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Real evaporation trends Berbery, E. H. and V. R. Barros 2002: The hydrologic cycle of the La Plata basin in South America. J. Hydrometeor., 3, 630-645. Liebmann, B., C. Vera, L. Carvalho, I. Camilloni, V. Barros, M. Hoerling and D. Allured 2004: An Observed Trend in Central South American Precipitation. J. Climate, 17, 4357-4367. Thornthwaite, C. W. 1948: An approach toward a rational classification of climate. Geographical Review, 38, 55-94. Walter, M. T., D. Wilks, Y. Parlange and R. Shneider 2004: Increasing Evapotranspiration from the Conterminous United States. J. Hydrometeor., 5, 405-408. 103
ABSTRACT The water, as resource, is already under pressure in certain zones of the La Plata Basin as a consequence of the growing demand. The main problems of the basin are discussed, that is, the floods and the vulnerability of some ecosystems, particularly wetlands. It is also examined the provision of drinking water and the urban drainage, the agricultural use and the hydropower generation. The regional dependence of the hydropower is discussed as well as some aspects of the large dams. It is discussed what climatic changes associated to global change can affect negatively the availability of the water resources, damaging different sectors as the provision of drinking water, the generation of energy and the river transportation. 104 CHAPTER THE MAIN SERVICES AND PROBLEMS OF WATER RESOURCES Lucas Chamorro 1 1 Universidad de Asunción, Paraguay. VIII
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CLIMATE CHANGE IN THE LA PLATA BASI
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INDEX FOREWORD . . . . . . . . . .
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7.3. Methodology . . . . . . . . .
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13.3. Regional validation of GCM fo
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1.1. Dropping the hypothesis of sta
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Introduction as they pour water ove
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A better understanding of the obser
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References Introduction Barros, V.
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ABSTRACT The hydrologic cycle of th
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La Plata basin climatology Within t
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in this last description, although
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warm season (October-April), in the
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La Plata basin climatology b. Upper
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La Plata basin climatology 2.3.3. R
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La Plata basin climatology Fig. 2.8
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2.3.7. West and South borders La Pl
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References La Plata basin climatolo
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La Plata basin climatology Robertso
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3.1. Introduction Interannual low f
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Interannual low frequency variabili
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1989). This signal varies along eac
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Interannual low frequency variabili
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The main physiographic and hydrolog
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SUB-BASIN COUNTRY Argentina Bolivia
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the most important stretches of the
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Physiography and Hydrology The Para
Page 53 and 54: Physiography and Hydrology The Pant
Page 55 and 56: Physiography and Hydrology forcings
Page 57 and 58: Physiography and Hydrology It is no
Page 59 and 60: Physiography and Hydrology tion of
Page 61 and 62: Physiography and Hydrology INTERNAV
Page 63 and 64: 5.1. Introduction Precipitation and
Page 65 and 66: From 1956 to 1991, in most of the A
Page 67 and 68: -15 -20 -25 -30 -35 -40 -15 -20 -25
Page 69 and 70: Regional precipitation trends 5.3.2
Page 71 and 72: Regional precipitation trends and L
Page 73 and 74: trast, other regions suffer floodin
Page 75 and 76: ABSTRACT The main hydrological tren
Page 77 and 78: Following are the observed changes:
Page 79 and 80: In the case of the Paraná River th
Page 81 and 82: Hydrological trends In order to com
Page 83 and 84: Hydrological trends In table 6.1 it
Page 85 and 86: Hydrological trends On the other ha
Page 87 and 88: the central area of the high basin
Page 89 and 90: 7.1. Introduction Several authors,
Page 91 and 92: Real evaporation trends a) PET > Pi
Page 93 and 94: a) b) c) Mean Temperature Real evap
Page 97 and 98: The positive trends of the mean tem
Page 99 and 100: d) e) f) Mean Temperature Real evap
Page 103: 7.5. Discussion and final comments
Page 107 and 108: puts in risk large number of person
Page 109 and 110: The main services and problems of w
Page 111 and 112: There are similar problems in diffe
Page 113 and 114: 8.3.3. Energy a. Hydroelectric depe
Page 115 and 116: (chapters 12 and 13), because of th
Page 117 and 118: The main services and problems of w
Page 119 and 120: 9.1. Introduction The emissions of
Page 121 and 122: 9.4. Greenhouse effect The atmosphe
Page 123 and 124: Temperature anomalies (°C) 0.8 0.6
Page 125 and 126: Global climatic change at a global
Page 127 and 128: In view of the unavoidability of th
Page 129 and 130: Background on other regional aspect
Page 135 and 136: Considering the non-linear interact
Page 137 and 138: SST anomalies also have influence o
Page 141 and 142: ABSTRACT The purpose of this chapte
Page 143 and 144: Global climate models Mid-1970’s
Page 145 and 146: Global climate models Table 11.1. B
Page 147 and 148: Global climate models Table 11.2. M
Page 149 and 150: Although changes in weather and cli
Page 151 and 152: Socio-economic variables and also s
Page 153 and 154: Applicability in impact assessments
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of the global climate system to the
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Climate scenarios B2: Assumes a wor
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Climate scenarios The reliability o
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Climate scenarios From Table 12.2 i
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Climate scenarios Fig. 12.5. The mu
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Climate scenarios this would be rel
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Results of global circulation model
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13.2.3. Statistical downscaling The
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La Plata basin are also considerabl
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10 N EQ 10 S 20 S 30 S 40 S 50 S 10
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Regional climatic scenarios Fig. 13
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a. Pre-industrial experiment: Initi
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Regional climatic scenarios Kalnay,
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Low-frequency variability 14.1. Bac
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egime occurred during the periods o
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Fig. 14.2. As Fig. 14.1, except for
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14.4. SST composites Low-frequency
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Low-frequency variability during th
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Fig. 14.10. As Fig. 14.9, except fo
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Low-frequency variability In genera
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Low-frequency variability Mantua, N
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15.1. Introduction Statistical anal
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Statistical analysis of extreme eve
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CURRÍCULA OF THE AUTHORS Vicente B
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Curricula of the autors Rubén Mari
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Proyect: SGP II 057: “Trends in t
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