Antarctica, the «inconvenient» pole, the naughty child, has been
gaining ice mass and cooling for decades, despite a 20 percent increase in atmospheric CO2, and model predictions to the contrary.
MEANWHILE, as the climate mafia propagandisers inside their COLD = HOT bubble, the other conveniently forgotten pole, Antarctica, continues its long 40 year + cooling trend,
gaining ice mass despite record and rising CO2 levels and claims of «The Hottest Years Evah ``...
In short, Antarctica could be
gaining ice mass and still causing the oceans to rise.
Not exact matches
Glaciologists say this is not the case: The Ross Sea Sector is
gaining mass because one glacier, the Kamb
Ice Stream, which periodically stops and starts, is currently in stop mode and therefore not dumping ice into the oce
Ice Stream, which periodically stops and starts, is currently in stop mode and therefore not dumping
ice into the oce
ice into the ocean.
It's also thought to be among the most stable, not
gaining or losing
mass even as
ice sheets in West Antarctica and Greenland shrink.
The
ice sheet is
gaining mass and thus removing water from sea levels.
The East Antarctic
Ice Sheet is the only ice sheet likely to gain in mass, but even this ice sheet has the potential to rapidly lose ice volume around its marine - grounded secto
Ice Sheet is the only
ice sheet likely to gain in mass, but even this ice sheet has the potential to rapidly lose ice volume around its marine - grounded secto
ice sheet likely to
gain in
mass, but even this
ice sheet has the potential to rapidly lose ice volume around its marine - grounded secto
ice sheet has the potential to rapidly lose
ice volume around its marine - grounded secto
ice volume around its marine - grounded sectors.
Monckton says «The Antarctic, which holds 90 percent of the world's
ice and nearly all its 160,000 glaciers, has cooled and
gained ice -
mass over the past 30 years, reversing a 6,000 - year melting trend.»
Overall,
ice shelves in the Amundsen sea sector lost about five times as much
mass as they
gained during the event.
Fully aware of this standard response to injuries, coaches and athletes looked to
ice baths as a tool to accelerate
gains in strength, power and lean muscle
mass.
Models actually predict that the interior of the
ice sheets should
gain mass because of the increased snowfall that goes along with warmer temperatures, and recent observations actually agree with those predictions.
This is despite using observed
ice sheet
mass loss (0.19 mm / year) in the «modelled» number in this comparison, otherwise the discrepancy would be even larger — the
ice sheet models predict that the
ice sheets
gain mass due to global warming.
• Current global model studies project that the Antarctic
ice sheet will remain too cold for widespread surface melting and is expected to
gain in
mass due to increased snowfall.
The Greenland
ice sheet
gains mass via snowfall and losses
mass via the production of icebergs and by melt of
ice in the
ice marginal zone.
But again the «models» estimate includes an observed
ice sheet
mass loss term of 0.41 mm / year whereas
ice sheet models give a
mass gain of 0.1 mm / year for this period; considering this, observed rise is again 50 % faster than the best model estimate for this period.
Although that's really all that needs be said, I should add that jetfuel is trying to compare cumulative year - over-year land
ice mass loss in Antarctica with (cyclical) seasonal river / lake
ice volume
gain in Canada - and ignoring the inevitable melt - away of the latter.
The ongoing flux of mantle material into areas which have experienced large - scale
ice -
mass loss since the LGM looks like
mass gain to GRACE.
So long as an
ice sheet
gains an equal
mass through snowfall as it loses through melt, ablation, and calving from glaciers and
ice shelves, it is said to be in balance.
Additionally, unadjusted GRACE gravity data has suggested no lost
ice mass and all estimates of
ice gains or loss depend on which Glacial Isostatic Adjustments modelers choose to use.
If
mass loss exceeds
mass gain the
ice sheet will shrink.
A wealth of historical imagery exists for Greenland, and scientists could use this data to develop even more detailed histories of the
ice sheet, and to determine whether the Greenland Ice Sheet was at equilibrium — not losing or gaining mass — in recent tim
ice sheet, and to determine whether the Greenland
Ice Sheet was at equilibrium — not losing or gaining mass — in recent tim
Ice Sheet was at equilibrium — not losing or
gaining mass — in recent times.
DMI says, The surface
mass balance is calculated over a year from September 1st to August 31st (the end of the melt season) For the 2016 - 17 SMB year, which ended yesterday, the
ice sheet had
gained 544bn tonnes of
ice, compared to an average for 1981 - 2010 of 368bn tonnes.
Equilibrium line - The boundary between the region on a glacier where there is a net annual loss of
ice mass (ablation area) and that where there is a net annual
gain (accumulation area).
Two of the
ice streams that flow in the Ross Ice Shelf have slowed, they said, and that area of Antarctica is gaining ma
ice streams that flow in the Ross
Ice Shelf have slowed, they said, and that area of Antarctica is gaining ma
Ice Shelf have slowed, they said, and that area of Antarctica is
gaining mass.
Antartica is
gaining land
ice mass and sea I
ice mass and sea
IceIce.
As for future influences of melting glaciers, consider that the Arctic, which goes through regular 60 - to 70 - year - long warming and cooling cycles, has most recently been losing some
ice mass, while most of the vastly larger Antarctic continent has been
gaining.
Although Zwally calculated the net «
mass gains from snow accumulation exceeded losses from
ice discharge by about 112 and 82 Gt / year respectively during the 1992 - 2001 and 2003 - 08 measurement periods», he also reported that the rate of
ice loss along the west Antarctic coast and the peninsula had increased from 64 GT / year to 135 GT / year during those same periods.
A 2015 study using regional
ice core data reveals no unusual temperature changes but an exceptional 30 % increase in snow accumulation during the twentieth century, again supporting Zwally's analysis of
mass gain in interior west Antarctica.
Such models also indicate that warming would initially cause the Antarctic
ice sheet as a whole to
gain mass owing to an increased accumulation of snowfall (*; some recent studies find no significant continent - wide trends in accumulation over the past several decades; Lemke et al., 2007 Section 4.6.3.1).
In recent years researchers have been lowering their estimates of
mass gained during the last
Ice Age and lost ice mass during the recent deglaciati
Ice Age and lost
ice mass during the recent deglaciati
ice mass during the recent deglaciation.
NOTE: this doesn't mean the
ice sheet was
gaining ice before 2006 but that
ice mass was above the 2002 to 2010 average.
Ice, Cloud and land Elevation Satellite (ICESat) data (2003 — 08) show
mass gains from snow accumulation exceeded discharge losses by 82 ± 25 Gt a − 1, reducing global sea - level rise by 0.23 mm a − 1.
Losses from surface melting, water runoff, the breakup of glaciers into the ocean (calving), and the transformation of solid
ice into water vapor (sublimation) exceed any
gains through snowfall.2, 3,4,5 The Greenland
ice sheet loses most of its
mass on the perimeter, through a dozen fast - moving glaciers, including Helheim.5, 6
4) Contradictions that current theory may not be able to resolve (e.g., is antarctica supposed to
gain or lose
ice mass in the short term?).
Mass Gains of the Antarctic
Ice Sheet Exceed Losses http://ntrs.nasa.gov/search.jsp?R=20120013495 SCAR ISMASS Workshop, July 14, 2012 «During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation cha
Ice Sheet Exceed Losses http://ntrs.nasa.gov/search.jsp?R=20120013495 SCAR ISMASS Workshop, July 14, 2012 «During 2003 to 2008, the
mass gain of the Antarctic
ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation cha
ice sheet from snow accumulation exceeded the
mass loss from
ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation cha
ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation change
And more recent estimates of the Antarctic
mass balance contribution to sea level rise has the East Antarctica
ice sheet
gaining mass at a more accelerated pace for 2003 - 2013 than the mere +14 Gt per year identified by Shepherd et al. (2012) for 1992 - 2011.
For example, Martín - Español et al. (2017) find that the total
mass trend for the East Antarctic
Ice Sheet was a
gain of +57 Gt per year during 2003 - 2013, which is 4 times the rate of
gain assessed for 1992 - 2011.
Scientists: Warming causes Antarctic
ice sheet growth, and lower sea levels By Kenneth Richard While many scientists are projecting rapid sea level rise as a result of a warmer Antarctica and consequent
ice sheet melting, other scientists are projecting that the surface of the Antarctic
ice sheet will
gain in
mass because a warmer Antarctica means snow and
ice accumulation will outpace the -LSB-...]
the
ice cap may be losing
mass, but the
ice pack is
gaining in extent.
Furthermore, IPCC just as clearly states «Current global model studies project that the Antarctic
ice sheet will remain too cold for widespread surface melting and is expected to
gain in
mass due to increased snowfall.»
For example, chapter ten, «
Ice melts, sea level rises,» discusses the disappearance of tropical mountain glaciers, estimates of sea level rise in the present century, estimates of its costs — the EPA estimated in 1991 that a one - meter rise would cost the US alone between $ 270 billion and $ 475 billion — evidence of past oceanic high - water marks and glacial extents, the dynamics of ice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds, ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raq
Ice melts, sea level rises,» discusses the disappearance of tropical mountain glaciers, estimates of sea level rise in the present century, estimates of its costs — the EPA estimated in 1991 that a one - meter rise would cost the US alone between $ 270 billion and $ 475 billion — evidence of past oceanic high - water marks and glacial extents, the dynamics of
ice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds, ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raq
ice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds,
ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raq
ice mass loss and
gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine
ice sheets.&raq
ice sheets.»
Concern is raised by recent inferences from gravity measurements that the WAIS is losing
mass (39), and observations that glaciers draining into the Amundsen Sea are losing 60 % more
ice than they are
gaining and hence contributing to sea - level rise (40).
Current total
ice - loss in Greenland is running at an estimated 200 Gte / yr and Antarctica at 150 Gte / yr (with
ice mass gain in the east and loss in the west — with some estimates of a net
gain)-- at that rate of 1mm / yr, by 2100 the global
ice - loss would raise sea level by a little over 3 inches.
Current models suggest
ice mass losses increase with temperature more rapidly than
gains due to increased precipitation and that the surface
mass balance becomes negative (net
ice loss) at a global average warming (relative to pre-industrial values) in excess of 1.9 to 4.6 °C.
They grow when the
ice sheet
gains mass through snowfall.
Jim D, according to Zwally based on IceSat Antarctica is not losing, and may be
gaining,
ice mass.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120013495.pdf During 2003 to 2008, the
mass gain of the Antarctic
ice sheet from snow accumulation exceeded the
mass loss from
ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation change.
«
Ice sheets now appear to be contributing modestly to sea level rise because warming has increased
mass loss from coastal areas more than warming has increased
mass gain from enhanced snowfall in cold central regions,» the report by a team led by Professor Richard Alley of Pennsylvania State University in the US says.
The papers do not address the total
mass balance of the
ice sheets, and the authors admit that the ablation at the edges may offset the
gains on the interior.
Iceman, Upon more careful reading I note that the data used in the study showing net
gain in
ice mass stopped in 2002 and the other study was for a period of time subsequent to this.