GLOBE Connections

Sea and Land Ice Melt: Protocols

Frost Tube

GLOBE protocols have been developed as a collaborative effort involving scientists, educators and citizen scientists. Data sheets have been developed for the purpose of a unified method of data collection.

Ice melt can impact the salinity of the ocean water. 

Salinity (Including Titration)

Students will measure the salinity of a salty or brackish water sample using a Salinity Protocolhydrometer and thermometer.

Frost Tube

Students will construct a Frost Tube that is inserted into a hole in Frost Tube Protocolundisturbed and uncompacted soil. During the cold months, students measure the depth at which water in the Frost Tube has frozen, indicating that the surrounding soil has also frozen.