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    Biogeographic regions are endowed areas of relatively homogeneous ecological conditions with common characteristics.

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    Location of the current manual sensors belonging to the Network of Vigilance and Prevision for Atmospheric Pollution of Catalonia (XVPCA), with measurements of pollutants and meteorologic parametres. The XVPCA is a detection system which measures inmission levels of the main pollutants. It has been created to complywith Law 22/1983, of 21st Novembre, and its Order of 20th June 1986, and it is administratively run by the Environment and Housing Department of the Generalitat de Catalunya (DMAH-GenCat).

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    The territory is divided into areas according to the dispersion conditions and emissions of air pollutants.

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    The Atlas focuses on the climatic characterization of Catalonia in the period 1961-1990. This climate period has been established by the World Meteorological Organization as one of the international reference periods for climate series statistics. It consists of thermopluviometric information structured in 32 layers: 18 layers of precipitation (12 of the monthly averages, 4 of the seasonal averages, 1 of the annual average and 1 of the seasonal pluviometric regime); and 14 temperature layers (12 of the monthly averages, 1 of the annual average, and 1 of the annual average thermal amplitude). It is a database with 2D vector information at a scale of 1: 750 000.

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    Map of protection from light pollution in Catalonia approved by the Department of the Environment and Housing on 19 December 2007.

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    Map of protection from light pollution in Catalonia approved by the Department of the Environment and Housing on 19 December 2007.

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    Map of protection from atmospheric pollution approved through Decree 226/2006, of 23 May.

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    Location of the automatic sensors belonging to the Network of Vigilance and Prevision for Atmospheric Pollution of Catalonia (XVPCA), with measurements of pollutants and meteorologic parametres. The XVPCA is a detection system which measures inmission levels of the main pollutants. It has been created to complywith Law 22/1983, of 21st Novembre, and its Order of 20th June 1986, and it is administratively run by the Environment and Housing Department of the Generalitat de Catalunya (DMAH-GenCat).

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    The XDDE provides information on the identification, location and status of the set of geographic information Network for the Detection of atmospheric Electric Discharges v1.0 (XDDE) owned by the Meteorological Service of Catalonia. The system allows the real-time detection of storms, as well as the very short-term forecast of their trajectory. The XDDE consists of four remote stations and a central processing system located at the SMC headquarters. The stations are located in Begues (el Baix Llobregat), Castellnou de Seana (el Pla d’Urgell), Muntanyola (Osona) and Amposta (el Montsià). The arrangement of the detectors is designed to provide good coverage throughout Catalonia, with an error in the location of lightning less than a kilometer for much of Catalonia. It is a 2D vectorial set of geographic information at 1:5,000 scale.

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    The XRAD provides information on the identification, location and status of the network of radars (XRAD) owned by the Meteorological Service of Catalonia, which has four radars integrated into the XRAD. The XRAD is designed for the identification of meteorological echoes in the atmosphere and to provide quantitative estimates of rainfall of great meteorological and hydrological interest. The network is made up of four Doppler type radars that operate in band C: the radar of Vallirana, the radar of Puig d’Arques, the radar of Panadella and the radar of Tivissa-Llaberia. It is a 2D vectorial set of geographic information at 1:5,000 scale.