Data Assimilation System of KIOST (Korea Institute of Ocean Science & Technology)

KIOST has developed an ocean data assimilation system to be cooperated with a coupled climate model. The main goal of the Data Assimilation System of KIOST (DASK) is to produce the best estimation of the ocean state.

The DASK has been developed based on the Ensemble Optimal Interpolation applied to the GFDLs fully coupled climate model (CM2.1, Delworth et al. [2006]). The ocean component model is the forth version of the Modular Ocean Model (MOM4, Griffies et al. [2004]). The ocean model has horizontal resolution of 1 in latitude and longitude, with meridional resolution becoming finer equatorward from 1 at 30 to 1/3 at equator, and 50 vertical levels. The assessment by comparison with other global reanalyses suggests that the DASK well represents ocean climate variability, for example, El Nino Southern Oscillation, North Pacific Intermediate Water, Pacific Decadal Oscillation, Indian Ocean Dipole in spite of low consumption of computing resource. For more details, please see their website (http://las.kiost.ac/las/UI.vm). DASK 1.4 : Monthly mean in 1947-2012.

Publication
Kim, Y.H., C. Hwang, W.-M. Kim, Development and validation of KIOST Climate Reanalysis, Proceedings of 2014 Ocean Science Meeting.

Variables
u and v current [m/s]
wind stress [N/m^2]
mixed layer depth determined by density criteria [m]
net (precip-evap)(kg/(m2*sec) into ocean, divided by 1035kg/m3 [m/sec]
mass flux of river (runoff + calving) entering ocean [(kg/m^3)*(m/sec)]
salinity [psu]
dia-surface velocity T-points [m/sec]
Potential temperature [ °C]
 heat flux (relative to 0C) from pme transfer of water across ocean surface [Watts/m^2]
Zonal Global by 1 deg
Meridional Global by 1 - 1/3 deg
Vertical 5, 15, 25, 35, 45, 55, 65, 75, 85, 95, 105, 115, 125, 135, 145, 155, 165, 175, 185, 195, 205, 215, 225, 236, 251, 271, 298, 336, 385, 447, 524, 618, 729, 858, 1007, 1176, 1364, 1573, 1801, 2049, 2315, 2598, 2898, 3213, 3541, 3881, 4231, 4588, 4950, 5316  
Temporal Jan 1947 to Dec 2012 by 1 month(s)
Static? yes
Volume 58.4GB
Server public:
Source  
Acquired Feb 21, 2014
APDRC contact
Supplements Development and validation of KIOST Climate Reanalysis