Accession Number:

ADA551010

Title:

Real-time Data Assimilation of Satellite Derived Ice Concentration into the Arctic Cap Nowcast/Forecast System (ACNFS)

Descriptive Note:

Conference paper

Corporate Author:

NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS

Personal Author(s):

• Posey, P. G.
• Hebert, D. A.
• Metzger, E. J.
• Wallcraft, A. J.
• Cummings, J. A.
• Preller, R. H.
• Smedstad, O. M.
• Phelps, M. W.

Report Date:

2011-09-01

Pagination or Media Count:

5.0

Abstract:

Over the last decade, ice conditions in the Arctic have changed dramatically resulting in the Arctic having a minimum in ice extent during the summers of 2007, 2008 and 2010. With this rapidly changing polar environment, the need for accurate ice forecasts is essential. The Naval Research Laboratory NRL has developed the Arctic Cap NowcastForecast System ACNFS, a two-way coupled iceocean system, to forecast ice conditions in the polar regions. This system applies the Los Alamos Community Ice CodE CICE coupled via the Earth System Modeling Framework ESMF to the HYbrid Coordinate Ocean Model HYCOM. The Navy Coupled Ocean Data Assimilation NCODA, a 3-Dimensional VARiational analysis 3DVAR scheme, is used to assimilate ice and ocean observations into the forecast system. Ice concentration data from two sources the Defense Meteorological Satellite Program DMSP Special Sensor MicrowaveImager SSMI and the Advanced Microwave Scanning Radiometer for Earth Observation System AMSR-E are used as observations for the ice analysis. Results from the coupled system using both concentration input datasets will be discussed.

Descriptors:

• *ARCTIC REGIONS
• *FORECASTING
• *METEOROLOGICAL SATELLITES
• ACCURACY
• ASSIMILATION
• CODING
• COMMUNITIES
• CONCENTRATION(COMPOSITION)
• COUPLING(INTERACTION)
• DEPARTMENT OF DEFENSE
• DETECTORS
• EARTH(PLANET)
• ENVIRONMENTS
• ICE
• LINE OF SIGHT
• MICROWAVE EQUIPMENT
• NAVAL RESEARCH LABORATORIES
• OBSERVATION
• OCEANOGRAPHIC DATA
• POLAR REGIONS
• RADIOMETERS
• REAL TIME
• SCANNING

Subject Categories:

• Meteorology
• Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE