Rain In Spain Is On The Decline
Madrid, Spain (SPX) Feb 03, 2011
A study led by the University of Zaragoza (UNIZAR) has studied precipitation trends in Spain's 10 hydrological basins over the 1946 to 2005 period. The results show that precipitation has declined overall between the months of March and June, reducing the length of the rainy season. The rains are heavier in October in the north west of the country.
Since 1946, the average precipitation falling on Spanish hydrological basins has undergone "notable" changes. The researchers observed a widespread decline in March and June, above all in March (except in the basin of the Segura), with less intense rains in June.
"The basin of the Guadiana (in the south west of Spain) has experienced the strongest downward trend, with a reduction of 18%, while the positive trends recorded in the north west of the peninsula were less intense (the Norte, Douro and Tagus basins)", Jose Carlos Gonzalez-Hidalgo, lead author of the study and a researcher at the UNIZAR, tells SINC.
The study, which has been published in the journal Climate Research, shows that the decline in rainfall in March leads to a reduction in the duration of the wet season. Even with the trend recorded in October (increased precipitation), the total precipitation for the hydrological year is increasingly dependent on the onset of the wet season.
"In other words, it seems that the wet season has become shorter", explains Gonzalez-Hidalgo.
Understanding what is happening in the basins
Water is the most important resource in Spain, and it is managed by national water planning units at local level within the hydrological basins. "In order to plan the most effective way of using water, it is of fundamental importance to know what has happened in these basins, and what is happening now," the professor from the UNIZAR Department of Geography explains.
The data used to produce the study come from MOPREDAS, the most complete monthly precipitation database in mainland Spain, produced by the Department of Geography of the UNIZAR.
The UNIZAR researchers, working with the Czech Hydrometeorological Institute and the Institute of Atmospheric and Climate Science of Bologna (Italy), used all the records preserved in the archives of the Spanish State Meteorology Agency (AEMET).
Share This Article With Planet Earth
FECYT - Spanish Foundation for Science and Technology
Water News - Science, Technology and Politics
Beijing (AFP) Jan 21, 2011
China plans to invest $303 billion in water infrastructure projects over the next five years that would give millions of rural residents access to safe drinking water, state media reported. Severe flooding and droughts across the country last year destroyed crops and drove up food prices, pushing inflation to its highest level in more than two years, prompting the investment. Beijing wil ... read more
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement|