A5012550900- Climate variability and models
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Precipitation Measurement and Analysis
- Atmospheric aerosols and clouds
- Fire effects on ecosystems
- Tropical and Extratropical Cyclones Research
- Air Quality and Health Impacts
- Lightning and Electromagnetic Phenomena
- Atmospheric chemistry and aerosols
- Hydrology and Drought Analysis
- demographic modeling and climate adaptation
- Hydrology and Watershed Management Studies
- Atmospheric and Environmental Gas Dynamics
- Geophysics and Gravity Measurements
- Climate change and permafrost
- Urban Heat Island Mitigation
- Wind and Air Flow Studies
- Plant Water Relations and Carbon Dynamics
- Urban Green Space and Health
- Tree-ring climate responses
- Environmental and Agricultural Sciences
- Ecosystem dynamics and resilience
- Iron and Steelmaking Processes
- Integrated Energy Systems Optimization
Centre National de Recherches Météorologiques
2019-2024
Météo-France
2021-2024
Université de Toulouse
2021-2024
Centre National de la Recherche Scientifique
2021-2024
Pintail (Ireland)
2023
Goethe University Frankfurt
2014-2022
KU Leuven
2010-2016
Abstract Here we present the first multi-model ensemble of regional climate simulations at kilometer-scale horizontal grid spacing over a decade long period. A total 23 run with $$\sim $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math> 3 km, driven by ERA-Interim reanalysis, and performed 22 European research groups are analysed. Six different models (RCMs) represented in ensemble. The compared against available high-resolution precipitation...
Abstract Approximately 10 years ago, convection‐permitting regional climate models (CPRCMs) emerged as a promising computationally affordable tool to produce fine resolution (1–4 km) decadal‐long simulations with explicitly resolved deep convection. This explicit representation is expected reduce projection uncertainty related convection parameterizations found in most models. A recent surge CPRCM decadal over larger domains, sometimes covering continents, has led important insights into...
Convection-permitting climate model are promising tools for improved representation of extremes, but the number regions which these models have been evaluated still rather limited to make robust conclusions. In addition, an integrated interpretation near-surface characteristics (typically temperature and precipitation) together with cloud properties is limited. The objective this paper comprehensively evaluate performance a 'state-of-the-art' regional convection-permitting mid-latitude...
The computational cost still remains a limiting factor for performing convection-permitting climate simulations.Choosing model set-up with the lowest without deteriorating performances is, therefore, of relevance before starting any decadal simulations at scale (CPS).In this study three different strategies that aim reducing are evaluated.These (1) excluding graupel in microphysical scheme, (2) nesting steps to downscale from ERA-Interim CPS and (3) domain size.To test these strategies,...
Abstract. This study explores whether climate models with higher spatial resolutions provide accuracy for precipitation simulations and/or different change signals. The outputs from two convection-permitting (ALARO and CCLM) a resolution of 3–4 km are compared those the coarse-scale driving or reanalysis data simulating/projecting daily sub-daily quantiles. Validation historical design statistics derived intensity–duration–frequency (IDF) curves shows better match model results...
Abstract Extreme convective precipitation is expected to increase with global warming. However, the rate of and understanding contributing processes remain highly uncertain. We investigated characteristics rain cells like area, intensity, lifetime as simulated by a convection‐permitting climate model in area Germany under historical (1976–2005) future (end‐of‐century, RCP8.5 scenario) conditions. To this end, tracking algorithm was applied 5‐min output. While number virtually similar...
Abstract Since a decade, convection-permitting regional climate models (CPRCM) have emerged showing promising results, especially in improving the simulation of precipitation extremes. In this article, CPRCM CNRM-AROME developed at Centre National de Recherches Météorologiques (CNRM) since few years is described and evaluated using 2.5-km 19-year long hindcast over large northwestern European domain different observations through an added-value analysis which comparison with its driving...
Abstract. Convection-permitting climate models (CPMs) are becoming increasingly used in change studies. These show greatly improved convective rainfall statistics compared to parameterized-convection regional (RCMs), but they also more reliable a setting? Increases extremes generally considered be caused by increases absolute humidity, primarily following from the Clausius–Clapeyron relation, while influence of relative humidity changes is uncertain and not systematically explored....
This paper evaluates convective precipitation as simulated by the convection-permitting climate model (CPM) Consortium for Small-Scale Modeling in mode (COSMO-CLM) (with 2.8 km grid-spacing) over Germany period 2001–2015. Characteristics of objects like lifetime, area, mean intensity, and total are compared to characteristics observed weather radar. For this purpose, a tracking algorithm was applied with 5-min temporal resolution. The amount is well simulated, small overestimation 2%....
&lt;p&gt;Here we present the first multi-model ensemble of climate simulations at kilometer-scale horizontal resolution over a decade long period. A total 22 simulations, performed by 21 European research groups are analyzed. Six different regional models (RCMs) represented in ensemble. The compared against available high-resolution precipitation observations and coarse (12 km) RCMs with parameterized convection. model respect to mean precipitation, intensity frequency, heavy on...
Abstract. Andean headwater catchments are an important source of freshwater for downstream water users. However, few long-term studies exist on the relative importance climate change and direct anthropogenic perturbations flow regimes in these catchments. In this paper, we assess streamflow based long time series hydrometeorological data (1974–2008) land cover reconstructions (1963–2009) Pangor catchment (282 km2) located tropical Andes. Three main trajectories can be distinguished during...
Abstract Lightning climate change projections show large uncertainties caused by limited empirical knowledge and strong assumptions inherent to coarse-grid modeling. This study addresses the latter issue implementing applying lightning potential index parameterization (LPI) into a fine-grid convection-permitting regional model (CPM). setup takes advantage of explicit representation deep convection in CPMs allows for process-oriented LPI inputs such as vertical velocity within convective...
Abstract Meteorological processes over islands with complex orography could be better simulated by Convection Permitting Regional Climate Models (CP-RCMs) thanks to an improved representation of the orography, land–sea contrasts, combination coastal and orographic effects, explicit deep convection. This paper evaluates ability CP-RCM CNRM-AROME (2.5-km horizontal resolution) simulate relevant meteorological characteristics Mediterranean island Corsica for 2000–2018 period. These hindcast...
Abstract We performed five high resolution (2.8 km) decadal convection permitting scale (CPS) climate simulations over Belgium using the COSMO‐CLM regional model and examined future changes in daily precipitation extremes compared to coarser simulations. The CPS underestimates higher percentiles during both seasons, however, some improvements percentile values are noticed summer season. Analysis of three indicates that modifies signals their forcing non‐CPS summer. During this season,...
Convection-permitting models (CPMs) have proven their usefulness in representing precipitation on a subdaily scale.However, investigations sub-hourly scales are still lacking, even though these the for which showers exhibit most variability.A Lagrangian approach is implemented here to evaluate representation of CPM, using limited-area climate model COSMO-CLM.This consists tracking 5-min fields retrieve different features (e.g., temporal pattern, horizontal speed, lifetime).In total, 312...
It is common practice to use a 30-year period derive climatological values, as recommended by the World Meteorological Organization. However this convention relies on important assumptions, of which validity can be examined deriving uncertainty inherent using limited time-period for values. In study new method, aiming at uncertainty, has been developed with an application precipitation station in Europe (Westdorpe) and one Africa (Gulu). The weather generator framework used produce synthetic...
Abstract. Belgium is one of the areas within Europe experiencing highest levels air pollution. A high-resolution (3 km) modelling experiment employed to provide guidance policymakers about expected quality changes in near future (2026–2035). The regional model AURORA (Air Urban Regions using an Optimal Resolution Approach), driven by output from a climate model, used simulate several 10-year time slices investigate impact climatic and different emission scenarios on near-surface O3...
Abstract Since a decade, convection-permitting regional climate models (CPRCM) have emerged showing promising results, especially in improving the simulation of precipitation extremes. In this article, CPRCM CNRM-AROME developed at Centre National de Recherches Météorologiques (CNRM) since few years is described and evaluated using 2.5-km long 19-year hindcast over large northwestern European domain different observations through an added-value analysis which comparison with its driving...