Preprints
https://doi.org/10.5194/essd-2020-346
https://doi.org/10.5194/essd-2020-346

  12 Jan 2021

12 Jan 2021

Review status: this preprint is currently under review for the journal ESSD.

A high-resolution gridded dataset of daily temperature and precipitation records (1980–2018) for Trentino – South Tyrol (north-eastern Italian Alps)

Alice Crespi1, Michael Matiu1, Giacomo Bertoldi2, Marcello Petitta1,3, and Marc Zebisch1 Alice Crespi et al.
  • 1Institute for Earth Observation, Eurac Research, Bolzano, 39100, Italy
  • 2Institute for Alpine Environment, Eurac Research, Bolzano, 39100, Italy
  • 3SSPT-MET-CLIM, ENEA, Rome, 00196, Italy

Abstract. A high-resolution gridded dataset of daily mean temperature and precipitation series spanning the period 1980ndash;2018 was built for Trentino ndash; South Tyrol, a mountainous region in north-eastern Italy, starting from an archive of observation series from more than 200 meteorological stations, covering the regional domain and surrounding countries. The original station data underwent a processing chain including quality and consistency checks, homogeneity tests, with the homogenization of the most relevant breaks in the series, and a filling procedure of daily gaps aiming at maximizing the data availability. Using the processed database, an anomaly-based interpolation scheme was applied to project the daily station observations of mean temperature and precipitation onto a regular grid of 250 m × 250 m resolution. The accuracy of the resulting dataset was evaluated by the leave-one-out station cross-validation. Averaged over all sites, interpolated daily temperature and precipitation show no bias, with a mean absolute error (MAE) of about 1.5 °C and 1.1 mm and a mean correlation of 0.97 and 0.91, respectively. The obtained daily fields were used to discuss the spatial representation of selected past events and the distribution of the main climatological features over the region, which shows the role of the mountainous terrain in defining the temperature and precipitation gradients. In addition, the suitability of the dataset to be combined with other high-resolution products was evaluated through a comparison of the gridded observations with snow-cover maps from remote sensing observations. The presented dataset provides an accurate insight on the spatio-temporal distribution of temperature and precipitation over the mountainous terrain of Trentino – South Tyrol and a valuable support for local and regional applications. The dataset is publicly available at https://www.pangaea.de/tok/2bea918566a8c18a728e098858856cd1fcc8dbe4, Crespi et al. (2020).

Alice Crespi et al.

Status: open (until 09 Mar 2021)

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Alice Crespi et al.

Data sets

High-resolution daily series (1980-2018) and monthly climatologies (1981-2010) of mean temperature and precipitation for Trentino - South Tyrol (north-eastern Italian Alps) Alice Crespi, Michael Matiu, Giacomo Bertoldi, Marcello Petitta, and Marc Zebisch https://www.pangaea.de/tok/2bea918566a8c18a728e098858856cd1fcc8dbe4

Alice Crespi et al.

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