The graph above shows Mid July to Mid August daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows on average Arctic ice extents during this period decline 2.4M km2 down to 5.8M Km2 by day 229.  2024 tracked somewhat lower than the 18-year average in late July, then in August drew near to average before slipping into deficit the last 5 days. In the end, 2024 is presently close to 2023 and 2007, ~200k km2 below the 18 year MASIE average.

Remarkably, SII is showing much larger deficits to average than MASIE does. This period began with SII having a gap of 400k km2 less ice extent than MASIE, then increased that deficit as high as 700k km2, before reporting a gap of 537k km2 on day 229, a difference of half a Wadham. The effect will be for SII to report much lower monthly averages for ice extents during July and August, prior to the annual minimum occurring in September.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH June 2024: Oceans Lead Cool Down.

The lack of acceleration in sea levels along coastlines has been discussed also.  See Observed vs. Imagined Sea Levels 2023 Update.

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 229 across the Arctic Regions, on average, this year and 2007. At this point in the year, Bering and Okhotsk seas are open water and thus dropped from the table.

Region	2024229	Day 229 Ave	2024-Ave.	2007229	2024-2007
(0) Northern_Hemisphere	5623262	5828731	-205469	5673531	-50270
(1) Beaufort_Sea	591190	698788	-107598	767181	-175991
(2) Chukchi_Sea	554701	425156	129544	253092	301609
(3) East_Siberian_Sea	641562	535416	106146	154536	487026
(4) Laptev_Sea	268971	240911	28059	284910	-15939
(5) Kara_Sea	14414	96702	-82288	201203	-186789
(6) Barents_Sea	0	21833	-21833	17229	-17229
(7) Greenland_Sea	120478	216573	-96095	310070	-189591
(8) Baffin_Bay_Gulf_of_St._Lawrence	46366	53298	-6932	75105	-28739
(9) Canadian_Archipelago	319281	399712	-80431	382407	-63126
(10) Hudson_Bay	33319	58874	-25555	89354	-56034
(11) Central_Arctic	3031923	3080445	-48523	3137188.82	-105266

The overall deficit to average is 205k km2, (3.5%).  The major deficits are in  Beaufort, Kara, Greenland Sea and CAA (Canadian Archipelago), partly offset by surpluses in Chukchi and East Siberian.

For more on the differences between MASIE and SII see this post:

Support MASIE Arctic Ice Dataset

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring ice and snow extents.

There is no charge for content on this site, nor for subscribers to receive email notifications of postings.

 

 

The graph above shows July daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows on average Arctic ice extents during July decline 2.7M km2 down to 6.9M Km2 by day 213.  2024  tracked a little higher than the 18-year average early in July, then slipped into deficit in the last 10 days.  SII was close to MASIE early in July, then diverged mid month showing up to 666k km2 lower until ending July ~300k km2 less extent than MASIE.  2023 was higher than average, while 2007 ended ~ 540k km2 in deficit to average.  2020 ice ended nearly 1 Wadham or 1M km2 in deficit.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH June 2024: Oceans Lead Cool Down.

The lack of acceleration in sea levels along coastlines has been discussed also.  See Observed vs. Imagined Sea Levels 2023 Update.

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 213 across the Arctic Regions, on average, this year and 2007. At this point in the year, Bering and Okhotsk seas are open water and thus dropped from the table.

Region	2024213	Day 213 Ave.	2024-Ave.	2007213	2024-2007
(0) Northern_Hemisphere	6634637	6882380	-247743	6344860	289777
(1) Beaufort_Sea	717847	791600	-73754	760576	-42729
(2) Chukchi_Sea	702720	534093	168628	382350	320370
(3) East_Siberian_Sea	760894	740772	20122	445385	315509
(4) Laptev_Sea	223615	368247	-144631	314382	-90767
(5) Kara_Sea	136159	163171	-27012	239232	-103073
(6) Barents_Sea	454	31406	-30952	23703	-23249
(7) Greenland_Sea	237168	294526	-57358	324737	-87570
(8) Baffin_Bay_Gulf_of_St._Lawrence	170245	145062	25183	94179	76066
(9) Canadian_Archipelago	454695	540106	-85411	510063	-55368
(10) Hudson_Bay	129434	133138	-3704	93655	35780
(11) Central_Arctic	3098283	3138628	-40345	3154837	-56554

The overall deficit to average is 248k km2, (4%).  The major deficits are in Laptev, Beaufort and CAA (Canadian Archipelago), while Kara is the only region with a large surplus.

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring ice and snow extents.

There is no charge for content on this site, nor for subscribers to receive email notifications of postings.

 

The animation shows Arctic ice extents on Day 197 for years 2007 to 2024. The regions vary in the amounts of ice cover Mid July, larger overall in recent years and with more Eurasian ice.

The graph below shows June daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows on average Arctic ice extents decline from a maximum of 10.8M km2 on day 167 down to 8.3M Km2 by day 197.  2024  tracked near the 18-year average in June, then was in surplus during July before ending slightly above average.  SII was somewhat higher than MASIE most of June and July until sliding into deficit mid July.  2007 was somewhat below average throughout, while 2020 ice started and ended much in deficit.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH June 2024: Oceans Lead Cool Down.

The lack of acceleration in sea levels along coastlines has been discussed also.  See Observed vs. Imagined Sea Levels 2023 Update.

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 197 across the Arctic Regions, on average, this year and 2007. At this point in the year, Bering and Okhotsk seas are open water and thus dropped from the table.

Region	2024197	Day 197 ave	2024-Ave.	2007197	2024-2007
(0) Northern_Hemisphere	8338669	8258593	80076	7963047	375622
(1) Beaufort_Sea	832210	863030	-30819	825810	6400
(2) Chukchi_Sea	742694	633081	109613	550547	192147
(3) East_Siberian_Sea	965134	908579	56555	729250	235883
(4) Laptev_Sea	419331	552028	-132697	525724	-106393
(5) Kara_Sea	484826	330804	154022	401874	82952
(6) Barents_Sea	9178	54630	-45452	60637	-51458
(7) Greenland_Sea	440448	396477	43970	434750	5698
(8) Baffin_Bay_Gulf_of_St._Lawrence	366786	298193	68594	314783	52003
(9) Canadian_Archipelago	662877	707225	-44348	711889	-49013
(10) Hudson_Bay	261980	338408	-76428	183962	78018
(11) Central_Arctic	3149696	3172256	-22560	3222022	-72326

The overall surplus to average is 80k km2, (1%).  The only major deficits are in Laptev, and secondly in Hudson Bay, going to open water soon anyway.  That is more than offset by surpluses elsewhere, especially in Chukchi, Kara and Baffin Bay.  Note that 2007 had 375k m2 less ice extent at July 15. 

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring ice and snow extents.

There is no charge for content on this site, nor for subscribers to receive email notifications of postings.

 

The graph above shows June daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows on average Arctic ice extents decline from a maximum of 11.6M km2 on day 153 down to 9.7M Km2 by day 182.  2024 started slightly higher, then tracked below the 18-year average, before ending above average.  SII was somewhat higher than MASIE most of June until ending nearly the same. 2007 melted faster than average, while 2020 ice started and ended much in deficit.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH May 2024: NH Cooling by Land and Sea.

The lack of acceleration in sea levels along coastlines has been discussed also.  See Observed vs. Imagined Sea Levels 2023 Update.

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 182 across the Arctic Regions, on average, this year and 2007. At this point in the year, Bering and Okhotsk seas are open water and thus dropped from the table.

Region	2024182	Day 182 Ave	2024-Ave.	2007182	2024-2007
(0) Northern_Hemisphere	9829571	9662331	167240	9379951.31	449620
(1) Beaufort_Sea	921615	919484	2132	912323.51	9292
(2) Chukchi_Sea	832358	723506	108851	650489.98	181868
(3) East_Siberian_Sea	1028480	1008708	19772	878945.14	149534
(4) Laptev_Sea	674023	696937	-22914	652206.83	21816
(5) Kara_Sea	733875	529007	204868	600511.02	133364
(6) Barents_Sea	100803	105335	-4531	112929.89	-12127
(7) Greenland_Sea	501023	496290	4733	546984.13	-45961
(8) Baffin_Bay_Gulf_of_St._Lawrence	591648	512555	79093	427145.99	164502
(9) Canadian_Archipelago	717214	776159	-58946	765307.59	-48094
(10) Hudson_Bay	505046	671642	-166596	617582.73	-112537
(11) Central_Arctic	3216938	3205266	11672	3210046.66	6891

The overall surplus to average is 167k km2, (2%).  The only major deficit is in Hudson Bay, going to open water next month anyway.  That is more than offset by surpluses everywhere, especially in Chukchi, Kara and Baffin Bay.  Note that 2007 had almost half a Wadham of less ice extent at June 30. 

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring ice and snow extents.

There is no charge for content on this site, nor for subscribers to receive email notifications of postings.

 

The animation shows  Arctic ice melting season picking up first half of April 2024.  Typically, the Pacific side goes to water first, this year Okhotsk (top left) is ahead of schedule.  Also Baffin Bay (bottom right) is opening up early. Elsewhere Arctic drift ice remains, and Barents Sea ice (top center) is well above average for mid April.

The graph below shows mid-March to mid-April daily ice extents for 2024 compared to 18 year averages, and some years of note.

 

The black line shows on average Arctic ice extents decline from a maximum near 14.9M km2 on day 76 down to ~14.1M Km2 by day 105. Exceptionally 2024 started with 15.1M km2 and exceeded the 18-year average throughout.  SII was somewhat lower than MASIE in most of April until ending nearly the same. Both 2021 melted faster than average, while 2006 ice started and ended much in deficit.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH February 2024: SH Saves Global Warming.

The lack of acceleration in sea levels along coastlines has been discussed also.  See USCS Warnings of Coastal Flooding

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 105 across the Arctic Regions, on average, this year and 2006.

Region	2024105	Day 105 Ave	2024-Ave.	2006105	2024-2006
(0) Northern_Hemisphere	14244041	14119733	124309	13589226	654815
(1) Beaufort_Sea	1070983	1069820	1163	1068683	2301
(2) Chukchi_Sea	966006	964681	1325	965591	415
(3) East_Siberian_Sea	1087137	1085571	1567	1083591	3546
(4) Laptev_Sea	897845	893528	4316	896528	1317
(5) Kara_Sea	935023	922957	12066	912379	22645
(6) Barents_Sea	856908	608844	248064	495112	361796
(7) Greenland_Sea	802111	653203	148908	599062	203049
(8) Baffin_Bay_Gulf_of_St._Lawrence	1179443	1279861	-100418	1042266	137178
(9) Canadian_Archipelago	854860	852951	1909	851056	3804
(10) Hudson_Bay	1231701	1247129	-15428	1235951	-4250
(11) Central_Arctic	3247180	3233303	13877	3168930	78250
(12) Bering_Sea	639179	647219	-8040	667951	-28772
(13) Baltic_Sea	31107	44493	-13386	84568	-53461
(14) Sea_of_Okhotsk	442660	610735	-168075	507143	-64483

The overall surplus to average is 124k km2, (1%).  The only major deficits are in Baffin Bay and in Sea of Okhotsk, the latter going to open water quite early.  Those are more than offset by surpluses everywhere, especially in Barents and Greenland seas.  In fact, Barents is 120% of  its 2023 maximum.

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring Arctic ice extents.

There is no charge for content on this site, nor for subscribers to receive email notifications of postings.

The animation shows end of March Arctic ice extents on day 91 over the last 19 years (length of MASIE dataset). Of course central Arctic basins are frozen solid, and the fluctuations are visible on the marginal basins both the Atlantic side (right) and the Pacific (left). Note the higher extents in 2012, followed by lesser ice, now overcome by 2024.

The graph below shows Monthly averages for March since 2007.  March is the maximum month in the annual cycle in contrast to September being the minimum Arctic ice extents. Note the low 2007 extents followed by several years over15M km2, then lesser extents 2015 to 2018, and increasing extents up to 2024 nearly averaging 15M for the month.

 

The graph below shows March daily ice extents for 2024 compared to 18 year averages, and some years of note.

 

The black line shows during March on average Arctic ice extents nearly reach 15 Wadhams (15M km2) on Day 62, March 2.  A slow decline is normal until Day 91, March 31.  However, that period in 2024 saw Arctic ice go over 15M on day 68 and remain there until day 79. Afterward both MASIE and SII show above average extents to month end.  2006 was the first year in this dataset and ended March ~800k km2 in deficit to average.  2021 and 2023 were ~200k below average on Day 91 while 2024 ended 266k km2 surplus ice.   As usual in transitional months like March and September, SII (Sea Ice Index) shows a similar pattern with generally lower extents.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH February 2024: SH Saves Global Warming.

The lack of acceleration in sea levels along coastlines has been discussed also.  See USCS Warnings of Coastal Flooding

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 91 across the Arctic Regions, on average, this year and 2006.

Region	2024091	Day 91 ave	2024-Ave.	2006091	2024-2006
(0) Northern_Hemisphere	14854967	14589377	265590	13821470	1033497
(1) Beaufort_Sea	1070983	1070226	758	1068683	2301
(2) Chukchi_Sea	966006	963401	2606	959091	6915
(3) East_Siberian_Sea	1087137	1086151	987	1084120	3017
(4) Laptev_Sea	897845	896053	1792	896510	1335
(5) Kara_Sea	935023	919656	15367	910487	24536
(6) Barents_Sea	845789	657875	187914	622588	223201
(7) Greenland_Sea	771533	661909	109624	601310	170223
(8) Baffin_Bay_Gulf_of_St._Lawrence	1238205	1384413	-146208	1003875	234330
(9) Canadian_Archipelago	854860	853089	1772	851691	3169
(10) Hudson_Bay	1260903	1255353	5551	1240389	20514
(11) Central_Arctic	3248013	3235452	12561	3239349	8664
(12) Bering_Sea	724493	703487	21006	658979	65514
(13) Baltic_Sea	50165	61636	-11471	114622	-64457
(14) Sea_of_Okhotsk	900660	831057	69602	558027	342633

The overall surplus to average is 266k km2, (2%).  The only major deficit is in Baffin Bay, more than offset by surpluses everywhere, especially in Okhotsk, Barents and Greenland seas.  Note Arctic ice yesterday was more than a Wadham greater than the same day in 2006.

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring Arctic ice extents.

 

The animation shows growing Arctic ice extents over the last two weeks. Of course central Arctic basins are frozen solid, and the additions are visible on both the Atlantic side (right) and the Pacific (left).

The graph below shows March daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows during March on average Arctic ice extents nearly reach 15 Wadhams (15M km2) on Day 62, March 2.  A slow decline is normal until Day 75, March 15.  However, that period in 2024 saw Arctic ice increase 430k km2, nearly half a Wadham.  Note also that this year ice extents rose above 15M already in February, and now in March ice has been well above that threshold for the last week.  2006 was the first year in this dataset and on Day 75 was 704k km2 less than yesterday.  As usual in transitional months like March and September SII (Sea Ice Index) shows a similar pattern with generally lower extents.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH January 2024: Ocean Warm, Land Cooling.

The lack of acceleration in sea levels along coastlines has been discussed also.  See USCS Warnings of Coastal Flooding

Also, a longer term perspective is informative:

The table below shows the distribution of Sea Ice on day 75 across the Arctic Regions, on average, this year and 2006.

Region	2024075	Day 75 Ave	2024-Ave.	2006075	2024-2006
(0) Northern_Hemisphere	15124987	14895040	229947	14420679	704309
(1) Beaufort_Sea	1070983	1070317	667	1069711	1273
(2) Chukchi_Sea	966006	965891	115	964227	1779
(3) East_Siberian_Sea	1087137	1087110	27	1086702	435
(4) Laptev_Sea	897845	897837	8	897773	71
(5) Kara_Sea	935023	920555	14469	921428	13595
(6) Barents_Sea	671826	643180	28646	646196	25630
(7) Greenland_Sea	771468	621747	149721	613161	158308
(8) Baffin_Bay_Gulf_of_St._Lawrence	1336897	1529678	-192781	1134817	202080
(9) Canadian_Archipelago	854860	853214	1646	852715	2145
(10) Hudson_Bay	1260903	1258048	2855	1251360	9543
(11) Central_Arctic	3243865	3222218	21647	3244243	-378
(12) Bering_Sea	723227	735481	-12254	635252	87975
(13) Baltic_Sea	78741	80321	-1580	175063	-96322
(14) Sea_of_Okhotsk	1215262	990338	224924	874372	340890

The overall surplus to average is 230k km2, (2%).  The only major deficit is in Baffin Bay, more than offset by surpluses in Okhotsk and Greenland seas.  Everywhere else is maxed out.

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring Arctic ice extents.