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From: Dan Richter (1:317/3)
To: All
Date: Mon, 22.03.21 12:00
MODIS Pic of the Day 22 March 2021
March 22, 2021 - Green up in Louisiana


Greening in LA

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

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
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC

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