Project leader: Dr. D. Camuffo.
This series is one of the longest series in the world, is unbroken, unexploited and includes: barometric pressure, air temperature, rainfall, wind direction and force, cloud cover and other visual observations. The first aim was to critically evaluate the limits of confidence of this long meteorological series and their degree of homogeneity to analyse this series after having improved its reliability.
The systematic errors (e.g. calibration, exposure, relocation, timing of observation, method of computing the average daily values) were determined as well as the apparent climate changes common to all the long time series, due e.g. to changes in measuring methodologies originated by the adoption of new conventions / standards / international recommendations (e.g. change of calibration procedures; change of thermometric liquid; adoption of meteorological screens; change of the number and time of daily observations; changes of the reference time: apparent solar time / mean solar time, i.e. clock, which differs by ±16 min from the previous one / West European Time).
The Unit is now performing the mathematical analysis of the series and drawing the climatic interpretation of the results (see Contracts and Cooperations).