The next two weeks will determine where this year’s minimum will rank compared to recent years. And much will depend upon storm activity which breaks up ice edges, compacts ice chunks and transports ice out through Fram Strait where it melts in the warmer Norwegian Sea.

We have two recent examples in 2012 and 2016. The Great Arctic Cyclone of 2012 produced the lowest minimum of the decade. The NASA photo of the storm is above.  The image below presents the impact of the 2012 storm upon ice extents from mid-August to mid-September annual minimum.  (Click on image to enlarge.)

In contrast, a more normal, non-stormy year is represented by 2014.  Progression of ice extents for 2014 is shown below.

Then again in 2016 several sizable Arctic storms struck late August.  The image below shows cyclonic winds (center left) over the Arctic Ocean on August 22, 2016.

The storms effect on 2016 sea ice appears in the image below.

Summary

Arctic ice extents these three years were not far apart mid-August, but they ended the melt season quite differently.  The Great Arctic Cyclone made 2012 the lowest of the decade, bottoming out at 3.4M km2.  2016 August storms also produced a low annual minimum of 4.2M km2.  In contrast, the absence of major storms in 2014 resulted in a much higher September minimum of 5.13M km2.  All of these compare to 2007 minimum of 4.05M km2, with no major storms reported.

It is difficult to extract a climate signal out of fluctuating ice extent minimums when they are so dependent on the vagaries of weather events.  It also means that anything can happen in the next few weeks.

 

 

 

 

 

 

The extent of Arctic ice fell to a new wintertime low in March 2017. But springtime ice persisted and extents since June are hanging around the decadal average.  Below shows the last 27 days through yesterday, August 11, 2017.

For this period 2017 was mostly average or higher, continuing into August. This year is now almost 300k km2 greater than 2016 and exceeds 2007 by 600k km2.  SII 2017 is also 600k km2 lower.

As we shall see, this year’s extents are in surplus on the Atlantic side, offset by deficits on the Pacific side.  The image compares day 223 with the same day in 2007.

The Table compares 2017 day 223 ice extents with the decadal average and 2007.

Region	2017223	Day 223 Average	2017-Ave.	2007223	2017-2007
(0) Northern_Hemisphere	6295153	6338630	-43477	5690646	604507
(1) Beaufort_Sea	646803	740583	-93779	767724	-120921
(2) Chukchi_Sea	342601	479258	-136657	261771	80831
(3) East_Siberian_Sea	411714	663564	-251849	207590	204124
(4) Laptev_Sea	430221	329873	100349	310764	119458
(5) Kara_Sea	140411	123400	17011	215854	-75443
(6) Barents_Sea	60001	28883	31118	15996	44005
(7) Greenland_Sea	236735	253185	-16450	286393	-49658
(8) Baffin_Bay_Gulf_of_St._Lawrence	207230	71011	136219	83942	123288
(9) Canadian_Archipelago	527348	439371	87977	361883	165465
(10) Hudson_Bay	70437	87621	-17184	94262	-23825
(11) Central_Arctic	3220493	3120642	99851	3083211	137282

Deficits to average are in the BCE region, and surpluses appear almost everywhere else.  Ice is particularly strong in Laptev, Baffin, CAA and the Central Arctic.

The graph below shows Barents this year continues to be above average but fell behind the record year of 2014. After pausing at 70K km2, it dipped to 50k km2, then bounced back to 60k yesterday.

The black line is average for the last 11 years.  2007 in purple appears close to an average year.  2014 had the highest annual extent in Barents Sea, due to higher and later maximums, holding onto ice during the summer, and recovering quickly.  In contrast, 2016 was the lowest annual extent, melting out early and recovering later.  2017 in blue started out way behind, but grew rapidly to reach average, and then persisted longer to exceed even 2014.  It will be important to see when the recovery of ice begins.

For more on why Barents Sea matters see Barents Icicles

 

We are about 50 days away from the annual Arctic ice extent minimum, which typically occurs on or about day 260 (mid September). Some take any year’s slightly lower minimum as proof that Arctic ice is dying, but the image below shows day 260 over the last 10 years. The Arctic heart is beating clear and strong.

Over this decade, the Arctic ice minimum has not declined, but looks like fluctuations around a plateau since 2007. By mid-September, all the peripheral seas have turned to water, and the residual ice shows up in a few places. The table below indicates where we can expect to find ice this next September.

Arctic Regions	2007	2010	2012	2014	2015	2016	Average
Central Arctic Sea	2.67	3.16	2.64	2.98	2.93	2.92	2.91
BCE	0.50	1.08	0.31	1.38	0.89	0.52	0.87
LKB	0.29	0.24	0.02	0.19	0.05	0.28	0.17
Greenland & CAA	0.56	0.41	0.41	0.55	0.46	0.45	0.46
B&H Bays	0.03	0.03	0.02	0.02	0.10	0.03	0.03
NH Total	4.05	4.91	3.40	5.13	4.44	4.20	4.45

BCE (Beaufort, Chukchi and East Siberian) on the Asian side are quite variable as the largest source of ice other than the Central Arctic itself.   Greenland Sea and CAA (Canadian Arctic Archipelago) together hold almost 0.5M km2 of ice at minimum, fairly consistently.   LKB are the European seas of Laptev, Kara and Barents, a smaller source of ice, but a difference maker some years, as Laptev was in 2016.  Baffin and Hudson Bays are almost inconsequential.

For context, note that the average maximum has been 15M, so on average the extent shrinks to 30% of the March high before growing back the following winter.

 

In July, the Northern Sea Route (NSR) starts to open for commercial shipping. As previously reported here Arctic Ice Takes Revenge, a convoy of Russian cargo ships including icebreakers were trapped by January ice and were stranded in Pevek. May 30 they were able to leave port, but making it home to Arkhangelsk is still uncertain since plenty of ice remains in Eastern Siberian and Laptev seas.

More about the NSR shipping situation at the end of this post.

The image below shows the evolution of ice extents since 2007 along the Northern Sea Route.  The principal challenge for shipping is Laptev sea, and secondarily East Siberian and Kara seas.

The graph below shows Arctic ice extents comparing 2017 to the eleven-year average, to 2016 and 2007, as well as SII estimates.

This year ice extents are ~200k km2 higher than average at day 208, 660k km2 greater than 2016, and 760k km2 surplus above 2007.  MASIE, with its higher resolution mapping shows 600k km2 more ice than Sea Ice Index (SII).

The table below presents the ice extents in various regions of the Arctic Ocean.

Region	2017208	Day 208 Average	2017-Ave.	2007208	2017-2007
(0) Northern_Hemisphere	7616280	7412179	204101	6854322	761958
(1) Beaufort_Sea	817086	800703	16383	731315	85771
(2) Chukchi_Sea	501448	576407	-74959	410291	91157
(3) East_Siberian_Sea	655273	859194	-203922	611838	43435
(4) Laptev_Sea	595803	493098	102705	346484	249320
(5) Kara_Sea	234885	216677	18208	263819	-28935
(6) Barents_Sea	74162	33989	40173	38450	35713
(7) Greenland_Sea	429112	337523	91590	350141	78971
(8) Baffin_Bay_Gulf_of_St._Lawrence	351594	169554	182040	226232	125362
(9) Canadian_Archipelago	584766	603827	-19062	585307	-542
(10) Hudson_Bay	153623	172129	-18506	114225	39398
(11) Central_Arctic	3217386	3146830	70556	3174877	42508

The only sizeable 2017 deficits to decadal average are in Chukchi and East Siberian seas.  Ice surpluses this year offset the losses, especially in Laptev, Greenland Sea, Baffin Bay and the Central Arctic.  Barents has been holding steady at the highest minimum of the decade, set by 2014.  2007 is eclipsed by 2017 in almost every region.

Varying Views of the Northern Sea Route

Northern Sea Route Information Office

According to the data provided by the Northern Sea Route Information Office, traffic volume in 2016 has increased by 35% in comparison with 2015. However the traffic remained low with only 19 vessels using the route, far from the record set in 2013 with 71 vessels. Steep downturn started in 2014, the amount of cargo transported in transit dropping 77 per cent compared to the previous year.

The navigation season for transit passages on NSR starts approximately at the beginning of July and lasts through to the second half of November. There are no specific dates for commencement and completion of navigation; it all depends on particular ice conditions. In 2011 the navigation season on the NSR seaways for large vessels constituted 141 days in total, i.e. more than 4.5 months. In recent years quite easy ice conditions have been observed and that offers more considerable opportunities for operation at the NSR seaways. All NSR seaways are currently located in the area of one-year ice. In the arctic conditions one-year ice grows approximately up to 1.6 metres. Arktika-type icebreaker can open passages through up to 2.3m thick ice. In early July, at the beginning of navigation ice is not pressurized. The ice is broken and easily moved through. . . Therefore, in the current ice conditions vessels can navigate from July until December.

Malte Humpert, the strategic director and founder of the Arctic Institute

The NSR will not become a major shipping route. Not today and not in 2030 – or even 2050. As long as there is winter ice, which makes the Arctic Ocean unnavigable for part of the year, it will not be suitable for regular transit traffic.

There may be occasional voyages, as we have seen over the past few years, delivering timber from Finland to Canada, or Norwegian fish and LNG to Japan or iron ore to China. But the NSR will not see containerized cargo on which global trade operates. There are a host of reasons for that, the biggest ones being lack of schedule reliability and seasonability of the route, lack of ports of call and increased insurance premiums on the NSR over Suez.

As a comparison: the Suez Canal sees around 18,000 transits per year, the Panama Canal around 15,000, the Straits of Malacca around 65,000.

In the past five years taken together, the NSR saw around 200 transits, with most vessels being tiny compared to the giant container ships and bulk carriers passing through the world’s shipping hubs.

The 259 meters long, 34 meter wide «Shturman Albanov» in early May arrived in Murmansk with another load of oil from Novy Port, the new oil field in the Yamal Peninsula. It marked the 5th million ton of oil delivered from the field, operator Gazprom Neft informs.

In the course of the last 12 months, a total of 196 shiploads of oil have made from Yamal to Murmansk. Shipping company Sovcomflot now has three brand new Arc7 ice class tankers dedicated to shipments from the new Arctic field.

 

July is showing again the resilience of Arctic ice this year. The graph below shows 2017 extents for the first 19 days of July compared to the average for the previous 11 years, to 2016, to 2007 and the SII (Sea Ice Index) estimates for 2017.

The graph shows 2017 holding to the decadal average and just yesterday dropping below 8M km2, one day ahead of average.  Meanwhile the other extents are much lower than 2017: 2016 is down 357k km2, 2007 is 379k km2 down, and SII shows 2017 480k km2 less than MASIE day 200.

As we shall see, this year’s extents are in surplus on the Atlantic side, offset by deficits on the Pacific side and in Hudson Bay.  The image shows the evolution of Arctic ice from 2007 to this year for day 200.

The Table compares 2017 day 200 ice extents with the decadal average and 2007

Region	2017200	Day 200 Average	2017-Ave.	2007200	2017-2007
(0) Northern_Hemisphere	7997823	8064957	-67133	7618029	379795
(1) Beaufort_Sea	806596	819503	-12906	797272	9324
(2) Chukchi_Sea	514591	619294	-104704	488952	25638
(3) East_Siberian_Sea	744800	937942	-193142	707353	37447
(4) Laptev_Sea	666317	584009	82308	455463	210854
(5) Kara_Sea	321934	310630	11304	377648	-55714
(6) Barents_Sea	74053	45893	28160	55933	18120
(7) Greenland_Sea	478308	388587	89721	375816	102492
(8) Baffin_Bay_Gulf_of_St._Lawrence	371429	238537	132893	278443	92986
(9) Canadian_Archipelago	624373	685089	-60717	686749	-62376
(10) Hudson_Bay	172045	258697	-86652	170690	1355
(11) Central_Arctic	3222235	3173093	49143	3221912	323

2007 overall ice extent on day 200 was lower by 380k km2, 2017 showing surpluses everywhere except Kara and CAA (Canadian Arctic Archipelago).  Compared to the decadal average, the 2017 larger deficits are in the Pacific ( Chukchi and East Siberian) and in Canada (Hudson Bay and CAA).  These are offset by above average extents elsewhere, especially in Laptev, Greenland, Baffin and Central Arctic. Barents is still surplus to average, but has now fallen behind 2014 as the highest in the last decade.

The black line is average for the last 11 years.  2007 in purple appears close to an average year.  2014 had the highest annual extent in Barents Sea, due to higher and later maximums, holding onto ice during the summer, and recovering quickly.  In contrast, 2016 was the lowest annual extent, melting out early and recovering later.  2017 in blue started out way behind, but grew rapidly to reach average, and then persisted longer to exceed even 2014 before falling behind just recently.

For more on why Barents Sea matters see Barents Icicles

 

The extent of Arctic ice fell to a new wintertime low in March 2017. But springtime ice persisted and June and July are hanging around the decadal average.

The graph shows the last two weeks ending day 190, July 9, 2017.  2016 and 2017 are nearly average and lower than 9M km2, while 2007 is about 150k km2 down, and SII 2017 even lower. The recent drop was largely due to Hudson Bay going to open water in just ten days (images at Ten Days in Hudson Bay).

As we shall see, this year’s extents are in surplus on the Atlantic side, offset by deficits on the Pacific side and in Hudson Bay.  The image compares day 190 with one year ago.

The Table compares 2017 day 190 ice extents with the decadal average and 2007

Region	2017190	Day 190 Average	2017-Ave.	2007190	2017-2007
(0) Northern_Hemisphere	8877716	8991896	-114181	8732146	145570
(1) Beaufort_Sea	825960	866156	-40196	860404	-34443
(2) Chukchi_Sea	563718	683345	-119626	609005	-45287
(3) East_Siberian_Sea	868691	1000309	-131618	871751	-3060
(4) Laptev_Sea	719324	674515	44809	647038	72285
(5) Kara_Sea	538340	437243	101097	499369	38971
(6) Barents_Sea	125872	69548	56324	77180	48692
(7) Greenland_Sea	563021	450768	112253	475611	87410
(8) Baffin_Bay_Gulf_of_St._Lawrence	419134	364194	54941	379529	39606
(9) Canadian_Archipelago	702592	750592	-48000	743621	-41030
(10) Hudson_Bay	306542	499414	-192873	360041	-53499
(11) Central_Arctic	3243319	3183825	59494	3205488	37831

The deficits in BCE (Beaufort, Chukchi, East Siberian) are offset by surpluses elsewhere.  2017 would be above average were it not for the 193k km2 deficit in Hudson Bay.

The graph below shows Barents this year continues to be above average matching the record year of 2014.  It will be interesting to see if 2017 hits its minimum around day 210 like 2014 did.

 

The black line is average for the last 11 years.  2007 in purple appears close to an average year.  2014 had the highest annual extent in Barents Sea, due to higher and later maximums, holding onto ice during the summer, and recovering quickly.  In contrast, 2016 was the lowest annual extent, melting out early and recovering later.  2017 in blue started out way behind, but grew rapidly to reach average, and then persisted longer to exceed even 2014.  It may yet beat out 2014 as the highest in the last 11 years.

For more on why Barents Sea matters see Barents Icicles

 

The extent of Arctic ice fell to a new wintertime low in March 2017. But springtime ice persisted and in June is hanging around the decadal average.

The first half of June this year’s extent was above the decadal average despite early melting in Bering and Okhotsk Seas,  Those two Pacific basins are now ice-free, typical for end of June.  Presently 2017 is tied with 2016 and 2007 about 200k km2 below average.  The recent drop was largely due to Hudson Bay going to open water in just ten days (images at Ten Days in Hudson Bay).

For the month, average extent in 2017 was 11M km2 compared to the the decadal average of 10.9M km2, ranking this year fifth since 2006.  SII 2017 average for June was 10.7M km2 and is presently showing 200k km2 less ice than MASIE does with its higher resolution.  During June more than 2M km2 ice extent was lost and presently stands at 65% of the March maximum.

The Table compares 2017 day 181 ice extents with the decadal average and 2007.

Region	2017181	Day 181 Average	2017-Ave.	2007181	2017-2007
(0) Northern_Hemisphere	9620537	9846173	-225636	9672969	-52433
(1) Beaufort_Sea	855383	920779	-65397	939209	-83826
(2) Chukchi_Sea	614011	743161	-129151	670088	-56077
(3) East_Siberian_Sea	926510	1029639	-103129	901963	24547
(4) Laptev_Sea	788796	734392	54403	658742	130053
(5) Kara_Sea	585573	563477	22096	657478	-71904
(6) Barents_Sea	177110	112663	64447	130101	47010
(7) Greenland_Sea	575056	518393	56663	548399	26657
(8) Baffin_Bay_Gulf_of_St._Lawrence	489797	497536	-7739	450461	39336
(9) Canadian_Archipelago	775934	777916	-1982	773611	2323
(10) Hudson_Bay	585228	705394	-120166	718441	-133212
(11) Central_Arctic	3245272	3210630	34642	3218999	26273
(12) Bering_Sea	0	11808	-11808	981	-981
(13) Baltic_Sea	0	6	-6	0	0
(14) Sea_of_Okhotsk	695	18917	-18222	2983	-2288

The pattern continues with seas on the Pacific side showing deficits to average, while Atlantic Arctic seas show surpluses.  Bering and Okhotsk averages are still 30k km2 higher but will soon disappear.  The noticeable deficits are in BCE (Beaufort, Chukchi and East Siberian) and in Hudson Bay.

Barents Sea demonstrates the surplus of 2017 sea ice extents inside the Arctic Circle.  The graph below shows Barents this year continues to be above average matching the record year of 2014.

The black line is average for the last 11 years.  2007 in purple appears close to an average year.  2014 had the highest annual extent in Barents Sea, due to higher and later maximums, holding onto ice during the summer, and recovering quickly.  In contrast, 2016 was the lowest annual extent, melting out early and recovering later.  2017 in blue started out way behind, but grew rapidly to reach average, and then persisted longer to exceed even 2014.  It may yet beat out 2014 as the highest in the last 11 years.

For more on why Barents Sea matters see Barents Icicles

 

Hudson Bay is providing a great example how ice extents can change dramatically in such a relatively shallow basin near the Arctic circle.  Last December 2016 some concerns were expressed about the lack of ice in Hudson Bay, which were suddenly overcome in ten days starting December 9.  Watch:

Polar bears of course were delighted to have a white Christmas.

Now fast-forward to this spring 2017 when ice was persisting strongly in both Baffin and Hudson Bays. Starting ten days ago on June 18 Summer is showing us how quickly goes the opposite effect, including  a major meltdown the last two days.  On the right side you can see Newfoundlanders are finally rid of their ice.

For the record, Hudson Bay grew 663k km2 of ice in ten December days, and it lost 474k km2 of ice in these last ten days of June.

Don’t worry about the polar bears, they also love to swim.

There is no predicting the Arctic ice situation week in and out, though many are trying.  The polar bears adapt and so shall we.  Meanwhile, it is a joy watching to see what happens.

Three weeks into June, Arctic ice is still plentiful  The graph below show ice extents up to yesterday, June 23, 2017, day 174.

After a dip, 2017 is again above the decadal average, 300k km2 greater than 2007, and 500k km2 larger than 2016.  SII 2017 is presently showing 400k km2 less ice than MASIE does with its higher resolution.  2016 went below 10M km2 for the first time on its way to an annual minimum of 4.2M in September.

Barents Sea shows a surplus of 2017 sea ice extents inside the Arctic Circle.  The graph below shows Barents this year compared to average and other years.

The black line is average for the last 11 years.  2007 in purple appears close to an average year.  2014 had the highest annual extent in Barents Sea, due to higher and later maximums, holding onto ice during the summer, and recovering quickly.  In contrast, 2016 was the lowest annual extent, melting out early and recovering later.  2017 in blue started out way behind, but grew rapidly to reach average, and then persisted longer to exceed even 2014.  It may yet beat out 2014 as the highest in the last 11 years.

What a difference a year makes.

The table below shows day 174 ice extents in total and by regions for 2017 compared to the decadal average and 2007.

Region	2017174	Day 174 Average	2017-Ave.	2007174	2017-2007
(0) Northern_Hemisphere	10526281	10452265	74016	10222886	303395
(1) Beaufort_Sea	879223	950985	-71762	937004	-57781
(2) Chukchi_Sea	654738	779757	-125019	702860	-48122
(3) East_Siberian_Sea	995761	1050504	-54742	991145	4616
(4) Laptev_Sea	802192	761406	40785	698410	103781
(5) Kara_Sea	684120	650542	33578	687443	-3323
(6) Barents_Sea	223133	150741	72392	206816	16317
(7) Greenland_Sea	558685	549299	9386	549654	9031
(8) Baffin_Bay_Gulf_of_St._Lawrence	713168	627004	86164	624502	88666
(9) Canadian_Archipelago	788679	790846	-2167	780041	8637
(10) Hudson_Bay	961113	880059	81054	810482	150632
(11) Central_Arctic	3245726	3213273	32452	3219126	26599
(12) Bering_Sea	3489	21931	-18442	5743	-2254
(13) Baltic_Sea	0	9	-9	0	0
(14) Sea_of_Okhotsk	15063	24399	-9335	7983	7080

You can see that Pacific melting is producing deficits to average that are more than offset by surpluses elsewhere.  Bering and Okhotsk started first, but are now inconsequential.  BCE ( Beaufort, Chukchi and East Siberian) combined are about 250k km2  below average.  On the Atlantic side, the largest surpluses appear in Barents, Baffin and Hudson Bay, while the Central Arctic is still at its annual maximum.

For more on why Barents Sea matters see Barents Icicles

Meanwhile, some Newfoundland harbours are still full of ice.