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ROHP-PAZ

mission&instruments ground segment

Sketch of the ROPH-PAZ Ground Segment: the RO data are telemetered down to NOAA's Fairbanks Station, Alaska, once per orbit (~95 minutes). They are then sent to UCAR's CDAAC where the level-1 and upper levels of processing are produced. Level-1 data are quickly disseminated to all the National Meteorological Services using WMO's GTS. CDAAC also maintains a data server and archive. The raw (polarimetric) data are sent to ICE-CSIC/IEEC, where precipitation analysis are conducted, and both raw polarimetric and processed products are made available for research.
Sketch of the ROPH-PAZ Ground Segment: the RO data are telemetered down to NOAA's Fairbanks Station, Alaska, once per orbit (~95 minutes). They are then sent to UCAR's CDAAC where the level-1 and upper levels of processing are produced. Level-1 data are quickly disseminated to all the National Meteorological Services using WMO's GTS. CDAAC also maintains a data server and archive. The raw (polarimetric) data are sent to ICE-CSIC/IEEC, where precipitation analysis are conducted, and both raw polarimetric and processed products are made available for research.

The Ground Segment of the original PAZ mission (SAR instrument solely) did not require any near-real time capabilities. It thus planned a down-link once a day at the PAZ ground station.

Nevertheless, the Radio-Occultation data needs little latency in order to be ingested in the global Numerical Weather Prediction Models (WPM): the time span between a RO event and the arrival of its data at the meteorological centers must be shorter than 3 hours.

An agreement with the North American National Oceanic and Atmospheric Administration (NOAA) will permit the distribution of the RO data in near-real time (NRT). The RO data will be telemetered down to NOAA's Fairbanks station, Alaska, once per orbit (~95 minutes), from where they will follow the processing chain of NOAA's COSMIC RO constellation data: the raw observables are sent to the COSMIC Data Analysis and Archival Center (CDAAC), a center which belongs to the University Corporation for Atmospheric Research (UCAR), where they will be processed into level 1 and 2. Level-1 data are quickly disseminated through the Global Telecommunications System (GTS) of the World Meteorologic Organization (WMO). This system broadcasts meteorological data and alerts in a timely and reliable way to all National Meteorological Services and other WMO members. CDAAC will also maintain a data server and archive with data at level-1 and upper processing levels.

The raw data, with polarimetric information, will be forwarded to the ICE-CSIC/IEEC, from where it will be accessible for research through an Internet data server and archive. This server will also deliver Precipitation information obtained with PAZ polarimetric RO observations.