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EFFECTS OF TROPICAL CYCLONES ON OCEAN HEAT TRANSPORT AS SIMULATED BY A HIGH RESOLUTION COUPLED GENERAL CIRCULATION MODEL
Author(s)
Type
Poster session
Language
English
Obiettivo Specifico
3.7. Dinamica del clima e dell'oceano
Status
Unpublished
Conference Name
Issued date
December 2010
Conference Location
S.Francisco. USA
Abstract
In this study the interplay between Tropical Cyclones (TCs) and the Northern hemispheric Ocean Heat Transport (OHT) is investigated. In particular, results from a numerical simulation of the 20th and 21st Century climate, following the Intergovernmental Panel for Climate Change (IPCC) 20C3M and A1B scenario protocols respectively have been analyzed. The numerical simulations have been performed using a state-of-the-art global atmosphere-ocean-sea-ice coupled general circulation model - CGCM (CMCC-MED, Gualdi et al. 2010, Scoccimarro et al. 2010) with relatively high-resolution (T159) in the atmosphere. The model is an evolution of the INGV-SXG (Gualdi et al. 2008, Bellucci et al. 2008) and the ECHAM-OPA-LIM (Fogli et al. 2009, Vichi et al. 2010) The simulated TCs exhibit realistic structure, geographical distribution (Fig.2) and interannual variability, indicating that the model is able to capture the basic mechanisms linking the TC activity with the large scale circulation. The cooling of the surface ocean observed in correspondence of the TCs is well simulated by the model (Fig.3). TC activity is shown to significantly affect the poleward OHT out of the tropics, and the heat transport into the deep tropics (Fig.4). This effect, investigated by looking at the 100 most intense Northern Hemisphere TCs, is strongly correlated with the TC-induced momentum flux at the ocean surface (Fig.7). TCs frequency and
intensity appear to be substantially stationary through the whole 1950-2069 simulated period as well as the effect of the TCs on the meridional OHT.
intensity appear to be substantially stationary through the whole 1950-2069 simulated period as well as the effect of the TCs on the meridional OHT.
References
Bellucci A., S. Gualdi, E. Scoccimarro and A. Navarra, 2008: NAO – ocean circulation interactions in a coupled general circulation model. Clim. Dyn., 31, 7-8, pp. 759-777. DOI 10.1007/s00382-008-0408-4.
• Emanuel K.A., 2001: Contribution of tropical cyclones to meridional heat transport by the oceans, Journal of Geophysical Research, 106 (D14), 14,771–14,781.
• Fogli P.G., E. Manzini, M. Vichi, A. Alessandri, L. Patara, S. Gualdi, E. Scoccimarro, S. Masina and A. Navarra, 2009: INGV-CMCC Carbon (ICC): A Carbon Cycle Earth System Model. CMCC Technical Reports 61.
• Gualdi S., E. Scoccimarro, A. Navarra, 2008: Changes in Tropical Cyclone Activity due to Global Warming: Results from a High- Resolution Coupled General Circulation Model. J. of Clim., 21, 5204–5228.
• Gualdi S., E. Scoccimarro, A. Bellucci, P. Oddo, A. Sanna, P.G. Fogli, M. Vichi, E. Manzini, A. Navarra, 2010: Regional climate simulations with a global high resolution coupled model: the Euro-Mediterranean case. Submitted.
• Jansen M and R. Ferrari , 2009: Impact of the latitudinal distribution of tropical cyclones on ocean heat transport. Geophys. Res. Lett, 36, L06604, doi:10.1029/2008GL036796.
• Scoccimarro E., S. Gualdi, A. Bellucci, A. Sanna , P.G. Fogli,E. Manzini, M. Vichi, P. Oddo, A. Navarra (2010), Effects of Tropical Cyclones on Ocean Heat Transport in a High Resolution Coupled General Circulation Model. Submitted.
• Vichi M., E. Manzini, P.G. Fogli, A. Alessandri, L. Patara, S. Masina, S. Gualdi, E. Scoccimarro and A. Navarra, 2010: Global and regional ocean carbon uptake and climate change: Sensitivity to an aggressive mitigation scenario. Clim. Dyn. under revision.
• Emanuel K.A., 2001: Contribution of tropical cyclones to meridional heat transport by the oceans, Journal of Geophysical Research, 106 (D14), 14,771–14,781.
• Fogli P.G., E. Manzini, M. Vichi, A. Alessandri, L. Patara, S. Gualdi, E. Scoccimarro, S. Masina and A. Navarra, 2009: INGV-CMCC Carbon (ICC): A Carbon Cycle Earth System Model. CMCC Technical Reports 61.
• Gualdi S., E. Scoccimarro, A. Navarra, 2008: Changes in Tropical Cyclone Activity due to Global Warming: Results from a High- Resolution Coupled General Circulation Model. J. of Clim., 21, 5204–5228.
• Gualdi S., E. Scoccimarro, A. Bellucci, P. Oddo, A. Sanna, P.G. Fogli, M. Vichi, E. Manzini, A. Navarra, 2010: Regional climate simulations with a global high resolution coupled model: the Euro-Mediterranean case. Submitted.
• Jansen M and R. Ferrari , 2009: Impact of the latitudinal distribution of tropical cyclones on ocean heat transport. Geophys. Res. Lett, 36, L06604, doi:10.1029/2008GL036796.
• Scoccimarro E., S. Gualdi, A. Bellucci, A. Sanna , P.G. Fogli,E. Manzini, M. Vichi, P. Oddo, A. Navarra (2010), Effects of Tropical Cyclones on Ocean Heat Transport in a High Resolution Coupled General Circulation Model. Submitted.
• Vichi M., E. Manzini, P.G. Fogli, A. Alessandri, L. Patara, S. Masina, S. Gualdi, E. Scoccimarro and A. Navarra, 2010: Global and regional ocean carbon uptake and climate change: Sensitivity to an aggressive mitigation scenario. Clim. Dyn. under revision.
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