March 22, 2021 - Green up in Louisiana

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   Greening in LA
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   The month of March is a time of transition across the southern United
   States—a time when lengthening days and increasing warmth spurs lush
   vegetative growth. From a satellite’s vantage point, the wash of green
   that appears over the landscape is one of the most noticeable signs of
   winter’s passing and the arrival of spring. With an estimated annual
   last frost date of March 15, green-up arrives early in Southern
   Louisiana.

   On March 18, 2021, the Moderate Resolution Imaging Spectroradiometer
   (MODIS) on board NASA’s Aqua satellite acquired a true-color image of a
   greening southern Louisiana landscape. The image centers on the
   Mississippi Delta, with the muddy Mississippi River winding towards the
   southeast to spill into the Gulf of Mexico. The Atchafalaya River
   courses southward to the west of the Mississippi, depositing copious
   sediment into the Atchafalaya Bay. The city of New Orleans is marked by
   an area of gray pixels south of Lake Pontchartrain. Other than the
   rivers, most of the landscape wears spring-time shades of green. Faint
   green can even be seen in the otherwise gray New Orleans.

   While a single satellite image gives valuable information about a given
   location on a given day, sometimes comparing images collected on two
   different days gives even more information. The NASA Worldview App
   makes it simple to compare images. To view a roll-over comparison
   between this MODIS image collected on March 18 with the Aqua MODIS
   image collected on February 19, 2021 tap  here.

   Image Facts
   Satellite:  Aqua
   Date Acquired: 3/18/2021
   Resolutions:  1km (241.6 KB),  500m (681.2 KB),  250m (496.8
   KB)
   Bands Used: 1,4,3
   Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2021-03-22
 
