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Evaluating Meteorological Climate Model Inputs to Improve Coastal Hydrodynamic Studies : Volume 6, Issue 1 (22/08/2011)

By Bellafiore, D.

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Book Id: WPLBN0003989544
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Evaluating Meteorological Climate Model Inputs to Improve Coastal Hydrodynamic Studies : Volume 6, Issue 1 (22/08/2011)  
Author: Bellafiore, D.
Volume: Vol. 6, Issue 1
Language: English
Subject: Science, Advances, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Carniel, S., Gualdi, S., Umgiesser, G., Bucchignani, E., Djurdjeviæ, V., & Bellafiore, D. (2011). Evaluating Meteorological Climate Model Inputs to Improve Coastal Hydrodynamic Studies : Volume 6, Issue 1 (22/08/2011). Retrieved from http://www.ebooklibrary.org/


Description
Description: ISMAR-CNR, Institute of Marine Science – National Research Council, Venice, Italy. This work compares meteorological results from different regional climate model (RCM) implementations in the Mediterranean area, with a focus on the northern Adriatic Sea. The need to use these datasets as atmospheric forcings (wind and atmospheric pressure fields) for coastal hydrodynamic models to assess future changes in the coastal hydrodynamics, is the basis of the presented analysis. It would allow the assessment of uncertainties due to atmospheric forcings in providing coastal current, surge and wave climate changes from future implementations of hydrodynamic models.

Two regional climate models, with different spatial resolutions, downscaled from two different global climate models (whose atmospheric components are, respectively, ECHAM4 and ECHAM5), were considered. In particular, the RCM delivered wind and atmospheric pressure fields were compared with measurements at four stations along the Italian Adriatic coast. The analyses were conducted using a past control period, 1960–1990, and the A1B IPCC future scenario (2070–2100). The chosen scenario corresponds to a world of very rapid economic and demographic growth that peaks in mid-century, with a rapid introduction of new efficient technologies, which balance fossil and non-fossil resources (IPCC, 2007). Consideration is given to the accuracy of each model at reproducing the basic statistics and the trends. The role of models' spatial resolution in reproducing global and local scale meteorological processes is also discussed. The Adriatic Sea climate is affected by the orography that produces a strengthening of north-eastern katabatic winds like bora. Therefore, spatial model resolution, both for orography and for a better resolution of coastline (Cavaleri et al., 2010), is one of the important factors in providing more realistic wind forcings for future hydrodynamic models implementations. However, also the characteristics in RCM setup and parameterization can explain differences between the datasets. The analysis from an ensemble of model implementation would provide more robust indications on climatic wind and atmospheric pressure variations. The scenario-control comparison shows a general increase in the mean atmospheric pressure values while a decrease in mean wind speed and in extreme wind events is seen, particularly for the datasets with higher spatial resolution.


Summary
Evaluating meteorological climate model inputs to improve coastal hydrodynamic studies

Excerpt
Cavaleri, L., Bertotti, L., Buizza, R., Buzzi, A., Masato, V., Umgiesser, G., and Zampieri, M.: Predictability of extreme meteo-oceanographic events in the Adriatic Sea, Q. J. Roy. Meteor. Soc., 136, 400–413, 2010.; Djurdjevic, V. and Rajkovic, B.: Verification of a coupled atmosphere-ocean model using satellite observations over the Adriatic Sea, Ann. Geophys., 26, 1935–1954, doi:10.5194/angeo-26-1935-2008, 2008.; Djurdjevic, V. and Rajkovic, B.: Development of the EBU-POM coupled regional climate model and results from climate change experiments, in: Advances in Environmental Modeling and Measurements, edited by: Mihajlovic, T. D. and Lalic, B., Nova Publishers, 2010.; Giorgi, F., Bi, X., and Pal, J. S.: Mean. interannual variability and trends in a regional climate change experiment over Europe, Clim. Dynam., 22, 733–756, doi:10.1007/s00382-004-0409-x, 2004.; Gualdi, S., Rajkovic, B., Djudjevic, V., Castellari, S., Scoccimarro, E., Navarra, A., and Dadic, M.: Simulation of climate change in the mediterranean area, Web, Final Scientific, http://www.earth-prints.org/bitstream/2122/4675/1/SINTA_FInal20Report202008.pdf, 2008.; IPCC: Climate Change 2007, Synthesis Report, Technical report, IPCC-Intergovernamental Panel for Climate Change, 2007.; Janjic, Z.: Non-linear advection schemes and energy cascade on semi staggered grids, Mon. Weather Rev., 112, 1234–1245, 1984.; Madec, G., Delecluse, P., Imbard, M., and Levy, C.: OPA 8.1 Ocean General Circulation Model reference manual, Internal Rep. 11, Inst. Pierre-Simon Laplace, Paris, France, 1999.; Mesinger, F., Janjic, Z., Nicovic, S., Gavrilov, D., and Daven, D.: The step mountain coordinate: model description and performance for cases of alpine lee cyclogenesis and for a case of an Appalachian redevelopment, Mon. Weather Rev., 116, 1493–1518, 1988.; Oddo, P., Adani, M., Pinardi, N., Fratianni, C., Tonani, M., and Pettenuzzo, D.: A nested Atlantic-Mediterranean Sea general circulation model for operational forecasting, Ocean Sci., 5, 461–473, doi:10.5194/os-5-461-2009, 2009.; Rockel, B., Will, A., and Hense, A.: The regional Climate Model COSMO-CLM (CCLM), Meteorol. Z., 17(4), 347–348, 2008.; Roeckner, E., Arpe, K., Bengtsson, L., Christoph, M., Claussen, M., Dümenil, L., Esch, M., Giorgetta, M., Schlese, U., and Schulzweida U.: The atmospheric general circulation model ECHAM-4: Model description and simulation of present-day climate, Max Planck Institut fur Meteorologie, report 218, 90 pp., 1996.; Roeckner, E., Bäuml, G., Bonaventura, L., Brokopf, R., Esch, M., Giorgetta, M., Hagemann, S., Kirchner, I., Kornblueh, L., Manzini, E., Rhodin, A., Schlese, U., Schulzweida, U., and Tompkins, A.: The atmospheric general circulation model ECHAM 5, Max-Planck-Institut fuer Meteorologie, report 349, Hamburg, 140 pp., ISSN 0937-1060, 2003.; Woth, K., Weisse, R., and Von Storch, H.: Climate change and North Sea storm surge extremes: an ensemble study of storm surge extremes expected in a changed climate projected by four different regional climate models, Ocean Dynam., 56, 3–15, doi:10.1007/s10236-005-0024-3, 2006.; Zampieri, M., Giorgi, F., Lionello, P., and Nikulin, G.: Regional climate change in the Northern Adriatic, J. Phys. Chem. Earth, in press, doi:10.1016/j.pce.2010.02.003, 2010.

 

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