Atlantic Meridional Transect (AMT)

The Atlantic Meridional Transect (AMT) multidisciplinary programme, which undertakes biological, chemical and physical oceanographic research during an annual voyage between the UK and destinations in the South Atlantic. Established in 1995, the programme is a well respected and established scientific research programme which enables scientists to make open ocean observations through a wide latitudinal range, including the rarely sampled north and south Atlantic gyres. The AMT cruise programme is unique and facilitates a greater understanding of the ocean and the biogeochemistry within it.


AMT assists scientists in the identification of long-term trends and forecasting of future outcomes. The resulting data is not only valuable to scientific understanding, but also addresses wider societal concerns such as sustainability, climate change and marine ecosystems. AMT research contributes to science and policy development including the social and economic understanding of the marine environment and services it delivers.

The AMT cruises have hosted over 220 scientists (from more than 60 research institutes in 18 countries), produced over 300 significant scientific papers and contributed to more than 75 PhD studies. It serves as an ideal platform for national and international scientific collaboration, a training arena for the next generation of oceanographers and an ideal facility for validation of novel technology.

The AMT programme is co-ordinated and led by PML, with our scientists on board the research voyage every year, pioneering investigations into how the Atlantic Ocean is changing.

Key information

Funder: Natural Environment Research Council (NERC) - National Capability

Project start date: September 1995

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Dr Andy Rees

Other participants

Amanda Beesley, Carolyn Harris, Denise Cummings, Dr Darren Clark, Dr Dionysios Raitsos, Dr Francesco Nencioli, Dr Gavin Tilstone, Dr Giorgio Dall'Olmo, Dr Glen Tarran, Dr Ming-Xi Yang, Dr Ruth Airs, Dr Tim Smyth, Dr Vassilis Kitidis, Dr Victor Martinez-Vicente, E. Malcolm S. Woodward, Ian Brown, John Stephens

Other recent news articles


The 27th AMT cruise embarks

The 27th Atlantic Meridional Transect (AMT) research cruise has departed from Southampton, with PML scientists on-board and spending 6 weeks sailing the Atlantic.


Even the remote ocean cannot escape microplastics scientists discover

Researchers on board a research cruise currently in the South Atlantic Ocean have been shocked by the amounts of what appear to be visible microplastic material found repeatedly in seawater samples.


Discrepancies in satellite chlorophyll are half what we previously thought

Accurate chlorophyll measurements in the ocean are crucial for understanding environmental change.  

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