Category: Home Slider, AODN, SRS
Accessing IMOS satellite imagery just got easier
The new "Accessing IMOS Satellite Data and Converting into CSV Format Report" provides a simple, easy-to-use process, using the open source tool Panoply, for visualising IMOS satellite imagery and extracting small subsets of data to .csv files.
Several satellite datasets are available from the Integrated Marine Observing System (IMOS) portal. Data include sea surface temperature, chlorophyll-a concentration and sea surface height and derived geostrophic currents.
These data can be downloaded from the IMOS portal in the form of NetCDF (network Common Data Form) files. NetCDF is a file format for storing multidimensional scientific data (variables) such as temperature, and current speed and direction, and each of these variables can be displayed through a dimension (such as time).
This format is commonly used in oceanography and meteorology and widely used in applications such as MATLAB. Panoply is a JAVA application developed by NASA that can be used for viewing the metadata content of NetCDF files, plotting the data and capturing the image, and exporting the data into a csv or txt file.
Dr Roger Proctor, director of the AODN believes the new guide, developed by Ana Redondo Rodriguez of the South Australian Research and Development Institute, for use in the Great Australian Bight Research Program, will benefit anyone wishing to access and utilise satellite imagery.
“In writing this guide, we were aiming to simplify the process of getting hold of, and using these datasets.
“Hopefully more people will access these data and their interpretation of the data will lead to results that will be of use scientifically and ultimately to industry and society,” said Proctor.
The guide includes:
- A list of available IMOS satellite data and summary of the main characteristics
- A ‘How to’ guide for downloading satellite data from the IMOS portal
- A ‘How to’ guide for using Panoply to export NetCDF data into a csv file
New products, including a number of ocean colour parameters and temporal averages, will be added to the portal as they become available.
The guide is available via the IMOS Data Tools page.