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Your search keyword '"van Meijgaard, Erik"' showing total 18 results
Start Over Author "van Meijgaard, Erik" Publisher american meteorological society
18 results on '"van Meijgaard, Erik"'

1. 14. ATTRIBUTION OF WINTERTIME ANTICYCLONIC STAGNATION CONTRIBUTING TO AIR POLLUTION IN WESTERN EUROPE: Climate simulations suggest a potential increase in frequency of stagnant wintertime conditions that prevailed over northwestern Europe in December 2016: it is significant in one multimodel ensemble but not in two single-model ensembles

Author

Vautard, Robert, Colette, Augustin, Van Meijgaard, Erik, Meleux, Frederik, Van Oldenborgh, Geert Jan, Otto, Friederike, Tobin, Isabelle, and Yiou, Pascal

Subjects
Western Europe -- Environmental aspects, Winter -- Environmental aspects, High pressure systems (Meteorology) -- Environmental aspects, Air pollution -- Models -- Measurement, Business, Earth sciences
Abstract

Introduction. In December 2016, western European weather was dominated by persistent anticyclonic conditions (Fig. 14.1a) leading to dry and calm weather. At this time of year, solar radiation does not [...]

Published
2018
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2. The Worldwide C3S CORDEX Grand Ensemble: A Major Contribution to Assess Regional Climate Change in the IPCC AR6 Atlas

Author

Diez-Sierra, Javier, primary, Iturbide, Maialen, additional, Gutiérrez, José M., additional, Fernández, Jesús, additional, Milovac, Josipa, additional, Cofiño, Antonio S., additional, Cimadevilla, Ezequiel, additional, Nikulin, Grigory, additional, Levavasseur, Guillaume, additional, Kjellström, Erik, additional, Bülow, Katharina, additional, Horányi, András, additional, Brookshaw, Anca, additional, García-Díez, Markel, additional, Pérez, Antonio, additional, Baño-Medina, Jorge, additional, Ahrens, Bodo, additional, Alias, Antoinette, additional, Ashfaq, Moetasim, additional, Bukovsky, Melissa, additional, Buonomo, Erasmo, additional, Caluwaerts, Steven, additional, Chou, Sin Chan, additional, Christensen, Ole B., additional, Ciarlò, James M., additional, Coppola, Erika, additional, Corre, Lola, additional, Demory, Marie-Estelle, additional, Djurdjevic, Vladimir, additional, Evans, Jason P., additional, Fealy, Rowan, additional, Feldmann, Hendrik, additional, Jacob, Daniela, additional, Jayanarayanan, Sanjay, additional, Katzfey, Jack, additional, Keuler, Klaus, additional, Kittel, Christoph, additional, Kurnaz, Mehmet Levent, additional, Laprise, René, additional, Lionello, Piero, additional, McGinnis, Seth, additional, Mercogliano, Paola, additional, Nabat, Pierre, additional, Önol, Barış, additional, Ozturk, Tugba, additional, Panitz, Hans-Jürgen, additional, Paquin, Dominique, additional, Pieczka, Ildikó, additional, Raffaele, Francesca, additional, Remedio, Armelle Reca, additional, Scinocca, John, additional, Sevault, Florence, additional, Somot, Samuel, additional, Steger, Christian, additional, Tangang, Fredolin, additional, Teichmann, Claas, additional, Termonia, Piet, additional, Thatcher, Marcus, additional, Torma, Csaba, additional, van Meijgaard, Erik, additional, Vautard, Robert, additional, Warrach-Sagi, Kirsten, additional, Winger, Katja, additional, and Zittis, George, additional

Published
2022
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3. Weather forecasting using GPU-based large-eddy simulations

Author

Schalkwijk, Jerome, Jonker, Harmen J.J., Siebesma, A. Pier, and Van Meijgaard, Erik

Subjects
Weather forecasting -- Analysis, Weather -- Analysis, Business, Earth sciences, Delft University of Technology
Abstract

ABSTRACT Since the advent of computers midway through the twentieth century, computational resources have increased exponentially. It is likely they will continue to do so, especially when accounting for recent [...]

Published
2015
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4. The Worldwide C3S CORDEX Grand Ensemble: A Major Contribution to Assess Regional Climate Change in the IPCC AR6 Atlas

Author

Diez-Sierra, Javier, Iturbide, Maialen, Gutiérrez, José M., Fernández, Jesús, Milovac, Josipa, Cofiño, Antonio S., Cimadevilla, Ezequiel, Nikulin, Grigory, Levavasseur, Guillaume, Kjellström, Erik, Bülow, Katharina, Horányi, András, Brookshaw, Anca, García-Díez, Markel, Pérez, Antonio, Baño-Medina, Jorge, Ahrens, Bodo, Alias, Antoinette, Ashfaq, Moetasim, Bukovsky, Melissa, Buonomo, Erasmo, Caluwaerts, Steven, Chou, Sin Chan, Christensen, Ole B., Ciarlò, James M., Coppola, Erika, Corre, Lola, Demory, Marie-Estelle, Djurdjevic, Vladimir, Evans, Jason P., Fealy, Rowan, Feldmann, Hendrik, Jacob, Daniela, Jayanarayanan, Sanjay, Katzfey, Jack, Keuler, Klaus, Kittel, Christoph, Kurnaz, Mehmet Levent, Laprise, René, Lionello, Piero, McGinnis, Seth, Mercogliano, Paola, Nabat, Pierre, Önol, Barış, Ozturk, Tugba, Panitz, Hans-Jürgen, Paquin, Dominique, Pieczka, Ildikó, Raffaele, Francesca, Remedio, Armelle Reca, Scinocca, John, Sevault, Florence, Somot, Samuel, Steger, Christian, Tangang, Fredolin, Teichmann, Claas, Termonia, Piet, Thatcher, Marcus, Torma, Csaba, van Meijgaard, Erik, Vautard, Robert, Warrach-Sagi, Kirsten, Winger, Katja, Zittis, George, Diez-Sierra, Javier, Iturbide, Maialen, Gutiérrez, José M., Fernández, Jesús, Milovac, Josipa, Cofiño, Antonio S., Cimadevilla, Ezequiel, Nikulin, Grigory, Levavasseur, Guillaume, Kjellström, Erik, Bülow, Katharina, Horányi, András, Brookshaw, Anca, García-Díez, Markel, Pérez, Antonio, Baño-Medina, Jorge, Ahrens, Bodo, Alias, Antoinette, Ashfaq, Moetasim, Bukovsky, Melissa, Buonomo, Erasmo, Caluwaerts, Steven, Chou, Sin Chan, Christensen, Ole B., Ciarlò, James M., Coppola, Erika, Corre, Lola, Demory, Marie-Estelle, Djurdjevic, Vladimir, Evans, Jason P., Fealy, Rowan, Feldmann, Hendrik, Jacob, Daniela, Jayanarayanan, Sanjay, Katzfey, Jack, Keuler, Klaus, Kittel, Christoph, Kurnaz, Mehmet Levent, Laprise, René, Lionello, Piero, McGinnis, Seth, Mercogliano, Paola, Nabat, Pierre, Önol, Barış, Ozturk, Tugba, Panitz, Hans-Jürgen, Paquin, Dominique, Pieczka, Ildikó, Raffaele, Francesca, Remedio, Armelle Reca, Scinocca, John, Sevault, Florence, Somot, Samuel, Steger, Christian, Tangang, Fredolin, Teichmann, Claas, Termonia, Piet, Thatcher, Marcus, Torma, Csaba, van Meijgaard, Erik, Vautard, Robert, Warrach-Sagi, Kirsten, Winger, Katja, and Zittis, George

Abstract

The collaboration between the Coordinated Regional Climate Downscaling Experiment (CORDEX) and the Earth System Grid Federation (ESGF) provides open access to an unprecedented ensemble of regional climate model (RCM) simulations, across the 14 CORDEX continental-scale domains, with global coverage. These simulations have been used as a new line of evidence to assess regional climate projections in the latest contribution of the Working Group I (WGI) to the IPCC Sixth Assessment Report (AR6), particularly in the regional chapters and the Atlas. Here, we present the work done in the framework of the Copernicus Climate Change Service (C3S) to assemble a consistent worldwide CORDEX grand ensemble, aligned with the deadlines and activities of IPCC AR6. This work addressed the uneven and heterogeneous availability of CORDEX ESGF data by supporting publication in CORDEX domains with few archived simulations and performing quality control. It also addressed the lack of comprehensive documentation by compiling information from all contributing regional models, allowing for an informed use of data. In addition to presenting the worldwide CORDEX dataset, we assess here its consistency for precipitation and temperature by comparing climate change signals in regions with overlapping CORDEX domains, obtaining overall coincident regional climate change signals. The C3S CORDEX dataset has been used for the assessment of regional climate change in the IPCC AR6 (and for the interactive Atlas) and is available through the Copernicus Climate Data Store (CDS).

Published
2022

7. Temperature and Wind Climate of the Antarctic Peninsula as Simulated by a High-Resolution Regional Atmospheric Climate Model

Author

Sub Dynamics Meteorology, Marine and Atmospheric Research, van Wessem, Jan Melchior, Reijmer, Carleen H., van de Berg, Willem Jan, van den Broeke, Michiel R., Cook, Alison J., van Ulft, Lambertus H., van Meijgaard, Erik, Sub Dynamics Meteorology, Marine and Atmospheric Research, van Wessem, Jan Melchior, Reijmer, Carleen H., van de Berg, Willem Jan, van den Broeke, Michiel R., Cook, Alison J., van Ulft, Lambertus H., and van Meijgaard, Erik

Published
2015

9. Future Changes in European Severe Convection Environments in a Regional Climate Model Ensemble.

Author

Groenemeijer, Pieter, Tijssen, Lars, Púčik, Tomáš, Rädler, Anja T., Nikulin, Grigory, Prein, Andreas F., van Meijgaard, Erik, Fealy, Rowan, Jacob, Daniela, and Teichmann, Claas

Subjects
CLIMATOLOGY, CONVECTION (Meteorology), SCATTER diagrams, VERTICAL wind shear
Abstract

The occurrence of environmental conditions favorable for severe convective storms was assessed in an ensemble of 14 regional climate models covering Europe and the Mediterranean with a horizontal grid spacing of 0.44°. These conditions included the collocated presence of latent instability and strong deep-layer (surface to 500 hPa) wind shear, which is conducive to the severe and well-organized convective storms. The occurrence of precipitation in the models was used as a proxy for convective initiation. Two climate scenarios (RCP4.5 and RCP8.5) were investigated by comparing two future periods (2021-50 and 2071-2100) to a historical period (1971-2000) for each of these scenarios. The ensemble simulates a robust increase (change larger than twice the ensemble sample standard deviation) in the frequency of occurrence of unstable environments (lifted index ≤ −2) across central and south-central Europe in the RCP8.5 scenario in the late twenty-first century. This increase coincides with the increase in lower-tropospheric moisture. Smaller, less robust changes were found until midcentury in the RCP8.5 scenario and in the RCP4.5 scenario. Changes in the frequency of situations with strong (≥15 m s−1) deep-layer shear were found to be small and not robust, except across far northern Europe, where a decrease in shear is projected. By the end of the century, the simultaneous occurrence of latent instability, strong deep-layer shear, and model precipitation is simulated to increase by up to 100% across central and eastern Europe in the RCP8.5 and by 30%-50% in the RCP4.5 scenario. Until midcentury, increases in the 10%-25% range are forecast for most regions. A large intermodel variability is present in the ensemble and is primarily due to the uncertainties in the frequency of the occurrence of unstable environments. [ABSTRACT FROM AUTHOR]

Published
2017
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10. CORRIGENDUM

Author

Lenaerts, Jan T. M., primary, van den Broeke, Michiel R., primary, van Wessem, Jan M., primary, van de Berg, Willem Jan, primary, van Meijgaard, Erik, additional, van Ulft, Lambertus H., additional, and Schaefer, Marius, additional

Published
2014
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12. Precipitation Climatology in an Ensemble of CORDEX-Africa Regional Climate Simulations

Author

Nikulin, Grigory, primary, Jones, Colin, primary, Giorgi, Filippo, primary, Asrar, Ghassem, primary, Büchner, Matthias, primary, Cerezo-Mota, Ruth, primary, Christensen, Ole Bøssing, primary, Déqué, Michel, primary, Fernandez, Jesus, primary, Hänsler, Andreas, primary, van Meijgaard, Erik, primary, Samuelsson, Patrick, primary, Sylla, Mouhamadou Bamba, primary, and Sushama, Laxmi, primary

Published
2012
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