Welcome to the home page of the "Pan-Arctic Studies of the Coupled Tropospheric, Stratospheric and Mesospheric Circulation".

• The full project description can be found on our project overview page.
• Lidar data is available for download on the mesosphere page.

This page gives our latest map of the status of the Arctic stratospheric vortex and anticyclones as well as a briefing and forecast on the upcoming behavior of the Arctic middle atmosphere.

This site presents research observations as well as data products from a variety of government agencies. Access to the tropospheric and stratospheric and tropospheric data can be found here and mesospheric data can be found here