It is not clear whether this difference is also connected to the comparatively high prediction for September
ice extent by Kauker et al.'s group; the October retrospective analysis will provide more insight into that question.
A neural network approach was used to predict the September sea
ice extent by the use of two state variables, the surface air temperature of the northern hemisphere from NCEP reanalysis and the September sea ice extent of the previous year.
It appears that initially, the low pressure system slowed the drop in
ice extent by promoting ice divergence.
Have you looked at what
the ice extent by Jaxa is doing lately, the record freeze has slowed down a lot, it is down to third lowest for the current date.
An overall warming in the 2 × CO2 experiment causes reduction of sea -
ice extent by 15 %, with maximum decrease in summer and autumn, consistent with observed seasonal sea - ice changes.
Results showed the storm caused the sea ice to pass the previous record 10 days earlier in August than it would have otherwise, but only reduced the final September
ice extent by 150,000 square kilometers (almost 60,000 square miles), less than a 5 percent difference.
Sea ice extent for September for 2007 was by far the lowest on record at 4.28 million square kilometers, eclipsing the previous record low sea
ice extent by 23 %.»
Not exact matches
They celebrated that night
by taking in the Ringling Brothers Circus at the nearby New York State Fairgrounds, broke training to the
extent of one
ice cream cone apiece, and left the tent at 9, with many a backward look at the three rings going full blast.
If the planet is covered
by an immense amount of water, the pressure at the bottom of the ocean will increase to such an
extent that water occurs in the form of «
Ice VII,» which does not exist on Earth.
«This shift is characterized
by the persistent decline in the thickness and summer
extent of sea -
ice cover and
by a warmer, l
The new Arctic Now product developed
by the Finnish Meteorological Institute shows with one picture the
extent of the area in the Northern Hemisphere currently covered
by ice and snow.
Now, a new study led
by Colorado State University provides important details on the
extent of sea
ice, which can protect
ice shelves from the impacts of ocean storms, in the Antarctic Peninsula.
This was the largest August Antarctic sea
ice extent since records began in 1979, surpassing the previous record large August sea
ice extent that occurred in 2013
by about 90,000 square miles.
An image of an area of the Arctic sea
ice pack well north of Alaska, captured by the MODIS instrument on NASA's Aqua satellite on Sept. 13, 2013, the day before the National Snow and Ice Data Center estimated Arctic sea ice to have reached its minimum extent for the ye
ice pack well north of Alaska, captured
by the MODIS instrument on NASA's Aqua satellite on Sept. 13, 2013, the day before the National Snow and
Ice Data Center estimated Arctic sea ice to have reached its minimum extent for the ye
Ice Data Center estimated Arctic sea
ice to have reached its minimum extent for the ye
ice to have reached its minimum
extent for the year.
The summer minimum Arctic sea
ice extent has decreased
by 40 percent during the same time period.
The Arctic's sea
ice maximum
extent has dropped
by an average of 2.8 percent per decade since 1979, the year satellites started measuring sea
ice.
And on the opposite side of the planet, on March 3 sea
ice around Antarctica hit its lowest
extent ever recorded
by satellites at the end of summer in the Southern Hemisphere, a surprising turn of events after decades of moderate sea
ice expansion.
Long - term predictions of summer Arctic
extent made
by global climate models (GCMs) suggest that the downward trend will likely lead to an
ice - free Arctic summer in the middle of the century.
The findings suggest the latitude of the Atlantic jet stream in summer is influenced
by several factors including sea surface temperatures, solar variability, and the
extent of Arctic sea -
ice, indicating a potential long - term memory and predictability in the climate system.
In contrast, the Scripps team opted to directly correlate albedo measurements made
by NASA's CERES instrument data with observations of sea
ice extent made
by the Special Sensor Microwave Imager (SSM / I) radiometers aboard Defense Meteorological Satellite Program satellites.
Antarctic sea
ice saw an early maximum
extent in 2016, followed
by a very rapid loss of
ice starting in early September.
The model correctly predicted the
extent of the resulting Arctic
ice melt, enough to raise sea levels
by roughly nine feet.
Complementary analyses of the surface mass balance of Greenland (Tedesco et al, 2011) also show that 2010 was a record year for melt area
extent... Extrapolating these melt rates forward to 2050, «the cumulative loss could raise sea level
by 15 cm
by 2050 ″ for a total of 32 cm (adding in 8 cm from glacial
ice caps and 9 cm from thermal expansion)- a number very close to the best estimate of Vermeer & Rahmstorf (2009), derived
by linking the observed rate of sea level rise to the observed warming.
By the late 1990s, the
extent of sea
ice had fallen to its lowest level for at least 1400 years.
The area of the Arctic Ocean covered
by sea
ice in September, when the annual minimum occurs, was the sixth lowest
extent in the satellite record, going back to 1979.
This was the third smallest January
extent since records began in 1979, according to analysis
by the National Snow and
Ice Data Center based on data from NOAA and NASA.
This was the largest January Antarctic sea
ice extent on record, surpassing the previous record set in 2008
by 220,000 square miles.
The lowest
extent on record came during the remarkable summer melt season of 2012, fueled in part
by summer storms that moved
ice into warm waters.
It is important to regard the LGM studies as just one set of points in the cloud yielded
by other climate sensitivity estimates, but the LGM has been a frequent target because it was a period for which there is a lot of data from varied sources, climate was significantly different from today, and we have considerable information about the important drivers — like CO2, CH4,
ice sheet
extent, vegetation changes etc..
Earlier this week, scientists confirmed the area of Arctic Ocean covered
by sea
ice — known as sea
ice extent — reached a record low in November.
That is why informed folks, like those at Neven's Arctic Sea
Ice blog, talk instead about time frames for an «essentially» or «virtually» ice free Arctic Ocean — by this they generally mean anything under one million square meters of sea ice exte
Ice blog, talk instead about time frames for an «essentially» or «virtually»
ice free Arctic Ocean — by this they generally mean anything under one million square meters of sea ice exte
ice free Arctic Ocean —
by this they generally mean anything under one million square meters of sea
ice exte
ice extent.
This was the fourth smallest December
extent since records began in 1979, according to analysis
by the National Snow and
Ice Data Center based on data from NOAA and NASA.
The minimum Arctic sea
ice has declined
by a little over half since its maximum
extent of the past three decades.
Current predictions [5], [6] suggest that trends in sea
ice extent will alter in the second half of this century and that the annual average sea
ice extent will diminish
by 33 %; most of this retreat is expected to occur in winter and spring [5], [6], with attendant risks for emperor penguins.
The average Arctic sea
ice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NA
ice extent for November 2016 was 750,000 square miles (17.7 percent) below the 1981 — 2010 average, according to analysis
by the National Snow and
Ice Data Center using data from NOAA and NA
Ice Data Center using data from NOAA and NASA.
As the
extent of the sea
ice declines, energy from the sun that would have been reflected away is instead absorbed
by the ocean.
This changing sea
ice extent is cited
by the IPCC as an indicator of a warming world.
The average Arctic sea
ice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis by the National Snow and Ice Data Center using data from NOAA and NA
ice extent for October 2016 was 980,000 square miles (28.5 percent) below the 1981 — 2010 average, according to analysis
by the National Snow and
Ice Data Center using data from NOAA and NA
Ice Data Center using data from NOAA and NASA.
By month's end, daily sea
ice extent values were record low.
The average Arctic sea
ice extent for December was 4.67 million square miles, according to analysis by the National Snow and Ice Data Center based on data from NOAA and NA
ice extent for December was 4.67 million square miles, according to analysis
by the National Snow and
Ice Data Center based on data from NOAA and NA
Ice Data Center based on data from NOAA and NASA.
This was the fifth smallest September
extent since records began in 1979, according to analysis
by the National Snow and
Ice Data Center using data from NOAA and NASA.
For example, austral summer minimum
ice extents have varied
by as much as 25 % over the 1979 to 2014 modern satellite record.
The high anomalies up in the Arctic continue for a third month in GISTEMP and the question of the maximum Arctic Sea
Ice Extent is surely now only
by how much this freeze season will be below the record low set in 2017.
The motivation for this time series is to visualize the fact that the long term Arctic - wide loss of sea
ice is not only happening in
extent, which is well measured
by satellites, but also in thickness, which isn't.
Summertime sea
ice extent in the Arctic has been remarkably low since 2007 and the ensuing years have been marked
by some notable cold air outbreaks.
The latest data
by NSIDC for Arctic sea
ice extent shows that 2008
ice coverage has fallen to 2007 levels for the end of May:
In case this isn't already clear, there is simply no measure — neither thickness nor areal
extent —
by which Greenland can be said to have lost 15 % of its
ice.
The lag between decreases in sea
ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (like autumn and winter, when the recent loss of sea
ice is much smaller) have been demonstrated empirically, but have not been captured
by existing dynamical models.
... the confusion came most likely from a confusion in definitions of what is the permanent
ice sheet, and what are glaciers, with the «glaciers» being either dropped from the Atlas entirely or colored brown (instead of white)... there is simply no measure — neither thickness nor areal
extent —
by which Greenland can be said to have lost 15 % of its
ice.
By comparison, the actual minimum
ice extent was 18 percent less than the previous record set in 2007.