Objective The fundamental aim of the Cloud Archive User Service (CLAUS) project is to provide dimate modellers with easy access to an archive of satellite based doud data. This aim can be sub-divided into three separate, measurabie objectives: Objective 1Data set provision It is proposed to prepare an archive of integrated satellite images based upon data from the Intemationai Satellite Cloud Climatology Project (ISCCP) and covering the period 1983 - present. In response to customer requirements these data will be produced on a reguiar 0.5ø grid at 3-hourly intervals. The data processing method wili be based on a technically proven method developed using single year of data. Objective 2Data Access The data, and descriptions of the integration methods employed, would be made freely available over the network using the CEO European Wide Service Exchange (EWSE). Objective 3 Operational Testing The archived data will be tested by the participating dimate research groups in an operational environment over an extended period. Folbwing an inffial testing phase, modffications may be made in consultation with the users. The customers for CLAUS are global climate modeilers and climate researchers who need to compare observed data (as provided by CLAUS) with their own model outputs. Such comparisons would allow the models to be improved and be of enormous benefit to the dimate modelling community. The developrnent of General Circulation Models (GCMs) able to reproduce climate variables on various spatial and temporal scales, coupled with increases in computing power, has ied to greatly increased understanding of the world's climate. However, there are very real difficulties in validating the models; the Intergovemmental Panel on Climate Change (IPCC) has identified the provision ot observational data tor GCMs as oelng a critkal tactor in thelr validation and Improvement (IPCC, 1992). Further, the IPCC identified inadeeguate understanding ot clouds as belng among the key uncertalnties in climate understanding (IPCC, 1992). These concerns were re-emphasised in the recent 1996 report tlPCC, 1996). This project is customer driven. The project will be co-ordinated by the UK NERC Environmental Systems Science Centre (ESSC), who are an interdisciplinary group with a stong background in linking models with observations. Five of the six major climate modelling centres in Europe are active partners: Centre National de Recherches Meteorologie (CNRM), France; laboratoire de Meteorologie Dynamique (LMD), France; Max-Pianck- Institut fur Meteorologie (MPI), Germany; UK Universities Global Atmospheric Modelling Programme (UGAMP). UK; European Centre for Medium-Range Weather Forecasts (ECMWF), European; and the other major climate modelling centre, the UK Hadley Centre, will be collaborating closely. The National Remote Sensing Centre, UK will be acting as a subcontractor to the other partners in order to develop the necessary data pocessing software and the archiving system. The UK Department of the Environment (DoE) have expressed an interest in continuing with operational funding beyond the completion of an initial pre-operational CEO project. KEYWORDS: Cloud Archive, Satellite data, GCM, EWSE, operational testing, data access Fields of science natural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologynatural sciencescomputer and information sciencessoftwareengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringsatellite technologynatural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changesnatural sciencescomputer and information sciencesdata sciencedata processing Programme(s) FP4-ENV 2C - Specific programme of research and technological development in the field of environment and climate, 1994-1998 Topic(s) 0303 - Centre for earth observation Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator UNIVERSITY OF READING Address 3 early gate RG6 6AL Reading / silchester United Kingdom See on map EU contribution € 0,00 Participants (6) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France EU contribution € 0,00 Address Ecole polytechnique 91128 Palaiseau See on map European Centre for Medium-range Weather Forecasts - ECMWF United Kingdom EU contribution € 0,00 Address Shinfield park RG2 9AX Reading See on map Links Website Opens in new window MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V. Germany EU contribution € 0,00 Address Bundesstra¯e 55 20146 Hamburg See on map METEO-FRANCE France EU contribution € 0,00 Address 42,avenue g. coriolis 42 31057 Toulouse See on map National Remote Sensing Centre Ltd United Kingdom EU contribution € 0,00 Address GU140NL Farnborough See on map University of Reading United Kingdom EU contribution € 0,00 Address 2 earley gate whiteknights RG6 6BB Reading See on map