Sunday, 9 July 2017

Arctic ice melt update - 07/08/2017

Climate & Extreme Weather News #41 (July 4th to July 6th 2017)




Our Jet Streams: Loopy, Streaky, Weary & Broken Down. SAD.




Decline of Arctic sea ice over 1 month


A highly unreliable sat. Measuring tool, but this is what it shows...certainly most all the ice around the edges and outside the central arctic (the easiest to melt first) has and is being lost to this point, but the jetstream is crossing into the arctic consistently in at least two places and the five-day whether forecast looks Real bad!

---Chris Eldridge

***

One month ago, on 8th June the ice voume 18,536 km³ (4th lowest for the date) while the ice extent was 10,718,689 km² (5th lowest for the date)



Daily volume: 18,536 km³ (4th lowest for the date) Δ +11/day
+243/week, –2740/month, +3197/year, +1174/5year (+6.8%)
Daily extent: 10,718,689 km² (5th lowest for the date) Δ –78k/day
420k/week, –1568k/month, +440k/year, –126k/5year (–1.2%)

2017 volume maximum 22,255 km³ on May 12th (*lowest*)
2017 extent maximum 13,878,287 km² on March 6th (*lowest*)
2017 extent minimum¹ 10,718,689 km² on June 8th
¹Preliminary max/min

Source: JAXA / Wipneus for June 8th 2017


One month later, on 7 July the ice volume is 8,506,774 km² (4th lowest for the date).No figures for ice extent.


Daily extent: 8,506,774 km² (4th lowest for the date) Δ –66k/day
606k/week, –2353k/month, +105k/year, +84k/5year (+1%)
2017 extent maximum 13,878,287 km² on March 6th (*lowest*)
2017 extent minimum¹ 8,506,774 km² on July 6th
¹Preliminary max/min


Source: JAXA for July 6th 2017.

One day later, on 8th July the ice volume has dropped to 5,790 km³ (2nd lowest for the date) and ice extent 8,386,935 km² (5th lowest for the date).

That is a drop of 12,746 km³ in the course of a month, a little less than a half of the 2017 maximum of 22,255  km³ on 
May 12.

It is the ice volume that is the most important as it reflects the thin nature of the ice.

Daily volume: 5,790 km³ (2nd lowest for the date) Δ –1950/day
4484/week, –12746/month, –285/year, –4620/5year (–44%)
Daily extent: 8,386,935 km² (5th lowest for the date) Δ –53k/day
536k/week, –2332k/month, +115k/year, +127k/5year (+1.5%)

2017 volume maximum 22,255 km³ on May 12th (*lowest*)
2017 volume minimum¹ 5,790 km³ on July 8th
2017 extent maximum 13,878,287 km² on March 6th (*lowest*)
2017 extent minimum¹ 8,386,935 km² on July 8th
¹Preliminary max/min
Source: JAXA / Wipneus for July 8th 2017.




The Laptev sea ice isn't quite as shattered as I expected it to be (though cracked), but I'm struck with how melted out it is.... Heat anomoly is starting and width of the bite is almost double! A few days ago, the weather looked to be easing back a bit, but all of a sudden the latest forecast is for massive warm air influx from both the Atlantic and pacific sides with Nares export perhaps ramping up!!!


---Chris Eldridge


How long till all Arctic monitoring systems just conveniently fail and stay there?



Winds of up to 30 km/hr in the Arctic region






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