Cryosphere > Arctic sea ice

2019 sea ice area and extent data

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Wherestheice:
To a good year everyone. I feel an interesting melt season coming.

<Thanks for opening, I've edited the title, and here's the 2018 version of this thread; N.>

gerontocrat:
JAXA ARCTIC EXTENT 12,287,194 km2(January 1, 2019)

JAXA data appeared a couple of hours ago.

- Extent gain 122k, 96k above average (last 10 years) for the day, the 4th day of very high gains.
- Extent is 5th lowest in the satellite record,
- Freezing to date from minimum is 131 k (1.6%) below the 10 year average extent gain,
- On average (last 10 years) 79.9 % of the increase in extent from min to max is done.

An extra line in the table attached based on average extent increase in the last 5 years has been added. This is because extent gain in 2012-13 was so large (rebound from record low minimum) that it distorts the average. The outcome from using the 10 year average extent gain from now is a maximum of 14.20 million km2 (320k > 2017).  Using the previous 5 years's average extent gain, the resulting maximum is 14.07 million km2, (190k > 2017).

GFS indicates that overall the Arctic temperature anomaly drop from +4.5 and to zero by next Monday and stay below zero for a few days after that. However, cold and warm pulses continue travelling up the Atlantic Front to north of Novaya Zemla.
______________________________________________________________________
ps: *The 2010's average figure I use in the attached table excludes 2018. I exclude 2018 (from all JAXA and NSIDC tables and graphs) so that the difference of the current year with the 2010's decade to date average is not modified by the current year data.
______________________________________________________________________

gerontocrat:
NSIDC Total Area as at 1 January 2019 (5 day trailing average) = 11,113,007 km2

Total Area         
 11,113,007    km2      
-69,723    km2   <    2010's average.
 215,003    k   >   2017
-499,530    k   <    2000's average.
         
Total Gain    89    k   
Peripheral Seas    45    k   gain
Central Seas__    18    k   gain
Other Seas___    26    k   gain
         
Peripheral Seas         
Bering _______    9    k   gain
Baffin  Bay____    16    k   gain
Greenland____    10    k   gain
Barents ______    11    k   gain
         
CAB Seas         
Beaufort_____    4    k   gain
CAA_________   -1    k   loss
East Siberian__   -1    k   loss
Central Arctic_    10    k   gain
         
Kara_________    7    k   gain
Laptev_______   -1    k   loss
Chukchi______    1    k   gain
         
Other Seas         
Okhotsk______    8    k   gain
St Lawrence___    3    k   gain
Hudson Bay___    15    k   gain
Area gain of 89 k is below average by 28k on this day.
Area is:
- 215k greater than 2017,
- 70k less than the 2010's average,
- 500k less than the 2000's average.

Area gain switched from back to above average to low.

Other stuff
GFS indicates that overall the Arctic temperature anomaly drop from +4.5 and to zero by next Monday and stay below zero for a few days after that. However, cold and warm pulses continue travelling up the Atlantic Front to north of Novaya Zemla.

Regional variations suggest that while the main Arctic freezes solid and the Bering quickly increases in ice area and extent, the Atlantic Front may still resist icing up part of the time.

Juan C. García:
[ADS NIPR VISHOP (JAXA)] ASI Extent.

January 2nd, 2019:
     12,454,828 km2, an increase of 167,634 km2.
     2018  :P :) 2019 is now the 6th lowest on record.

El Cid:
It's a new year Juan, buckle up! 2019 is the 6th lowest not 2018

:)

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