http://grace.jpl.nasa.gov/data ...

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http://grace.jpl.nasa.gov/data/ YOU CAN USE THIS SITE, and download whatever you need just be sure that the resolution of the imagery data is good enough for your work, fo rmore informTION CHECK THIS SITE TOO IT CAN BE INFORMATIVE FOR YOU TOO. 

https://www.researchgate.net/post/How_can_I_download_GRACE_data_for_eastern_India_and_in_which_software_can_this_data_be_easily_interpreted