The latest estimated Arctic sea ice extent is the third lowest for the 10th of January at 13.103 million square kilometres, thats 91.7% of the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO. and ~880,000 lower than it was this time last year. Someone has definitely left the fridge door open here.🥵
Arctic sea ice extent third lowest on record Read More »
Antarctic sea ice extent has steadily improved in the last month and now stands at 99.6% of the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO.. Sea ice extent is up by ~900,000 square kilometres from this time last year, and close to 2 million square kilometres higher than the lowest for this date back in 2023. Obviously someone remembered to keep the fridge door shut down there this summer🥶
Antarctic sea ice extent at 99.6% of average Read More »
Arctic sea ice extent was the third lowest for this date at 77.8% of the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO., behind 2020 & 2019, and down 5.6% on the same date last year.
Antarctic sea ice extent was the second lowest since 1978 for this date at 89.2% of the LTA, just behind & tracking 2023, with ~8 weeks to go before maximum which was early last year.
1 Aug 2024 – Latest polar sea ice extent Read More »
I couldn’t quite believe the new research by Alexandra Jahn, of the University of Colorado that claims that the Arctic could be free of sea ice by the end of this decade 😮. In her research for free of ice read 386,000 square miles, or a million square kilometres, which isn’t exactly what I would describe as “free of sea ice”. I make the date to true zero to be the 7th of June 2071 by extrapolating a simple linear trend for the last 30 years of minima. Even then the Arctic would never be truly free of sea ice I suspect. The date to the one million square kilometres mentioned in the report at the same rate would be around the summer of 2058, which looks far more realistic than the end of this decade. 😉
Ice free Arctic? | 7 June 2071 | Another date for your diary Read More »
There’s been a massive fall of in Antarctic sea ice this season. I decided to emulate a graph I saw on Twitter that overlays a daily line series for each year since 1978 and then highlight specific series, red for 2023, blue for 2022, and green for 2016, the year of the previously lowest daily anomaly from the 1981-2010 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO.. The total for the 5th of July is just 12.332 million square kilometres, that’s just 81.6% of the LTA for that date, and around 1.8 million square kilometres lower than last year the previous lowest.
Below is another graph you don’t often see and that’s total global sea ice extent from both the Arctic and Antarctic combined. There’s a very noticeable year-on-year decline in Arctic sea ice extent in the world.
Antarctic Sea Ice Extent | 5 July 2023 Read More »
