Download Jason-3 data using python

Download Jason-3 GPS based orbit and SSHA OGDR

This product is near real time with latency of 5-6 hours with GPS based orbit rather than doris based orbit. It is available through earthdata

To install the package,

Run

pip install jason3-downloader

Then, to run the CLI application,

jason3 --username your_username --password your_password --temporal "2022-01-01T10:00:00Z,2022-01-02T12:00:00Z" --bbox "0,-5,5,0"

Note Only username and password are mandatory, rest all parameters are set to a default (look in the code to see their value)

To know all the options available

jason3 --help

Code adapted from modis-tools

About Jason-3 Products

Jason-3 has 3 family of products and 8 minor products

3 family of products are

1. OGDR
2. IGDR
3. GDR

Each family has minor products

• OGDR -> OGDR SSHA and native OGDR
• IGDR -> IGDR SSHA and IGDR and S-IGDR
• GDR -> GDR SSHA and GDR and S-GDR

To know more about them refer here

To download these products, we can use FTP server from NCEI NOAA

Note We currently do not have any other way (via https or s3) to download these products. The one available on earthdata is OGDR GPS based product.

Using python, you can download using the jason3_ftp_script.py