Skip to main content

Description

This dataset contains shipboard bio-optical measurements collected during the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) conducted approximately 300 km offshore of San Francisco during an intensive operating period (IOP) in Fall 2022. S-MODE aims to understand how ocean dynamics acting on short spatial scales influence the vertical exchange of physical and biological variables in the ocean. Data are available in netCDF format.

Product Summary

Platforms
Ships
Instruments
TRANSMISSOMETERS ,
FLUOROMETERS
Spatial Extent

N: 42 S: 30 E: -119 W: -125.4

Geographic Region
PACIFIC OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2022-10-09 to 2022-11-02
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C2700534037-POCLOUD
Data State
COMPLETE
Number of Files/Granules
1
Processing Level
2
Science Keywords
Chlorophyll ,
Attenuation/Transmission

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

S-MODE. (2022). S-MODE Shipboard Bio-optical Measurements Version 1 [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/SMODE-RVBO2 Date Accessed: 2025-12-14

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
beam_attenuation_657nm_ACS Flow-through beam attenuation from ACS at 657 nm m-1 double -9999 0 to 2 1
beam_attenuation_657nm_CSTAR Flow-through beam attenuation from CSTAR at 657 nm m-1 double -9999 0 to 2 1
chlorophyll_ACS Chlorophyll-a based proxy from absorption line height at 676 nm. Recommended proxy for chlorophyll-a ug/L double -9999 0 to 30 1
chlorophyll_flourometer Calibrated chlorophyll-fluorescence ug/L double N/A 0 to 30 1
colored_dissolved_organic_matter CDOM (colored dissolved organic matter) from SUVF (Seapoint Ultraviolet Fluorometer) volts double N/A 0 to 0.1 1
INST_ACS Seabird ac-s Spectral Absorption and Attenuation (ACS) N/A double N/A N/A 1
INST_CSTAR WET Labs C-Star transmissometer (657 nm) N/A double N/A N/A 1
INST_FL WET Labs chlorophyll fluorometer N/A double -9999 N/A 1
INST_SUVF Seapoint Ultraviolet Fluorometer (SUVF) N/A double -9999 N/A 1
latitude Latitude of Measurement degrees_north double N/A N/A 1
longitude Longitude of Measurement degrees_east double N/A N/A 1
particulate_organic_carbon POC based proxy from ACS beam attenuation at 656.5 nm umol/L double -9999 0 to 150 1
time Time of Measurement days since 1950-1-1 double N/A N/A 1
You're viewing 13 of 13