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The integrated land ecosystem - atmosphere processes study iLEAPS. A new international research programme. Altimir, Nuria*,1, Aarflot, Asbjorn1, Boy, Michael1, Kinnunen, Petter1, Lappalainen, Hanna1, Reissell, Anni1, 1 iLEAPS international project office, Helsinki, Finland ABSTRACT- Transport and transformation of energy and matter across the land-atmosphere interface play a major role in controlling atmospheric composition, and affect climate, land cover and human health. To reflect a new integrated approach to Earth System Science, the project iLEAPS has been designed to study the interactions between land and atmosphere within the framework of the second phase of International Geosphere- Biosphere Programme IGBP. iLEAPS fosters international and multidisciplinary collaboration by initiating and recognising research activities, with a special welcoming for developing countries. A characteristic iLEAPS activity is interactive, international, cross-disciplinary, and combines models and measurements. iLEAPS research ranges from cell level to global scale, diurnal to centennial and past to future, encompassing thus a broad range of temporal and spatial scales. The research programme is illustrated in four foci: 1) land-atmosphere exchange of reactive and conservative compounds, 2) feedback between land biota, aerosols and atmospheric composition in the climate system, 3) feedback sand teleconnections in the land -vegetation-water-atmosphere system, 4) transfer of material and energy in the soil/canopy/boundary-layer system: measurements and modelling. Projects recognised by iLEAPS at the moment are AMMA (African Monsoon Multidisciplinary Analyses), IANABIS (Inter-American Network for Atmospheric/Biospheric Studies) and a starting project on FLARES (Fire-Land-Atmosphere Regional Ecosystem Studies). VOCBAS (Volatile Organic Compounds in the Biosphere-Atmosphere System) is recognised as iLEAPS supporting activity. Key words: Earth System Science, integration, measurements, modelling |
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