﻿WEBVTT

00:00:00.291 --> 00:00:04.958
♫

00:00:04.958 --> 00:00:08.458
The Landsat archive is the world's
longest continuously collected

00:00:08.458 --> 00:00:10.750
record of the Earth's surface.

00:00:10.750 --> 00:00:13.416
In mid September, it notched
another milestone

00:00:13.416 --> 00:00:15.666
by adding its nine millionth scene.

00:00:15.968 --> 00:00:18.583
This particular image
from north central Paraguay

00:00:18.583 --> 00:00:22.041
helps tell the kind of story
that only a long historical record

00:00:22.041 --> 00:00:23.708
like Landsat can.

00:00:23.984 --> 00:00:27.250
The rectangular tracks of brown and tan
that dapple the landscape

00:00:27.250 --> 00:00:30.208
between the states of Boqueron and
Upper Paraguay

00:00:30.208 --> 00:00:32.000
signal deforestation.

00:00:32.000 --> 00:00:34.750
Land is cleared through controlled
burns to make way

00:00:34.750 --> 00:00:38.208
for crops like soybeans, or
to make room for livestock.

00:00:38.627 --> 00:00:42.333
The nine millionth scene even
shows an active fire.

00:00:42.740 --> 00:00:46.833
One Landsat-based study found
that some 44,000 square kilometers

00:00:46.833 --> 00:00:51.125
of forest were lost between 1987
and 2012.

00:00:51.333 --> 00:00:55.916
This animation shows the dramatic
decline in forested land.

00:00:55.916 --> 00:00:58.625
The Landsat archive continues
to grow.

00:00:58.625 --> 00:01:01.654
This chart shows the growth in
Landsat scene coverage

00:01:01.654 --> 00:01:05.708
since the launch of the first
orbiter in 1972.

00:01:06.962 --> 00:01:11.583
The launch of Landsat 9 in 2021
will maintain the continuity

00:01:11.583 --> 00:01:15.166
of this one-of-a-kind
scientific resource.

00:01:15.166 --> 00:01:20.921
♪♪♪

00:01:20.921 --> 00:01:21.394
♪♪

00:01:21.394 --> 00:01:21.910
♪
