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Simulation of Groundwater-Surface Water Interactions under Different Land Use Scenarios in the Bulang Catchment, Northwest China

Yang, Z. (author), Zhou, Y. (author), Wenninger, J. (author), Uhlenbrook, S. (author), Wan, L. (author)

Groundwater is the most important resource for local society and the ecosystem in the semi-arid Hailiutu River catchment. The catchment water balance was analyzed by considering vegetation types with the Normalized Difference Vegetation Index (NDVI), determining evapotranspiration rates by combining sap flow measurements and NDVI values,...

journal article 2015

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Ecosystem service monitoring using remote sensing, citizen science and other ground observations and current practices in Vietnam

Pham, N.Q. (author), Tran, H.N. (author), Thi, K.V.L. (author), Nong, A.B. (author), Rutten, M.M. (author)

Ecosystems are providing a stream of essential goods and services for the national socio-economic prosperity and welfare; paradoxically, these services have to suffer a high vulnerability against the increasingly uncontrolled use of human beings. World-wide researchers and authorities are working to ensure the sustainability of nature; and...

conference paper 2015

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Predicting the ungauged basin: Model validation and realism assessment

Van Emmerik, T.H.M. (author), Mulder, G. (author), Eilander, D. (author), Piet, M. (author), Savenije, H.H.G. (author)

The hydrological decade on Predictions in Ungauged Basins (PUB) led to many new insights in model development, calibration strategies, data acquisition and uncertainty analysis. Due to a limited amount of published studies on genuinely ungauged basins, model validation and realism assessment of model outcome has not been discussed to a great...

journal article 2015

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Analyzing the inundation pattern of the Poyang Lake floodplain by passive microwave data

Shang, H. (author), Li, J. (author), Menenti, M. (author)

The soil wetness condition is a useful indicator of inundation hazard in floodplains, such as the Poyang Lake floodplain. Special Sensor Microwave Imager (SSM/I) passive microwave data were used to monitor water-saturated soil and open water areas of the Poyang Lake floodplain from 2001 to 2008, capturing the inundation patterns of this area in...

journal article 2015

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Estimation of Aerodynamic Roughness Length over Oasis in the Heihe River Basin by Utilizing Remote Sensing and Ground Data

Chen, Q. (author), Jia, L. (author), Hutjes, R. (author), Menenti, M. (author)

Most land surface models require information on aerodynamic roughness length and its temporal and spatial variability. This research presents a practical approach for determining the aerodynamic roughness length at fine temporal and spatial resolution over the landscape by combining remote sensing and ground measurements. The basic framework of...

journal article 2015

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Moisture in the topsoil: From large-scale observations to small-scale process understanding

Rutten, M.M. (author)

The boundary that separates the earth from the atmosphere is a crucial zone of study for meteorology and hydrology. Here, solar energy is partitioned into sensible heat which drives atmospheric circulation, latent heat needed for evaporation from the soil and transpiration of vegetation, and soil heat which warms the subsurface. Precipitation is...

doctoral thesis 2015

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Aerosol direct radiative effect of smoke over clouds over the southeast Atlantic Ocean from 2006 to 2009

De Graaf, M. (author), Bellouin, N. (author), Tilstra, L.G. (author), Haywood, J. (author), Stammes, P. (author)

The aerosol direct radiative effect (DRE) of African smoke was analyzed in cloud scenes over the southeast Atlantic Ocean, using Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) satellite observations and Hadley Centre Global Environmental Model version 2 (HadGEM2) climate model simulations. The observed mean DRE...

journal article 2014

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Earth observation based assessment of the water production and water consumption of Nile basin agro-ecosystems

Bastiaanssen, W.G.M. (author), Karimi, P. (author), Rebelo, L.M. (author), Duan, Z. (author), Senay, G. (author), Muttuwatte, L. (author), Smakhtin, V. (author)

The increasing competition for water resources requires a better understanding of flows, fluxes, stocks, and the services and benefits related to water consumption. This paper explains how public domain Earth Observation data based on Moderate Resolution Imaging Spectroradiometer (MODIS), Second Generation Meteosat (MSG), Tropical Rainfall...

journal article 2014

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Retrieval of liquid water cloud properties from ground-based remote sensing observations

Knist, C.L. (author)

Accurate ground-based remotely sensed microphysical and optical properties of liquid water clouds are essential references to validate satellite-observed cloud properties and to improve cloud parameterizations in weather and climate models. This requires the evaluation of algorithms for retrieval of cloud microphysical and optical properties...

doctoral thesis 2014

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Monitoring of irrigation schemes by remote sensing: Phenology versus retrieval of biophysical variables

Akdim, N. (author), Alfieri, S.M. (author), Habibi, A. (author), Choukri, A. (author), Cheruiyot, E.K. (author), Labbassi, K. (author), Menenti, M. (author)

The appraisal of crop water requirements (CWR) is crucial for the management of water resources, especially in arid and semi-arid regions where irrigation represents the largest consumer of water, such as the Doukkala area, western Morocco. Simple and (semi) empirical approaches have been applied to estimate CWR: the first one is called Kc-NDVI...

journal article 2014

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Water Accounting Plus for Water Resources Reporting and River Basin Planning

Karimi, P. (author)

This thesis introduces Water Accounting Plus (WA+), which is a new framework designed to provide explicit spatial information on water depletion and net withdrawal processes in complex river basins. WA+ is a simple, yet comprehensive and understandable water accounting framework that provides a standardized way of data collection and a...

doctoral thesis 2014

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Remotely sensed monitoring of small reservoir dynamics: A Bayesian approach

Eilander, D.M. (author), Annor, F.O. (author), Iannini, L. (author), Van de Giesen, N.C. (author)

Multipurpose small reservoirs are important for livelihoods in rural semi-arid regions. To manage and plan these reservoirs and to assess their hydrological impact at a river basin scale, it is important to monitor their water storage dynamics. This paper introduces a Bayesian approach for monitoring small reservoirs with radar satellite images....

journal article 2014

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Mapping evapotranspiration trends using MODIS and SEBAL model in a data scarce and heterogeneous landscape in Eastern Africa

Kiptala, J.K. (author), Mohamedi, Y. (author), Mul, M.L. (author), Van der Zaag, P. (author)

Evapotranspiration (ET) accounts for a substantial amount of the water use in river basins particular in the tropics and arid regions. However, accurate estimation still remains a challenge especially in large spatially heterogeneous and data scarce areas including the Upper Pangani River Basin in Eastern Africa. Using multitemporal Moderate...

journal article 2013

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Parameterization of Surface Roughness Based on ICESat/GLAS Full Waveforms: A Case Study on the Tibetan Plateau

Shi, J. (author), Menenti, M. (author), Lindenbergh, R. (author)

Glaciers in the Tibetan mountains are expected to be sensitive to turbulent sensible and latent heat fluxes. One of the most significant factors of the energy exchange between the atmospheric boundary layer and the glacier is the roughness of the glacier surface. However, methods to parameterize this roughness for glacier surfaces in remote...

journal article 2013

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Rip current predictions through model-data assimilation on two distinct beaches

Van Dongeren, A. (author), Van Ormondt, M. (author), Sembiring, L. (author), Sasso, R. (author), Austin, M. (author), Briere, C. (author), Swinkels, C. (author), Roelvink, J.A. (author), Van Thiel De Vries, J.S.M. (author)

This paper describes the development of a physics-based rip current prediction system called CoSMoS. This system consists of a hydrodynamic prediction system which is composed of a train of surge and wave models from the global scale to the scale of a beach resort (order kilometers). For the beach resort scale model, it is of utmost importance...

conference paper 2013

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Monitoring morphology of the sand engine leeside using Argus' cBathy

Wengrove, M.E. (author), Henriquez, M. (author), De Schipper, M.A. (author), Holman, R. (author), Stive, M.J.F. (author)

The Sand Engine is a mega-nourishment constructed in 2011 with the purpose of replenishing the surrounding southern Dutch coast by exploiting the strength of local alongshore currents for the next 20 years. Long term monitoring of the Sand Engine depends upon remote sensing coupled with in-situ measurements due to both its large spatial and...

conference paper 2013

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Monitoring of beach surface properties with remote sensing

Hoonhout, B.M. (author), De Vries, S. (author), Baart, F. (author), Van Thiel De Vries, J.S.M. (author), Van der Weerd, L. (author), Wijnberg, K. (author)

Existing aeolian transport formulae tend to overestimate the sediment transport volumes in coastal environments. Supply limiting factors like moisture content, shell patches, sediment sorting, vegetation and morphological features are believed to explain these overestimations. These supply limitations act on a variety of spatio-temporal scales...

conference paper 2013

document

Robotization in Seismic Acquisition

Blacquière, G. (author), Berkhout, A.J. (author)

The amount of sources and detectors in the seismic method follows "Moore’s Law of seismic data acquisition", i.e., it increases approximately by a factor of 10 every 10 years. Therefore automation is unavoidable, leading to robotization of seismic data acquisition. Recently, we introduced a new source concept that replaces today’s complex, local...

journal article 2013

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Air quality over the Canadian oil sands: A first assessment using satellite observations

McLinden, C.A. (author), Fioletov, V. (author), Boersma, K.F. (author), Krotkov, N. (author), Sioris, C.E. (author), Veefkind, J.P. (author), Yang, K. (author)

Results from the first assessment of air quality over the Canadian oil sands–one of the largest industrial undertakings in human history–using satellite remote sensing observations of two pollutants, nitrogen dioxide (NO2) and sulfur dioxide (SO2), are presented. High-resolution maps were created that revealed distinct enhancements in both...

journal article 2012

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Integrating GIS, remote sensing and mathematical modelling for surface water quality management in irrigated watersheds

Azab, A.M. (author)

The intensive uses of limited water resources, the growing population rates and the various increasing human activities put high and continuous stresses on these resources. Major problems affecting the water quality of rivers, streams and lakes may arise from inadequately treated sewage, poor land use practices, inadequate controls on the...

doctoral thesis 2012