Tropical Pacific Ocean State Estimation

A regional setup of the MIT general circulation model (MITgcm) is constrained to fit data from the Tropical Pacific Observing System (TPOS; http://tpos2020.org). Data assimilation is accomplished iteratively through the adjoint method, resulting in a physically-realistic estimate of the ocean state. For more information see Verdy, Cornuelle, Mazloff, and Rudnick, 2017: Estimation of the Tropical Pacific Ocean State 2010-2013. J. Atmos. Oceanic Technol., 34, 1501-1517

Results

We have produced a state estimate for the period 2010-2018. The output is publicly available (please cite appropriately). Some fields can be obtained by clicking on the links below; for additional diagnostics, please do not hesitate to contact us directly.

SST: animation 2010-2017, 28.5 degree contour animation 2016-2017, 28.5 degree contour animation 2010-2017 [note: animations show satellite observations on top and state estimate at the bottom]

SSH: animation 2015-2017, animation 2010-2017 [note: animations show AVISO product on top and state estimate at the bottom]

Validation: model-observations comparison
Download files in netcdf format:
SSH, daily: 2010 to 2019
SST, daily: 2010 to 2019
Potential temperature, monthly: 2010 to 2019
Potential temperature, 5-day averages: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Potential temperature, daily: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Salinity, monthly: 2010 to 2019
Salinity, 5-day averages: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Salinity, daily: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Zonal velocity, monthly: 2010 to 2019
Zonal velocity, 5-day averages: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Zonal velocity, daily: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Meridional velocity, monthly: 2010 to 2019
Meridional velocity, 5-day averages: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Meridional velocity,daily: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Vertical velocity (missing 2010-2014), monthly: 2015 to 2019
Vertical velocity (missing 2010-2014), 5-day averages: 2015, 2016, 2017, 2018, 2019
Vertical velocity (missing 2010-2014), daily: 2015, 2016, 2017, 2018, 2019

Citation

When using this state estimate please cite: Verdy, Cornuelle, Mazloff, and Rudnick, 2017: Estimation of the Tropical Pacific Ocean State 2010-2013. J. Atmos. Oceanic Technol., 34, 1501-1517

Contact

Ariane Verdy, Bruce Cornuelle