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  • 2 weeks later...
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to January 20th

The current 1 day extent is 13,955,300km2 while the 5 day mean is on 13,867,720km2

The daily anomaly (compared to 79-11) has dropped to 633,600km2, down from 748k last week. We're currently 8th lowest on record (up from 4th lowest).

The average daily increase over the last 7 days was 58.2k/day, compared to the long term average of 41.8k/day, and the average of the last 5 years of 20.8k/day.

The average long term increase over the next week is 31.5k/day, with the average of the last 5 years being 37.2k/day.

post-6901-0-25484200-1359053705_thumb.jp

  • Like 1
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to January 27th

The current 1 day extent is 14,262,060km2 while the 5 day mean is on 14,123,590km2

The daily anomaly (compared to 79-11) has dropped to 547,600km2, down from 634k last week. We're currently 8th lowest on record (same as last week).

The average daily increase over the last 7 days was 43.8k/day, compared to the long term average of 31.5k/day, and the average of the last 5 years of 37.2k/day.

The average long term increase over the next week is 33.8k/day, with the average of the last 5 years being 29.8k/day.

post-6901-0-01206100-1359393045_thumb.jp

Also, we're currently 427k off the 2011 maximum, 471k off the 2006 maximum and 528k off the 2007 maximum annual extents.

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update to February 3rd

The current 1 day extent is 14,330,720km2 while the 5 day mean is on 14,291,390km2

The daily anomaly (compared to 79-11) has dropped to 715,700km2, up from 548k last week. We're currently 7th lowest on record (down from 8th lowest last week).

The average daily increase over the last 7 days was 10.5k/day, compared to the long term average of 33.8k/day, and the average of the last 5 years of 29.8k/day.

The average long term increase over the next week is 20.7k/day, with the average of the last 5 years being 30.1k/day.

post-6901-0-57413500-1360005895_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update to February 10th

The current 1 day extent is 14,571,800km2 while the 5 day mean is on 14,460,900km2

The daily anomaly (compared to 79-11) has dropped to 619,700km2, down from 716k last week. We're currently 7th lowest on record, same as last week

The average daily increase over the last 7 days was 34.3k/day, compared to the long term average of 20.7k/day, and the average of the last 5 years of 30.1k/day.

The average long term increase over the next week is 21.1k/day, with the average of the last 5 years being 29.4k/day.

post-6901-0-94669300-1360612506_thumb.jp

We are now just 117,300km2 off the lowest recorded maximum, which was March 7th 2011.

  • Like 2
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update to February 17th

The current 1 day extent is 14,864,250km2 while the 5 day mean is on 14,719,980km2

The daily anomaly (compared to 79-11) has dropped to 475,270km2 (lowest of the year so far), down from 620k last week. We're currently 8th lowest on record, compared to 7th last week.

The average daily increase over the last 7 days was 43.0k/day, compared to the long term average of 21.1k/day, and the average of the last 5 years of 29.4k/day.

The average long term increase over the next week is 15.8k/day, with the average of the last 5 years being 10.4k/day.

post-6901-0-85611100-1361267960_thumb.jp

Up to the 17th, we've surpssed the annual maxima of 2006, 2007 and 2011. We're now 81.9k off the 2005 maximum.

In the graph below, the red line indicates the annual maximum extent for each year (right-hand Y axis) while the bars indicate the distance between that years annual maximum and the current extent (left-hand Y axis).

post-6901-0-28263300-1361268387_thumb.jp

  • Like 2
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update to February 24th

The current 1 day extent is 14,925,770km2 while the 5 day mean is on 14,788,470km2

The daily anomaly (compared to 79-11) has increased to 524,220km2 , up from 475k last week. We're currently 8th lowest on record, the same as last week.

The average daily increase over the last 7 days was 8.7k/day, compared to the long term average of 15.8k/day, and the average of the last 5 years of 10.4k/day.

The average long term increase over the next week is 4.7k/day, with the average of the last 5 years being 27.6k/day.

post-6901-0-15474400-1361818782_thumb.jp

We remain, provisionally, the 4th lowest annual maximum on record having surpassed 2011, 2007 and 2006.

We are now just 20.4k off the 2005 maximum.

post-6901-0-00695100-1361819011_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update to March 3rd

The current 1 day extent is 14,984,410km2 while the 5 day mean is on 15,052,032km2

The daily anomaly (compared to 79-11) has decreased to 489,300km2 , down from 524k last week. We're currently 5th lowest on record, down from 8th lowest last week.

The average daily increase over the last 7 days was 8.4k/day, compared to the long term average of 4.7k/day, and the average of the last 5 years of 27.6k/day.

The average long term increase over the next week is 0.4k/day, with the average of the last 5 years being -5.6k/day.

post-6901-0-45413100-1362427929_thumb.jp

During the last week, on March 1st, a peak extent of 15,097,340km2 was reached. There is a slight chance of this being the maximum for the year, but at this stage it's impossible to say. Taking the March 1st value as the preliminary maximum, the next graph compares that value to previous maxima.

post-6901-0-25084600-1362428242_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted (edited)

Update to March 10th

The current 1 day extent is 15,029,180km2 while the 5 day mean is on 14,994,916km2

The daily anomaly (compared to 79-11) has decreased to 450,600km2 , down from 489k last week. We're currently 6th lowest on record, up from 5thlowest last week.

The average daily increase over the last 7 days was 6.6k/day, compared to the long term average of 0.4k/day, and the average of the last 5 years of -5.6k/day.

The average long term increase over the next week is 0.4k/day, with the average of the last 5 years being 1.2k/day.

post-6901-0-59460500-1363114370_thumb.jp

Edited by BornFromTheVoid
  • Like 1
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Apologies for the delay, little free time these days!

Update for the week to March 17th

The current 1 day extent is 15,072,840km2 while the 5 day mean is on 15,100,186km2

The daily anomaly (compared to 79-11) has decreased to 346,900km2 , down from 451k last week. We're currently 8th lowest on record, a change from 6th lowest last week.

The average daily increase over the last 7 days was 6.2k/day, compared to the long term average of 0.4k/day, and the average of the last 5 years of 1.2k/day.

The average long term change over the next week is -11.9k/day, with the average of the last 5 years being -11.4k/day.

post-6901-0-61776200-1363807090_thumb.jp

During the last week, a new maximum sea ice extent value was reached, this was 15,169,690km2 on March 14th. There's a reasonable chance of this being the maximum for the year, which would put it at 6th lowest maximum on record.

post-6901-0-90443600-1363807373_thumb.jp

  • Like 2
  • 1 month later...
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Finally done with assignments, so I should have more free time to update this regularly during the summer. I'll try update every Sunday from now on

 

 

Update for the week to April 20th

The current 1 day extent is 14,133,650km2  while the 5 day mean is on 14,218,890km2

 

The daily anomaly (compared to 79-11) is at -386,120km2.  We're currently 9th lowest on record

The average daily loss over the last 7 days was 49.6k/day, compared to the long term average of 36.4k/day, and the average of the last 5 years of 31.6k/day.

The average long term loss over the next week is 40.3k/day, with the average of the last 5 years being 37k/day.

 

post-6901-0-78835900-1366554747_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to April 27th

The current 1 day extent is 13,779,230km2  while the 5 day mean is on 13,915,870km2

 

The daily anomaly (compared to 79-11) is at -458,670km2, and increase from -386,120km2 last week.  We're currently 7th lowest on record, a change from 9th lowest last week.

The average daily loss over the last 7 days was 50.6k/day, compared to the long term average of 40.3k/day, and the average of the last 5 years of 37k/day.

The average long term loss over the next week is 58.5k/day, with the average of the last 5 years being 68.6k/day.

 

post-6901-0-30384000-1367237536_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to May 4th

The current 1 day extent is 13,442,620km2  while the 5 day mean is on 13,503,510km2

 

The daily anomaly (compared to 79-11) is at -385,880km2, a decrease from -458,570km2 last week.  We're currently 7th lowest on record, the same as last week.


The average daily loss over the last 7 days was 48.1k/day, compared to the long term average of 58.5k/day, and the average of the last 5 years of 68.6k/day.

The average long term loss over the next week is 45.4k/day, with the average of the last 5 years being 43.9k/day.

 

post-6901-0-39318700-1367766238_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to May 11th


The current 1 day extent is 13,242,510km2  while the 5 day mean is on 13,324,430km2

 

The daily anomaly (compared to 79-11) is at -268,310km2, a decrease from -385,880km2 last week.  We're currently 13th lowest on record, an improvement from 7th lowest last week.


The average daily loss over the last 7 days was 28.6k/day, compared to the long term average of 45.4k/day, and the average of the last 5 years of 43.9k/day.

The average long term loss over the next week is 44.3k/day, with the average of the last 5 years being 53.8k/day.

 

post-6901-0-20145700-1368367556_thumb.jp

  • Like 3
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to May 18th


The current 1 day extent is 12,960,190km2  while the 5 day mean is on 13,067,970km2

 

The daily anomaly (compared to 79-11) is at -240,680km2, a decrease from -268,310km2 last week.  We're currently 13th lowest on record, the same as last week.


The average daily loss over the last 7 days was 40.3k/day, compared to the long term average of 44.3k/day, and the average of the last 5 years of 53.8k/day.

The average long term loss over the next week is 44.7k/day, with the average of the last 5 years being 55.0k/day.

 

post-6901-0-15105400-1368979028_thumb.jp

  • Like 1
Posted
  • Location: Camborne
  • Location: Camborne
Posted (edited)

Arctic long Temp. Data Series Apart from Fairbanks the apparent 'cooling' of the last few years is not obvious in this region.

 

http://www.climate4you.com/

 

Long Arctic surface annual air temperature series: Fairbanks (Alaska), Nuuk (Greenland), Akureyri (Iceland), Svalbard (Norway), Ostrov Dikson (Siberia), and Hatanga (Siberia). Annual values were calculated from monthly average temperatures. Almost unavoidably, some missing monthly data were encountered in some of the series. In such cases, the missing values were generated as either 1) the average of the preceding and following monthly values, or 2) the average for the month registered the preceding year and the following year. The thin blue line represents the mean annual air temperature, and the thick blue line is the running 5 year average. Click here to read about data smoothing. Data source: NASA Goddard Institute for Space Studies (GISS) and RimFrost. Last year shown: 2012. Last update 21 April 2013.

 

post-12275-0-42553700-1369570352_thumb.g

Edited by knocker
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted (edited)

Update for the week to May 25th


The current 1 day extent is 12,744,810km2  while the 5 day mean is on 13,806,920km2

 

The daily anomaly (compared to 79-11) is at -150,040km2, a decrease from -240,680km2 last week.  We're currently 14th lowest on record, a change from 13th lowest last week

The average daily loss over the last 7 days was 30.8k/day, compared to the long term average of 43.7k/day, and the average of the last 5 years of 55.0k/day.

The average long term loss over the next week is 53.1k/day, with the average of the last 5 years being 55.7k/day.

 

post-6901-0-32778000-1369650462_thumb.jp

Edited by pottyprof
  • 2 weeks later...
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to June 1st


The current 1 day extent is 12,339,800km2,  while the 5 day mean is on 12,468,450km2

 

The daily anomaly (compared to 79-11) is at -183,130km2, an increase from -150,040km2 last week.  We're currently 14th lowest on record, the same as last week.

The average daily loss over the last 7 days was 57.9k/day, compared to the long term average of 53.1k/day, and the average of the last 5 years of 55.7k/day.

The average long term loss over the next week is 47.1k/day, with the average of the last 5 years being 77.6k/day

 

post-6901-0-16826000-1370348625_thumb.jp

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to June 8th


The current 1 day extent is 11,971,410km2,  while the 5 day mean is on 12,083,59km2

 

The daily anomaly (compared to 79-11) is at -221,890km2, an increase from -183,130km2 last week.  We're currently 12th lowest on record, up from 14th lowest last week.

The average daily loss over the last 7 days was 52.6k/day, compared to the long term average of 47.1k/day, and the average of the last 5 years of 77.6k/day.

The average long term loss over the next week is 46.7k/day, with the average of the last 5 years being 70.2k/day

 

post-6901-0-99114200-1370791303_thumb.pn

  • Like 4
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to June 15th


The current 1 day extent is 11,632,130km2,  while the 5 day mean is on 12,666,520km2

 

The daily anomaly (compared to 79-11) is at -234,080km2, an increase from -221,890km2 last week.  We're currently 12th lowest on record, the same as last week.

The average daily loss over the last 7 days was 48.4k/day, compared to the long term average of 46.7k/day, and the average of the last 5 years of 70.2k/day.

The average long term loss over the next week is 58.4k/day, with the average of the last 5 years being 75.9k/day

 

post-6901-0-08321100-1371453784_thumb.pn

  • Like 2
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Hi guys. Can ye keep the discussion and speculation in the melt season thread please. This thread is for just data and stats, cheers.

  • Like 3
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to June 22nd


The current 1 day extent is 11,238,680km2,  while the 5 day mean is on 12,327,090km2

 

The daily anomaly (compared to 79-11) is at -218,840km2, an decrease from -234,080km2 last week.  We're currently 13th lowest on record, down from 12th lowest last week.

The average daily loss over the last 7 days was 56.2k/day, compared to the long term average of 58.4k/day, and the average of the last 5 years of 75.9k/day.

The average long term loss over the next week is 66.2k/day, with the average of the last 5 years being 97.0k/day

 

post-6901-0-20502100-1371996018_thumb.pn

Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted

Update for the week to June 29th


The current 1 day extent is 10,347,740km2,  while the 5 day mean is on 10,601,380km2

 

The daily anomaly (compared to 79-11) is at -646,640km2, an increase from -234,080km2 last week.  We're currently 8th lowest on record, compared to 13th lowest last week.

The average daily loss over the last 7 days was 127.3k/day, compared to the long term average of 66.2k/day, and the average of the last 5 years of 97.0k/day.

The average long term loss over the next week is 97.2k/day, with the average of the last 5 years being 103.2k/day.

 

post-6901-0-14391800-1372602036_thumb.gi

 

Note: The previous June graphs were occidentally off by a day (May 31-June 29), it hasn't affected any of the numbers though and the current graph is correct.

  • 2 weeks later...
Posted
  • Location: Ireland, probably South Tipperary
  • Weather Preferences: Cold, Snow, Windstorms and Thunderstorms
  • Location: Ireland, probably South Tipperary
Posted
Update for the week to July 6th
 
The current 1 day extent is 9,277,230km2,  while the 5 day mean is on 9,452,782km2
 
The daily anomaly (compared to 79-11) is at -1,035,820km2, an increase from -646,640km2 last week.  We're currently 6th lowest on record, compared to 8th lowest last week.
 
The average daily loss over the last 7 days was 146.0k/day, compared to the long term average of 97.2k/day, and the average of the last 5 years of 103.2k/day.
 
The average long term loss over the next week is 83.0k/day, with the average of the last 5 years being 97.6k/day

 

post-6901-0-71378400-1373813049_thumb.gi

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