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Weather, Ocean, and Tuna biomass time-series from 2005-2019 in the Western Indian Ocean (WIO) region (NCEI Accession 0306675)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 05:08 AM | Dataset Last Updated: July 31, 2025 at 12:00 AM
This dataset contains spatial and temporal data used to analyze and project the distribution of skipjack tuna (Katsuwonus pelamis) in the Western Indian Ocean under varying climate change scenarios. Historical catch data (2005–2019) were obtained from the Indian Ocean Tuna Commission (IOTC), and environmental variables were sourced from the Copernicus Marine Service (MyOcean). Variables include sea surface temperature (SST), sea surface salinity (SSS), mixed layer depth (MLD), sea surface height (SSH), net primary productivity (NPP), chlorophyll-a concentration (CHL), as well as geographic coordinates and month. A Generalized Additive Model (GAM) framework with k-fold cross-validation was applied to determine the key drivers of skipjack tuna distribution during the historical period. Two text files contain the catch and environmental data time series that were compiled and used to create the 3 JPEGs provided. References to datasets and methods are provided in the reference section.

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0306675 ALTIMETRY - SEA SURFACE HEIGHT biological data CHLOROPHYLL CURRENT SPEED CURRENT SPEED - EAST/WEST COMPONENT (U) CURRENT SPEED - NORTH/SOUTH COMPONENT (V) FISHERY SURVEY - CATCH MEASUREMENTS - GENERAL

Complete Metadata
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description This dataset contains spatial and temporal data used to analyze and project the distribution of skipjack tuna (Katsuwonus pelamis) in the Western Indian Ocean under varying climate change scenarios. Historical catch data (2005–2019) were obtained from the Indian Ocean Tuna Commission (IOTC), and environmental variables were sourced from the Copernicus Marine Service (MyOcean). Variables include sea surface temperature (SST), sea surface salinity (SSS), mixed layer depth (MLD), sea surface height (SSH), net primary productivity (NPP), chlorophyll-a concentration (CHL), as well as geographic coordinates and month. A Generalized Additive Model (GAM) framework with k-fold cross-validation was applied to determine the key drivers of skipjack tuna distribution during the historical period. Two text files contain the catch and environmental data time series that were compiled and used to create the 3 JPEGs provided. References to datasets and methods are provided in the reference section.
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0306675.xml
issued 2025-07-28T00:00:00.000+00:00
keyword 
[
  "0306675",
  "ALTIMETRY - SEA SURFACE HEIGHT",
  "biological data",
  "CHLOROPHYLL",
  "CURRENT SPEED",
  "CURRENT SPEED - EAST/WEST COMPONENT (U)",
  "CURRENT SPEED - NORTH/SOUTH COMPONENT (V)",
  "FISHERY SURVEY - CATCH MEASUREMENTS - GENERAL",
  "MIXED LAYER DEPTH",
  "OXYGEN",
  "pH",
  "PHYTOPLANKTON",
  "PRIMARY PRODUCTIVITY - DISSOLVED ORGANIC MATTER",
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  "SEA SURFACE TEMPERATURE",
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  "biological",
  "chemical",
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  "model output",
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  "satellite data",
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  "oceanography",
  "EARTH SCIENCE > AGRICULTURE > AGRICULTURAL AQUATIC SCIENCES > FISHERIES",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON",
  "EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PRIMARY PRODUCTION",
  "EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS",
  "EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN MIXED LAYER",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT",
  "Bottom Sea Water Temperature",
  "Eastward Sea Water Velocity",
  "Northward Sea Water Velocity",
  "Skipjack Catches",
  "ALTIMETERS > ALTIMETERS",
  "Purse saine fishing gear",
  "Copernicus Marine Services",
  "Indian Ocean Tuna Commission",
  "OCEAN > INDIAN OCEAN",
  "MEXPML"
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landingPage https://www.ncei.noaa.gov/contact
language 
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license https://creativecommons.org/publicdomain/zero/1.0/
modified 2025-07-31T00:00:00.000+00:00
publisher 
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references 
[
  "https://doi.org/10.48670/moi-00019",
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rights otherRestrictions
spatial 80.0,-14.0,38.0,14.0
temporal 2005-01-01T00:00:00+00:00/2019-12-12T00:00:00+00:00
theme 
[
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]
title Weather, Ocean, and Tuna biomass time-series from 2005-2019 in the Western Indian Ocean (WIO) region (NCEI Accession 0306675)

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