Sea ice volume measurements, which
take ice thickness into account, also hit a record low this year.
Sea ice volume measurements, which
take ice thickness into account, also hit a record low this year.
Not exact matches
Researchers from Norway and China have collaborated on developing an autonomous buoy with instruments that can more precisely measure the optical properties of Arctic sea
ice while also
taking measurements of
ice thickness and temperature.
Together with his AWI colleague Dr Stefan Hendricks, they evaluated the sea
ice thickness measurements
taken over the past five winters by the CyroSat - 2 satellite for their sea
ice projection.
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 Agen
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 Agen
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 Agen
Ice Sensor (LVIS) from NASA; and the Environmental Satellite (ENVISAT) from the European Space Agency.
One example offered in their paper is typical: On Oct 3, 2015, an NSF / NCAR research aircraft
took off from southern Chile and flew south to measure the
thickness of the Antarctic
ice shelf.
The second Belgian Antarctic Research Expedition (Belare 2005) visited the base construction site in Utsteinen Nunatak to
take additional topographic and
ice thickness measurements and to refurbish the Automatic Weather Station...
Given that there this much work about sea
ice which will
take a while to resolve, there is another method of sensing its decline, another equation like the one giving
ice thickness which has nothing to do with looking at the sea.
Instead, a rather casual article in the Independent showed the latest
thickness data and that quoted Mark Serreze as saying that the area around the North Pole had 50/50 odds of being completely
ice free this summer, has
taken off across the media.
This thicker multiyear
ice takes longer to melt back (both because of greater
thickness and higher albedo than first - year
ice) and so in conjunction with the weather it is responsible for more extensive
ice in the late summer in this region.
Even if the subs up there
took constant
ice thickness measurements, it would still be an incomplete picture, a series of snap shot pictues of local conditions, which wouldn't sum to big picture measurement of total
ice volume.
They
took samples of the
ice and measured its
thickness, temperature and salinity.
So, prompted by reports of the heaviest sea
ice conditions on the East Coast «in decades» and news that
ice on the Great Lakes is, for mid-April, the worst it's been since records began, I
took a close look at
ice thickness charts for the Arctic.
* To the right is an example of a data table
taken from the IceBridge MCoRDS L2
Ice Thickness data set
By comparing changes in
ice thickness taken in 1999 to measurements made earlier in the decade, they concluded that the continent is giving up nearly 50 gigatons — that s 50 billion tons — of water per year, with greatest losses coming from the eastern coast.