Monday, September 28, 2020

WyomingView's First Virtual Earth Observation Day Outreach @ Spring Creek Elem. School

Landsat images acquired in2019 show
algal blooms in Keyhole Res. Wyo. These
blooms form under abundant sunlight,
temperature and nutrients. Landsat images
are available from US Geological Survey.


Third graders in the Spring Creek Elementary School (Laramie, WY) learned how satellite images are used for tracking algal blooms in waterbodies throughout the US.

Students in 3rd grade GATE science class are learning about water and sources of water pollution. Currently they are finding solutions to address environmental issues such as oil spills, acidic conditions, and harmful algal blooms. 

First, students learned the sources of chemicals that would eventually become the nutrients for the algae once they enter waterbodies. Algal blooms appear when there is an abundance of sunlight and higher temperatures. 

Next, they saw how algal blooms appear in images captured by Landsat and other satellites. Aerial and satellite images provided by USGS, NASA, and several state environmental agencies were used for this outreach event. These satellite images showed algal blooms in small and large waterbodies throughout the US. 

Describing the value of this outreach activity, Ms. Natalie Davis, their teacher commented “provided students with real life data and imaging that brought all the work we did in class.  Students were able to see real examples of the impact water pollution has, and tie that back to what they had been testing/studying in class the weeks prior”. 

This outreach event was conducted virtually on Sept 23, 2020 due to COVID-19 restrictions.

Monday, September 21, 2020

Landsat 7 captures active fires in SE Wyoming (Sep 19, 2020)

Last Saturday (Sep 19), Landsat 7 satellite passed over the Mullen Fire in Medicine Bow National Forest (Wyo.) and captured the active fires. Images captured in spectral regions that are invisible to humans shows active fires.

The stripes in the Landsat 7 image correspond to missing data due to scan line corrector malfunction developed in 2003. Despite this limitation, images continued to provide valuable information about forests, croplands, water bodies and many more.  Landsat 9, the next satellite in the series, is scheduled to launch in 2021. For more information about Landsat, please visit https://landsat.usgs.gov.

Mullen Fire started on Sep 17, and as of Monday (Sep 21) has burned more than 13,835 acres.  Please visit the InciWeb site for more information about this fire.