HYCOM + NCODA Global 1/12 Analysis (Hawaiian Archipelago Sector)

APDRC serves model output for the Hawaiian Archipelago region from the HYCOM Consortium's real-time global ocean prediction system based on the Hybrid Coordinate ocean Model (HYCOM) and the Navy Coupled Ocean Data Assimilation (NCODA). The system runs daily and produces a five day hindcast (analysis) and a five day forecast. Model output is extracted for the Hawaiian Archipelago region in the original HYCOM format at the Center for Ocean Atmospheric Prediction Studies (COAPS) and downloaded to the APDRC daily. Original model layer variables are interpolated onto 33 z-levels before being put on the server at the APDRC.

The vertical velocity is computed based on the algorithm by George Halliwell (Diagnosis of Kinematic Vertical Velocity in HYCOM) as coded in archv2data3z of the HYCOM post-processing package.

Current Experiments List:

Experiment Date Project Ver. Assimilation Forcing Notes
expt_91.2 4/18/2016 -
Present
GOFS 3.0 2.2 NCODA (3DVAR) NAVGEM1.3  Analytic diurnal cycle applied to shortwave forcing
expt_91.1 4/5/2014 -
4/18/2016
GOFS 3.0 2.2 NCODA (3DVAR) NAVGEM1.2  Analytic diurnal cycle applied to shortwave forcing
expt_91.0 8/21/2013 -
4/4/2014
GOFS 3.0 2.2 NCODA (3DVAR) NAVGEM1.1  Analytic diurnal cycle applied to shortwave forcing
expt_90.9 1/3/2011 -
8/20/2013
GOFS 3.0 2.2 NCODA (MVOI) NOGAPS  Vertical levels have changed since 90.8; Analytic diurnal cycle applied to shortwave forcing
expt_90.8 5/7/2009 -
1/2/2011
GOFS 3.0 2.2 NCODA (MVOI) NOGAPS  
expt_90.6 9/19/2008 -
5/6/2009
GOFS 3.0 2.2 NCODA (MVOI) NOGAPS  
(Credit: Kellen Rosburg)

See http://www.hycom.org/dataserver/glb-analysis for further details of these experiments.

Variables
Sea Surface Height (m), Potential Temperature (C), Salinity (psu), Eastward & Northward velocity (m/s), Potential density (sigma2), Vertical velocity (m/s)
Zonal170E to 140.08W by 0.08 deg
Meridional10.028N to 39.915N by varies (~0.08)
Vertical0, 10, 20, 30, 50, 75, 100, 125, 150, 200, 250 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1750, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500 m
TemporalJun 23, 2007 to 3 days ahead of present by 1 day
Static?no
Volume85MB/day
Server public:
SourceHYCOM Consortium 
Acquired Jan 31, 2008 (Updated periodically)
APDRC contact
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