Arctic warming: Why record-breaking melting is just the beginning

[IanC]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

 

[IanC]

In the other hand, the Antarctic ice sheets lose little heat because they are very cold. The Arctic Ocean does have a constant source of heat because of ocean currents. Open ocean there can shed heat, at least when they are not insulated by a layer of ice.

 

[IanC]

One of the main sources of heat going into the Arctic is the highly variable tip of the Gulf Stream ending in the Barents Sea.

In the early 1920's Barents warmed up dramatically, with a huge loss of Arctic sea ice. If the same type of thing happened today it would be 'portent of AGW Doom'.

 

[IanC]

NOVEMBER, 1922. MONTHLY WEATHER REVIEW

THE CHANGING ARCTIC.

The Arctic seems to be warming up. Reports from fishermen, seal hunters, and explorers who sail the seas about Spitsbergen and the eastern Arctic, all point to a radical change in climatic conditions, and hitherto unheard-of high temperatures in that part of the earth’s surface.

The oceanographic observations have, however, been even more interesting. Ice conditions were exceptional. In fact, so little ice has never before “been noted.

In connection with Dr. Hoel’s report, it is of interest to note the unusually warm summer in Arctic Norway and the observations of Capt. Martin Ingebrigtsen, who has sailed the eastern Arctic for 54 years past. He says that he first noted warmer conditions in 1918, that since that time it has steadily gotten warmer, and that to-day the Arctic of that region is not recognizable as the same region of 1868 to 1917.

Many old landmarks are so changed as to be unrecognizable- Where formerly great masses of ice were found, there ore now often moraines, accumulations of earth and stones. At many points where glaciers formerly extended far into the sea they have entirely disappeared.

The change in temperature, says Captain Ingebrigtsen, has also brought about great change in the flora and fauna of the Arctic. This summer he sought for white fish in Spitsbergen waters. Formerly great shoals of them were found there. This year he saw none, although he visited all the old fishing grounds.

There were few seal in Spitsbergen waters this year, the catch being far under the average. This, however, did not surprise the captain- He pointed out that formerly the waters about Spitsbergen held an even summer temperature of about 3 Celsius; this year recorded temperatures up to 15, and last winter the ocean did not freeze over even on the north coast of Spitsbergen.

docs.lib.noaa.gov/rescue/mwr/050/mwr-050-11-0589a.pdf

 

[IanC]

Years ago, when I first saw this NOAA archive article, I searched for this particular ocean temp bump in our current records. I couldn't find it but that doesn't mean it doesn't exist somewhere.

Maybe it was just a fable, like the Vikings inhabiting Greenland during the nonexistent MWP. Hahahaha.

 

[RollingThunder]

toiletpaper://wattsupwiththat.files.wordpress.com/2016/03/percentage-of-ocean-that-has-sea-ice-cover.jpg?w=960&h=90

Looks to me like global sea ice is in good shape... even if we have a bit of melt were in dang good shape...

Citing a lying, fossil fuel industry sponsored, denier cult blog only impresses the other ignorant rightwingnut retards.

Arctic sea ice is NOT in "good shape", Boober. It is rapidly declining in both extent and volume.

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

wow, dude you are out of control. I see you can't have a discussion on anything in here. I believe the charts show the ice is just fine and in a normal build range. And you're behaving as if the arctic was empty ice. Just wow. I see integrity avoids you.

OK, JustCrazy, keep your head up your ass.

The scientific facts about the current state of the Arctic ice cap have been posted on this thread and others. You are blind to those facts exactly because your head is jammed so far up your ass.

The Arctic ice cap is greatly reduced in extent and volume and the decline in ice is still accelerating. This year saw the lowest and earliest maximum ice extent on record. 2016 will, almost certainly, see the next new record minimum extent next September, even lower than the record low reached in 2012. Volume will be at a new record low as well.

scientific facts? hahahahhahhahaahaha which ones are those?

And there is the deranged laughter of the denier cult retard who has no facts at all.

Please post up facts. The main fact I know is that the arctic has ~the same ice today as it had 30 years ago. And you got shit.

The main fact that you should know by now, JustCrazy, is that you are a very ignorant, very clueless, very insane retard who stooges for the fossil fuel industry propaganda pushers.

The Arctic, in the real world, has much, much less ice cover, both extent and volume, than it did 30 years ago.

Here's the facts, fool.

February continues streak of record low Arctic sea ice extent
National Snow and Ice Data Center
February 2, 2016
Arctic sea ice was at a satellite-record low for the second month in a row. The first three weeks of February saw little ice growth, but extent rose during the last week of the month. Arctic sea ice typically reaches its maximum extent for the year in mid to late March.

Arctic sea ice extent for February averaged 14.22 million square kilometers (5.48 million square miles), the lowest February extent in the satellite record. It is 1.16 million square kilometers (448,000 square miles) below the 1981 to 2010 long-term average of 15.4 million square kilometers (5.94 million square miles) and is 200,000 square kilometers (77,000 square miles) below the previous record low for the month recorded in 2005.

NASA and NOAA announced that January 2016 was the ninth straight month of record-breaking high surface temperatures for the globe. In terms of regional patterns, the Arctic stands out, with surface temperatures more than 4 degrees Celsius (7.2 degrees Fahrenheit) above the 1951 to 1980 average. These high temperatures were in part responsible for the record low sea ice extent observed for January. Persistent warmth has continued into February; air temperatures at the 925 hPa level were 6 to 8 degrees Celsius (11 to 14 degrees Fahrenheit) above the 1981 to 2010 average over the central Arctic Ocean near the pole. The rate of ice growth for February was near average at 19,700 square kilometers (7,600 square miles) per day, compared to 20,200 square kilometers (7,800 square miles) per day for the 1981 to 2010 average.

Figure 3. Monthly February sea ice extent for 1979 to 2016 shows a decline of 3.0 percent per decade. - Credit: National Snow and Ice Data Center

February 2016 sea ice extent was the lowest in the satellite record at 14.22 million square kilometers (5.48 million square miles). The linear rate of decline for February is now 3.0 percent per decade.

February average air temperatures, measured by AIRS at 925 hPa, are around 5 degrees Celsius (9 degrees Fahrenheit) above the 2003 to 2015 average over the Beaufort and Chukchi seas and the central Arctic Ocean. Above-average temperatures are also the rule over the Kara Sea and Northern Siberia (6 degrees Celsius or 11 degrees Fahrenheit above average). Regions with especially higher than average temperatures correspond to regions of low sea ice, demonstrating the role played by heat fluxes from open water areas. For example, the Sea of Okhotsk experienced below-average air temperatures, and also had above-average sea ice extents, whereas the Kara, Barents, and Bering seas and the Gulf of St. Lawrence had higher air temperatures compared to average, which coincides with lower than average sea ice extent.
***

Current State of the Sea Ice Cover
NOAA
March 2, 2016
The sea ice cover is one of the key components of the climate system. It has been a focus of attention in recent years, largely because of a strong decrease in the Arctic sea ice cover and modeling results that indicate that global warming could be amplified in the region by a factor of about 3 to 5 times on account of ice-albedo feedback. This results from the high reflectivity (albedo) of the sea ice compared to ice-free waters. A satellite-based data record starting in late 1978 shows that indeed rapid changes have been occurring in the Arctic, where the perennial (multi-year) ice cover has been declining at the rate of about 13% per decade and the ice cover as a whole has been declining at the lesser rate of about 5% per decade.
***


Figure 1: Average July through September Arctic sea ice extent 1870-2008 from the University of Illinois (Walsh & Chapman 2001 updated to 2008) and observational data from NSIDC for 2009-2011 (blue), with a fourth order polynomial fit (black soiid line). Black vertical dashed lines indicate the years 1938-43.
(source)

 

[Old Rocks]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

 

[Billy_Bob]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

 

[RollingThunder]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

You love to pretend that you know more about the state of the polar ice than the real scientists who study this professionally.....when in fact, as you make very clear, you are an ignorant clueless retard who doesn't know shit from shinola.

 

[jc456]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

You love to pretend that you know more about the state of the polar ice than the real scientists who study this professionally.....when in fact, as you make very clear, you are an ignorant clueless retard who doesn't know shit from shinola.

well from an outsider watching the thread, it seems he was pointing out that you failed to include all of the available measurements. Please quote where he claimed he said what you posted up was wrong? I'm sorry, but fella, you jumped off a bridge to make your last post. Funny!!

 

[RollingThunder]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

You love to pretend that you know more about the state of the polar ice than the real scientists who study this professionally.....when in fact, as you make very clear, you are an ignorant clueless retard who doesn't know shit from shinola.

well from an outsider watching the thread, it seems he was pointing out that you failed to include all of the available measurements. Please quote where he claimed he said what you posted up was wrong? I'm sorry, but fella, you jumped off a bridge to make your last post.

And another clueless denier cult retard pops up....one who also doesn't know his ass from a hole in the ground but imagines he knows more than the professional scientists.

Antarctic sea ice is seasonal....it shrinks to almost nothing in the Southern Hemisphere summer, and then grows a lot in winter. The slight increase in winter extents is just not that significant....and it is caused, partially, by the increased atmospheric water vapor content caused by global warming. Antarctic winter sea ice maximum extents are already starting to decline, just as the climate scientists predicted they would.

Antarctic Sea Ice
NOAA - Earth Observatory
By Rebecca Lindsey
September 1999 & February 2000

1999–2000

Unlike the Arctic—an ocean basin surrounded by land—the Antarctic is a large continent surrounded by an ocean. Because of this geography, sea ice has more room to expand in the winter. But that ice also stretches into warmer latitudes and is exposed to the open ocean, leading to more melting in summer. Antarctic sea ice peaks in September (the end of Southern Hemisphere winter) and retreats to a minimum in February.

These image pairs show Antarctic sea ice extent at the September maximum (left) and the following February minimum (right) from September 1999 to February 2015. Land is dark gray, and ice shelves—thick slabs of glacial ice grounded along the coast—are light gray. The yellow outline shows the median sea ice extent in September and February from 1979 to 2000. Extent is the total area in which the ice concentration is at least 15 percent. The median is the middle value; that is, half of the extents were larger than the line, and half were smaller.

Since the start of regular satellite observations in 1979, total Antarctic sea ice has increased by about 1 percent per decade. Whether the increase is a sign of meaningful change is uncertain because ice extents vary considerably from year to year around Antarctica. For three consecutive Septembers from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while the Arctic was seeing record lows.

Within Antarctic sea ice, there is great variation from place to place around the continent. The Ross Sea sector has had a significant positive trend, while sea ice extent has decreased in the Bellingshausen and Amundsen Seas. In short, Antarctic sea ice shows a small positive trend, but large-scale variations make the trend very noisy.

This time series above is made from a combination of observations from the Special Sensor Microwave/Imagers (SSM/Is) flown on a series of Defense Meteorological Satellite Program missions. The sensors measure microwave energy radiated from the Earth’s surface (sea ice and open water emit microwaves differently), which can be used to map sea ice concentrations.

• Further Reading
• Cavalieri, D. J., and C. L. Parkinson (2008) Antarctic sea ice variability and trends, 1979–2006, Journal of Geophysical Research Oceans. 113, C07004.
• NASA Earth Observatory (2009, April 20) Sea Ice.
• NSIDC State of the Cryosphere.
• NSIDC Frequently Asked Questions about Sea Ice.
• NSIDC Sea Ice Index.
• NSIDC (2007, September 25). Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I.
• Raphael, M.N. (2007) The influence of atmospheric zonal wave three on Antarctic sea ice variability. Journal of Geophysical Research. 112, D12112.
• Steig, E.J., Schneider, D.P., Rutherford, S.D., Mann, M.E., Comiso, J.C., Shindell, D.T. (2009) Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year. Nature. 457, 459-463.

 

[Billy_Bob]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

You love to pretend that you know more about the state of the polar ice than the real scientists who study this professionally.....when in fact, as you make very clear, you are an ignorant clueless retard who doesn't know shit from shinola.

well from an outsider watching the thread, it seems he was pointing out that you failed to include all of the available measurements. Please quote where he claimed he said what you posted up was wrong? I'm sorry, but fella, you jumped off a bridge to make your last post.

And another clueless denier cult retard pops up....one who also doesn't know his ass from a hole in the ground but imagines he knows more than the professional scientists.

Antarctic sea ice is seasonal....it shrinks to almost nothing in the Southern Hemisphere summer, and then grows a lot in winter. The slight increase in winter extents is just not that significant....and it is caused, partially, by the increased atmospheric water vapor content caused by global warming. Antarctic winter sea ice maximum extents are already starting to decline, just as the climate scientists predicted they would.

Antarctic Sea Ice
NOAA - Earth Observatory
By Rebecca Lindsey
September 1999 & February 2000

1999–2000

Unlike the Arctic—an ocean basin surrounded by land—the Antarctic is a large continent surrounded by an ocean. Because of this geography, sea ice has more room to expand in the winter. But that ice also stretches into warmer latitudes and is exposed to the open ocean, leading to more melting in summer. Antarctic sea ice peaks in September (the end of Southern Hemisphere winter) and retreats to a minimum in February.

These image pairs show Antarctic sea ice extent at the September maximum (left) and the following February minimum (right) from September 1999 to February 2015. Land is dark gray, and ice shelves—thick slabs of glacial ice grounded along the coast—are light gray. The yellow outline shows the median sea ice extent in September and February from 1979 to 2000. Extent is the total area in which the ice concentration is at least 15 percent. The median is the middle value; that is, half of the extents were larger than the line, and half were smaller.

Since the start of regular satellite observations in 1979, total Antarctic sea ice has increased by about 1 percent per decade. Whether the increase is a sign of meaningful change is uncertain because ice extents vary considerably from year to year around Antarctica. For three consecutive Septembers from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while the Arctic was seeing record lows.

Within Antarctic sea ice, there is great variation from place to place around the continent. The Ross Sea sector has had a significant positive trend, while sea ice extent has decreased in the Bellingshausen and Amundsen Seas. In short, Antarctic sea ice shows a small positive trend, but large-scale variations make the trend very noisy.

This time series above is made from a combination of observations from the Special Sensor Microwave/Imagers (SSM/Is) flown on a series of Defense Meteorological Satellite Program missions. The sensors measure microwave energy radiated from the Earth’s surface (sea ice and open water emit microwaves differently), which can be used to map sea ice concentrations.

• Further Reading
• Cavalieri, D. J., and C. L. Parkinson (2008) Antarctic sea ice variability and trends, 1979–2006, Journal of Geophysical Research Oceans. 113, C07004.
• NASA Earth Observatory (2009, April 20) Sea Ice.
• NSIDC State of the Cryosphere.
• NSIDC Frequently Asked Questions about Sea Ice.
• NSIDC Sea Ice Index.
• NSIDC (2007, September 25). Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I.
• Raphael, M.N. (2007) The influence of atmospheric zonal wave three on Antarctic sea ice variability. Journal of Geophysical Research. 112, D12112.
• Steig, E.J., Schneider, D.P., Rutherford, S.D., Mann, M.E., Comiso, J.C., Shindell, D.T. (2009) Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year. Nature. 457, 459-463.

The length of your history is since 1979... Just 37 years and the average cycle on earth is over 900 years..

Don't make me laugh at the shear ignorance of a fool that is making shit decisions on things with hardly a single hair strand of evidence. While the earth is over 4.5 billion years old and has cycled through warm and cold phases far greater and far faster than today.. Ignoring these and claiming man is the whole issue is pure lunacy..

Tell Me, who caused the rapid warm up of over 10 deg C inside of 22 years out of the last ice age?

 

[RollingThunder]

Trying to conflate the rapidly and massively declining Arctic sea ice with the very seasonal, temporarily increasing Antarctic sea ice is another fraudulent denier cult propaganda meme. The Antarctic sea ice is insignificant compared to the land-based ice resting on the continent of Antarctica.

The sea ice surrounding Antarctica is more important than Arctic sea ice for the simple reason that it is at a lesser latitude. The solar flux being reflected is greater because it is at a less oblique angle.

This is seldom mentioned in the media because it 'dilutes' the message.

Southern Hemisphere Sea Ice Area

OK, let's mention it. Right there. Well below what it has been. In fact, minus anomaly.

http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.anomaly.antarctic.png

again you use the worthless 15% sea ice coverage graph and data which is pretty much use less.. and again you fail to understand that this is not the measurement which tells all..

You love to tell half truths and then scream the sky is falling, the sky is falling.. When empirical evidence show you a liar.

You love to pretend that you know more about the state of the polar ice than the real scientists who study this professionally.....when in fact, as you make very clear, you are an ignorant clueless retard who doesn't know shit from shinola.

well from an outsider watching the thread, it seems he was pointing out that you failed to include all of the available measurements. Please quote where he claimed he said what you posted up was wrong? I'm sorry, but fella, you jumped off a bridge to make your last post.

And another clueless denier cult retard pops up....one who also doesn't know his ass from a hole in the ground but imagines he knows more than the professional scientists.

Antarctic sea ice is seasonal....it shrinks to almost nothing in the Southern Hemisphere summer, and then grows a lot in winter. The slight increase in winter extents is just not that significant....and it is caused, partially, by the increased atmospheric water vapor content caused by global warming. Antarctic winter sea ice maximum extents are already starting to decline, just as the climate scientists predicted they would.

Antarctic Sea Ice
NOAA - Earth Observatory
By Rebecca Lindsey
September 1999 & February 2000

1999–2000

Unlike the Arctic—an ocean basin surrounded by land—the Antarctic is a large continent surrounded by an ocean. Because of this geography, sea ice has more room to expand in the winter. But that ice also stretches into warmer latitudes and is exposed to the open ocean, leading to more melting in summer. Antarctic sea ice peaks in September (the end of Southern Hemisphere winter) and retreats to a minimum in February.

These image pairs show Antarctic sea ice extent at the September maximum (left) and the following February minimum (right) from September 1999 to February 2015. Land is dark gray, and ice shelves—thick slabs of glacial ice grounded along the coast—are light gray. The yellow outline shows the median sea ice extent in September and February from 1979 to 2000. Extent is the total area in which the ice concentration is at least 15 percent. The median is the middle value; that is, half of the extents were larger than the line, and half were smaller.

Since the start of regular satellite observations in 1979, total Antarctic sea ice has increased by about 1 percent per decade. Whether the increase is a sign of meaningful change is uncertain because ice extents vary considerably from year to year around Antarctica. For three consecutive Septembers from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while the Arctic was seeing record lows.

Within Antarctic sea ice, there is great variation from place to place around the continent. The Ross Sea sector has had a significant positive trend, while sea ice extent has decreased in the Bellingshausen and Amundsen Seas. In short, Antarctic sea ice shows a small positive trend, but large-scale variations make the trend very noisy.

This time series above is made from a combination of observations from the Special Sensor Microwave/Imagers (SSM/Is) flown on a series of Defense Meteorological Satellite Program missions. The sensors measure microwave energy radiated from the Earth’s surface (sea ice and open water emit microwaves differently), which can be used to map sea ice concentrations.

• Further Reading
• Cavalieri, D. J., and C. L. Parkinson (2008) Antarctic sea ice variability and trends, 1979–2006, Journal of Geophysical Research Oceans. 113, C07004.
• NASA Earth Observatory (2009, April 20) Sea Ice.
• NSIDC State of the Cryosphere.
• NSIDC Frequently Asked Questions about Sea Ice.
• NSIDC Sea Ice Index.
• NSIDC (2007, September 25). Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I.
• Raphael, M.N. (2007) The influence of atmospheric zonal wave three on Antarctic sea ice variability. Journal of Geophysical Research. 112, D12112.
• Steig, E.J., Schneider, D.P., Rutherford, S.D., Mann, M.E., Comiso, J.C., Shindell, D.T. (2009) Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year. Nature. 457, 459-463.

The length of your history is since 1979... Just 37 years and the average cycle on earth is over 900 years..

Don't make me laugh at the shear ignorance of a fool that is making shit decisions on things with hardly a single hair strand of evidence. While the earth is over 4.5 billion years old and has cycled through warm and cold phases far greater and far faster than today.. Ignoring these and claiming man is the whole issue is pure lunacy..

Tell Me, who caused the rapid warm up of over 10 deg C inside of 22 years out of the last ice age?

Your demented, anti-science denier cult myths are both insane and totally meaningless, Boober....as are your ignorant assumptions about just what scientists know and don't know. Your retarded notion that NASA and all of the thousands of scientists all around the world who are studying these issues must be complete fools who don't know what they are talking about, is just another manifestation of your serious affliction with the Dunning-Kruger Effect....and your extreme stupidity.

 

[Ivan88]

Thinking that the scientific facts are in any way affected by the statements that any politician made at some point in the past is just flat out insane,

The Truth of the matter is ignored by both politicos and self professed "scientists." All of them ignored the fact the Earth's position in relation to the Sun had changed significantly during a period between about 1999 and 2015 and maybe beyond, to such an extent that the Tropic of Cancer is about 1200 miles North of where it used to be..

 

[elektra]

Your demented, anti-science denier cult myths are both insane and totally meaningless, Boober....as are your ignorant assumptions about just what scientists know and don't know. Your retarded notion that NASA and all of the thousands of scientists all around the world who are studying these issues must be complete fools who don't know what they are talking about, is just another manifestation of your serious affliction with the Dunning-Kruger Effect....and your extreme stupidity.

Nice flame, but, just a little bit of study shows there is no AGW and if there was, green energy is the problem not the solution.

 

[ding]

The OP hasn't been around for quite sometime. I think he died from covid.

 

[skookerasbil]

Nobody cares

 

[westwall]

Yet another doom and gloom thread that didn't age well.

Our globull warming fraud pushers have a 100% fail rate.

In other words, there is NO real science involved.

 

[Shawnee_b]

Better warn piglosi and ovomit, their beach front property will be underwater soon.

 

[Old Rocks]

Yet another doom and gloom thread that didn't age well.

Our globull warming fraud pushers have a 100% fail rate.

In other words, there is NO real science involved.

Ah yes, no science involved, but every Scientific Society, every National Academy of Science, and every major University in the world has policy statements that AGW is real, and a clear and present danger. But we have a internet pretend scientist telling us that science does not support the fact that our burning of fossil fuels and increasing the GHGs in the atmosphere is increasing the heat retained by atmosphere and oceans. Oh, who to believe.