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Belmonte Rivas, M. (author), Veefkind, P. (author), Eskes, H. (author), Levelt, P. (author)We derive annual and seasonal global climatologies of tropospheric NO2 profiles from OMI cloudy observations for the year 2006 using the cloud-slicing method on six pressure levels centered at about 280, 380, 500, 620, 720 and 820 hPa. A comparison between OMI and the TM4 model tropospheric NO2 profiles reveals striking overall similarities,...journal article 2015
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Sirmacek, B. (author), Lindenbergh, R.C. (author)Recent technological developments help us to acquire high quality 3D measurements of our urban environment. However, these measurements, which come as point clouds or Digital Surface Models (DSM), do not directly give 3D geometrical models of buildings. In addition to that, they are not suitable for fast 3D rendering. Therefore, detection and 3D...journal article 2015
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Sarna, K. (author), Russchenberg, H.W.J. (author)A method for continuous observation of aerosol–cloud interactions with ground-based remote sensing instruments is presented. The main goal of this method is to enable the monitoring of cloud microphysical changes due to the changing aerosol concentration. We use high resolution measurements from lidar, radar and radiometer which allow to collect...journal article 2015
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Perrin, V.E. (author), Jonker, H.J.J. (author)The distribution of relative velocities between particles provides invaluable information on the rates and characteristics of particle collisions. We show that the theoretical model of Gustavsson and Mehlig [K. Gustavsson and B. Mehlig, J. Turbul. 15, 34 (2014)], within its anticipated limits of validity, can predict the joint probability...journal article 2015
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Zhang, B. (author), Teunissen, P.J.G. (author)Care should be taken to minimize adverse impact of receiver differential code biases (DCBs) on global navigation satellite system (GNSS)-derived ionospheric parameters. It is therefore of importance to ascertain the intrinsic characteristics of receiver DCBs, preferably in the context of new-generation GNSS. In this contribution, we present a...journal article 2015
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Sun, Y. (author), Ditmar, P. (author), Riva, R. (author)A new methodology is proposed to estimate changes in the Earth’s dynamic oblateness (?J2 or equivalently, ?5??C20) on a monthly basis. The algorithm uses monthly Gravity Recovery and Climate Experiment (GRACE) gravity solutions, an ocean bottom pressure model and a glacial isostatic adjustment (GIA) model. The resulting time series agree...journal article 2015
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Ding, J. (author), Van der A, R.J. (author), Mijling, B. (author), Levelt, P.F. (author), Hao, N. (author)The Nanjing Government applied temporary environmental regulations to guarantee good air quality during the Youth Olympic Games (YOG) in 2014. We study the effect of those regulations by applying the emission estimate algorithm DECSO (Daily Emission estimates Constrained by Satellite Observations) to measurements of the Ozone Monitoring...journal article 2015
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Lenaerts, J.T.M. (author), Le Bars, D. (author), Van Kampenhout, L. (author), Vizcaino, M. (author), Enderlin, E.M. (author), Van den Broeke, M.R. (author)Here we present a long-term (1850–2200) best estimate of Greenland ice sheet (GrIS) freshwater runoff that improves spatial detail of runoff locations and temporal resolution. Ice discharge is taken from observations since 2000 and assumed constant in time. Surface meltwater runoff is retrieved from regional climate model output for the recent...journal article 2015
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Chimot, J.J. (author), Vlemmix, T. (author), Veefkind, J.P. (author), De Haan, J.F. (author), Levelt, P.F. (author)The Ozone Monitoring Instrument (OMI) instrument has provided daily global measurements of tropospheric NO2 for more than a decade. Numerous studies have drawn attention to the complexities related to measurements of tropospheric NO2 in the presence of aerosols. Fine particles affect the OMI spectral measurements and the length of the average...journal article 2015
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Postseismic GRACE and GPS observations indicate a rheology contrast above and below the Sumatra slabBroerse, D.B.T. (author), Riva, R.E.M. (author), Simons, W.J.F. (author), Govers, R. (author), Vermeersen, L.L.A. (author)More than 7 years of observations of postseismic relaxation after the 2004 Sumatra-Andaman earthquake provide an improving view on the deformation in the wide vicinity of the 2004 rupture. We include both Gravity Recovery and Climate Experiment (GRACE) gravity field data that show a large postseismic signal over the rupture area and GPS...journal article 2015
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Velsink, H. (author)A new approach to determine a multi-point deformation of the earth’s surface or objects upon it, represented by point fields measured in two epochs, is presented. The problem of determining, which points have been deformed, is not approached by testing point-by-point, but by formulating alternative hypotheses that test if one, two or more...journal article 2015
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Van der Dussen, J.J. (author), De Roode, S.R. (author), Siebesma, A.P. (author)Some climate modeling results suggest that the Hadley circulation might weaken in a future climate, causing a subsequent reduction in the large-scale subsidence velocity in the subtropics. In this study we analyze the cloud liquid water path (LWP) budget from large-eddy simulation (LES) results of three idealized stratocumulus transition cases...journal article 2015
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Mousivand, A. (author), Verhoef, W. (author), Menenti, M. (author), Gorte, B.G.H. (author)Topography affects the fraction of direct and diffuse radiation received on a pixel and changes the sun–target–sensor geometry, resulting in variations in the observed radiance. Retrieval of surface–atmosphere properties from top of atmosphere radiance may need to account for topographic effects. This study investigates how such effects can be...journal article 2015
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Li, L. (author), Li, Z. (author), Yuan, H. (author), Wang, L. (author), Yanqing, H. (author)The combination of multiple global navigation satellite systems (GNSSs) is able to improve the accuracy and reliability, which is beneficial for navigation in safety–critical applications. Due to the relatively low accuracy of pseudorange observations, the single-epoch GNSS real-time kinematic (RTK) using phase observations can be utilized to...journal article 2015
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Grinsted, A. (author), Jevrejeva, S. (author), Riva, R.E.M. (author), Dahl-Jensen, D. (author)Sea level rise poses a significant threat to coastal communities, infrastructure, and ecosystems. Sea level rise is not uniform globally but is affected by a range of regional factors. In this study, we calculate regional projections of 21st century sea level rise in northern Europe, focusing on the British Isles, the Baltic Sea, and the North...journal article 2015
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Ochoa-Rodriguez, S. (author), Wang, L.P. (author), Gires, A. (author), Pina, R.D. (author), Reinoso-Rondinel, R. (author), Bruni, G. (author), Ichiba, A. (author), Gaitan, S. (author), Cristiano, E. (author), Van Assel, J. (author), Kroll, S. (author), Murla-Tuyls, D. (author), Tisserand, B. (author), Schertzer, D. (author), Tchiguirinskaia, I. (author), Onof, C. (author), Willems, P. (author), Ten Veldhuis, M.C. (author)Urban catchments are typically characterised by high spatial variability and fast runoff processes resulting in short response times. Hydrological analysis of such catchments requires high resolution precipitation and catchment information to properly represent catchment response. This study investigated the impact of rainfall input resolution...journal article 2015
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Hwang, P.A. (author), Fois, F. (author)Ocean surface roughness and wave breaking are the two main contributors of radar backscattering from the ocean surface. The relative weightings of the two contributions vary with the microwave polarization: the VV (vertical transmit vertical receive) is dominated by the Bragg resonance scattering mechanism, and the HH (horizontal transmit...journal article 2015
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Vizcaino, M. (author), Mikolajewicz, U. (author), Ziemen, F. (author), Rodehacke, C.B. (author), Greve, R. (author), Van den Broeke, M.R. (author)Recent observations indicate a high sensitivity of the Greenland Ice Sheet (GrIS) to climate change. We examine the coupling between the GrIS surface mass balance, elevation, and dynamical flow with one of the few coupled GrIS and atmosphere-ocean general circulation models. Bidirectional coupling from the early Holocene reveals a growing...journal article 2015
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Van der Dussen, J.J. (author), De Roode, S.R. (author), Dal Gesso, S. (author), Siebesma, A.P. (author)Twenty-five large-eddy simulations are performed to study how free tropospheric thermodynamic conditions control equilibrium state solutions of stratocumulus-topped marine boundary layers. In particular, we systematically vary the lower tropospheric stability (LTS) and a similar measure for the bulk humidity difference between the 700 hPa level...journal article 2015
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Dal Gesso, S. (author), Van der Dussen, J.J. (author), Siebesma, A.P. (author), De Roode, S.R. (author), Boutle, I.A. (author), Kamae, Y. (author), Roehrig, R. (author), Vial, J. (author)Six Single-Column Model (SCM) versions of climate models are evaluated on the basis of their representation of the dependence of the stratocumulus-topped boundary layer regime on the free tropospheric thermodynamic conditions. The study includes two idealized experiments corresponding to the present-day and future climate conditions in order to...journal article 2015