Articles | Volume 2
Adv. Geosci., 2, 73–79, 2005
Adv. Geosci., 2, 73–79, 2005

  29 Mar 2005

29 Mar 2005

Impact of a high density GPS network on the operational forecast

C. Faccani1, R. Ferretti1,2, R. Pacione3, T. Paolucci1, F. Vespe4, and L. Cucurull5 C. Faccani et al.
  • 1Department of Physics, University of L’Aquila, Italy
  • 2CETEMPS, University of L’Aquila, Italy
  • 3Telespazio SpA, Centro di Geodesia Spaziale, Matera, Italy
  • 4ASI, Centro di Geodesia Spaziale, Matera, Italy
  • 5COSMIC Project/JCSDA Suitland, MD, USA

Abstract. Global Positioning System Zenith Total Delay (GPS ZTD) can provide information about the water vapour in atmosphere. Its assimilation into the analysis used to initialize a model can then improve the weather forecast, giving the right amount of moisture and reducing the model spinup. In the last year, an high density GPS network has been created on the Basilicata region (south of Italy) by the Italian Space Agency in the framework of a national project named MAGIC2. MAGIC2 is the Italian follow on of the EC project MAGIC has. Daily operational data assimilation experiments are performed since December 2003. The results show that the assimilation of GPS ZTD improves the forecast especially during the transition from winter to spring even if a no very high model resolution (9km) is used.