Aggregates and their distributions determined from LOPC observations made using an autonomous profiling float

  title={Aggregates and their distributions determined from LOPC observations made using an autonomous profiling float},
  author={Colleen M. Petrik and George A. Jackson and David M. Checkley},

Sinking Organic Particles in the Ocean—Flux Estimates From in situ Optical Devices

Optical particle measurements are emerging as an important technique for understanding the ocean carbon cycle, including contributions to estimates of their downward flux, which sequesters carbon

Estimating zooplankton vertical distribution from combined LOPC and ZooScan observations on the Brazilian Coast

The analytical technique described here enabled the analysis of zooplankton vertical structure in a wide range of marine ecosystems off Brazil and could serve as a basis to revisit historical data collected with similar methods elsewhere.

Sinking flux of particulate organic matter in the oceans: Sensitivity to particle characteristics

A mechanistic model for the depth-dependent, sinking, particulate mass flux constituted by a range of sinking, remineralizing particles that contributes to a growing body of mechanistic export flux models that offer scope to incorporate underlying dynamical and biological processes into global carbon cycle models.

Turbulence mediates marine aggregate formation and destruction in the upper ocean

Using simultaneous field observations of turbulence and aggregates, it is suggested that turbulence enhances aggregate formation up to a critical turbulent kinetic energy dissipation rate of 10−6 (W kg−1), above which the smallest turbulent eddies limit aggregate size.

Size‐Differentiated Export Flux in Different Dynamical Regimes in the Ocean

Export of Particulate Organic Carbon (POC) is mainly driven by gravitational sinking. Thus, traditionally, it is thought that larger, faster‐sinking particles make up most of the POC export flux.



Assessing plankton and other particles in situ with the SOLOPC

We combined a Sounding Oceanographic Lagrangian Observer float with a Laser Optical Plankton Counter (LOPC) and a fluorometer to make an autonomous biological profiler, the SOLOPC. The instrument

Particle size distributions in the upper 100 m water column and their implications for animal feeding in the plankton

The physical strength of marine snow and its implications for particle disaggregation in the ocean

Abiotic fragmentation of large, rapidly sinking aggregates into smaller, suspended particles by fluid shear has been suggested as an important process governing the particle size spectrum in the