The phrase "macroscopic level" refers to the big or large-scale view or understanding of something. It means looking at or studying things on a larger scale, considering the whole picture instead of focusing on its small details. Full definition
At the largest, or macroscopic level of reality the same pattern obtains. (religion-online.org)
In essence, we are beginning to link molecular and macroscopic levels of analysis to better understand the diversity and complexity of autism.» (sciencedaily.com)
The author notes that one can not predict the properties of water at a macroscopic level on the basis of knowledge of water molecules. (faith.org.uk)