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the globe earth day 2004 contrail count-a-thonEarly in 2004 the GLOBE Science team suggested a contrail count activity to celebrate Earth Day 2004, which was held this year on April 22nd in the United States and some other countries around the world. The GLOBE contrail team embraced this idea and developed a simplified data collection sheet for this special project. Information about the event was shared through the GLOBE site, UCAR and NASA press releases, the NASA portal ( and the CERES S'COOL Project ( On Earth Day, about 120 observations were received through the GLOBE Contrail Count-a-Thon website, about 70 contrail observations were received through regular GLOBE data reporting, and 19 contrail observations were received through regular S'COOL data reporting. Only observations between 11:00 and 13:00 local time were included in the Count-a-Thon. The event was reported in the Boulder Daily Camera beforehand and in the Oregon Register-Guard after the fact. It was also reported on National Public Radio s Day-to-Day show; whose host even submitted an observation. This poster discusses the Count-a-Thon experience and reports the results.
Document ID
Document Type
Preprint (Draft being sent to journal)
Chambers, Lin H.
(NASA Langley Research Center Hampton, VA, United States)
Cole, Julia
(Science Applications International Corp. United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Subject Category
Environment Pollution
Meeting Information
8th Annual GLOBE Conference(Boulder, CO)
Funding Number(s)
OTHER: 23R-622-96-9H-02-02
Distribution Limits
Work of the US Gov. Public Use Permitted.

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NameType 20040084855.pdf STI