Since the beginning of the campaign, 331 dropsondes have been released, either for IASI (or IASI + AIRS) coincidence, or colocation with Concordia station, or over the Weddell Sea.
Here follows the number of dropsondes released for each driftsonde system:
MSD01 41
MSD02 46
MSD03 13
MSD04 52
MSD05 50
MSD06 40
MSD07 41
MSD09 28
MSD10 8
MSD11 7
MSD13 5
Some driftsondes are already depleted, whereas newcomers have only dropped a few times.
The graph below shows the number of dropsondes released each day.