título de la presentación - united [email protected] [email protected]...
TRANSCRIPT
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WOfS
Water Observations from Space
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Water Observation from Space (WOfS)
WOfS (Water Observation from Space) displays historical surface water derived from satellite imagery (Landsat-7 and
Landsat-8) in a specific space and time extents with an algorithm executed in the Open Data Cube. WOfS aims to allow a
better understanding of where water is usually present; where it is seldom observed; and where inundation of the surface has
been occasionally observed by satellite and their temporal dynamics.
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WOfS BANDS
BAND 1 WOfS
BAND 2 WET
BAND 3 TOTAL
𝑊𝑂𝑓𝑆 =𝑊𝐸𝑇
𝑇𝑂𝑇𝐴𝐿∗ 100
Water Observation from Space (WOfS)
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Cuitzeo lake, Michoacán de Ocampo
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Yuriria lake, Guanajuato
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Zirahuén lake, Michoacán de Ocampo
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Usumacinta river, Tabasco
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SDG 6.6.1
Spatial extent of water-related ecosystems and
inland open waters
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SDG 6.6.1 United Nations PCSE = 6.57%
Percentage Change in Spatial Extent = [(β − γ) / β] * 100
Where β = the average national spatial extent baseline (National Dataset of water bodies)
Where γ = the average national spatial extent of any other 5 year period (WOfS 2015 National Coverage)
Source: WOfS 2015 National Coverage - Data Cube
Area: 44 492.4126 Km2
Source: Water Bodies National Dataset scale 1: 50 000 - 2010
Area: 47 622.9 Km2
https://www.unwater.org/app/uploads/2018/05/Step-by-step-methodology-6-6-1_Revision-2018-03-02_Final.pdf
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Geomedian (above) and Water Covered Area (below) of Chapala Lake 1985-2019
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Towards to a National Water Bodies Monitoring System