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  • 1
    Online-Ressource
    Online-Ressource
    HAPPI-DE - Klima- und Klimafolgenprojektionen bei 1.5°C gegenüber 2°C Erwärmung im Rahmen der HAPPI-Initiative : Teilprojekt: Regionale HAPPI-Simulationen (2019)
    Hamburg : [Climate Service Center Germany (GERICS)]
    Details Verfügbarkeit
    Schlagwort(e): Forschungsbericht ; Klimaänderung ; Klima ; Modell
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (12 Seiten, 1,18 MB) , Diagramme, Karten
    URL: https://doi.org/10.2314/KXP:1686542887
    DOI: 10.2314/KXP:1686542887
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 01LS1613C , Verbundnummer 01177045 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 2
    Online-Ressource
    Online-Ressource
    REDCLIP : Schlussbericht (2016)
    Hamburg : MPI-M Hamburg
    Details Verfügbarkeit
    Schlagwort(e): Forschungsbericht ; Klima ; Prognose ; Modell
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (19 Seiten, 1,64 MB) , Illustrationen, Diagramme, Karten
    URL: http://epub.sub.uni-hamburg.de/epub/volltexte/2017/66270/
    URL: https://edocs.tib.eu/files/e01fb17/884254445.pdf
    URL: https://doi.org/10.2314/GBV:884254445
    DOI: 10.2314/GBV:884254445
    Sprache: Deutsch
    Anmerkung: Autor dem Berichtsblatt der Druck-Ausgabe entnommen , Förderkennzeichen BMBF 01LP1156A , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 3
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    Regional climate downscaling over Europe: perspectives from the EURO-CORDEX community (2020)
    Springer Berlin Heidelberg
    Details
    Publikationsdatum: 2023-06-21
    Beschreibung: The European CORDEX (EURO-CORDEX) initiative is a large voluntary effort that seeks to advance regional climate and Earth system science in Europe. As part of the World Climate Research Programme (WCRP) - Coordinated Regional Downscaling Experiment (CORDEX), it shares the broader goals of providing a model evaluation and climate projection framework and improving communication with both the General Circulation Model (GCM) and climate data user communities. EURO-CORDEX oversees the design and coordination of ongoing ensembles of regional climate projections of unprecedented size and resolution (0.11° EUR-11 and 0.44° EUR-44 domains). Additionally, the inclusion of empirical-statistical downscaling allows investigation of much larger multi-model ensembles. These complementary approaches provide a foundation for scientific studies within the climate research community and others. The value of the EURO-CORDEX ensemble is shown via numerous peer-reviewed studies and its use in the development of climate services. Evaluations of the EUR-44 and EUR-11 ensembles also show the benefits of higher resolution. However, significant challenges remain. To further advance scientific understanding, two flagship pilot studies (FPS) were initiated. The first investigates local-regional phenomena at convection-permitting scales over central Europe and the Mediterranean in collaboration with the Med-CORDEX community. The second investigates the impacts of land cover changes on European climate across spatial and temporal scales. Over the coming years, the EURO-CORDEX community looks forward to closer collaboration with other communities, new advances, supporting international initiatives such as the IPCC reports, and continuing to provide the basis for research on regional climate impacts and adaptation in Europe.
    Schlagwort(e): ddc:551.6 ; EURO-CORDEX ; CORDEX ; Climate change ; Regional climate models ; Regional climate modelling
    Sprache: Englisch
    Materialart: doc-type:article
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    CITATION GEO-LEO
  • 4
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    Impact of ocean-atmosphere coupling on regional climate: the Iberian Peninsula case (2020)
    SPRINGER
    In:  EPIC3Climate Dynamics, SPRINGER, 54(9-10), pp. 4441-4467, ISSN: 0930-7575
    Details
    Publikationsdatum: 2020-06-15
    Beschreibung: Regional models used for downscaling the European climate usually include a relatively small area of the Atlantic Ocean and are uncoupled, with the SST used as lower boundary conditions much coarser than the mesh of the regional atmospheric model. Concerns thus arise about the proper representation of the oceanic influence and the role of air-sea coupling in such experiments. A complex orography and the exposure to different air and ocean masses make the Iberian Peninsula (IP) an ideal test case for exploring the impact of including explicitly the North Atlantic in the regional domain and the added value that coupling brings to regional climate modeling. To this end, the regionally-coupled model ROM and its atmospheric component, the regional atmospheric model REMO are used in a set of coupled and uncoupled experiments forced by the ERA-Interim reanalysis and by the global climate model MPI-ESM. The atmospheric domain is the same in all simulations and includes the North Atlantic and the ocean component is global and eddy permitting. Results show that the impact of air-sea coupling on the IP winter biases can be traced back to the features of the simulated North Atlantic Ocean circulation. In summer, it is the air-sea interactions in the Mediterranean that exert the largest influence on the regional biases. Despite improvements introduced by the eddy-permitting ocean, it is suggested that a higher resolution could be needed for a correct simulation of the features of the large-scale atmospheric circulation that impact the climate of the IP.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
    Format: application/pdf
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    ARTIKEL (OA)
  • 5
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    Dynamical downscaling of historical climate over CORDEX Central America domain with a regionally coupled atmosphere–ocean model (2018)
    SPRINGER
    In:  EPIC3Climate Dynamics, SPRINGER, ISSN: 0930-7575
    Details
    Publikationsdatum: 2018-08-27
    Beschreibung: The climate in Mexico and Central America is influenced by the Pacific and the Atlantic oceanic basins and atmospheric conditions over continental North and South America. These factors and important ocean–atmosphere coupled processes make the region’s climate a great challenge for global and regional climate modeling. We explore the benefits that coupled regional climate models may introduce in the representation of the regional climate with a set of coupled and uncoupled simulations forced by reanalysis and global model data. Uncoupled simulations tend to stay close to the large-scale patterns of the driving fields, particularly over the ocean, while over land they are modified by the regional atmospheric model physics and the improved orography representation. The regional coupled model adds to the reanalysis forcing the air–sea interaction, which is also better resolved than in the global model. Simulated fields are modified over the ocean, improving the representation of the key regional structures such as the Intertropical Convergence Zone and the Caribbean Low Level Jet. Higher resolution leads to improvements over land and in regions of intense air–sea interaction, e.g., off the coast of California. The coupled downscaling improves the representation of the Mid Summer Drought and the meridional rainfall distribution in southernmost Central America. Over the regions of humid climate, the coupling corrects the wet bias of the uncoupled runs and alleviates the dry bias of the driving model, yielding a rainfall seasonal cycle similar to that in the reanalysis-driven experiments.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
    Format: application/pdf
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    ARTIKEL (OA)
  • 6
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    Weather extremes over Europe under 1.5 °C and 2.0 °C global warming from HAPPI regional climate ensemble simulations (2020)
    Copernicus Publications (EGU)
    In:  (Submitted) Earth System Dynamics Discussions .
    Details
    Publikationsdatum: 2020-10-14
    Beschreibung: This paper presents a novel data set of regional climate model simulations over Europe that significantly improves our ability to detect changes in weather extremes under low and moderate levels of global warming. The data set provides a unique and physically consistent data set, as it is derived from a large ensemble of regional climate model simulations. These simulations were driven by two global climate models from the international HAPPI consortium. The set consists of 100 × 10-year simulations and 25 × 10-year simulations, respectively. These large ensembles allow for regional climate change and weather extremes to be investigated with an improved signal-to-noise ratio compared to previous climate simulations. The changes in four climate indices for temperature targets of 1.5 °C and 2.0 °C global warming are quantified: number of days per year with daily mean near-surface apparent temperature of 〉 28 °C (ATG28); the yearly maximum 5-day sum of precipitation (RX5day); the daily precipitation intensity of the 50-yr return period (RI50yr); and the annual Consecutive Dry Days (CDD). This work shows that even for a small signal in projected global mean temperature, changes of extreme temperature and precipitation indices can be robustly estimated. For temperature related indices changes in percentiles can also be estimated with high confidence. Such data can form the basis for tailor-made climate information that can aid adaptive measures at a policy-relevant scales, indicating potential impacts at low levels of global warming at steps of 0.5 °C.
    Materialart: Article , NonPeerReviewed
    Format: text
    DOI: 10.5194/esd-2020-4
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    OceanRep: Artikel in einer Fachzeitschrift - nicht begutachtet
  • 7
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    Development of Wet-Bulb-Temperatures in Germany with special regard to conventional thermal Power Plants using Wet Cooling Towers (2011)
    Schweizerbart
    Details
    Publikationsdatum: 2011-12-21
    Print ISSN: 0941-2948
    Digitale ISSN: 1610-1227
    Thema: Geographie , Physik
    Publiziert von Schweizerbart
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