Annual Average Sea Ice Volume

2018 was the 5th lowest calendar year on record for annual average sea ice volume in the Arctic. After 2017, 2012, 2016 & 2011. Since New Year we’ve climbed further up, and by early March it seems likely we’ll go beyond the 14 mark for the first time since November 2016, by averaging higher than 14 thousand km³ sea ice volume.

Q: Where’s the data source for this plot?
A: Here: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/
Q: How can anyone make an annual average graph?
A: Easy. Use a computer. Add all the ice for the latest 365 days, divide by that number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.

Second 1–Week Melt in the Arctic

February 19th to 26th saw the second 1–week melt or compaction of sea ice in the 2019 Arctic. That is, the sea ice extent reported by JAXA was lower than 7 days before for the second time this year, be it primarily due to wind or actual melting of ice. Arguably, every single day of the year contains a combination of melt and freeze, or compaction and expansion, so clearly, we’re talking about a net melt.

Possible annual sea ice maximum: February 19–26 saw weekly extent decline for the second time, and the 17,000 km² decrease was enough to take 2019 from 12th to 7th lowest.

Meanwhile, the much more important data for sea ice volume can be seen in this zoomed out 10–year chart:

Sea ice volume showing an irreversible, post–Tipping Point collapse towards zero Arctic sea ice. Arguably, this is the most significant graph in all of human history, revealing both the lies of the UN and the larger Climate Change Community and the now inevitable fate of Global Industrial Civilisation.

Please help share this most important graph revealing persistent decline and a climate Tipping Point several decades back in our past: The true Tipping Point for ice is not at a future date or a yet to materialise future temperature threshold, it already happened.

Should you need more walk–through / explanation of the chart, I’ve got that in these fine videos: youtu.be/hXjbUY-Nt3Q | youtu.be/w8Hh5f68lhA | youtu.be/4DhzKbx21S8

Q: Where’s the data source for this plot?
A: Here: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/
Q: How can anyone make a decadal average graph?
A: Easy. Use a computer. Add all the ice for the latest 3650 days, divide by that number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in the latest decade compared to the decades before that.

Annual Average Sea Ice Extent

2018 was the 2nd lowest (start of the green graph) calendar year on record for annual average sea ice extent in the Arctic. After 2016, but before 2017. Since New Year we’ve climbed back up to 4th lowest, and per now it even seems likely we’ll leave this chart at the high end during March, by averaging higher than 10 million km² sea ice extent, for the first time since June 2016.

Q: Where’s the data source for this plot?
A: Here: https://ads.nipr.ac.jp/vishop/#/extent
Q: How can anyone make an annual average graph?
A: Easy. Use a computer. Add all the ice for the latest 365 days, divide by that number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.

Arctic sea ice extent refreeze (Maximum?)

Arctic sea ice extent refreeze has come 103% of the way since Summer Minimum per February 22nd. The lowest extent year ever, 2016, by the same date, was at 96%.

Q: Where’s the data source for this plot?
A: Here: https://ads.nipr.ac.jp/vishop/#/extent
Q: How can anyone know if there is a full refreeze?
A: Easy. Use a computer. If you have e.g a 10 million km² extent melt, and then the refreeze is also 10 million km², then you have a full, or 100%, refreeze.
Q: Why would I even do that?
A: Let’s say you want to know how much ice refreezes compared to how much ice that melted away.

Year-To-Date Average Sea Ice Volume

With 2018 ending at a 5th lowest average for the year for Arctic sea ice volume, we’re now up to the 6th lowest position per February 21st. These are however still early days, and a 52–day average, while much more reliable than a daily figure, is a lot less indicative of where the year is going than, say, a 100–day or 200–day average. This could still go either way! Note also how incredibly tight we are with 2012, all the way from the start on New Year’s Day, keeping in mind that 2012 still went ahead to a record low September minimum and annual average volume, at the time.

Q: Where’s the data source for this plot?
A: Here: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/
Q: How can anyone make a year-to-date average graph?
A: Easy. Use a computer. Add all the ice for every day so far this year, divide by the number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.

Year-To-Date Average Sea Ice Extent

With 2018 ending at a 2nd lowest average for the year for Arctic sea ice extent, and with the new year–to–date average at only the 8th lowest on record after the first week of January, we’re now down to the 5th lowest position per February 20th. These are however still early days, and a 51–day average, while much more reliable than a daily figure, is a lot less indicative of where the year is going than, say, a 100–day or 200–day average. This could still go either way!

Q: Where’s the data source for this plot?
A: Here: https://ads.nipr.ac.jp/vishop/#/extent
Q: How can anyone make a year-to-date average graph?
A: Easy. Use a computer. Add all the ice for every day so far this year, divide by the number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.

Arctic sea ice volume refreeze

Arctic sea ice volume refreeze has come 89% of the way since Summer Minimum per February 19th. The lowest volume year ever, 2017, by the same date, was at 73%.

Q: Where’s the data source for this plot?
A: Here: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/
Q: How can anyone know if there is a full refreeze?
A: Easy. Use a computer. If you have e.g a 17 thousand km³ volume melt, and then the refreeze is also 17 thousand km³, then you have a full, or 100%, refreeze.
Q: Why would I even do that?
A: Let’s say you want to know how much ice refreezes compared to how much ice that melted away.

Arctic sea ice extent refreeze

Arctic sea ice extent refreeze has come 101% of the way since Summer Minimum per February 18th. The lowest extent year ever, 2016, by the same date, was at 96%.

Q: Where’s the data source for this plot?
A: Here: https://ads.nipr.ac.jp/vishop/#/extent
Q: How can anyone know if there is a full refreeze?
A: Easy. Use a computer. If you have e.g a 10 million km² extent melt, and then the refreeze is also 10 million km², then you have a full, or 100%, refreeze.
Q: Why would I even do that?
A: Let’s say you want to know how much ice refreezes compared to how much ice that melted away.

Annual Average Sea Ice Volume

2018 was the 5th lowest calendar year on record for annual average sea ice volume in the Arctic. After 2017, 2012, 2016 & 2011. Since New Year we’ve climbed further up, and per now it even seems likely we’ll leave this chart at the high end, by averaging higher than 14 thousand km³ sea ice volume.

Q: Where’s the data source for this plot?
A: Here: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/
Q: How can anyone make an annual average graph?
A: Easy. Use a computer. Add all the ice for the latest 365 days, divide by that number of days.
Q: Why would I even do that?
A: Let’s say you want to know how much ice we have in 2019 compared to other years.