OZCAR-RI AMMA-CATCH
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Soil moisture and temperature profiles (0- ~5m) in various types of soil/vegetation.
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Rainfall measurements collected since 2005 (Long Observation Period) by recording raingauges deployed in the densified area : 1.2-1.9°W/15-15.7°N, up to 18 gages. NB: Negative values are missing values. Negative value other than -9999.9 is missing value estimated from the bucket. For a period with such missing data, although the same value is indicated for each timestep, the value applies to the whole time period.
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Flood event measured in 4 (Tondikiboro) and 2 (Mele Haoussa) embeded catchments. Sediment loads are sampled during selected rainfall events in Tondikiboro.
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Aboveground herbaceous mass, vegetation cover fraction, LAI are monitored in sites located within the Hombori super-site and representatives of the 3 main components of the landscape: sand dunes (Agoufou, Hombori Hondo, Tara and Timbadior), erosion surface (Eguerit), seasonally inundated clay soils (Kelma plain) and millet (Bilantao). For mass estimation, the herbaceous layer is monitored using a stratified random technique. Measurements are performed at least every month during the rainy season, from June to mid-October and twice during the dry season. LAI is estimated using hemispherical photographs. For the Kelma forest, hemispherical photographs are also used to derive the Plant Area Index (PAI).
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Rainfall measurements collected since 1999 by 5 recording raingauges deployed over the East Niger (Tillaberi, Konni, Tahoua, Maradi, Zinder). NB: Negative values are missing values. Negative value other than -9999.9 is missing value estimated from the bucket. For a period with such missing data, although the same value is indicated for each timestep, the value applies to the whole time period.
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Observation of the seasonal cover dynamics and funtionning. States of each phenophase were recorded using the following classification: 0 = absent, 1 = beginning, buds for leaves and flowers and early stage of maturity for fruits, 2 = weak, 10-50% of the shrub covered with mature or ripe organs, 3 = peak, over 50% of the shrub covered with mature or ripe organs, 4 = declining, 10-50% of the shrub covered with senescent organs (dissemination beginning for fruits), 5 = end, over 50% of the shrub covered with senescent, dry and falling organs.
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Soil moisture, temperature and succion profiles (0-~3m) along three catenae. Each catena is covered by a different vegetation type : herbaceous fallow (Nalohou), shrub fallow (Bira) and dry forest (Béléfoungou). On each catena, three stations are distributed on top, middle and bottom of a hillslope.
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Rainfall measurements collected since 2003 by a network of daily reading raingauges deployed in the Hombori super site.
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Local observers record water level and take photographs of the scale every 10 days during the wet season and about once a month during the dry season. For turbidity, water sample are collected by local observer, every 10 days during the wet season and about once a month during the dry season, and sent by bus to Bamako for analyzing turbidity using a turbidimeter. A value of turbidity of 1001 stands for a value exceeding the sensor sensitivity.
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Monitoring of water redistribution and transfert in a sand dune system at different depths along hillslopes by manual measurements performed with portable probes (ML2 and PR2 Delta-T) during intensive field campaigns during the rainy season. Field measurements using the portable probes are performed every 10 to 15 days during the rainy season and every 2 months during the dry season.