Temporal and spatial scaling impacts on extreme precipitation

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Bastian Eggert
  • Peter Berg
  • Jan Olaf Haerter
  • Daniela Jacob
  • Christopher Moseley

Convective and stratiform precipitation events have fundamentally different physical causes. Using a radar composite over Germany, this study separates these precipitation types and compares extremes at different spatial and temporal scales, ranging from 1 to 50 km and 5 min to 6 h, respectively. Four main objectives are addressed. First, we investigate extreme precipitation intensities for convective and stratiform precipitation events at different spatial and temporal resolutions to identify type-dependent space and time reduction factors and to analyze regional and seasonal differences over Germany. We find strong differences between the types, with up to 30% higher reduction factors for convective compared to stratiform extremes, exceeding all other observed seasonal and regional differences within one type. Second, we investigate how the differences in reduction factors affect the contribution of each type to extreme events as a whole, again dependent on the scale and the threshold chosen. A clear shift occurs towards more convective extremes at higher resolution or higher percentiles. For horizontal resolutions of current climate model simulations, i.e., ∼10 km, the temporal resolution of the data as well as the chosen threshold have profound influence on which type of extreme will be statistically dominant. Third, we compare the ratio of area to duration reduction factor for convective and stratiform events and find that convective events have lower effective advection velocities than stratiform events and are therefore more strongly affected by spatial than by temporal aggregation. Finally, we discuss the entire precipitation distribution regarding data aggregation and identify matching pairs of temporal and spatial resolutions where similar distributions are observed. The information is useful for planning observational networks or storing model data at different temporal and spatial scales.

OriginalspracheEnglisch
ZeitschriftAtmospheric Chemistry and Physics
Jahrgang15
Ausgabenummer10
Seiten (von - bis)5957-5971
Anzahl der Seiten15
ISSN1680-7316
DOIs
PublikationsstatusErschienen - 29.05.2015
Extern publiziertJa

Bibliographische Notiz

Publisher Copyright:
© Author(s) 2015.

DOI

Zuletzt angesehen

Publikationen

  1. Time use and time budgets
  2. An indirectly controlled high-speed servo valve for IC engines using piezo actuators
  3. Das Alltagsmedium Blatt
  4. Introduction
  5. Taking stock–Three years of addressing societal challenges on community level through action research
  6. Experimental and numerical analysis of material flow in porthole die extrusion
  7. Number theoretical peculiarities in the dimension theory of dynamical systems
  8. The Lotka-Volterra Model for Competition Controlled by a Sliding Mode Approach
  9. Bis in den Kern
  10. endo-Hydroxy-trioxa-tris-σ-homotropilidene
  11. The edge of virtual communities ?
  12. Parameters identification in a permanent magnet three-phase synchronous motor for velocity planning to optimize traction losses in a City-Bus
  13. Case Study
  14. Einschreibung
  15. Migration in der Adoleszenz
  16. Using Large N Longitudinal Comparison to Explain Political Recruitment in Changing Democracies
  17. Towards a cross-paradigmatic framework of the social acceptance of energy systems
  18. The German Welfare System and the Continuity of Change
  19. Ownership Patterns and Enterprise Groups in German Structural Business Statistics
  20. Velocity planning to optimize traction losses in a City-Bus Equipped with Permanent Magnet Three-Phase Synchronous Motors
  21. The Social Case as a Business Case
  22. A new approach to semantic sustainability assessment
  23. Life satisfaction in Germany after reunification: Additional insights on the pattern of convergence
  24. National Parks, buffer zones and surrounding lands
  25. Infelicitous communication or degrees of misunderstanding
  26. Grazing response patterns indicate isolation of semi-natural European grasslands
  27. High temperature deformation and microstructural features of TXA321 magnesium alloy
  28. In situ synchrotron diffraction of the solidification of Mg-RE alloys
  29. Normalitätskonstruktion und Selbstbilder erwachsener Reitender mit einer Körper- oder Sinnesbehinderung
  30. Illegal Migration in Postfordism
  31. Imagined Networks: Race, Digital Media and the University
  32. Exploring the Use of the Pronoun I in German Academic Texts with Machine Learning
  33. Activity- vs. structural-oriented treatment approach for frozen shoulder