There’s also KaBOOM, or Ka-Band Objects Observation and Monitoring, that also tracks near-earth objects that could go KaBOOM on Earth.

OMG stands for Oceans Melting Greenland, per NASA:

This summer, a refitted fishing boat is mapping the seafloor around Greenland as the first step in a six-year research program to document the loss of ice from the world’s largest island. NASA’s Oceans Melting Greenland (OMG) field campaign is gathering data that will help scientists both to understand how the oceans are joining with the atmosphere in melting the vast ice sheet and to predict the extent and timing of the resulting sea level rise.

The idea is to track, comprehensively, Greenland’s melting glaciers.