Homework: Monitoring Global Terrestrial Surface Water Height using Remote Sensing

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This homework includes questions from both parts of the training series. You might want to record your answers on a sheet of paper or word document before submitting them here. You will not be able to save your answers and return to complete this form at a later time.

To receive a certificate of completion, you must have attended both parts and have completed this homework by May 31, 2025. Once you submit the homework, you will receive an email with a copy of your responses.

Once you click submit, you can click "View Score" to see how you did.

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Name (First Last) *

Which of the options below are historical satellite altimetry missions that provide lake level elevation data? *

5 points

a) TOPEX and Landsat

b) Jason-2 and TOPEX

c) Aqua and Terra

Landsat, Terra, and Aqua satellites carry optical sensors that are used for: *

5 points

a) Surface water elevation

b) Ocean topography

c) Surface water extent

d) All of the above

One of the biggest advantages of SWOT is that it uses radar interferometry to obtain high-resolution terrestrial surface water elevation data which includes rivers, lakes, and wetlands. *

5 points

True

False

Which of the following sample river widths can SWOT resolve? *

5 points

a) 25 m wide

b) 50 m wide

c) 150 m wide

d) 80 m wide

SWOT data can be obtained only for terrestrial waters such as lakes, rivers, and wetlands, which excludes open bodies of water such as oceans. *

5 points

a) True

b) False

SWOT global river elevation data can be downloaded using: *

5 points

a) Earthdata Search

b) WISP

c) SWOTviz

d) a & b

e) a & c

An early-adopter case study shows that SWOT data can be used for estimating ______ in unmonitored lakes and reservoirs. *

5 points

a) Water quality change

b) Evaporative water loss

c) Bathymetry

d) All of the above

USGS-WISP tool for visualizing time series of SWOT river elevation data also includes: *

5 points

a) USGS Gauge data (where available)

b) SWOT orbital pass

c) SWOT data nodes along a river

d) All of the above

SWOTViz provides time series for which of the following types of data: *

5 points

a) River water elevation and slope

b) River reach width and water area

c) River Inundation and discharge

d) a & b

e) All of the above

Based on the demonstration example in Part 2 in the river La Garonne, SWOT data showed negative slope. Considering the river elevation changes with distance it indicated backward flowing water, attributed to: *

5 points

a) Impact of tide on the river

b) Invalid data values

c) Impact of frozen river surface

d) None of the above

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