Category: PIOMAS

PIOMAS March 2016 – Arctic Sea Ice Volume

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PIOMAS is: “Sea Ice Volume is calculated using the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS, Zhang and Rothrock, 2003) developed at APL/PSC.  Anomalies for each day are calculated relative to the average over the 1979 -2014 period for that day of the year to remove the annual cycle.”

The PIOMAS daily data is up to the end of March 2016. Both graphs are just March. First graph is from 2011. Second is from 1979.

The “death spiral” for March PIOMAS ended in 2011.

Average March Arctic PIOMAS From 2011 Sea Ice Volume by Month Since 2011

Average March Arctic PIOMAS From 1979 Sea Ice Volume by Month Since 1979

References:

Volume time series and uncertainties:
Schweiger, A., R. Lindsay, J. Zhang, M. Steele, H. Stern, Uncertainty in modeled arctic sea ice volume, J. Geophys. Res., doi:10.1029/2011JC007084, 2011

Model details:
Zhang, J.L. and D.A. Rothrock, “Modeling global sea ice with a thickness and enthalpy distribution model in generalized curvilinear coordinates“, Mon. Weather Rev., 131, 845-861, 2003

 

PIOMAS – Arctic Sea Ice Volume Up From 2010

Published on by sunshinehours1Leave a comment

PIOMAS is: “Sea Ice Volume is calculated using the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS, Zhang and Rothrock, 2003) developed at APL/PSC.  Anomalies for each day are calculated relative to the average over the 1979 -2014 period for that day of the year to remove the annual cycle.”

The PIOMAS daily data is up to the end of February 2016.

I post a lot of graphs about sea ice area and extent. Some of them show all the data. Some of them show data from 2005 because thats when the arctic sea ice extent trends levelled out.

PIOMAS also shows a leveling out, but not until 2010. I will show both the monthly graphs from 2010 and from 1979. (Click twice for larger) (Graph corrected due to incorrect units)

 

Average Arctic PIOMAS Sea Ice Volume by Month Since 2010

 

Average Arctic PIOMAS Sea Ice Volume by Month Since 1979

 

References:

Volume time series and uncertainties:
Schweiger, A., R. Lindsay, J. Zhang, M. Steele, H. Stern, Uncertainty in modeled arctic sea ice volume, J. Geophys. Res., doi:10.1029/2011JC007084, 2011

Model details:
Zhang, J.L. and D.A. Rothrock, “Modeling global sea ice with a thickness and enthalpy distribution model in generalized curvilinear coordinates“, Mon. Weather Rev., 131, 845-861, 2003