Why I can download the “Initial Data Retrieval” in ASCII in some Giovanni instances?
Downloading large volumes of high-resolution ASCII data has at times created a system performance problem, forcing us to disable this capability. Users can still, however, download ASCII data for the visualization and analysis results. Depending on the size of the region a user selects, the magic number is an array size of 518,400. This corresponds to about half the global data at 0.25° x 0.25° resolution.