Dataset Open Access

Hydroperiod maps of Donana for 2015/2016, 2016/2017 and their accompanying INSPIRE metadata XML files

Georgios Kordelas; Ioannis Manakos


MARC21 XML Export

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    <subfield code="a">&lt;p&gt;The annual hydroperiod of wetlands, which is affected by global trends and human activities, is a critical ecological parameter that shapes aquatic plants&amp;rsquo; and animals&amp;rsquo; distribution and determines available habitat for many of the living organisms. Thus, its estimation is useful for the sustainable management of wetlands.&lt;/p&gt;

&lt;p&gt;The hydroperiod maps for Donana are named: &amp;quot;Donana_Hydroperiod_from_1st_Sept_2015_to_31st_Aug_2016_using_Sentinel_2_and_Landsat_inundation_maps.tif&amp;quot; and &amp;quot;Donana_Hydroperiod_from_1st_Sept_2016_to_31st_Aug_2017_using_Sentinel_2_inundation_maps.tif&amp;quot;. Their pixel values range from 0 to 365 (or 366 for leap years) and denote the number of days a pixel is inundated within a year. They were generated by interpolating satellite-derived inundation maps falling within the period indicated in their filenames.&lt;/p&gt;

&lt;p&gt;The interpolation approach is the following: For two dates separated by n days, the occurrence of water is compared. If a pixel is inundated on both dates, then it is assumed inundated for n-days. If a pixel is not inundated on both dates, then it is assumed inundated for n/2 days. In the hydroperiod map, the total number of inundation days per pixel is determined by accumulating the inundated days throughout the desired time period.&lt;/p&gt;</subfield>
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