Creator: POCLOUD
Keywords: Chlorophyll

Data at a Glance

Description

This dataset contains estimated chlorophyll-a and particulate organic carbon concentration data from the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) during the IOP1 campaign conducted approximately 300 km offshore of San Francisco during 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. The Portable Remote Imaging Spectrometer (PRISM) is an airborne instrument package that is mounted on the GIII aircraft which flies long duration detailed surveys of the field domain during deployments. PRISM contains a pushbroom imaging spectrometer operating at near-UV to near-IR wavelengths (350-1050 nm), which produced high temporal resolution and resolve spatial features as small as 30 cm. PRISM also has a two-channel spot radiometer at short-wave infrared (SWIR) band (1240 nm and 1640 nm), that is co-aligned with the spectrometer and is used to provide accurate atmospheric correction of the ocean color measurements. Level 2 chlorophyll-a data are available in netCDF format.

Product Summary

Platforms

G-III

Instruments

PRISM

Spatial Extent

N: 40 S: 35 E: -122 W: -130

Coordinate System

CARTESIAN

Granule Spatial Representation

CARTESIAN

Temporal Extent

2022-10-19 to 2023-05-10

Data Partner

Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)

Concept ID

C2727960248-POCLOUD

Data State

COMPLETE

Number of Files/Granules

172

Processing Level

Science Keywords

Chlorophyll

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.

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Select a Citation Style:

S-MODE. (2023). S-MODE PRISM Level 2 Water Surface Chlorophyll-a Version 1 [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/SMODE-PRSM2-CHLA Date Accessed: 2025-12-14

Documents

DATA CITATION GUIDELINES

Data Use and Citation Guidelines

GENERAL DOCUMENTATION

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 Sort descending	Description	Units	Data Type	Fill Value	Valid Range	Scale Factor
chlorophyll_a	Chlorophyll A	ug L-1	float	-9999	0 to 5	1
glt_x	Geometric Lookup Table sample	1	double	N/A	N/A	1
glt_y	Geometric Lookup Table line	1	double	N/A	N/A	1
latitude	latitude	degrees_north	double	N/A	N/A	1
longitude	longitude	degrees_east	double	N/A	N/A	1
POC	particulate organic carbon	ug L-1	float	-9999	0 to 5	1
time	Time	days since 1950-01-01	double	N/A	N/A	1