Assessment of Water Cycle Intensification Over Land using a Multisource Global Gridded Precipitation DataSet. Issue 21 (11th November 2019)

• Record Type: Journal Article
• Authors: Markonis, Y.; Papalexiou, S. M.; Martinkova, M.; Hanel, M.
• Is Part Of: Journal of geophysical research. Volume 124:Issue 21(2019)
• Page Start: 11175
• Page End: 11187
• Publication Date: 2019-11-11
• Subjects: precipitation -- water cycle intensification -- heavy rainfall -- MSWEP -- rainfall extremes -- precipitation quantiles; Atmospheric physics -- Periodicals; Geophysics -- Periodicals; 551.5
• DOI: 10.1029/2019JD030855
• Languages: English
• ISSNs: 2169-897X

Abstract

Abstract: The change in the empirical distribution of future global precipitation is one of the major implications regarding the intensification of global water cycle. Heavier events are expected to occur more often, compensated by decline of light precipitation and/or number of wet days. Here, we scrutinize a new global, high‐resolution precipitation data set, namely, the Multi‐Source Weighted‐Ensemble Precipitation v2.0, to determine changes in the precipitation distribution over land during 1979–2016. To this end, the fluctuations of wet days precipitation quantiles on an annual basis and their interplay with annual totals and number of wet days were investigated. The results show increase in total precipitation, number of wet days, and heavy events over land, as suggested by the intensification hypothesis. However, the decline in light/medium precipitation or wet days was weaker than expected, debating the "compensation" mechanism. Key Points: There is significant increase in total precipitation, number of wet days and heavy events over land Decrease of light/medium precipitation coupled with heavy precipitation increase was detected in a small fraction of the land area Precipitation declines over the atmospheric divergence zones but heterogeneously