THMAO - Tudor Hill Marine-Atmospheric Observatory

Endorsed by SOLAS since June 2016


The Tudor Hill Marine-Atmospheric Observatory (THMAO) is an atmospheric research observatory operated by the Bermuda Institute of Ocean Sciences (BIOS). The facility situated on the island of Bermuda at 32°15.9’N, 64°52.7’W. It provides the only permanent atmospheric sampling and observation platform in the marine boundary layer of the atmosphere over the western subtropical North Atlantic Ocean and thus is a valuable asset for a number of key research programmes and projects.

THMAO is available for use by all interested parties and is currently utilized for a large number of diverse projects funded by the US National Science Foundation and US federal agencies (National Oceanic and Atmospheric Administration and National Aeronautics and Space Administration), and by international scientists from Canada, Norway and United Kingdom.

Find more about THMAO at:

Annual Update


Publications in 2021

Aldhaif, A., Lopez, D., Dadashazar, H., et al., (2021). An Aerosol Climatology and Implications for Clouds at a Remote Marine Site: Case Study Over Bermuda. Journal of Geophysical Research: Atmospheres, 126, e2020JD034038.

Dadashazar, H., Alipannah, M., Hilario, M., et al., (2021). Aerosol responses to precipitation along North American air trajectories arriving at Bermuda. Atmospheric Chemistry and Physics, 21, 16121-16141.

To view full recent research activities at: