D48 LAQ assimilation results.
This is part of work-package 7100 and 7200 the purpose of which is
of the skills of different numerical weather prediction models when
using GPS data. The work in the workpackages includes:
the impact of ground-based GPS data
on NWP data assimilation and forecast systems
assimilation methods used by TOUGH participants
Carry out extensive, full-scale data assimilation
statistical methods will be used for objective verification. Analyses
forecasts with and without the ground-based GPS data will be verified
observations and analyses. This includes:
capability for assimilation of GPS data, including implementation of
necessary bias correction scheme (based on results from WP 6000)
assimilation in demonstration mode for a period of at least one month.
studies of regional interest for detailed study. Cases will be biased
towards more extreme events and/or where current operational models
guidance on an event.
Verification using both
objective and subjective verification methods.
appraisal of the
different assimilation methods
Deliverable. The results of the impact studies and model
development done at LAQ can be found in the articles:
Facani, C., R. Ferritti, C. Dimini, F.-S. Marzano, A. Memmo, L.
Cucurull: Simulation of deep
concection in the Mediterranean area using 3DVar of conventional and
non-conventional data. Advances in
Geosciences, vol 2, p. 65, 2005.
Ferretti, R, C. Faccani, M. Francia and L. Cucurull: Operational evaluation of the assimilation
of a network of ground based GPS PW and ZTD into the weather forecast. Manuscript
submitted to Mon Wea. Rev. 2006.