scholarly journals Northern Adriatic meteorological tsunamis: Assessment of their potential through ocean modeling experiments

2015 ◽  
Vol 120 (4) ◽  
pp. 2993-3010 ◽  
Author(s):  
Jadranka Šepić ◽  
Ivica Vilibić ◽  
Isaac Fine
Keyword(s):  
Ocean Modeling ◽  
Northern Adriatic ◽  
Meteorological Tsunamis

scholarly journals Modeling ocean response to an extreme Bora event in Northern Adriatic using one-way and two-way atmosphere-ocean coupling

2015 ◽  
Vol 12 (4) ◽  
pp. 1389-1431
Author(s):  
M. Ličer ◽  
P. Smerkol ◽  
A. Fettich ◽  
M. Ravdas ◽  
A. Papapostolou ◽  
...  
Keyword(s):  
Seawater Temperature ◽  
Coupled System ◽  
Atmospheric Model ◽  
Ocean Model ◽  
Ocean Modeling ◽  
Northern Adriatic ◽  
Ocean Response ◽  
Ocean Coupling ◽  
The One

Abstract. We study the performances of (a) fully two-way coupled atmosphere–ocean modeling system and (b) one-way coupled ocean model (forced by the atmospheric model hourly output), as compared to the available in situ (mooring and CTD) measurements during and after an strong Bora wind event in February 2012, which led to extreme air–sea interactions and record breaking seawater cooling and dense water formation in Northern Adriatic. The simulations span the period between January and March 2012. The models used were ALADIN (4.4 km resolution) on the atmospheric side and Adriatic setup of POM (1°/30 × 1°/30 angular resolution) on the ocean side. The atmosphere–ocean coupling was implemented using the OASIS3-MCT model coupling toolkit. We show, using in situ seawater temperature measurements, that the two-way atmosphere–ocean coupling improves the ocean response to Bora because it captures transient Bora-induced cooling better than the one-way coupled version of the ocean model. We show that this difference stems mainly from an underestimation of air–sea temperature difference in one-way coupled system during the Bora episode, leading to an underestimation of sensible heat losses from the ocean in the one-way coupled system. We show these losses exhibit significant impact on baroclinic circulation on synoptic timescales. We use CTD observations in the Gulf of Trieste to show that when compared to the one-way setup, the two-way coupled system produces a similar estimation of salinities and density anomalies before the Bora episode, but a significantly better estimation of these quantities afterwards.

scholarly journals Northern Adriatic meteorological tsunamis: Observations, link to the atmosphere, and predictability

2012 ◽  
Vol 117 (C2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jadranka Šepić ◽  
Ivica Vilibić ◽  
Nataša Strelec Mahović
Keyword(s):  
Northern Adriatic ◽  
Meteorological Tsunamis

scholarly journals Modeling the ocean and atmosphere during an extreme bora event in northern Adriatic using one-way and two-way atmosphere–ocean coupling

Ocean Science ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 71-86 ◽  
Author(s):  
M. Ličer ◽  
P. Smerkol ◽  
A. Fettich ◽  
M. Ravdas ◽  
A. Papapostolou ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Coupled System ◽  
Ocean Model ◽  
Heat Fluxes ◽  
Ocean Modeling ◽  
Spatial Average ◽  
Northern Adriatic ◽  
Ocean Coupling ◽  
Before And After ◽  
Latent Heat Loss

Abstract. We have studied the performances of (a) a two-way coupled atmosphere–ocean modeling system and (b) one-way coupled ocean model (forced by the atmosphere model), as compared to the available in situ measurements during and after a strong Adriatic bora wind event in February 2012, which led to extreme air–sea interactions. The simulations span the period between January and March 2012. The models used were ALADIN (Aire Limitée Adaptation dynamique Développement InterNational) (4.4 km resolution) on the atmosphere side and an Adriatic setup of Princeton ocean model (POM) (1°∕30 × 1°∕30 angular resolution) on the ocean side. The atmosphere–ocean coupling was implemented using the OASIS3-MCT model coupling toolkit. Two-way coupling ocean feedback to the atmosphere is limited to sea surface temperature. We have compared modeled atmosphere–ocean fluxes and sea temperatures from both setups to platform and CTD (conductivity, temperature, and depth) measurements from three locations in the northern Adriatic. We present objective verification of 2 m atmosphere temperature forecasts using mean bias and standard deviation of errors scores from 23 meteorological stations in the eastern part of Italy. We show that turbulent fluxes from both setups differ up to 20 % during the bora but not significantly before and after the event. When compared to observations, two-way coupling ocean temperatures exhibit a 4 times lower root mean square error (RMSE) than those from one-way coupled system. Two-way coupling improves sensible heat fluxes at all stations but does not improve latent heat loss. The spatial average of the two-way coupled atmosphere component is up to 0.3 °C colder than the one-way coupled setup, which is an improvement for prognostic lead times up to 20 h. Daily spatial average of the standard deviation of air temperature errors shows 0.15 °C improvement in the case of coupled system compared to the uncoupled. Coupled and uncoupled circulations in the northern Adriatic are predominantly wind-driven and show no significant mesoscale differences.

Parallel Ocean Modeling Using Glenda.

1995 ◽  
Author(s):  
Jerry L. Bickham ◽  
II
Keyword(s):  
Ocean Modeling
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