Modisdatafetcher

This is a library to easily get chlorophyll-a data from MODIS. It downloads various time-steps of chlorophyll data and subsets them according to the user's time and area of interest.

How it works: it gets the names of data files based on the search parameters, accesses the data files via OPeNDAP, subsets the data, and saves the subsetted data in the user's computer.

USAGE

This project is under development, but as of now there are three main fuctionalities:

1. Get the opendap urls for the data you're interested in.
2. Access the data (subsetted, if desired).
3. save the data in your local machine.

Example usage:

import modisdatafetcher

subset_coords = (-70, -25, -15, 20)

dataset_urls = modisdatafetcher.get_opendap_urls(
    date_min = "2021-11-01 00:00:00",
    date_max = "2022-01-01 00:00:00",
    space_res = "4km",  
    time_res = "MO", 
    subset_coords = subset_coords,
    datadir="../../data",
)

lon, lat, chl, time_start, time_end = modisdatafetcher.get_subsetted_dataset(
    subset_coords, 
    dataset_urls
)

modisdatafetcher.save_dataset(
    lon, 
    lat, 
    chl, 
    time_start, 
    time_end,
    space_res= "4km",
    time_res= "MO",
    subset_coords= subset_coords
)

Troubleshooting:

If you're having issues, you might need to get an account at Earthdata. Follow the steps to create an account, log in, and then run the script again.