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Robust 4D climate-optimal aircraft trajectory planning under weather-induced uncertainties: Free-routing airspace

Simorgh, A. (author), Soler, Manuel (author), Dietmüller, Simone (author), Matthes, Sigrun (author), Yamashita, Hiroshi (author), Castino, F. (author), Yin, F. (author)

The non-CO₂ climate impact of aviation strongly relies on the atmospheric conditions at the time and location of emissions. Therefore, it is possible to mitigate their associated climate impact by planning trajectories to re-route airspace areas with significant climate effects. Identifying such climate-sensitive regions requires...

journal article 2024

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Plant–atmosphere heat exchange during wind machine operation for frost protection

Boekee, J. (author), Dai, Y. (author), Schilperoort, B. (author), van de Wiel, B.J.H. (author), ten Veldhuis, Marie-claire (author)

To mitigate spring frost damage, fruit farmers use wind machines to mix warm overlying air down to the vegetation. Up to this point, studies on wind machine efficiency have focused on air temperatures. The temperature of different plant organs during operation remains unknown, while critical for the actual degree of frost damage. With...

journal article 2023

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A generic approach to parameterize the turbulent energy of single-epoch atmospheric delays from InSAR time-series

Mulder, G. (author), van Leijen, F.J. (author), Hanssen, R.F. (author)

The observed phase in time series of interferometric synthetic aperture radar (InSAR) products is a superposition of various components. Differential topography, line-of-sight displacements, and differential atmospheric delays are the main contributions and need to be disentangled to derive accurate digital elevation model (DEM), deformation,...

journal article 2023

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Assessment of meteorological parameters on air pollution variability over Delhi

Garsa, Kalpana (author), Khan, Abul Amir (author), Jindal, P. (author), Middey, Anirban (author), Luqman, Nadeem (author), Mohanty, Hitankshi (author), Tiwari, Shubhansh (author)

In this study, the relationships between meteorological parameters (relative humidity, wind speed, temperature, planetary boundary layer, and rainfall) and air pollutants (particulate matter and gaseous pollutants) have been evaluated during a 3-year period from 2019 to 2021. Diffusion and dispersion of air contaminants were significantly...

journal article 2023

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Error Features in Predicting Typhoon Winds: A Case Study Comparing Simulated and Measured Data

Peng, Shaoyuan (author), Liu, Y. (author), Li, Renge (author), Wei, Ying (author), Chan, Pak Wai (author), Li, Sunwei (author)

Simulating a typhoon’s wind field via mesoscale models is important in terms of providing not only the guidelines for urban planning and onshore/offshore constructions, but also the provision of insight into the dynamics and thermodynamics of tropical cyclone systems. Therefore, the errors that are contained in simulation results were...

journal article 2022

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PV Module Energy Rating Standard IEC 61853-3 Intercomparison and Best Practice Guidelines for Implementation and Validation

Vogt, M.R. (author), Riechelmann, Stefan (author), Gracia-Amillo, Ana Maria (author), Driesse, Anton (author), Kokka, Alexander (author), Maham, Kinza (author), Karha, Petri (author), Kenny, Robert (author), Schinke, Carsten (author)

The IEC 61853 standard series aims to provide a standardized measure for photovoltaic (PV) module energy rating, namely the Climate Specific Energy Rating(CSER). For this purpose, it defines procedures for the experimental determination of input data and algorithms for calculating the CSER. However, some steps leave room for interpretation...

journal article 2022

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Estimating Single-Epoch Integrated Atmospheric Refractivity from InSAR for Assimilation in Numerical Weather Models

Mulder, G. (author), van Leijen, F.J. (author), Barkmeijer, Jan (author), De Haan, Siebren (author), Hanssen, R.F. (author)

Numerical weather prediction (NWP) models are used to predict the weather based on current observations in combination with physical and mathematical models. Yet, they are limited by the spatial density and the accuracy of the available observations. Satellite radar interferometry (InSAR) is known to be extremely sensitive to the 3D...

journal article 2022

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Case Study for Testing the Validity of NOx-Ozone Algorithmic Climate Change Functions for Optimising Flight Trajectories

Rao, P.V. (author), Yin, F. (author), Grewe, V. (author), Yamashita, Hiroshi (author), Jöckel, Patrick (author), Matthes, Sigrun (author), Mertens, Mariano (author), Frömming, Christine (author)

One possibility to reduce the climate impact of aviation is the avoidance of climate-sensitive regions, which is synonymous with climate-optimised flight planning. Those regions can be identified by algorithmic Climate Change Functions (aCCFs) for nitrogen oxides (NOx), water vapour (H2O) as well as contrail cirrus, which provide a measure of...

journal article 2022

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Fostering Ambidextrous Innovation Strategies in Large Infrastructure Projects: A Team Heterogeneity Perspective

Zhang, Xinyue (author), Le, Yun (author), Liu, Y. (author), Chen, Xiaoyan (author)

In emerging economies, infrastructure projects are in full swing. There is a wealth of replicable experience for exploitation. Simultaneously, more technologies and methodologies require further exploration. This makes fostering ambidextrous innovation strategies (i.e., the tradeoff between exploitative and exploratory innovation strategies) a...

journal article 2021

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Radio Frequency Interference Characterization and Mitigation for Polarimetric Weather Radar: A Study Case

Yin, Jiapeng (author), Hoogeboom, P. (author), Unal, C.M.H. (author), Russchenberg, H.W.J. (author)

Radio frequency interference (RFI) has become a growing concern for weather radar, distorting radar variable estimation. By simultaneously or alternately transmitting the horizontal and vertical polarized waves, polarimetric weather radar can be referred to as SHV radar or AHV radar. The SHV radar can mimic the AHV radar by discarding either...

journal article 2021

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Soil moisture information can improve shallow landslide forecasting using the hydrometeorological threshold approach

Marino, Pasquale (author), Peres, David J. (author), Cancelliere, Antonino (author), Greco, Roberto (author), Bogaard, T.A. (author)

Empirical thresholds indicating the meteorological conditions leading to shallow landslide triggering are one of the most important components of landslide early warning systems (LEWS). Thresholds have been determined for many parts of the globe and present significant margins of improvement, especially for the high number of false alarms...

journal article 2020

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Wind effects on the water age in a large shallow lake

Liu, S. (author), Ye, Qinghua (author), Wu, Shiqiang (author), Stive, M.J.F. (author)

As the third largest fresh water lake in China, Taihu Lake is suffering from serious eutrophication, where nutrient loading from tributary and surrounding river networks is one of the main contributors. In this study, water age is used to investigate the impacts of tributary discharge and wind influence on nutrient status in Taihu Lake,...

journal article 2020

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Algorithmic climate change functions for the use in eco-efficient flight planning

van Manen, J. (author), Grewe, V. (author)

Aviation contributes significantly to anthropogenic climate change, and one promising possibility for mitigation is eco-efficient flight planning by avoiding climate sensitive regions with only small changes in the aircraft trajectories. Climate sensitive regions result from strong spatial variation of the global climate impact of local non-CO2...

journal article 2019

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Potential of cost-efficient single frequency GNSS receivers for water vapor monitoring

Krietemeyer, A. (author), ten Veldhuis, Marie-claire (author), van der Marel, H. (author), Realini, Eugenio (author), van de Giesen, N.C. (author)

Dual-frequency Global Navigation Satellite Systems (GNSSs) enable the estimation of Zenith Tropospheric Delay (ZTD) which can be converted to PrecipitableWater Vapor (PWV). The density of existing GNSS monitoring networks is insufficient to capture small-scale water vapor variations that are especially important for extreme weather...

journal article 2018

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Uchimizu: A Cool(ing) Tradition to Locally Decrease Air Temperature

Solcerova, A. (author), van Emmerik, T.H.M. (author), Hilgersom, K.P. (author), van de Ven, F.H.M. (author), van de Giesen, N.C. (author)

The urban heat island effect was first described 200 years ago, but the development of ways to mitigate heat in urban areas reaches much further into the past. Uchimizu is a 17th century Japanese tradition, in which water is sprinkled around houses to cool the ground surface and air by evaporation. Unfortunately, the number of published studies...

journal article 2018

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Parameterization of canopy resistance for modeling the energy partitioning of a paddy rice field

Yan, H. (author), Zhang, C. (author), Hiroki, Oue (author)

Models for predicting hourly canopy resistance (r_c) and latent heat flux (LET) based on the Penman–Monteith (PM) and bulk transfer methods are presented. The micrometeorological data and LET were observed during paddy rice-growing seasons in 2010 in Japan. One approach to model r_c was using an aerodynamic resistance (r...

journal article 2018

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Probabilistic energy management for building climate comfort in smart thermal grids with seasonal storage systems

Rostampour, Vahab (author), Keviczky, T. (author)

This paper presents an energy management framework for building climate comfort (BCC) systems interconnected in a grid via aquifer thermal energy storage (ATES) systems in the presence of two types of uncertainty (private and common). ATES can be used either as a heat source (hot well) or sink (cold well) depending on the season. We consider...

journal article 2018

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Radar Target and Moving Clutter Separation Based on the Low-Rank Matrix Optimization

Yin, J. (author), Unal, C.M.H. (author), Schleiss, M.A. (author), Russchenberg, H.W.J. (author)

A novel algorithm is put forward to separate radar target and moving clutter based on a combination of the low-rank matrix optimization (LRMO) and the decision tree. Similar to the moving object detection in the field of automated video analysis, the proposed separation method, which is carried out in the range-Doppler domain, makes use of...

journal article 2018

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Observed soil moisture–precipitation feedback in Illinois: A systematic analysis over different scales

Duerinck, H.M. (author), van der Ent, R.J. (author), van de Giesen, N.C. (author), Schoups, G.H.W. (author), Babovic, V (author), Yeh, P.J.F. (author)

The lack of understanding on the soil moisture–precipitation feedback mechanisms remains a large source of uncertainty for land–atmosphere coupled models. Previous observation-based studies on the soil moisture–precipitation feedback in Illinois have shown contradictory results. This paper extends earlier research by providing a more holistic...

journal article 2016

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Stochastic convection parameterization with Markov Chains in an intermediate-complexity GCM

Dorrestijn, J. (author), Crommelin, D.T. (author), Siebesma, A.P. (author), Jonker, H.J.J. (author), Selten, F. (author)

Conditional Markov chain (CMC) models have proven to be promising building blocks for stochastic convection parameterizations. In this paper, it is demonstrated how two different CMC models can be used as mass flux closures in convection parameterizations. More specifically, the CMC models provide a stochastic estimate of the convective area...

journal article 2016