Dr. Xiaoguang Xu, Joint Center for Earth Systems technology.
HARP2 is a contributed instrument from the UMBC Earth and Space Institute to the PACE mission. HARP2 is a copy of the HARP CubeSat polarimeter payload adapted for flying and collecting data from a large spacecraft platform like PACE. HARP2 on PACE will have the capability to collect global data in two days, while the HARP CubeSat payload have important limitations in terms of amount of data that can be collected and downlinked to the ground, The figure bellow compares the main differences between HARP2 and HARP CubeSat.