The travelling reference spectrometer TRSP implemented in the traceability concept developed for the Network for Detection of Mesospheric Change (NDMC) within the EMRP project ENV53 MetEOC2 (D2.2.1 to D2.2.13) has reached one year of simultaneously successful operation alongside with an existing Ground-based infrared P-branch spectrometer (GRIPS) at the Oberpfaffenhofen NDMC site to determine Mesosphere’s temperature traceable to the SI.

Travelling Reference Spectrometer (TRSP) alongside with Ground-based infrared P-branch spectrometer (GRIPS) 6 at the Oberpfaffenhofen NDMC site
Travelling Reference Spectrometer (TRSP) alongside with Ground-based infrared P-branch spectrometer (GRIPS) 6 at the Oberpfaffenhofen NDMC site

Meanwhile, several GRIPS instruments from DLR are improved according to the concept developed in MetEOC2 for the TRSP to minimise thermal drifts and straylight.