Hydrosphere

This introductory module introduces GLOBE’s hydrosphere investigation area. You will learn why it is important to document and monitor the hydrosphere. You will be introduced to the different GLOBE protocols used to collect hydrosphere data. Step by step instructions for documenting a hydrosphere study site are outlined, as well as the steps you need to follow to report a new hydrosphere study site to the GLOBE database using GLOBE’s mobile data app.
Learn how to take water temperature measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Water Temperature Protocol, using an alcohol-filled thermometer. After completing this module, you will be able to define water temperature and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water temperature using an alcohol-filled thermometer. You will know how to upload your data to GLOBE and be able to visualize water temperature data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

Practice taking water temperature measurements with an alcohol-filled thermometer or a digital water temperature probe.
Learn how to take water temperature measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Water Temperature Protocol, using a temperature probe. After completing this module, you will be able to define water temperature and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water temperature using a probe. You will know how to upload your data to GLOBE and be able to visualize water temperature data submitted from around the world using GLOBE’s Visualization System.
Learn how to take water transparency measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Water Transparency Protocol, using a piece of scientific equipment known as a Secchi Disk. After completing this module, you will be able to define water transparency and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water transparency using a Secchi Disk. You will know how to upload your data to GLOBE and be able to visualize water transparency data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

Learn how to build a Secchi disk and use it to make water transparency measurements following the GLOBE protocol for water transparency measurement with a Secchi disk.
Learn how to take water transparency measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Water Transparency Protocol, using a piece of scientific equipment known as a transparency tube. After completing this module, you will be able to define water transparency and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water transparency using a transparency tube. You will know how to upload your data to GLOBE and be able to visualize water transparency data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

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.
Learn how to take electrical conductivity measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Electrical Conductivity Protocol. After completing this module, you will be able to define electrical conductivity and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting electrical conductivity measurements using a meter or a probe. You will know how to upload your data to GLOBE and be able to visualize electrical conductivity data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

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.
Learn how to take water pH measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the water pH Protocol, using pH paper. After completing this module, you will be able to define water pH and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting pH data using pH paper. You will know how to upload your data to GLOBE and be able to visualize pH data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

Learn about pH in this virtual lab experience, conducting the GLOBE protocol for pH measurement of water using pH paper.
Learn how to take water pH measurements at your GLOBE hydrosphere study site. This module provides a step-by-step introduction of the water pH Protocol, using a pH meter. After completing this module, you will be able to define water pH and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting pH data using a pH meter. You will know how to upload your data to GLOBE and be able to visualize pH data submitted from around the world using GLOBE’s Visualization System.

Supporting Material:

Learn about pH in this virtual lab experience, conducting the GLOBE protocol for pH measurement of water using a pH meter.
Learn how to take alkalinity measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Alkalinity Protocol. After completing this module, you will be able to define water alkalinity and explain how environmental conditions affect the alkalinity of a water body. You will learn the procedure for conducting alkalinity measurements using a test kit. You will know how to upload your data to GLOBE and be able to visualize alkalinity data submitted from around the world using GLOBE’s Visualization System.
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.
Learn how to take dissolved oxygen measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Dissolved Oxygen Protocol. After completing this module, you will be able to define dissolved oxygen and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting dissolved oxygen measurements using a commercial kit. You will know how to upload your data to GLOBE and be able to visualize dissolved oxygen data submitted from around the world using GLOBE’s Visualization System.
Learn how to take dissolved oxygen measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Dissolved Oxygen Protocol. After completing this module, you will be able to define dissolved oxygen and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting dissolved oxygen measurements using a probe. You will know how to upload your data to GLOBE and be able to visualize dissolved oxygen data submitted from around the world using GLOBE’s Visualization System.
Learn how to take salinity measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Salinity Protocol, using the titration method. After completing this module, you will be able to define water salinity and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water salinity using a titration method. You will know how to upload your data to GLOBE and be able to visualize water salinity data submitted from around the world using GLOBE’s Visualization System.
Learn how to take salinity measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Salinity Protocol, using a piece of scientific equipment known as a hydrometer. After completing this module, you will be able to define water salinity and explain how changing environmental conditions will result in different measurements. You will learn the procedure for measuring water salinity using a hydrometer method. You will know how to upload your data to GLOBE and be able to visualize water salinity data submitted from around the world using GLOBE’s Visualization System.
Learn how to take nitrate measurements at your GLOBE hydrosphere study site. This module provides a step by step introduction of the Nitrate Protocol. After completing this module, you will be able to define water nitrates and explain how changing environmental conditions will result in different measurements. You will learn the procedure for collecting nitrate data using a commercial test kit. You will know how to upload your data to GLOBE and be able to visualize nitrate data submitted from around the world using GLOBE’s Visualization System.