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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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!


In 2020 two exciting international Conferences are expected for which scientific sessions dealing with the "Geospace, Space Weather and Polar Environment" have been planned. The first Conference is the XXXVI SCAR, that will be held in Hobart, Tasmania, Australia, from 31 July to 11 August 2020. The SCAR Conference will finish just in time to give you the opportunity to attend XXXIII URSI GASS (General Assembly and Scientific Symposium), Rome, Italy, 29 August-5 September 2020.  The call...

EGU General Assembly 2019

Announcement: EGU GENERAL ASSEMBLY 2019, 7 - 12 April 2019, Vienna, Austria. A session deals with the middle and upper atmosphere on the planetary scale. Link...

Polar Upper Atmosphere: from Science to Operational Issues

The 2018 school "Polar Upper Atmosphere: from Science to Operational Issues", has been held at the International School of Space Science in L'Aquila, Italy, on 17-21 September 2018. A short note on the school is available