CoastWatch Primary Productivity Project
  • Algorithm and Data
  • Statistical Analysis
  • User Resources

On this page

  • Code Gallery
    • Customizable Regional Analysis Tutorials
      • Unbiased Relative Difference Analysis of the Legacy and Interim Products
      • Absolute Relative Difference Analysis of the Legacy and Interim Products
      • Contingency Tables: Assessing the Similarity Between Two Primary Productivity Products
    • Full Statistical Analysis Tutorials
      • Primary Productivity Unbiased Relative Difference Analysis
      • Primary Productivity Absolute Relative Difference Analysis
      • Calculating Trends and P-Values for Legacy and Interim NetPP Products
  • Satellite Courses
  • ERDDAP Server
  • Download Interim Product Data
  • Download Algorithm Input Data
  • Download Statistical Analysis Data Products

User Resources

Code Gallery

Explore tutorials designed to help users analyze and compare legacy and interim primary productivity products using Python or R.

Customizable Regional Analysis Tutorials

Unbiased Relative Difference Analysis of the Legacy and Interim Products

Calculate the mean unbiased relative difference (\(\psi\)) between the legacy and interim products for a user-specified region.

View in Github

Absolute Relative Difference Analysis of the Legacy and Interim Products

Calculate the absolute relative difference (\(\Delta\)) between the legacy and interim products for a user-specified region.

View in Github

Contingency Tables: Assessing the Similarity Between Two Primary Productivity Products

Construct a contingency matrix to compare the trends between the legacy and interim products for a user-specified region.

View in Github

Full Statistical Analysis Tutorials

Primary Productivity Unbiased Relative Difference Analysis

Calculate the mean unbiased relative difference (\(\psi\)) of the interim VIIRS netPP and legacy MODIS netPP products for each month from the time series shared between the two sensors.

View in Github

Primary Productivity Absolute Relative Difference Analysis

Calculate the mean absolute relative difference (\(\Delta\)) of the interim VIIRS netPP product and legacy MODIS netPP product for each month from a time series shared between the two sensors.

View in Github

Calculating Trends and P-Values for Legacy and Interim NetPP Products

Generate trends for satellite-derived hourly means of legacy or interim primary productivity products.

View in Github

Satellite Courses

CoastWatch hosts satellite training opportunities in-person and online, providing users with the knowledge and skills to utilize satellite data in their research.

ERDDAP Server

Search satellite data on the CoastWatch West Coast Node ERDDAP data server.

Download Interim Product Data

  • VIIRS SNPP Interim Primary Productivity
    • Daily Composites, Near Real-time
    • Daily Composites, Science Quality
    • Monthly Composites, Science Quality
  • VIIRS NOAA-20 Interim Primary Productivity
    • Daily Composites, Near Real-time
    • Daily Composites, Science Quality
    • Monthly Composites, Science Quality

Download Algorithm Input Data

  • MODIS Aqua netPP
    • Daily Composite
    • Monthly Composite
  • MODIS Aqua input data for legacy netPP
    • MODIS Chlorophyll a
    • MODIS PAR
    • MODIS SST
  • VIIRS SNPP input data for interim netPP
    • VIIRS SNPP Chlorophyll a
    • VIIRS SNPP PAR
    • VIIRS SNPP SST
  • VIIRS NOAA-20 input data for interim netPP
    • VIIRS NOAA20 Chlorophyll a
    • VIIRS NOAA20 PAR
    • VIIRS NOAA20 SST

Download Statistical Analysis Data Products

  • Unbiased Relative Difference (ψ)
    • VIIRS-SNPP - MODIS-Aqua
    • VIIRS-NOAA-20 - MODIS-Aqua
  • Absolute Relative Difference (ψ)
    • VIIRS-SNPP - MODIS-Aqua
    • VIIRS-NOAA-20 - MODIS-Aqua
  • Linear Regression Trends
    • MODIS-Aqua & VIIRS-SNPP
    • MODIS-Aqua & VIIRS-NOAA-20
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Created 2025-01-01 | Last modified 2025-06-04