14:45–15:00 | ABSTRACT 1396
LEVERAGING PACE MULTI-ANGLE POLARIMETRY FOR OCEAN BIOGEOCHEMISTRY
The Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission is now delivering unprecedented hyperspectral radiometry and polarimetry measurements of the global ocean. Radiometry from PACE’s Ocean Color Instrument (OCI) is revealing new dimensions of ocean biogeochemistry, and could be complemented by multi-angle polarimetry from instruments such as PACE’s Hyper-Angular Rainbow Polarimeter (HARP2). Yet limited work has been done to integrate these sensing modalities and establish robust connections between multi-angle polarimetry (MAP) and marine particle properties. Here we show early results from HARP2 matched with in-situ particle properties such as phytoplankton community composition from microscopy, spectral absorption scattering and backscattering, and particle size distributions. We find coherent patterns between the in situ particle properties and HARP2 MAP observations that correlate with a large dataset of in situ polarized angular scattering and suggest a few parameters such as particle size and composition can be inverted from space-based MAP data. We discuss some of the observational and logistical challenges involved in matching spaceborne MAP and cruise data, and close with discussion of the complementarity of HARP2 and OCI for estimating ocean particle properties.
Brent McBride, University of Maryland Baltimore County, [email protected], https://orcid.org/0000-0002-3138-9341
Patrick Gray, University of Maine, [email protected]
B. B. Cael, University of Chicago, [email protected]
Lorraine Remer, University of Maryland Baltimore County, [email protected]
Emmanuel Boss, University of Maine, [email protected]
