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Naval Research Laboratory

HYCOM Consortium for Data-Assimilative Ocean Modeling

Real-time 1/12° Arctic Cap HYCOM/CICE/NCODA Nowcast/Forecast System (ACNFS) with NAVGEM (1.2) atmospheric forcing

Arctic Cap Nowcast/Forecast System (ACNFS)

Experiment Number

Date of Update


Expt_03.5 1 January 2012 NOGAPS atmospheric forcing

08 August 2013

02 October 2013
NAVGEM 1.1 atmospheric forcing
Expt_03.9 08 April 2014 NAVGEM 1.2 atmospheric forcing
Expt_04.0 02 February 2015 NAVGEM 1.2 atmospheric forcing
Includes assimilation of blended high resolution AMSR2/IMS ice concentration.
Starting on 5 May 2015 erroneous SST observations over ice covered regions were inadvertently assimilated warming the underlying ocean. This caused excessive ice melting and a freshening of the surface salinity.
Expt_04.1 1 May 2015 NAVGEM 1.2 atmospheric forcing
Initialized from expt_04.0 on May 1 2015 witholding the erroneous SST observations.
Expt_04.2 18 April 2016 NAVGEM 1.3 atmospheric forcing

System information

Arctic Beaufort

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