GLOBE Connections

Observing Plant Growth Patterns: Measuring Tree Height

Measuring Tree Height

The Trees Around the GLOBE Campaign commenced on September 15, 2018 in conjunction with NASA's ICESat-2 satellite launch on the the same date at 6:02am PDT. This campaign is a student research campaign focusing on tree height - one of the measurements conducted by the ICESat-2 mission. Tree height is not just a measurement - it is a gateway to understanding many things about the environment. The structure of tree canopies, the 3D arrangement of individual trees, has a huge effect on how ecosystems function and cycle through carbon, water, and nutrients. Trees Around the GLOBE Campaign

Scientists from the ICESat-2 Mission will periodically review the tree height data collected by the GLOBE community throughout this campaign. The data will allow scientists to use it as satellite data validation and in potential professional research.

Students and teachers participating in this campaign are encouraged to use GLOBE protocols to measure tree height. GLOBE has several ways to measure tree height. 

Biometry Protocol
Overview: Students walk the half-diagonals of their Land Cover Sample Site and take one or more biometry measurements. These may include canopy cover and ground cover, identifying dominant and co-dominant vegetation species, and measuring tree circumference, GPS coordinates and height, and/or graminoid biomass.

 

Measure Tree Height on a Slope-Stand by Tree Technique

Measure Tree Height on a Slope-Stand By Tree Technique

Measure Tree Height on a Slope- Two-Triangle with Eyes Higher than Tree Base Technique Field Guide 

Measuring Tree Height-Eyes Higher than the Tree Base

 


Measure Tree Height on a Slope- Two-Triangle with Eyes Lower than Tree Base Field Guide 

Measuring Tree Height-Eyes Lower than Tree Base

 


Measure Tree Height on Level Ground- Simplified Clinometer Technique Field Guide 

Measuring Tree Height on Level Ground