is a web-based interface that enables the public to help analyze the intensities of past tropical cyclones around the globe.  The global intensity record contains uncertainties caused by differences in subjective analysis procedures around the world and through time.

Patterns in storm imagery are best recognized by the human eye, so scientists are enlisting the public. Interested volunteers will be shown one of nearly 300,000 satellite images of tropical cyclones spanning the last 35 years. They will answer simple questions about that image as part of a modified technique for estimating the maximum surface wind speed of tropical cyclones. This public collaboration will perform hundreds of thousands of classifications in just a few months—something it would take a team of scientists years to accomplish.

The end product will be a new global tropical cyclone dataset that provides 3-hourly tropical cyclone intensity estimates, confidence intervals, and a wealth of other metadata that could not be realistically obtained in any other fashion. In addition, the site serves as a channel through which to promote public education and enthusiasm about weather, climate, and tropical cyclones by providing interesting facts, discussion about current events, and the opportunity for volunteers to interact directly with scientists.

Christopher Hennon, 2012. Citizen Scientists Analyzing Tropical Cyclone Intensities. Eos, 93(40):385,387