Space Agency's CryoSat - 2 and applying Archimedes's principle of buoyancy, which relates the thickness of floating ice to the height of its surface.