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Title: A review on regional convection-permitting climate modeling: Demonstrations, prospects, and challenges

Regional climate modeling using convection permitting models (CPMs) emerges as a promising framework to provide more reliable climate information on regional to local scales compared to traditionally used large-scale models (LSMs). CPMs do not use convection parameterization schemes, known as a major source of errors and uncertainties, and have more accurate surface and orography elds. The drawback of CPMs is their high demand on computational resources. For this reason, the CPM climate simulations only appeared a decade ago. In this study we aim to provide a common basis for CPM climate simulations by giving a holistic review of the topic. The most important components in CPM, such as physical parameterizations and dynamical formulations are discussed, and an outlook on required future developments and computer architectures that would support the application of CPMs is given. Most importantly, this review presents the consolidated outcome of studies that addressed the added value of CPM climate simulations compared to LSMs. Most improvements are found for processes related to deep convection (e.g., precipitation during summer), for mountainous regions, and for the soil-vegetation-atmosphere interactions. The climate change signals of CPM simulations reveal increases in short and extreme rainfall events and an increased ratio of liquid precipitationmore » at the surface (a decrease of hail) potentially leading to more frequent ash oods. Concluding, CPMs are a very promising tool for future climate research. However, coordinated modeling programs are crucially needed to assess their full potential and support their development.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [5] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [5] ;  [12] ;  [13]
  1. National Center for Atmospheric Research, Boulder, CO (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Météo-France/CNRS, Toulouse (France)
  4. Luxembourg Inst. of Science and Technology (Luxembourg)
  5. Inst. for Atmospheric and Climate Science, Zurich (Switzerland)
  6. Univ. of Bonn (Germany)
  7. Justus-Liebig Universität Gießen, Giessen (Germany)
  8. Univ. of Trier (Germany)
  9. Helmholtz-Zentrum Geesthacht Centre for Materals and Coastal Resaerch, Geesthacht (Germany). Inst. for Coastal Research
  10. Goethe Univ., Frankfurt (Germany)
  11. Research Center Jülich (Germany). Agrosphere (IBG-3)
  12. KU Leuven (Belgium)
  13. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
OSTI Identifier:
1295958
Report Number(s):
PNNL-SA-106077
Journal ID: ISSN 8755-1209; KP1703010
Grant/Contract Number:
AC05-76RL01830; AC02-05CH11231
Type:
Published Article
Journal Name:
Reviews of Geophysics (1985)
Additional Journal Information:
Journal Name: Reviews of Geophysics (1985); Journal Volume: 53; Journal Issue: 2; Journal ID: ISSN 8755-1209
Publisher:
American Geophysical Union (AGU)
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES