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Numerical Study of the Response of the Ocean to a Northerly Wind J...

By: K. Mosquera

Description: Instituto Geofísico del Perú, Lima, Perú. The response of the equatorial and South American coastal ocean circulation to the anomalous March 2002 wind jet extending from the Gulf of Panama to 6° S is studied in a linear ocean model. Two experiments were performed: one without continental boundaries and the other with an eastern boundary at 81° W, representing the American continent. The spatial and temporal structure of the imposed wind anomaly, represe...

Chelton, D. B., Freilich, M. H., and Esbensen, S. K.: Satellite Observations of the Wind Jets off the Pacific Coast of Central America. Part I: Case Studies and Statistical Characteristics, Mon. Wea. Rev., 128, 1993–2018, 2000.; Enfield, D.: The Intraseasonal Oscillation in Eastern Pacific Sea Level, How is it forced?, J. Phys. Ocean., 17, 1860–1876, 1987.; Johnson, M. A. and O'brien, J. J.: The role of coastal Kelvin waves on the northeast Pacific Ocean, J. Mar. Syst., ...

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The Variation of Floods in the Middle Reaches of the Yangtze River...

By: H.-t. Kung; T. Jiang; W. A. Gough; Y.-j. Wu

Description: School of Urban And Environmental Sciences, Central China Normal University, Wuhan 430079, China. Middle reaches of the Yangtze River are the worst flooded segments along the Yangtze River. It is important to understand and study the variations of frequency and magnitude of historical floods in this area and how were they related to or affected by EI Niño in a long historical period. We applied the statistics and time series to study and analyze historic...

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Integrated Sensor Analysis for Grace – Development and Validation ...

By: H. Oberndorfer; R. Schmidt; F. Flechtner; B. Frommknecht

Description: Institute for Astronomical and Physical Geodesy, Technical University of Munich, Arcisstrasse 21 D-80333, Munich, Germany. The focus of this article is on the accelerometer on board the two GRACE (Gravity Recovery and Climate Experiment) satellites. In a first analysis the accelerometer system is studied. The behavior of the test mass and its capacitive feedback system is simulated in the time and the frequency domain for one degree of freedom. Only lin...

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Preface Towards Practical Applications in Ensemble Hydro-meteorolo...

By: M. Bruen; A. Weerts; J. Thielen-del Pozo; M.-h. Ramos; Y. He; F. Pappenberger

Description: Department of Geography, King's College London, Strand, WC2R 2LS, London, UK. No abstract available.

Alfieri, L., Smith, P. J., Thielen-del Pozo, J., and Beven, K. J.: A staggered approach to flash flood forecasting - case study in the C$\acute\rm e$vennes region, Adv. Geosci., 29, 13–20, doi:10.5194/adgeo-29-13-2011, 2011a.; Alfieri, L., Velasco, D., and Thielen, J.: Flash flood detection through a multi-stage probabilistic warning system for heavy precipitation events, Adv. Geosci., 29, 69–75, doi:10.5194/adgeo-29-69-2011, 2011b.; Bao, H.-J., Zhao, L.-N., He, Y., Li, ...

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Determining Agricultural Land Use Scenarios in a Mesoscale Bavaria...

By: B. Lehner; R. Ludwig; B. B. Mehdi

Description: McGill University, Department of Geography, 805 Sherbrooke, Montreal, QC., H3A 2K6, Canada. Land use scenarios are of primordial importance when implementing a hydrological model for the purpose of determining the future quality of water in a watershed. This paper provides the background for researching potential agricultural land use changes that may take place in a mesoscale watershed, for water quality research, and describes why studying the farm sc...

EEA (European Environmental Agency): CORINE Land Cover 2000, www.eea.europa.eu/publications/COR0-landcover, 2010.; Alcamo, J., Döll, P., Henrichs, T., Kasper, F., Lehner, B., Rösch T., and Siebert, S.: Development and testing of the WaterGAP 2 global model of water use and availability, Hydrolog. Sci. J., 48, 317–338, 2003.; Arnold, J. G., Srinivasan, R., Muttiah, R. S., and Williams, J. R.: Large area hydrologic modeling and assessment part I: Model development, J. Am. ...

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Using the Firefly Optimization Method to Weight an Ensemble of Rai...

By: M. A. Gan; G. A. Grell; J. G. Z. De Mattos; E. F. P. Da Luz; A. F. Dos Santos; S. R. Freitas; H. F. De Campos Velho

Description: National Institute for Space Research, Center for Weather Forecasting and Climate Studies, Cachoeira Paulista, Brazil. In this paper we consider an optimization problem applying the metaheuristic Firefly algorithm (FY) to weight an ensemble of rainfall forecasts from daily precipitation simulations with the Brazilian developments on the Regional Atmospheric Modeling System (BRAMS) over South America during January 2006. The method is addressed as a param...

Anthes, R. A., Kuo, Y.-H., Hsie, E.-Y., Low-Nam, S., and Bettge, T. W.: Estimation of skill and uncertainty in regional numerical models, Q. J. Roy. Meteorol. Soc., 115, 763–806, doi:10.1002/qj.49711548803, 1989.; Apostolopoulos, T. and Vlachos, A.: Application of the Firefly Algorithm for Solving the Economic Emissions Load Dispatch Problem, Int. J. Comb., 2011, 1–23, doi:...

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Comparison of Different Efficiency Criteria for Hydrological Model...

By: D. P. Boyle; F. Bäse; P. Krause

Description: Department for Geoinformatics, Hydrology and Modelling, Friedrich-Schiller-University, Jena, Germany. The evaluation of hydrologic model behaviour and performance is commonly made and reported through comparisons of simulated and observed variables. Frequently, comparisons are made between simulated and measured streamflow at the catchment outlet. In distributed hydrological modelling approaches, additional comparisons of simulated and observed measureme...

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Integration of Water Balance Models in Rivertwin : Volume 9, Issue...

By: A. Bárdossy; R. Barthel; J. Jagelke; J. Götzinger

Description: Institute for Hydraulic Engineering, Universitaet Stuttgart, Germany. In the project RIVERTWIN climate, hydrologic, groundwater and water quality models are integrated in order to evaluate river basin management plans established for the implementation of the EU Water Framework Directive. In such integrated models, which try to simulate all relevant processes in a river basin realistically, modelling of the water balance plays a key role. Therefore the ...

Barthel, R., Rojanschi, V., Wolf, J., and Braun, J.: Large-scale water resources management within the framework of GLOWA-Danube, Part A: The groundwater model, Phys. Chem. Earth, 30, 6–7, 372–382, 2005.; Bergström, S.: The HBV model, in: Computer Models of Watershed Hydrology, edited by: Singh, V. P., Water Resources Pub., Littleton, CO, 443–476, 1995.; Beven, K. J. and Binley, A. M.: The future of distributed models: model calibration and uncertainty prediction, Hydrol...

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Preliminary Verification Results of the Dwd Limited Area Model Lme...

By: U. Voigt; K. Savvidou; P. Constantinides; S. Michaelides; A. Orphanou; J.-p. Schulz

Description: Meteorological Service, Nicosia, Cyprus. A preliminary verification and evaluation is made of the forecast fields of the non-hydrostatic limited area model LME of the German Weather Service (DWD), for a recent three month period. For this purpose, observations from two synoptic stations in Cyprus are utilized. In addition, days with depressions over the area were selected in order to evaluate the model's forecast skill in storm forecasting.

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Structure of Ocean Circulation Between the Galápagos Islands and E...

By: R. Martinez; A. Mascarenhas; C. Collins

Description: Naval Postgraduate School, Monterey, CA, USA. From 27 March to 5 April 2009, upper ocean velocities between the Galápagos Islands and Ecuador were measured using a vessel mounted ADCP. A region of possible strong cross-hemisphere exchange was observed immediately to the east of the Galápagos, where a shallow (200 m) 300 km wide northeastward surface flow transported 7–11 Sv. Underlying this strong northeastward surface current, a southward flowing under...

Allauca, S.: Presencia de la corriente costanera Ecuatoriana, Acta Oceanográfica del Pacifico, 6, 10–17, 1990.; Chaigneau, A., Gizolme, A., and Grados, C.: Mesoscale eddies off Peru in altimeter records: Identification algorithms and eddy spatio-temporal patterns, Prog. Oceanogr., 79, 106–119, 2008.; Chavez, F.: The Legitimate El Niño Current, Tropical Ocean-Atmosphere Newsletter, 34, p. 1, 1986.; Church, J. A. and White, N. J.: A 20th century acceleration in global sea-...

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Extreme Summer Temperatures in Western Europe : Volume 8, Issue 1 ...

By: M. Maugeri; T. Nanni; M. Brunetti; C. Simolo

Description: Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Bologna, Italy. We discuss the evolution of summer temperature extremes over Western Europe during 1961–2004 in the context of current climate warming. Using a parametric approach, we investigate the role of properties and changes in probability density functions of daily temperatures in modifying the frequency of severe, isolated events. In this perspective, the recent ...

Alexander, L. V., Zhang, X., Peterson, T. C., Caesar, J., Gleason, B., Klein Tank, A. M. G., Haylock, M., Collins, D., Trewin, B., Rahimzadeh, F., Tagipour, A., Rupa Kumar, K., Revadekar, J., Griffiths, G., Vincent, L., Stephenson, D. B., Burn, J., Aguilar, E., Brunet, M., Taylor, M., New, M., Zhai, P., Rusticucci, M., and Vazquez-Aguirre, J. L.: Global observed changes in daily climate extremes of temperature and precipitation, J. Geophys. Res., 111, D05109,

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Influence of Different Rates of Rainfall in the Basin of the Urugu...

By: C. B. Saldanha; B. Zaparoli; M. Bohrer

Description: Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil. In the state of Rio Grande do Sul, the rainfall pattern is fairly regular and precipitation is well distributed throughout the year. The aim of this study was to evaluate the spatial and temporal distribution of precipitation in the Uruguay River basin from the determination of homogeneous regions based on the rainfall pattern. Values of 47 meteorological stations of the ANA (National Wate...

Coelho, C. A. S. and Ambrizzi, T.: Determining patterns of precipitation over South America in association with the SST of the equatorial Pacific basin during periods of extreme ENSO through the use of multivariate statistical techniques, in: CBMET, 11, 2000, Rio de Janeiro, Brazilian Congress of Meteorology, Sao Paulo, Brazilian Congress of Meteorology, 2000 Proceedings, 2000.; Galvani, E. and Luchiari, A.: Criteria for classification of years with normal rainfall, dry ...

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A Terrestrial Reference Frame (Trf), Coordinates and Velocities fo...

By: M. L. Mateo; A. M. Robin; A. V. Calori; M. V. MacKern

Description: Consejo Nacional de Investigaciones Científicas y Técnicas, Mendoza, Argentina. Satellite positioning systems allow the fixing of the location of a point on the Earth's surface with very good precision and accuracy. To do this, however, it is necessary to determine the point coordinates taking account the reference system and the movements that affect them because of tectonic plate movements. These reference systems are materialized by a significant num...

Angermann, D., Drewes, H., Krügel, M., and Meisel, B.: Advances in terrestrial reference frame computations, Springer, IAG Symposia, Vol 130, 595–602, 2007.; % vor jede Referenz Altamimi, Z., Collilieux, X., Legrand, J., Garayt, B., and Boucher, C.: ITRF2005: A new release of the International Terrestrial Reference Frame based on time series of station positions and Earth Orientation Parameters, J. Geophys. Res., 112, B09401, doi:10.1029/2007JB004949, 2007.; Dach, R., Hu...

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Evaluating the Improvements of the Bolam Model of the Ispra Sistem...

By: S. Mariani; M. Bussettini; M. Casaioli; B. Lastoria

Description: ISPRA – Institute for Environmental Protection and Research, Rome, Italy. The Sistema Idro-Meteo-Mare is an integrated meteo-marine forecasting chain for the Mediterranean basin. The recent update of the meteorological segment, based on the hydrostatic BOlogna Limited Area Model (BOLAM), gives the opportunity for a comparative verification study on a Mediterranean cyclone. The 10–12 December 2008 flood event in Rome has been chosen as case study....

Accadia, C., Mariani, S., Casaioli, M., Lavagnini, A., and \mboxSperanza, A.: Verification of precipitation forecasts from two Limited Area Models over Italy and comparison with ECMWF forecasts using a resampling technique, Weather Forecast, 20, 276–300, 2005.; Calenda, G., Campolo, F., Cosentino, C., and Guercio, R.: Valutazione delle piene nei bacini delle sezioni idrografiche di Roma e Pescara, in La valutazione delle piene in Italia-Rapporto Nazionale di Sintesi, Boz...

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Desertification Risk Assessment in Southern Mediterranean Areas : ...

By: V. Telesca; D. Mirauda; G. Squicciarino; M. Greco

Description: CIMA, Department of Environmental Engineering and Physics, Basilicata University, Potenza, Italy. The paper deals some important aspects concerning the study of desertification phenomenon that has significantly interested all European countries of the Mediterranean basin in the last decades. The territorial sensibility, qualitatively and/or quantitatively, of the risk related to the desertification processes has been valued as grade of susceptibility to ...

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Trans-national Earthquake Early Warning (Eew) in North-eastern Ita...

By: A. Zollo; D. Pesaresi; L. Elia; M. Mucciarelli; W. Lenhardt; M. Živčić; A. Gosar; M. Picozzi

Description: RISSC, Università Federico II di Napoli – AMRA, Naples, Italy. The region of central and eastern Europe is an area characterised by a relatively high seismic risk. Since 2001, to monitor the seismicity of this area, the OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale) in Italy, the Agencija Republike Slovenije za Okolje (ARSO) in Slovenia, the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Austria, and the Università di Tr...

Akkar, S. and Bommer, J. J.: Empirical prediction equations for peak ground velocity derived from strong-motions records from Europe and the Middle East, Bull. Seismol. Soc. Am., 97, 511–530, 2007.; Alcik, H., Özel, O., Apaydin, N., and Erdik, M.: A study on warning algorithms for Istanbul earthquake early warning system, Geophys. Res. Lett., 36, L00B05, doi:10.1029/2008GL036659, 2009.; Allen, R. M., Gasparini, P., Kamig...

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Formation of a Large Scale Spot-like Structure of the Total Deposi...

By: Y. Y. Hrytsyuk; R. I. Chernysh; O. Y. Skrynyk

Description: Ukrainian Research Hydrometeorological Institute, Kyiv, Ukraine. The process of formation of a large scale spot-like structure of the cumulative deposition pattern due to a powerful elevated finite lifetime source is studied using numerical solutions of a model diffusion problem. A possible cause of spottiness at regional scale, namely the diurnal cycle of the vertical turbulent mixing intensity in the atmospheric boundary layer, is investigated. It is ...

Baklanov, A. and Sørensen, J. H.: Parameterisation of radionuclide deposition in atmospheric long-range transport modelling, Phys. Chem. Earth (B), 26(10), 787–799, 2001.; Brandt, J., Christensen, J. H., and Frohn, L. M.: Modelling transport and deposition of caesium and iodine from the Chernobyl accident using the DREAM model, Atmos. Chem. Phys., 2, 397–417, 2002.; Businger, J. A., Wyngaard, J. C., Izumi, Y., and Bradley, E. F.: Flux-profile relationship in the atmosphe...

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How Unusual Was Late 20Th Century El Niño-southern Oscillation (En...

By: J. L. Gergis; A. M. Fowler

Description: School of Biological, Earth and Environmental Sci., Univ. of New South Wales, Kensington, NSW 2052, Sydney, Australia. Multiple proxy records (tree-ring, coral, ice and documentary) were examined to isolate ENSO signals associated with both phases of the phenomenon for the period A.D. 1525-2002. To avoid making large-scale inferences from single proxy analysis, regional signals were aggregated into a network of high-resolution records, revealing large-sc...

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Development of a Longterm Dataset of Solid/Liquid Precipitation : ...

By: C. Matulla; M. Ganekind; B. Chimani; R. Böhm

Description: Central Institute for Meteorology and Geodynamics, Vienna, Austria. Solid precipitation (mainly snow, but snow and ice pellets or hail as well), is an important parameter for climate studies. But as this parameter usually is not available operationally before the second part of the 20th century and nowadays is not reported by automatic stations, information usable for long term climate studies is rare. Therefore a proxy for the fraction of solid precipi...

Auer, I., Böhm, R., Jurković, A., Orlik, A., Potzmann, R., Schöner, W., Ungersböck, M., Brunetti, M., Nanni, T., Maugeri, M., Briffa, K., Jones, P., Efthymiadis, D., Mestre, O., Moisselin, J.-M., Begert, M., Brazdil, R., Bochnicek, O., Cegnar, T., Gajić-Čapka, M., Zaninović, K., Majstorović, Ž., Szentimrey, T., and Mercalli, L.: A new instrumental precipitation dataset for the Greater Alpine Region for the period 1800–2002, Int. J. Climatol., 25, 139–166, 2005.; Auer, I....

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Determination and Ranking of Target Areas in Catchments for the Im...

By: R. Kunkel; W. Schäfer; F. Wendland; B. Tetzlaff

Description: Research Centre Jülich, Institute of Chemistry and Dynamics of the Geosphere (ICG), Institute IV: Agrosphere, 52425 Jülich, Germany. The implementation of the EU Water Framework Directive (EU-WFD) forms the background of the WAgriCo-project (Water Resources Management in Cooperation with Agriculture). WagriCo concentrates on the development of nitrogen management options adapted to hydrological and agro-economic site conditions and at demonstrating new p...

Böttcher, J., Strebel, O., and Duynisveld, W. H. M.: Kinetik und Modellierung gekoppelter Stoffumsetzungen im Grundwasser eines Lockergesteinsaquifers, Geologisches Jahrbuch C, 51, 3–40, 1989.; Gömann, H., Kreins, P., Kunkel, R., and Wendland, F.: Model based impact analysis of policy options aiming at reducing diffuse pollution by agriculture: a case study for the river Ems and a sub-catchment of the Rhine, Environ. Modell. Softw., 20(2), 261–271, 2004.; Henrichsmeyer, ...

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