Climate and Stuff: arctic sea ice

Showing posts with label arctic sea ice. Show all posts

2020/09/28

Arctic Sea Ice - well past minimum (2nd lowest)

The plot below is made using data from ADS NIPR Arctic Sea Ice Extent https://ads.nipr.ac.jp/vishop/#/extent

2020/01/04

The Last Arctic Sea Ice Update of 2019

From the jaxa website listed to the right

2019/11/27

November Arctic Sea Ice And Temperature

An update on the sea ice extent from Jaxa
https://ads.nipr.ac.jp/vishop/#/extent

and Arctic temperature from DMI
http://ocean.dmi.dk/arctic/meant80n.uk.php

2019/10/09

Unusual Arctic Sea Ice Autumn Rate of Gain of Extent

2019-10-08
Rate of gain as winter approaches has flattened and is significantly less than 2012 at this date:

The DMI actic temperature reflects the Ice state:

2019/08/16

Arctic Sea Ice 2019-08-15

Latest update
Still shows a likely 2019 minimum of around 4.1 million km²
But unlikely to be below 2012 minimum

DATA

https://ads.nipr.ac.jp/vishop/#/extent

2019/08/05

Arctic Sea Ice 2019-08-05

Arctic Sea Ice Extent from ADS

DATA

https://ads.nipr.ac.jp/vishop/#/extent

Data is lining up to be a normal reduction in extent (i.e. not an exceptional loss like 2012).

This would give a 2019 minimum of around 4.1 million km²if rate of loss is maintained

2019/06/19

ADS Arctic Sea ice mid June 2019

Plots with latest Data 18th June 2019

Rate of loss seems consistent with previous years.

data from ADS Vishop

2019/04/26

Sea ice 2019 April

Some growth this year after the onset of melt season - but overall the decline in extent continues as normal (see second plot).

Data from https://ads.nipr.ac.jp/vishop/#/extent

Some changes to plots from previous versions.

2018/12/21

Arctic Sea ice - December

A December update on Arctic Sea Ice as reported by JAXA.

https://ads.nipr.ac.jp/vishop/#/extent

Some wild swings especially in last few days (problem with measurement??)
The data now includes all years available from JAXA (1979 to present)

2018/07/02

End of June Arctic Sea Ice

Latest figure from Jaxa

Loss has slowed over the last month

2017/10/07

Arctic Sea Ice Melting Season Over

Season is now over and nothing exceptional

2017/01/23

Arctic Sea Ice to December 2016

First plot shows rate of change per day - Note wild fluctuations from October

Second plot show Extent on day of year - A few have line fits which show that the extent reduction is a reasonable fit to a straight line
The final plot shows the usual plus a rate of change per year.

2012/12/29

What DID happen to the ice during the Arctic Storm?

The daily rate of change is plotted below:

During the storm period 3 days show increased loss. Over the 2007 loss this is 292812 sq km

WUWT claim that this loss exposed more ice to later attack but only 2 other periods show gross changes:
During the period 15th August to 17th August (additional loss over 2007 is 178438 sq km)
During the period 22nd August to 23rd August (additional loss over 2007 is 174687 sq km)

So the Absolute maximum loss that could possibly be attributed to the "Great Arctic Storm" of 2012 is 645937 sq km.

The difference between the 2007 and 2012 minimum is 765468sq km

So even if you subtract the largest possible storm induced loss you would still have a 119531 sq km additional loss in 2012 when compared to 2007.

2012/09/30

Arctic/Antarctic Ice Extents 2012-09-30

No real comment - it's all been said elsewhere:

2012/08/28

Arctic Ice - The lady's not for turning (in the words of Thatcher)

Now at the last linear monthly fit before the minimum (see last plot). Been expecting the rate of loss to reduce but little change for weeks.

The plots now look like:

Nothing to say really - It is just incredibly odd.1

2012/08/16

Arctic sea ice 2012-08-15

After some large losses it looks as if the minimum may be around the 4.15e6 sq km

2012/08/03

Latest Arctic Ice data

Data plotted to 2nd August (valid to 1st August - area usually changes upwards when next averaged)

Ice loss seems on target to be minimum at around 4.55e6 km^2 this year