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| Titel |
Projected changes in US rainfall erosivity |
| VerfasserIn |
M. Biasutti, R. Seager |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 6 ; Nr. 19, no. 6 (2015-06-26), S.2945-2961 |
| Datensatznummer |
250120753
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| Publikation (Nr.) |
 copernicus.org/hess-19-2945-2015.pdf |
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| Zusammenfassung |
Downscaled rainfall projections from 21 climate models from the CMIP5 (Coupled Model Intercomparison Project Phase 5) archive
are used to estimate future changes in rainfall erosivity in the continental
Unites States. To estimate erosivity from rainfall in the absence of
sub-hourly data, we have used both daily rainfall values and the modified
Fournier index – which is based on monthly rainfall accumulation – and derived
the scaling relationship between rainfall and erosivity from observational
estimates of both.
The expectation of overall increase in erosivity is confirmed by these
calculations, but a quantitative assessment is marred by large uncertainties.
Specifically, the uncertainty in the method of estimation of erosivity is
more consequential than that deriving from the spread in climate simulations
and leads to changes of uncertain sign in parts of the southwest and Texas.
We suggest that progress can be made by establishing a more reliable
functional relationship between daily rainfall and erosivity. |
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