El Yunque National Forest, Puerto Rico Canopy Change Nadir View (2017-2018)

Released Monday, December 10, 2018
Updated Wednesday, December 12, 2018 at 2:00PM

ID: 4621

- Written by:
- Alex Kekesi and
- Ellen T. Gray
- Scientific consulting by:
- Doug C. Morton
- Produced by:
- Matthew Radcliff
View full credits

Animation that does of a low fly over of El Yunque National Forest, Puerto Rico. The entire animation is split screen showing the 2017 data on top and 2018 on bottom. Notice the dense lush forest canopy in 2017 and how it covers and shades much of the forest floor. However, in 2018, after Maria devastated the forest in late 2017, the tree canopy has been greatly thinned exposing much more of the forest floor.

In September 2017, Hurricane Maria's lashing rain and winds also transformed Puerto Rico's lush tropical rainforest landscape. Research scientist Doug Morton of Goddard was part of the team of NASA researchers who had surveyed Puerto Rico's forests six months before the storm. The team used Goddard’s Lidar, Hyperspectral, and Thermal (G-LiHT) Airborne Imager, a system designed to study the structure and species composition of forests. Shooting 600,000 laser pulses per second, G-LiHT produces a 3D view of the forest structure in high resolution, showing individual trees in high detail from the ground to treetop. In April 2018 (post-Maria) the team went back and surveyed the same tracks as in 2017 (before Maria).

The extensive damage to Puerto Rico's forests had far-reaching effects, Morton said. Fallen trees that no longer stabilize soil on slopes with their roots as well as downed branches can contribute to landslides and debris flows, increased erosion, and poor water quality in streams and rivers where sediments build up.

2017 El Yunque National Forest, Puerto Rico. Notice the dense forest coverage before Hurricane Maria struck six months later.

2018 El Yunque National Forest, Puerto Rico. Notice the exposed forest floor after Hurricane Maria hit in late 2017.

NASA Science: Earth

Earth Science HDTV Hyperwall Lidar Lidar Depolarization Ratio Location Puerto Rico Spectral/Engineering Tree height

Credits

Please give credit for this item to:
NASA's Scientific Visualization Studio

Data visualizers
- Alex Kekesi (GST) [Lead]
- Cindy Starr (GST)
- Greg Shirah (NASA/GSFC)
- Horace Mitchell (NASA/GSFC)
Writer
- Ellen T. Gray (NASA/HQ) [Lead]
Scientist
- Doug C. Morton (NASA/GSFC) [Lead]
Producer
- Matthew Radcliff (KBRwyle) [Lead]
Technical support
- Ian Jones (ADNET)
- Laurence Schuler (ADNET)
Data provider
- Hyeungu Choi (GST)

Series

This visualization can be found in the following series:

Lidar

Datasets used in this visualization

Airplane LiDAR (A.K.A. LiDAR 3D point cloud) (Collected with the G-LiHT sensor)

Observed Data | NASA/GSFC

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Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

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  Dec. 10, 2018, 7 a.m.
  Sample Composite that split screens the lidar swath over the El Yunque National Forest, Puerto Rico. During the split screen, 2017 data is on the upper left and 2018 data on the bottom right. As the camera moves northwest, the viewer can see patches of ground becoming visible in the 2018 data. This is due to the vast numbers of trees that were stripped or fell during Hurricane Maria in September 2017. In September 2017, Hurricane Maria s forests had far-reaching effects, Morton said. Fallen trees that no longer stabilize soil on slopes with their roots as well as downed branches can contribute to landslides and debris flows, increased erosion, and poor water quality in streams and rivers where sediments build up. 2017 El Yunque National Forest, Puerto Rico six months before Maria. 2018 El Yunque National Forest, Puerto Rico after Maria hit in late 2017.
  Read more
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