Chief Officer: Giorgiana De Franceschi

Deputy Chief Officer: Nicolas Bergeot

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Welcome to GRAPE

GRAPE (GNSS Research and Application for Polar Environment) is a joint GeoSciences and Physical Sciences Expert Group lasting from 2012 to 2020. 

The International Polar Year (IPY) and International Heliophysical Year (IHY) initiatives left an important heritage in terms of data sharing, expertise exchange and increasing awareness of the current scientific capabilities. In particular, the GWSWF SCAR Action Group took advantage of the Interhemispheric Conjugacy Effects in Solar-Terrestrial and Aeronomy Research (ICESTAR) and the Polar Earth Observing Network (POLENET) experiences that lead to creation of working groups on specific themes such as the use of geodetic data to study weather and space weather events. The multidisciplinary approach of IPY is the key in overcoming relevant difficulties, above all, the poor coverage of Antarctica. GRAPE Expert group intend to continue to follow this route, intensifying the efforts to build a robust network of collaborations in order to answer a variety of space weather related needs through ad hoc data sharing and model development.

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Main Objectives

  • Create and maintain distributed networks of specialized GPS/GNSS Ionospheric Scintillation and TEC Monitors particularly at high latitudes.
  • Identify and quantify mechanisms that cause scintillation and control interhemispheric differences, asymmetries and commonalities in scintillation occurrence and intensity as a result of the geospace environment conditions.
  • Develop ionospheric scintillation climatology, tracking and mitigation models to improve prediction capabilities of space weather.
  • Retrieve tropospheric PWV for input to weather forecast models and to develop regional PWV climatology for atmospheric sensing in remote areas.

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Latest News

We regret to inform you that SCAR COMNAP 2020 is cancelled (read more on SCAR COMNAP 2020 site,                The sessions 1 and 11  of GRAPE interest that were planned  received a wide consensum with 36 and 51 abstracts, respectively,  from all over the world. We thank all the authors for their precious contributions. We are trying to organize a video...

Call for Abstracts

The Call for Abstracts has been issued for: 1) the XXXVI SCAR (Hobart, Tasmania, Australia, 31 July - 11 August 2020), 2) the XXXIII URSI GASS (Rome, Italy, 29 August - 5 September 2020). You  are solicited to submit your contributions to the GRAPE related sessions. Financial support is available for 2 EARLY CAREER RESEARCHERS (within 35 years old)  submitting and presenting a paper to the XXXVI SCAR. ...


A youtube video about the Research activities at EACF, the Brazilian Antarctic Station (Estação Antártica Brasileira Comandante Ferraz) is available. It is in portuguese, with legend in English. Watch the video!