University of Rhode Island - Graduate School of Oceanography - Michael Bueti

MOM4 Seasonal Hurricane Experiments

Using a nominal 1/4° horizontal resolution configuration of GFDL's MOM4 ocean circulation model, I will study the impact of seasonal tropical cyclone activity on a number of ocean parameters.

June 2004 Spinup SST

At time 0 (December 1, 2003), the 1/4° MOM4 was initialized with temperature and salinity fields from GFDL's Ocean Data Assimilation experiment, and zero currents. The model was then forced with the NCAR corrected interannual forcing until June 1, 2004, with a resulting SST field comparable, if somewhat cooler, than the monthly mean from ODA for June 2004.
June 2004 Spinup 30°N Atlantic Cross Section

At time 0 (December 1, 2003), the 1/4° MOM4 was initialized with temperature and salinity fields from GFDL's Ocean Data Assimilation experiment, and zero currents. The model was then forced with the NCAR corrected interannual forcing until June 1, 2004. The vertical structure in the Atlantic looks comparable to that of the monthly mean from ODA, with an expected increase in small scale structure. As with the SST field, the near surface is slightly cooler.
June 2004 Spinup 21°N Atlantic Cross Section

At time 0 (December 1, 2003), the 1/4° MOM4 was initialized with temperature and salinity fields from GFDL's Ocean Data Assimilation experiment, and zero currents. The model was then forced with the NCAR corrected interannual forcing until June 1, 2004. The vertical structure in the Atlantic looks comparable to that of the monthly mean from ODA, with an expected increase in small scale structure. As with the SST field, the near surface is slightly cooler.
June 2004 Spinup 30°N Pacific Cross Section

At time 0 (December 1, 2003), the 1/4° MOM4 was initialized with temperature and salinity fields from GFDL's Ocean Data Assimilation experiment, and zero currents. The model was then forced with the NCAR corrected interannual forcing until June 1, 2004. The vertical structure in the Pacific looks comparable to that of the monthly mean from ODA, with an expected increase in small scale structure. As with the SST field, the near surface is slightly cooler.
2004 Season Wind

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Wind data was taken from the model's flux output, for the experimental run and one neglecting the hurricane embedding. Simulation was carried out for 12 months, ending May 31, 2005, and includes all tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 Integrated Ocean Heat Uptake

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomalies were horizontally and vertically integrated globally, and multiplied by the heat capacity and density of seawater, producing a heat uptake density. Simulation was carried out for 19 months, ending December 31, 2005, and includes all northern hemisphere tropical cyclones present in the extended best track record.
2004-2005 Northern Global Heat Uptake Profile

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomalies were horizontally integrated globally, and multiplied by the heat capacity and density of seawater, producing a heat uptake density. Simulation was carried out for 19 months, ending December 31, 2005, and includes all northern hemisphere tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 West Pacific Heat Uptake Profile

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomalies were horizontally integrated for the West Pacific, and multiplied by the heat capacity and density of seawater, producing a heat uptake density. Simulation was carried out for 19 months, ending December 31, 2005, and includes all northern hemisphere tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 East Pacifioc Heat Uptake Profile

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomalies were horizontally integrated for the East Pacific, and multiplied by the heat capacity and density of seawater, producing a heat uptake density. Simulation was carried out for 19 months, ending December 31, 2005, and includes all northern hemisphere tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 North Atlantic Heat Uptake Profile

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomalies were horizontally integrated for the North Atlantic, and multiplied by the heat capacity and density of seawater, producing a heat uptake density. Simulation was carried out for 19 months, ending December 31, 2005, and includes all northern hemisphere tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 Season SST Anomaly

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomaly taken by differencing with a parallel run that neglected the hurricane embedding. Simulation was carried out for 12 months, ending May 31, 2005, and includes all tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004-2005 Season 100m T Anomaly

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Temperature anomaly taken by differencing with a parallel run that neglected the hurricane embedding. Simulation was carried out for 12 months, ending May 31, 2005, and includes all tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)
2004 Season SSH Anomaly

MOM4 initialized from Ocean Data Assimilation based spinup on June 1, 2004. Forced with NCAR Corrected Interannual forcing, with embedded synthetic hurricanes generated by the URI wind subroutine. Sea surface height anomaly taken by differencing with a parallel run that neglected the hurricane embedding. Simulation was carried out for 12 months, ending May 31, 2005, and includes all tropical cyclones present in the extended best track record. (Click image for video, suggest right clicking to download)