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​​​​​​​​​​​​​​Update: ​​​​​​​​​​​​​​The eTraining modules are now web-based and are available for all to access.
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E Training

Protocol eTraining

Hydrosphere

INTRODUCTION TO HYDROSPHERE

Learn how to select a Hydrosphere study site and be prepared for taking water measurements using different GLOBE Hydrosphere Investigation protocols.

ALKALINITY

Learn how to use an alkalinity kit to measure the alkalinity of a water sample from your Hydrosphere study site. The exact procedure depends on the instructions in the alkalinity kit used.

DISSOLVED OXYGEN

Learn how to use a dissolved oxygen kit or probe to measure the amount of dissolved oxygen in a water sample collected at your Hydrosphere study site.

ELECTRICAL CONDUCTIVITY

Learn how to measure electrical conductivity using an electrical conductivity meter and estimate the total dissolved solids from electrical conductivity measurements at your Hydrosphere study site.

Supporting Material:
Electrical Conductivity Tutorial
In this tutorial, explore the electrical conductivity of liquids and follow the GLOBE protocol used to measure the electrical conductivity of water using an electrical conductivity meter.
MOSQUITO LARVAE Using GO MHM App
Learn how to collect, sort, identify and count the number of mosquito larvae, and determine whether your specimens represent taxa that potentially transmit disease. Support community health initiatives by eradicating breeding sites in containers in your community. You will learn how to report your data to the GLOBE website and visualize data using GLOBE’s Visualization System.
NITRATE

Learn how to use a nitrate kit to measure the nitrate-nitrogen in a water sample at your Hydrosphere study site.

SALINITY

Learn how to determine the salinity of a water sample by using a hydrometer to measure the specific gravity of the water sample and a thermometer to measure the water's temperature.

WATER pH

Learn how to use a pH meter or pH paper to measure the pH of water at your Hydrosphere study site.

Supporting Material:
pH Paper Interactive
Learn about pH in this virtual lab experience, conducting the GLOBE protocol for pH measurement of water using pH paper.
WATER TEMPERATURE

Learn how to measure the temperature of a water sample by using an alcohol-filled thermometer or temperature probe.

Supporting Material:
Water Temperature Interactive
Practice taking water temperature measurements with an alcohol-filled thermometer or a digital water temperature probe.
WATER TRANSPARENCY

Learn how to determine the transparency of water using a Secchi disk and a transparency tube.

Supporting Material:
Water Transparency Interactive
Learn how to build a water transparency tube and use it to measure the transparency of natural waters following the GLOBE protocol for measuring water transparency with a transparency tube.

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