SODA v2.2.4

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 0.25x0.4x40-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 0.5x0.5x40-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).

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

Ocean temperature (including SST) (C), salinity (psu), horizontal and vertical ocean velocity (m/s), sea level (m), wind stress (N/m^2)
ZonalGlobal by 0.5 deg
MeridionalGlobal 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)
Acquired August 2010 (Updated Jan 2014)
APDRC contact