HR: 11:05h
AN: H32B-04    [Abstracts]
TI: A National Drought Monitoring System in Spain
AU: * Alvarez-Rodriguez, J
EM: javier.alvarez@cedex.es
AF: Centro de Estudios Hidrogr ficos del CEDEX, C/Paseo Bajo de la Virgen del Puerto, 3, MADRID, ESP 28005 Spain
AU: Villaverde, J
EM: julio.villaverde@cedex.es
AF: Centro de Estudios Hidrogr ficos del CEDEX, C/Paseo Bajo de la Virgen del Puerto, 3, MADRID, ESP 28005 Spain
AU: Incio, L
EM: lara.incio@cedex.es
AF: Centro de Estudios Hidrogr ficos del CEDEX, C/Paseo Bajo de la Virgen del Puerto, 3, MADRID, ESP 28005 Spain
AB: There is a great concern in Spain about droughts. Authors refer an impact of 4.5 billion USs in lost crops because of the last one occurred during 1991-1995. Such kind of impacts motivated the inclusion of an article in the National Hydrological Law to implement a drought monitor system and plans to react against them. A system to watch water state and drought monitoring is being developed in CEDEX for the Spanish Ministry of Environment. The objective is to manage data of the whole Spanish territory. Variables managed are: rainfall, river flows, stored water in reservoirs and piezometric levels. Main remarkable points are: 1.Water state is evaluated in certain regions which are defined considering water resources, hydraulic network and water consumption 2.Monthly data is the basic time step 3.Water state is evaluated by means of percentiles estimated concerning to time series of monthly data, cumulated values from the onset of the hydrological year, cumulated values of the last 12 months and cumulated values of the last 3 months. Piezometric levels are represented using moving averaged values 4.Regional information are derived by weighting point data percentiles 5.Other drought indexes are used to identify meteorological droughts through the theory of runs and a critical parameter to join minor identified events. Also, annual minima (7day or 30day) flow quantiles are used 6.(In progress) To implement NDVI drought indexes Last hydrological year in Spain was characterised by the shortage of rainfall. A social awareness about the event raised and the system worked to identify deficits as well as the extension and evolution in time of the shortage. The system is still on development, but its state can be shown in the AGU meeting.
DE: 1812 Drought
SC: Hydrology [H]
MN: Fall Meeting 2005