In Situ Estimates of Net Primary Production in the Western North Atlantic With Argo Profiling Floats.

ABSTRACT: The ¹⁴C incubation method for net primary production (NPP) has limited spatial/temporal resolution, while satellite approaches cannot provide direct information at depth. With chlorophyll-a and backscatter measurements from BGC-Argo floats, we quantified year-round NPP in the western North Atlantic Ocean using both the Carbon-based Productivity Model (CbPM) and Photoacclimation Productivity Model (PPM). Comparison with NPP profiles from ¹⁴C incubation measurements showed advantages and limitations of both models. CbPM reproduced the magnitude of NPP in most cases. However, in the summer the CbPM-based NPP had a large peak in the subsurface, which was an artifact from the subsurface chlorophyll maximum caused by photoacclimation. PPM avoided the artifacts from photoacc

SUBMITTER: Yang B 

PROVIDER: S-EPMC9286042 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature