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  • 1
    Online Resource
    Online Resource
    Dordrecht :Springer Netherlands,
    Keywords: Climatology--Data processing. ; Climatology--Computer simulation. ; Climatology--Mathematical models. ; Electronic books.
    Description / Table of Contents: A Guide to Empirical Orthogonal Functions for Climate Data Analysis introduces the reader to a practical application of the methods used in the field, including data sets from climate simulations and MATLAB codes for the algorithms.
    Type of Medium: Online Resource
    Pages: 1 online resource (150 pages)
    Edition: 1st ed.
    ISBN: 9789048137022
    DDC: 551.60285
    Language: English
    Note: A Guide to Empirical Orthogonal Functions for Climate Data Analysis -- 1 Introduction -- 2 Elements of Linear Algebra -- 2.1 Introduction -- 2.2 Elementary Vectors -- 2.3 Scalar Product -- 2.4 Linear Independence and Basis -- 2.5 Matrices -- 2.6 Rank, Singularity and Inverses -- 2.7 Decomposition of Matrices: Eigenvalues and Eigenvectors -- 2.8 The Singular Value Decomposition -- 2.9 Functions of Matrices -- 3 Basic Statistical Concepts -- 3.1 Introduction -- 3.2 Climate Datasets -- 3.3 The Sample and the Population -- 3.4 Estimating the Mean State and Variance -- 3.5 Associations Between Time Series -- 3.6 Hypothesis Testing -- 3.7 Missing Data -- 4 Empirical Orthogonal Functions -- 4.1 Introduction -- 4.2 Empirical Orthogonal Functions -- 4.3 Computing the EOFs -- 4.3.1 EOF and Variance Explained -- 4.4 Sensitivity of EOF Calculation -- 4.4.1 Normalizing the Data -- 4.4.2 Domain of Definition of the EOF -- 4.4.3 Statistical Reliability -- 4.5 Reconstruction of the Data -- 4.5.1 The Singular Value Distribution and Noise -- 4.5.2 Stopping Criterion -- 4.6 A Note on the Interpretation of EOF -- 5 Generalizations: Rotated, Complex, Extended and Combined EOF -- 5.1 Introduction -- 5.2 Rotated EOF -- 5.3 Complex EOF -- 5.4 Extended EOF -- 5.5 Many Field Problems: Combined EOF -- 6 Cross-Covariance and the Singular Value Decomposition -- 6.1 The Cross-Covariance -- 6.2 Cross-Covariance Analysis Using the SVD -- 7 The Canonical Correlation Analysis -- 7.1 The Classical Canonical Correlation Analysis -- 7.2 The Modes -- 7.3 The Barnett-Preisendorfer Canonical Correlation Analysis -- 8 Multiple Linear Regression Methods -- 8.1 Introduction -- 8.1.1 A Slight Digression -- 8.2 A Practical PRO Method -- 8.2.1 A Different Scaling -- 8.2.2 The Relation Between the PRO Methodand Other Methods -- 8.3 The Forced Manifold -- 8.3.1 Significance Analysis. , 8.4 The Coupled Manifold -- References -- Index.
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  • 2
    Publication Date: 2017-04-04
    Description: In this work we present and discuss the results obtained from a set of present and future climate simulations performed with a high-resolution model able to represent the dynamics of the Mediterranean Sea. The ability of the model to reproduce the basic features of the observed climate in the Mediterranean region and the beneficial effects of both atmospheric improved resolution and interactive Mediterranean Sea are assessed. In particular, the major characteristics of the variability in the Mediterranean basin and its connection with the large-scale circulation are investigated. Furthermore, the mechanisms through which global warming might affect the regional features of the climate are explored, focusing especially on the characteristics of the hydrological cycle.
    Description: Unpublished
    Description: Wien
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: open
    Keywords: euro-mediterranean region ; climate variability ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Oral presentation
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  • 3
    Publication Date: 2017-04-04
    Description: This study investigates the possible changes that the greenhouse global warming might generate in the character- istics of the tropical cyclones (TCs). The analysis has been performed using climate scenario simulations carried out with a fully coupled high–resolution global general circulation model (INGV-SXG) with a T106 atmospheric resolution. The capability of the model to reproduce a reasonably realistic TC climatology has been assessed by comparing the model results from a simulation of the XX Century with observations. The model appears to be able to simulate tropical cyclone-like vortices with many features similar to the observed TCs. The simulated TC activity exhibits realistic geographical distribution, seasonal modulation and interannual variability, suggesting that the model is able to reproduce the major basic mechanisms that link the TC occurrence with the large scale circulation. The results from the climate scenarios reveal a substantial general reduction of the TC frequency when the atmospheric CO2 concentration is doubled and quadrupled. The reduction appears particularly evident for the tropical north west Pacific (NWP) and north Atlantic (ATL). In the NWP the weaker TC activity seems to be associated with a reduced amount of convective instabilities. In the ATL region the weaker TC activity seems to be due to both the increased stability of the atmosphere and a stronger vertical wind shear. Despite the generally reduced TC activity, there is evidence of increased rainfall associated with the simulated cyclones. Using the new fully coupled CMCC model (CMCC_MED), with a T159 atmospheric resolution, we found a significant modulation of the Ocean Heat Transport (OHT) induced by the TC activity. Thus the possible changes that greenhouse induced global warming during 21st century might generate in the characteristics of the TC-induced OHT have been analyzed.
    Description: Unpublished
    Description: Wien
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: open
    Keywords: Tropical cyclones ; climate variability ; air-sea interaction ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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