Articles | Volume 19, issue 3
Hydrol. Earth Syst. Sci., 19, 1521–1545, 2015
https://doi.org/10.5194/hess-19-1521-2015
Hydrol. Earth Syst. Sci., 19, 1521–1545, 2015
https://doi.org/10.5194/hess-19-1521-2015

Research article 25 Mar 2015

Research article | 25 Mar 2015

A global data set of the extent of irrigated land from 1900 to 2005

S. Siebert et al.

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ED: Publish subject to minor revisions (Editor review) (28 Jan 2015) by Giuliano Di Baldassarre
AR by Stefan Siebert on behalf of the Authors (25 Feb 2015)  Author's response    Manuscript
ED: Publish as is (02 Mar 2015) by Giuliano Di Baldassarre
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Short summary
We developed the historical irrigation data set (HID) depicting the spatio-temporal development of the area equipped for irrigation (AEI) between 1900 and 2005 at 5arcmin resolution. The HID reflects very well the spatial patterns of irrigated land as shown on two historical maps for 1910 and 1960. Global AEI increased from 63 million ha (Mha) in 1900 to 111 Mha in 1950 and 306 Mha in 2005. Mean aridity on irrigated land increased and mean natural river discharge decreased from 1900 to 1950.