Ocean data assimilation model
There are several versions of SODA (Carton, Giese and Grodsky, 2005), depending on
the experiment setup. Version 2.2.4 represents their first assimilation run of over
100 years and uses the 20Crv2 winds. As such it is considered a "beta release" and is currently under evaluation
in preparation of another long run. We are releasing it as we feel it is important
for other researchers to have a chance to examine it. Please feel free to contact
the SODA group at Texas A&M University with any comments or concerns.
The ocean model is based on Parallel Ocean Program physics with an average
0.25°x0.4°x40-level resolution. Observations include virtually all available
hydrographic profile data, as well as ocean station data, moored temperature
and salinity time series, surface temperature and salinity observations of
various types, and nighttime infrared satellite SST data. The output is in
monthly-averaged form, mapped onto a uniform 0.5°x0.5°x40-level grid. The
reanalysis provides three types of variables, those well constrained by observations,
those partly constrained by dynamical relatioships to variables frequently
observed, and those poorly constrained such as horizontal velocity divergence.
It is worthy noting that SODA aims at improving upper ocean reanalysis, likely
because data below 1000m is limited. For more information on the SODA product,
see Carton et al. (2005) and Carton and Giese (2008).
Reference:
Giese, B. S. and S. Ray (2011), El Niño variability in simple ocean data assimilation (SODA), 1871–2008, J. Geophys. Res., 116, C02024, doi:10.1029/2010JC006695. [Version 2.2.4]
Carton, J. A. and B. S. Giese, 2008: A Reanalysis of Ocean Climate Using Simple Ocean
Data Assimilation (SODA), Mon. Weather Rev., 136, 2999-3017
Carton, JA, BS Giese, and S.A. Grodsky, 2005: Sea level rise and the warming of the oceans in the SODA ocean
reanalysis, J. Geophys. Res., 110, art# 10.1029/2004JC002817
Variables | Ocean temperature (including SST) (°C), salinity (psu), horizontal and vertical ocean velocity (m/s), sea level (m), wind stress (N/m^2) |
Zonal | Global by 0.5 deg |
Meridional | Global by 0.5 deg |
Vertical | 5375, 5125, 4875, 4625, 4375, 4125, 3875, 3625, 3375, 3125, 2875, 2375, 2125.01, 1875.11, 1625.7, 1378.57, 1139.15, 918.37, 729.35, 579.31, 465.91, 381.39, 317.65, 268.46, 229.48, 197.79, 171.4, 148.96, 129.49, 112.32, 96.92, 82.92, 70.02, 57.98, 46.61, 35.76, 25.28, 15.07, 5.01 m |
Temporal | Jan 1871 to Dec 2010 by 1 month(s) |
Static? | yes |
Volume | |
Server | public: ![]() ![]() ![]() ![]() ![]() |
Source | http://sodaserver.tamu.edu/ |
Acquired | August 2010 (Updated Jan 2014) |
APDRC contact | |
Supplements | N/A |