The Multiscale TROPIcal CatchmentS critical zone observatory M‐TROPICS dataset I: The Nyong River Basin, Cameroon

Simultaneously acquiring time series of climate, hydrology and hydrochemical data over decades on river systems is pivotal to understand the complex interactions involving rock, soil water, air and biota in the Critical Zone, to build integrated modelling and to propose predictive scenarios. Among t...

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Bibliographic Details
Published in:	Hydrological processes Vol. 35; no. 5
Main Authors:	Audry, Stéphane, Ateba Bessa, Henriette, Bedimo Bedimo, Jean‐Pierre, Boeglin, Jean‐Loup, Boithias, Laurie, Braun, Jean‐Jacques, Dupré, Bernard, Faucheux, Mikael, Lagane, Christelle, Maréchal, Jean‐Christophe, Ndam‐Ngoupayou, Jules Remy, Nka Nnomo, Bernadette, Nlozoa, Justin, Ntonga, Jean‐Claude, Ribolzi, Olivier, Riotte, Jean, Rochelle‐Newall, Emma, Ruiz, Laurent
Format:	Journal Article
Language:	English
Published:	Hoboken, USA John Wiley & Sons, Inc 01.05.2021 Wiley Subscription Services, Inc Wiley
Subjects:	air Air temperature Alkalinity Biodiversity Biodiversity hot spots biomass Biota Cameroon Carbon budget Catchments Chemical weathering CZO data collection Datasets Denudation Dissolved organic carbon Electrical conductivity Electrical resistivity Erosion control Erosion processes Fluxes Global radiation Greenhouse gases humid tropics Hydrochemicals hydrochemistry Hydrologic models Hydrologic regime Hydrology Inland waters Land use land use and land cover maps Life Sciences Modelling Moisture content monitoring Observatories Organic carbon Organic matter Outlets Particulate emissions Particulate matter particulates Population density Rain Rainfall Relative humidity River basins River systems River water Rivers saprolite Soil water Solutes Stream discharge Stream flow streams Suspended particulate matter time series analysis Tributaries Tropical environments Water levels Water sources Water temperature Watersheds Weathering Wind speed Cameroon CZO humid tropics Cameroon weathering hydrochemistry monitoring
ISSN:	0885-6087, 1099-1085
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Summary:	Simultaneously acquiring time series of climate, hydrology and hydrochemical data over decades on river systems is pivotal to understand the complex interactions involving rock, soil water, air and biota in the Critical Zone, to build integrated modelling and to propose predictive scenarios. Among the Critical Zone Observatories (CZOs) implemented in the past 25 years, only a few are located in the humid Tropics despite the importance of these regions in terms of population density, fast‐changing land use, biodiversity hotspots, biomass stock on continents, size of river systems, etc. Since 1994, weathering and erosion processes and fluxes have been investigated at both local (experimental watershed) and regional scales in the Nyong River Basin (Cameroon) which belongs to the Critical Zone Observatories network named Multiscale TROPIcal CatchmentS (M‐TROPICS). The data shared by M‐TROPICS in Cameroon are: (1) rainfall; (2) air temperature, air relative humidity, wind speed and direction, and global radiation; (3) stream and river water level; (4) pH, electrical conductivity, water temperature and suspended particulate matter (SPM) concentration; (5) major ion, alkalinity and dissolved organic carbon (DOC) concentrations. The dataset already contributed to describe the water partitioning in these tropical humid watersheds, to better understand the factors controlling chemical weathering and physical erosion in tropical ecosystems, particularly the role of organic matter. The dataset also contributed to calculate elemental weathering fluxes and saprolite production rate and to propose denudation rates on tropical cratonic landscapes. Hydrological modelling allowed quantification of the geographical water sources contributing to streamflow. DOC data were used to determine greenhouse‐gas emissions and carbon budgets from African inland waters. However, long‐term solute concentrations at the outlet of a small tributary of the Nyong River exhibit non‐stationary behaviour over the last 26 years. The processes governing those fluctuations are not yet fully understood and might be related to changes in the hydrological regime, land‐cover and land‐use. The latter highlights the need for longer time‐series and continued support for CZOs particularly in the humid tropics. Since 1994, weathering and erosion processes and fluxes have been investigated at local (experimental watershed) and regional scales in the Nyong River Basin (Cameroon) which belongs to the CZO network M‐TROPICS. The data shared by M‐TROPICS in Cameroon are: (1) rainfall; (2) air temperature, air relative humidity, wind speed and direction, and global radiation; (3) stream and river water level; (4) pH, electrical conductivity, water temperature and suspended particulate matter concentration; (5) major ion, alkalinity and dissolved organic carbon concentrations.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0885-6087 1099-1085
DOI:	10.1002/hyp.14138