Timeline of THOR project

• December 2007: Initial demonstration of halo measurements in snow (See the December 16, 2007 Image of the week at the Climate and Radiation Branch website)
• December 2007: Article on potential capabilities of THOR snow and sea ice measurements published
• June 2005: Article on THOR cloud measurements published
• February 2005: THOR web site unveiled
• September 2003: AASI campaign
• March 2002: THOR Validation campaign over the DOE ARM site in Oklahoma
• 1999-2000: THOR instrument built
• 1998-1999: THOR instrument designed
• 1997: Laboratory experiments of diffuse halos in artificial clouds
• 1996: Demonstration of feasibility: offbeam lidar signal detected by tilting the transmitter of a ground based lidar so that the receiver measured offbeam signals.

Setup of 1997 laboratory experiments