Experimental GloTEC

The current operational GloTEC CONOPS uses a 10-minute cadence, 15-minute latency, and a 10-minute observation window for both ground-based and RO observations, centered on the analysis tag time. The current operational CONOPS with 15-minute latency prevents the usage of most of the RO data due to the data latency. To improve model accuracy through ingesting more RO measurements, the new experimental CONOPS configuration shown on this page retains the 10-minute cadence but uses a 30-minute latency. Ground-based TEC is ingested over a 10-minute window, whereas RO data are ingested over an expanded 30-minute window extending from 20 minutes prior to 10 minutes after the analysis tag time. Two versions of the new experimental CONOPS are shown here. One version assimilates TEC data from ground-based receivers and COSMIC-2 radio occultation TEC data (left column). The other version uses the same ground-based and COSMIC-2 data, and adds the real-time PlanetiQ radio occultation TEC data acquired through NOAA’s Commercial Data Program (right column). The PlanetiQ RO data comes from the satellites GNOMES-4 and GNOMES-5. Both satellites are in sun-synchronous orbit. GNOMES-4 orbits at 10LT and 22LT. GNOMES-5 orbits at 11LT and 23 LT. PlanetiQ data provides polar coverage in these specific local time sectors.

Contact tzu-wei.fang@noaa.gov with questions or feedback

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