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Open AccessArticle

Precipitation Diurnal Cycle in Germany Linked to Large-Scale Weather Circulations

1
Department of Ecology and Ecosystem Management, Technical University of Munich, Hans-Carl-von-Carlowitz-Platz 2, D-85354 Freising, Germany
2
Zentralanstalt für Meteorologie und Geodynamik, Fürstenweg 180, A-6020 Innsbruck, Austria
3
Institute for Advanced Study, Technical University of Munich, Lichtenbergstraße 2a, D-85748 Garching, Germany
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(9), 545; https://doi.org/10.3390/atmos10090545
Received: 13 August 2019 / Revised: 9 September 2019 / Accepted: 11 September 2019 / Published: 13 September 2019
(This article belongs to the Section Climatology and Meteorology)
The precipitation diurnal cycle (PDC) varies with the season and location. Its link to large-scale weather circulations has been studied in different regions. However, comparable information is lacking for Central Europe. Two decades of hourly precipitation data were combined with records of objective weather patterns over Germany, focusing on the general atmospheric wind directions (WD). The PDC is characterized by the frequency and the average amount of hourly precipitation. The precipitation frequency generally has two peaks: one in the morning and the other in the afternoon. The morning peak of the precipitation amount is small compared to that of the afternoon peak. Remarkably, WD has a prominent influence on the PDC. Days with southwesterly WD have a high afternoon peak and a lower morning peak, while days with northwesterly WD have a high morning peak and a lower afternoon peak. Furthermore, the seasonal variations of PDC are dominated by the seasonal frequency of WD classes. This study presents a general overview of the PDC in Germany with regard to its variation with seasonality, geographical location, elevation, and WD. View Full-Text
Keywords: precipitation; diurnal cycle; frequency; Germany; circulation types; objective weather pattern; atmospheric wind direction precipitation; diurnal cycle; frequency; Germany; circulation types; objective weather pattern; atmospheric wind direction
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MDPI and ACS Style

Ghada, W.; Yuan, Y.; Wastl, C.; Estrella, N.; Menzel, A. Precipitation Diurnal Cycle in Germany Linked to Large-Scale Weather Circulations. Atmosphere 2019, 10, 545.

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