Contrails - Research, comments and links

Contrails and aviation-cirrus 
Activities (01)

Contrail Count-a-Thon for Earth Day (April 22, 2004)

In honor of Earth Day, the GLOBE Program invites you to join in a scientific experiment on April 22, 2004, to count contrails in your piece of the sky. Teachers, students, and anyone interested in helping to develop a better understanding of the Earth are welcome to participate.

GLOBE has partnered with scientists at the National Aeronautical and Space Administration (NASA) to design a project that will allow you to: contrails

  • Collect data about the contrails and clouds that you see in the sky following directions given in the Contrail Count-a-Thon Student Worksheet and recording your data on a printout of the Data Sheet.
  • Share the data that you collect by entering it on the project's Online Data Entry Form*.

GLOBE: An exciting, worldwide, hands-on education and science program'.   

Why Should You Participate?

Clouds are the largest variable controlling Earth's atmospheric temperature and climate. Any change in global cloud cover may contribute to long-term changes in Earth's climate. Likewise, any change in Earth's climate may have effects on natural resources. Contrails, especially persistent contrails, represent a human-caused increase in the Earth's cloudiness, and are likely to be affecting climate and ultimately our natural resources." 

Some Links:
Learn About GLOBE
Questions/Comments regarding the GLOBE Program 
Dr Lin
H. Chambers
 (Contrail Scientist, Globe Project )
Langley Atmospheric Sciences Data Center
Clouds and the Earth's Radiant Energy System (CERES
Radiation and Aerosols Branch

International meeting in Aix-en-Provence (2004, september),
organised by
Inrets and Ensam (2 french laboratories). 

Van: []
Verzonden: vrijdag 23 januari 2004 9:59
Onderwerp: Please have a look at

Dear sir, 

I am pleased you notice contrails problem. We have begun to archive images of sky, not so blue in Provence. Unfortnately, we have not enough manpower to manage images in order to do a significant publication in scientist revues. Since the beginning of this year (2004), I work (I am scientist researcher) around airport damages (noise, exhaust emissions (see ). 

Contrails are a difficult problem. We need data. So, could you compile your data, and write a paper on this subject? 

Inrets and Ensam (2 french laboratories) have planned an international meeting in Aix-en-Provence (2004, september). 

Holger Pedersen (, a danish scientist, is invited. You may contact him and, why not, present yours pictures, problem for NL and solutions. 

I'm affraid dies nearly. New team thinks aircrafts are not so dangerous for Cote Bleue and, probably, will stop communication ob this subject.

Sincerely yours 
Dr Bruno Brenier.
Patrimoine Cote Bleue 

Contrails are Bad News  (Startpage)