Short and long-term experimental Cal/Val campaigns at OPAR premises, using OPAR’s infrastructure and user’s own instrumentation. Examples of experimental campaigns that have already taken place concern ADM-Aeolus (wind) and Earth Care (aerosols). The infrastructure at OPAR combines ACTRIS compliant aerosol remote sensing, trace gases remote sensing, cloud remote sensing and aerosol in-situ instrumentation (ACTRIS & ICOS), along with complementary measurements for meteorological parameters and radiation (check OPAR equipment list). Additional instruments from the users can be accommodated indoor or outdoor, as needed. Overflights with probe balloons, drones and small research aircrafts possible.

In addition to Service 1 (see previous table), the service includes:

• Support from the technical staff to install and operate the instruments

• Support from the scientific staff to set the measurements schedule coincident with satellite overpasses

• Support from the scientific staff to collect, process and analyze the data.

AVAILABILITY PERIOD: All year round except July 14th to August 15th, and December 19th to January 19th