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Overview of GNSS & GNSS-Met situation in France

COST Action ES1206 - GNSS4SWEC Advanced GNSS Tropospheric Products for monitoring Severe Weather Events and Climate. Overview of GNSS & GNSS-Met situation in France. Reykjavik, 10 March 2016. O. Bock (IGN). Outline Operational Services GNSS networks & data analysis centers Research projects

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Overview of GNSS & GNSS-Met situation in France

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  1. COST Action ES1206 - GNSS4SWEC Advanced GNSS Tropospheric Products for monitoring Severe Weather Events and Climate Overview of GNSS & GNSS-Met situation in France Reykjavik, 10 March 2016 O. Bock (IGN) • Outline • Operational Services • GNSS networks & data analysis centers • Research projects • HYMEX, REMEMBER, VEGA, AMMA… 1

  2. Operational processing of GNSS (tropo) data • IGN/SGN operationalactivities • RGP (permanent GNSS network – France; 440 stations) • National data center => rinex files (1h/1s, 24h/30s) • NRT + dailyrapid (D+1) products (BERN5.2, GPS only, recent tests with GLONASS) • => E-GVAP AC (sgn_, sgn1, sgnc) = 6 proc. • EPN & IGS • IGS data center (igs.ign.fr) => rinex files & IGS products • Post-processingusing final IGS products => EUREF AC = 3 proc. • IDS (Int. DORIS Service) • DORIS data and products center => IDS AC (ign) • IGN/LAREG operationalactivities • Routine post-processing (GIPSY) of GNSS data for: • ROSEA (network of observatories for Atmospheric Water Monitoring) • Long termresearchobserving programmes (AMMA, HYMEX) • AERIS: NEW national data center for the atmosphereand climate research • CNRS operationalactivities • RENAG (national research GNSS network; subset of RGP + 183 stations) • National data center and post-processingproducts (GAMIT)

  3. RGP (Reseau GNSS Permanent) RENAG (REseau NAtional GPS) EUREF - sgn E-GVAP - sgn

  4. March 2016 : 440 stations Guadeloupe La Réunion Saint Pierre et Miquelon Martinique Mayotte French Guiana

  5. GNSS in research projects • COST GNSS4SWEC • WG1 & WG3 (studies on GNSS processing, assessment of long ZTD/IWV time series, climate model validation) => IGN & ENSTA • WG1 BENCH & tomo (U. Le Mans) • HyMeX (Hydrological cycle in the Mediterranean Experiment, INSU-CNRS, PIs: V. Ducrocq, Meteo-France, and Ph. Drobinksi, CNRS) • Assimilate repro GPS ZTD in AROME model (HyMeX reanalysis 2) • Study Heavy Precip Events during SOP1 (fall 2012) • REMEMBER & Med-CORDEX (REgional climate system ModEls in the Mediterranean, ANR, PIs: Ph. Drobinski and S. Bastin, CNRS) • Evaluate regional (Mediterranean) climate models simulations • VEGA(Water vapour, GNSS & climate, INSU-CNRS, PI: O. Bock) • Produce & validate long time series of GNSS & DORIS IWV data • Evaluate satellite and radiosonde IWV data • Study water cycle & moist processes globally and in polar regions • AMMA& Humidity-Sahara (West African Monsoon and Sahara) • Study water cycle & moist processes (Saharan Heat-Low dynamics) 5

  6. reprocessed E-GVAP SGN IGE ASI 773 stations (3 Analysis Centres) 1046 stations (25 networks) reprocessed by LAREG & e-Geos with GIPSY s/w Period 1 Sep 2012 – 31 Mar 2013 6

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