What is ODTM?
ODTM stands for Ocean Dynamic Thermodynamic Model.
History of ODTM
ODTM is developed just as a simple 1.5 layer reduced gravity model during my Ph.D. time as a learning tool for tropical ocean dynamics in response to wind forcing. Later based on the generalized equation of pressure term in the reduced gravity models (Jensen, 1991, JGR-Oceans), the model is modified for the N.5 layer ocean where N is any number of layers. This version of the model is later used in the dynamics of tropical ocean studies. Then this is expanded with adding thermodynamic terms with an embedded mixed layer module.
What does ODTM do
ODTM is an isopycnal reduced gravity dynamics-thermodynamic model for the tropical oceans. The mixed layer module of this model is different from the conventional reduced gravity models with temperature and salinity. Unlike a bulk mixed layer embedded in the first layer of the reduced gravity model and a fossil layer beneath, the ODTM has a continuously stratified (as represented by the vertical resolution) mixed layer model up to 255 meters deep. This mixed layer columns as same horizontal resolution as the reduced gravity model. At each time step, the dynamics of the compressed gravity layer is used to advect (communicate) across each vertical column of the mixed layer model.
Further, the updated momentum and tracers of the mixed layer modules are layer averaged and added to the reduced gravity bulk temperature and salinity layers. This offers a representation of excellent processes of vertical mixing yet retaining finite thickness in the reduced gravity framework making ODTM a unique model with ease of handling tropical ocean dynamics.
How is ODTM coded?
ODTM is coded in F90 with FMS parallelization.
ODTM stands for Ocean Dynamic Thermodynamic Model.
History of ODTM
ODTM is developed just as a simple 1.5 layer reduced gravity model during my Ph.D. time as a learning tool for tropical ocean dynamics in response to wind forcing. Later based on the generalized equation of pressure term in the reduced gravity models (Jensen, 1991, JGR-Oceans), the model is modified for the N.5 layer ocean where N is any number of layers. This version of the model is later used in the dynamics of tropical ocean studies. Then this is expanded with adding thermodynamic terms with an embedded mixed layer module.
What does ODTM do
ODTM is an isopycnal reduced gravity dynamics-thermodynamic model for the tropical oceans. The mixed layer module of this model is different from the conventional reduced gravity models with temperature and salinity. Unlike a bulk mixed layer embedded in the first layer of the reduced gravity model and a fossil layer beneath, the ODTM has a continuously stratified (as represented by the vertical resolution) mixed layer model up to 255 meters deep. This mixed layer columns as same horizontal resolution as the reduced gravity model. At each time step, the dynamics of the compressed gravity layer is used to advect (communicate) across each vertical column of the mixed layer model.
Further, the updated momentum and tracers of the mixed layer modules are layer averaged and added to the reduced gravity bulk temperature and salinity layers. This offers a representation of excellent processes of vertical mixing yet retaining finite thickness in the reduced gravity framework making ODTM a unique model with ease of handling tropical ocean dynamics.
How is ODTM coded?
ODTM is coded in F90 with FMS parallelization.
Group Head
Members
Dr. Homi Bhabha Road, Pashan, Pune, 411 008, India (020) 2590 4514