GLOBE Connections

GLOBE Hydrosphere Protocols & Related ESDE Datasets

globe.gov Hydrosphere Introduction Image

The GLOBE Hydrosphere protocols related to phenomena or data sets supported by My NASA Data are outlined below. Each GLOBE protocol page will have information for the protocol, datasheets, and related learning activities. Online e-Training is available. A particular protocol may support more than one phenomenon and may support phenomena from different spheres. To see how individual protocols relate to a particular phenomenon, you can visit the GLOBE connection for that phenomenon.

The data sets in My NASA Data's Earth System Data Explorer which supplement students' exploration of each protocol are also indicated. These supplemental data sets may measure the same variable or related variables, and they may have a different temporal scale. All data available through My NASA Data can be found on the Data Collections: Earth System Data Explorer page.

Data Literacy Cubes Icon

The My NASA Data - Data Literacy Cubes can be used to evaluate data collected by students using GLOBE protocols or maps, graphs and data obtained from the Earth System Data Explorer

Alkalinity

Students will measure the alkalinity of water using an alkalinity test kit.

Supplemental Earth System Data Explorer data sets: 

Earth System Data Explorer Monthly Precipitation - June 2018
Earth System Data Explorer - Monthly Precipitation - June 2018

Students can investigate whether or not precipitation and soil moisture are related to the alkalinity of water in an area.

Conductivity

Students will measure the electrical conductivity of water at freshwater hydrology sites.

Supplemental Earth System Data Explorer data sets: 

Students can investigate whether or not precipitation and soil moisture are related to the alkalinity of water in an area.

My NASA Data - Daily Soil Moisture - April 16, 2019
My NASA Data - Daily Soil Moisture - April 16, 2019

Dissolved Oxygen

Students will measure dissolved oxygen in the water at their site using a dissolved oxygen test kit or probe.

Supplemental Earth System Data Explorer data sets: 

Chlorophyll levels are related to dissolved oxygen in the water.

My NASA Data - Monthly Chlorophyll Concentration - January 2019
My NASA Data - Monthly Chlorophyll Concentration - January 2019

Mosquito Habitat

A mosquito habitat observation with the GLOBE Observer app has up to four steps (the first is required, the rest are optional depending on equipment and situation). The app has detailed instructions to walk you through each step.

  1. Identify and photograph potential mosquito habitats, i.e. sources of standing water
  2. Sample and count mosquito larvae (requires a scoop or container to take a sample)
  3. Identify larva type (requires magnification from a microscope or macrolens attachment)
  4. Eliminate the habitat, if possible

Students make ground-based observations using the GLOBE Observer app. These data give "scientists supplementary data as they model mosquito population outbreaks,” says Dr. Rusty Low of the Institute for Global Environmental Strategies, Arlington, Virginia, one of the NASA-funded organizations that helped develop the Mosquito Habitat Mapper.

Supplemental Earth System Data Explorer data sets: 

There are data sets for individual land cover classifications. These data are a snapshot from the late 1990s and early 2000s. Students can investigate land cover classification related to mosquito habitats. In addition, they can look at the impact of precipitation on mosquitoes.

Nitrates

Students will measure the nitrate-nitrogen content of water using a nitrate test kit.

Supplemental Earth System Data Explorer data sets: 

Chlorophyll levels are related to the nutrient content in the water.

pH

Students will measure the pH of water using either pH paper or a pH meter.

Supplemental Earth System Data Explorer data sets: 

See how soil moisture and precipitation can impact the pH of water. Sulfate aerosols make rain acidic (acid rain) when they rain out of the atmosphere.

Earth System Data Explorer Aerosols July 2019
Earth System Data Explorer - Monthly Aerosol Optical Thickness - July 2019

Salinity (Including Titration)

Students will measure the salinity of a salty or brackish water sample using a hydrometer and thermometer. Sea ice melt can impact the salinity of the ocean. 

Supplemental Earth System Data Explorer data sets: 

These data show the monthly average sea ice extent across the Northern Hemisphere. The areas in white are where ice is at least partially covering the ocean surface (at least 15% coverage). The formation of sea ice greatly increases the salinity and density of the water at remaining at the surface of the ocean, causing the water to sink. This action helps drive the global thermohaline circulation, an important circulation in the climate system. The formation of sea ice also greatly increases the surface albedo.

My NASA Data - Monthly Sea Ice Extent - December 2017
My NASA Data - Monthly Sea Ice Extent - December 2017

Water Temperature

Students will measure the temperature of water.

Supplemental Earth System Data Explorer data sets: 

These temperature data sets allow students to explore monthly temperature averages for air and the Earth's surface. They can also investigate relationships between water temperature, air temperature, and surface temperatures.

Earth System Data Explorer Monthly Surface Air Temperature February 2019
Earth System Data Explorer - Monthly Surface Air Temperature - February 2019

Water Transparency

Students will first measure water transparency at their undisturbed study site using a transparency tube or Secchi disk.

Supplemental Earth System Data Explorer data sets: 

Chlorophyll can be an indicator of the presence of phytoplankton which are one factor that can affect transparency