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Deriving root zone storage capacity from Earth observation

Wang, L. (author), Gao, H. (author), Bastiaanssen, W.G.M. (author), Jagermeyr, J. (author), Keys, P. (author)

journal article 2015

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Climate controls how ecosystems size the root zone storage capacity at catchment scale

Gao, H. (author), Hrachowitz, M. (author), Schymanski, S. (author), Fenicia, F.F. (author), Sriwongsitanon, N. (author), Savenije, H.H.G. (author)

journal article 2015

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Global operational hydrological forecasts through eWaterCycle

Van de Giesen, N.C. (author), Bierkens, M. (author), Donchyts, G. (author), Drost, N. (author), Hut, R.W. (author), Sutanudjaja, E. (author)

journal article 2015

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Stability of a series of controlled channels with uncertain parameters

Kolechkina, A.G. (author), Van Nooyen, R.R.P. (author)

journal article 2015

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Effect of cloud microphysics on particle growth under mixed phase conditions

Pfitzenmaier, L. (author), Dufournet, Y. (author), Unal, C.M.H. (author), Russchenberg, H.W.J. (author), Myagkov, A. (author), Seifert, P. (author)

journal article 2015

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Modelling of sedimentation processes inside Roseires Reservoir (Sudan)

Omer, A.Y.A. (author), Ali, Y.S.A. (author), Roelvink, J.A. (author), Dastgheib, A. (author), Paron, P. (author), Crosato, A. (author)

Roseires Reservoir, located on the Blue Nile River in Sudan, is the first trap to the sediments coming from the vast upper river catchment in Ethiopia, which suffers from high erosion and desertification problems. The reservoir has already lost more than one-third of its storage capacity due to sedimentation in the last four decades. Appropriate...

journal article 2015

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Identifying water mass depletion in northern Iraq observed by GRACE

Mulder, G. (author), Olsthoorn, T.N. (author), Al-manmi, D.A.M.A. (author), Schrama, E.J.O. (author), Smidt, E.H. (author)

Observations acquired by Gravity Recovery And Climate Experiment (GRACE) mission indicate a mass loss of 146 ± 6 mm equivalent water height (EWH) in northern Iraq between 2007 and 2009. These data are used as an independent validation of lake mass variations and a rainfall-runoff model, which is based on local geology and climate conditions....

journal article 2015

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OMI tropospheric NO2 profiles from cloud slicing: Constraints on surface emissions, convective transport and lightning NOx (discussion paper)

Belmonte Rivas, M. (author), Veefkind, J.P. (author), Eskes, H. (author), Levelt, P.F. (author)

We derive a global climatology of tropospheric NO2 profiles from OMI cloudy observations for the year 2006 using the cloud slicing method on six pressure levels centered about 280, 380, 500, 620, 720 and 820 hPa. A comparison between OMI and the TM4 model tropospheric NO2 profiles reveals striking overall similarities, which confer great...

journal article 2015

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MAX-DOAS observations of aerosols, formaldehyde and nitrogen dioxide in the Beijing area: Comparison of two profile retrieval approaches

Vlemmix, T. (author), Hendrick, F. (author), Pinardi, G. (author), De Smedt, I. (author), Fayt, C. (author), Hermans, C. (author), Piters, A. (author), Wang, P. (author), Levelt, P.F. (author), Van Roozendael, M. (author)

A 4-year data set of MAX-DOAS observations in the Beijing area (2008–2012) is analysed with a focus on NO2, HCHO and aerosols. Two very different retrieval methods are applied. Method A describes the tropospheric profile with 13 layers and makes use of the optimal estimation method. Method B uses 2–4 parameters to describe the tropospheric...

journal article 2015

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Towards the retrieval of tropospheric ozone with the ozone monitoring instrument (OMI)

Mielonen, T. (author), De Haan, J.F. (author), Van Peet, J.C.A. (author), Eremenko, M. (author), Veefkind, J.P. (author)

We have assessed the sensitivity of the operational Ozone Monitoring Instrument (OMI) ozone profile retrieval algorithm to a number of a priori and radiative transfer assumptions. We studied the effect of stray light correction, surface albedo assumptions and a priori ozone profiles on the retrieved ozone profile. Then, we studied how to modify...

journal article 2015

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Spatial evapotranspiration, rainfall and land use data in water accounting. Part 1: Review of the accuracy of the remote sensing data

Karimi, P. (author), Bastiaanssen, W.G.M. (author)

The scarcity of water encourages scientists to develop new analytical tools to enhance water resource management. Water accounting and distributed hydrological models are examples of such tools. Water accounting needs accurate input data for adequate descriptions of water distribution and water depletion in river basins. Ground-based...

journal article 2015

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Spatial evapotranspiration, rainfall and land use data in water accounting. Part 2: Reliability of water accounting results for policy decisions in the Awash basin

Karimi, P. (author), Bastiaanssen, W.G.M. (author), Sood, A. (author), Hoogeveen, J. (author), Peiser, L. (author), Bastidas Obando, E. (author), Dost, R. (author)

Water Accounting Plus (WAC) is a framework that summarizes complex hydrological processes and water management issues in river basins. The framework is designed to use satellite-based measurements of land and water variables and processes as input data. A general concern associated with the use of satellite measurements is their accuracy. This...

journal article 2015

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Revised predictive equations for salt intrusion modelling in estuaries (discussion)

Isabella Anak Gisen, J. (author), Savenije, H.H.G. (author), Nijzink, R.C. (author)

For one-dimensional salt intrusion models to be predictive, we need predictive equations to link model parameters to observable hydraulic and geometric variables. The one-dimensional model of Savenije (1993b) made use of predictive equation for the Van der Burgh coefficient K and the dispersion at the seaward boundary D0. Here we have improved...

journal article 2015

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Fiber optic distributed temperature sensing for the determination of air temperature

De Jong, S.A.P. (author), Slingerland, J.D. (author), Van de Giesen, N.C. (author)

This paper describes a method to correct for the effect of solar radiation in atmospheric distributed temperature sensing (DTS) applications. By using two cables with different diameters, one can determine what temperature a zero diameter cable would have. Such a virtual cable would not be affected by solar heating and would take on the...

journal article 2015

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A depolarisation lidar-based method for the determination of liquid-cloud microphysical properties

Donovan, D.P. (author), Klein Baltink, H. (author), Henzing, J.S. (author), De Roode, S.R. (author), Siebesma, A.P. (author)

The fact that polarisation lidars measure a depolarisation signal in liquid clouds due to the occurrence of multiple scattering is well known. The degree of measured depolarisation depends on the lidar characteristics (e.g. wavelength and receiver field of view) as well as the cloud macrophysical (e.g. cloud-base altitude) and microphysical (e.g...

journal article 2015

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Evaluating data quality collected by volunteers for first-level inspection of hydraulic structures in mountain catchments

Cortes Arevalo, V.J. (author), Charriere, M.K.M. (author), Bossi, G. (author), Frigerio, S. (author), Schenato, L. (author), Bogaard, T.A. (author), Bianchizza, C. (author), Pasuto, A. (author), Sterlacchini, S. (author)

Volunteers have been trained to perform first-level inspections of hydraulic structures within campaigns promoted by civil protection of Friuli Venezia Giulia (Italy). Two inspection forms and a learning session were prepared to standardize data collection on the functional status of bridges and check dams. In all, 11 technicians and 25...

journal article 2014

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Decision-tree analysis of factors influencing rainfall-related building structure and content damage

Spekkers, M.H. (author), Kok, M. (author), Clemens, F.H.L.R. (author), Ten Veldhuis, J.A.E. (author)

journal article 2014

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Identifying water mass depletion in Northern Iraq observed by GRACE

Mulder, G. (author), Olsthoorn, T.N. (author), Al-manmi, D.A.M.A. (author), Schrama, E.J.O. (author), Smidt, E.H. (author)

Observations acquired by Gravity Recovery And Climate Experiment (GRACE) mission indicate a mass loss of 31 ± 3 km3 or 130 ± 14 mm in Northern Iraq between 2007 and 2009. This data is used as an independent validation of a hydrologic model of the region including lake mass variations. We developed a rainfall–runoff model for five tributaries of...

journal article 2014

document

A depolarisation lidar based method for the determination of liquid-cloud microphysical properties

Donovan, D.P. (author), Klein Baltink, H. (author), Henzing, J.S. (author), De Roode, S.R. (author), Siebesma, A.P. (author)

The fact that polarisation lidars measure a depolarisation signal in liquid clouds due to the occurrence of multiple-scattering is well-known. The degree of measured depolarisation depends on the lidar characteristics (e.g. wavelength and receiver field-of-view) as well as the cloud macrophysical (e.g. liquid water content) and microphysical (e...

journal article 2014

document

MAX-DOAS observations of aerosols, formaldehyde and nitrogen dioxide in the Beijing area: Comparison of two profile retrieval approaches

Vlemmix, T. (author), Hendrick, F. (author), Pinardi, G. (author), De Smedt, I. (author), Fayt, C. (author), Hermans, C. (author), Piters, A. (author), Wang, P. (author), Levelt, P.F. (author), Van Roozendael, M. (author)

A four year data set of MAX-DOAS observations in the Beijing area (2008–2012) is analysed with a focus on NO2, HCHO, and aerosols. Two very different retrieval methods are applied. Method A describes the tropospheric profile with 13 layers and makes use of the optimal estimation method. Method B uses 2–4 parameters to describe the tropospheric...

journal article 2014