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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 atmospheric forcing
As of 30 Sept 2017, ACNFS will be replaced by the Global Ocean Forecast System (GOFS 3.1). Daily Arctic and Antarctic ice products are available from the GOFS 3.1web page. The ACNFS webpage will remain in service for historical purposes but will not be updated with real-time ice forecast products.
Arctic Cap Nowcast/Forecast System (ACNFS) |
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Experiment Number |
Date of Update |
Update |
| Expt_03.5 | 1 January 2012 | NOGAPS atmospheric forcing |
| Expt_15.3 Expt_03.8 |
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 |
| Expt_04.6 | 19 June 2016 | NAVGEM 1.3 atmospheric forcing Initialized from expt_04.2 on June 16 2016 to include more ice concentration observations in ACNFS |
System information
Arctic Beaufort
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