Be cautious when downloading .rar files from unknown sources, especially if they are presented as "papers."

Research papers are almost always distributed as .pdf files.

"ls" often stands for "Land Surface," "Large Scale," or a specific satellite sensor (like Landsat), followed by a date (June 10, 2017). Potential "Paper" Connections

Large datasets for land surface temperature or satellite imagery are often archived this way.

This naming convention is frequently used on file-sharing platforms, forums, or private repositories rather than official academic journals.