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From: Dan Richter (1:317/3)
To: All
Date: Mon, 19.10.20 13:00
MODIS Pic of the Day 19 October 2020
October 19, 2020 - Flooding on the Songhua River, Eastern China


Flooding on the Songhua River

On October 13, 2020, the Moderate Resolution Imaging Spectroradiometer
(MODIS) on board NASA’s Terra satellite acquired a striking false-color
image of flooding along the Songhua River and nearby rivers. The
swollen Nen River can be seen in the west, curving eastward to meet the
flooded Songhua River. Other tributaries of the Songhua also appear
above flood stage, including the Di’er Songhua and Lalin rivers, in the

This false-color image uses infrared and visible light (MODIS bands
7,2,1) to help separate water from land and vegetation. Vegetation
appears bright green, water is deep blue, bare land appears tan, and
clouds appear white and light blue.

While a single image shows the situation on a specific day, a
comparison of two different days can better illustrate the changes
caused by flooding. Thanks to the NASA Worldview App, it is easy to
view a roll-over comparison of two Terra MODIS images. To view the
comparison of the image above, acquired October 15, to an image of the
same area acquired on July 10, 2020, click here.

The NASA Worldview app provides a satellite's perspective of the planet
as it looks today and as it has in the past through daily satellite
images. Worldview is part of NASA’s Earth Observing System Data and
Information System. EOSDIS makes the agency's large repository of data
accessible and freely available to the public.

Image Facts
Satellite: Terra
Date Acquired: 10/15/2020
Resolutions: 1km (100.8 KB), 500m (360.4 KB), 250m (1 MB)
Bands Used: 7,2,1
Image Credit: MODIS Land Rapid Response Team, NASA GSFC

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