Objectif TO ASSESS THE POTENTIAL CONTRIBUTION OF CHANGING ATMOSPHERIC CONDITIONS TO THE VARIABILITY OF ACIDIC DEPOSITION ON YEARLY AND, IN PARTICULAR, DECADAL TIMESCALES. THE RESEARCH PROJECT INCLUDES: - COLLECTION AND COLLATION OF CHEMISTRY DATA (EMEP, OECD, EACN ETC). CO-OPERATION AND COLLABORATION HAS ALREADY BEEN ESTABLISHED WITH ALL RELEVANT PARTIES. IT MAY BE NECESSARY TO UNDERTAKE SOME QUALITY ASSESSMENT OF THE COMPOSITION DATA. ACIDIC SPECIES DATA WILL BE ANALYSED AND SUMMARISED BY TECHNIQUES UNDER DEVELOPMENT AT THE UNIVERSITY. THESE TECHNIQUES ALLOW THE RELATIONSHIPS BETWEEN PROPORTIONAL IONIC COMPOSITION AND TRAJECTORY LENGTH TO BE ELUCIDATED. BASIC DESCRIPTIVE STATISTICS WILL BE DERIVED, SUCH AS THE FREQUENCY OF "CONCENTRATION" AND "DEPOSITION" EPISODES. - TRAJECTORY AND WEATHER-TYPE ANALYSIS ON AN "EVENT" BASIS FOR THE PERIOD OF "DAILY" CHEMICAL DATA. A NUMBER OF RECEPTOR SITES WILL BE CHOSEN ON THE BASIS OF "REPRESENTATIVENESS". IT MAY BE NECESSARY TO DEVISE NEW "WEATHER TYPE" INDICIES. OTHER PERTINENT FACTORS, SUCH AS FREQUENCY DISTRIBUTIONS OF PRECIPITATION, PRECIPITATION TYPE, AND STABLE ATMOSPHERIC LAYERS, WILL BE CONSIDERED. Programme(s) PRE-ENVPROT 3C - Sectoral research and development programme (EEC) in the field of environment (environmental protection and climatology) - indirect and concerted actions - Environmental protection -, 1981-1985 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur University of East Anglia Contribution de l’UE Aucune donnée Adresse University Plain NR4 7TJ Norwich Royaume-Uni Voir sur la carte Coût total Aucune donnée