T1.1 - Data coordination, inventory and access to national archives [Months: 1-36]
Data rescue: URV will lead the effort to identify the data-sparse regions and periods (pre- and post- 1950s),
coordinating with relevant stakeholders, accessing the relevant data sources planning the digitization tasks (about
3.7M hourly observations) and the reformatting of known data sources not yet in the MARS archive with the main
focus on the recovery and digitization of sub-daily observations
NMA-RO will take part in rescuing synoptic-scale observations (~ 300K new hourly values to be provided to the
MARS archive) over Romania and the Balkans countries and for both the post-1950 periods to fill in gaps with
new 6-hourly observations and the pre-1950 period to extend back in time for key climate series for main ECVs
and for the same European sub-region.
NMA-RO will also continue updating at near real time the E-OBS dataset with Romanian data (about 80K values
of daily temperature and precipitation observations).

T1.2 - High-quality synoptic-scale data development [Months: 1-36]
UData development URV and UEA will lead this task and work together to implement new QC and homogenisation
strategies to adjust time-series at the sub-daily scale following a double strategy. While URV will be in charge of the
testing of the individual recovered/digitized synoptical time-series with the new QC and homogenisation strategies
implemented under UERRA, the UEA will ensure network consistency and data encoding.

T1.3 - Gridded and Observational Datasets [Months: 1-36]
Observation gridding: KNMI and UEA will lead on the proposed improvements to the E-OBS dataset assessing
whether the basic gridding procedure can be improved (particularly for extremes) and the potential impact on the
grids of the large variations in station density across Europe.
EDI will contribute to the improvement of gridding procedures for E-OBS and estimation of uncertainties (based
on the experience gained by EDI with stochastic simulation).
ECMWF and KNMI will include the E-OBS station database and other digitized data in MARS.