WEBVTT FILE

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The idea is that a lot of these reservoirs,

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we don't have in-situ
measurements of the elevation or storage,

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or there are,
they are not publicly available.

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We are using the elevation
collected by ICESat-2

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the “E” part, the land elevation,

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but more specifically is the water surface
elevation.

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So we leverage this information to use it

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to generate the reservoirs area-elevation

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relationships and also to estimate time

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series of the elevation and storage

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so that we can use this data set

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both for science and applications.

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With ICESat-2, it has very high, highly accurate elevation.

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The downsides of it is the long return period.

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So what we are doing is
we leverage this elevation information

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in combination
with other satellite data, like Landsat,

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so build up to build this
bathymetry information.

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So once we have this,
we have the flexibility

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to estimate the storage,
either from elevation from area

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whenever you have observation,
you increase the

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you know, the temporal resolution.

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Through using this area-

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elevation relationship, we combine
with some MODIS and VIIRS data.

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We developed a global water
reservoir product for NASA.

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This is one of the
NASA-funded projects.

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So you can picture
people in India can

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go to this website
and access the data.

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There are a lot of reservoirs

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not monitored or shared,

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and there are many of them

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in remote locations.

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And in addition to reservoirs,
there are also many

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natural lakes
of different sizes.

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So ICESat-2, because its

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high spatial resolution,
that benefits a lot.