Oceanography and Atmospheric Sciences and Meteorology Commons^™

Underway Spectrophotometry Along The Atlantic Meridional Transect Reveals High Performance In Satellite Chlorophyll Retrievals, Robert J.W. Brewin, Giorgio Dall'olmo, Silvia Pardo, Virginie Van Dongen-Vogels, Emmanuel S. Boss

Marine Sciences Faculty Scholarship

To evaluate the performance of ocean-colour retrievals of total chlorophyll-a concentration requires direct comparison with concomitant and co-located in situ data. For global comparisons, these in situ match-ups should be ideally representative of the distribution of total chlorophyll-a concentration in the global ocean. The oligotrophic gyres constitute the majority of oceanic water, yet are under-sampled due to their inaccessibility and under-represented in global in situ databases. The Atlantic Meridional Transect (AMT) is one of only a few programmes that consistently sample oligotrophic waters. In this paper, we used a spectrophotometer on two AMT cruises (AMT19 and AMT22) to continuously measure …