Clouds - Atmosphere
Clouds
Protocol
This protocol describes how to observe and report which types of clouds are visible, how much of the sky is covered by clouds, and the opacity of clouds, as well as sky and surface conditions. Cloud observations can be taken at any time! This protocol is designed to be flexible and fit into your schedule, classifying, observing, and reporting cloud observations when it works for you. If you record observations while a satellite is overhead, you may then receive an email from NASA comparing your surface-level observations to satellite observations from above.​​​​​​​
NASA Support Page for GLOBE Clouds and Satellite Comparison
Your cloud observations help NASA to better understand the different types of clouds and the effects they have on Earth’s climate. NASA matches cloud observations to corresponding satellite data. Satellites only see the top of the clouds while you see the bottom. By putting these two vantage points together, we get a much more complete picture of clouds in the atmosphere.
Find satellite overpass times by accessing the NASA Cloud Satellite Portal.
This protocol describes how to measure the current air temperature when an instrument shelter is not available. Current air temperature can be measured using a thermometer held in the open air but in the shade for at least 3 minutes.
This protocol describes how to determine the amount of moisture in your local environment, including the amount of rain and snowfall and the pH of precipitation.
This protocol guides you in measuring the relative humidity using either a digital hygrometer or a sling psychrometer.