Preprints
https://doi.org/10.5194/egusphere-2024-1056
https://doi.org/10.5194/egusphere-2024-1056
05 Jun 2024
 | 05 Jun 2024

Historical snowfall measurements in the Central and Southern Apennine Mountains: climatology, variability and trend

Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon

Abstract. This work presents an analysis of historical snow precipitation data collected in the period 1951–2001 in Central and Southern Apennines (Italy), an area scarcely investigated so far. To pursue this aim, we used the monthly observations of the snow cover duration, number of days with snow and total height of new snow collected at 129 stations located between 288 and 1750 m a.s.l.. Such data have been manually digitized from the Hydrological Yearbooks of the Italian National Hydrological and Mareographic Service. The available dataset has been primarily analyzed to build a reference climatology (related to 1971–2000 period) for the considered Apennine region. More specifically, using a methodology based on Principal Component Analysis and k-means clustering, we have identified different modes of spatial variability, mainly depending from the elevation, which reflect different climatic zones. Subsequently, focusing on the number of days with snow and snow cover duration on the ground, we have carried out a linear trend analysis, employing the Theil-Sen estimator and the Mann-Kendall test. An overall negative tendency has been found for both variables. For clusters including only stations above 1000 m a.s.l., a significant (at 95 % confidence level) decreasing trend has been found in winter season (i.e. from December to February): −3.2 [−6.0 to 0.0] days/10 years for snow cover duration and −1.6 [−2.5 to −0.6] days/10 years for number of days with snow. Moreover, in all considered seasons, a clear direct relationship between trend magnitude and elevation has emerged. In addition, using a cross wavelet analysis, we found a close in-phase linkage on decadal time scale between the investigated snow indicators and the Eastern Mediterranean Pattern. For both snow cover duration and number of days with snow, such connection appears to be more relevant in full (i.e. from November to April) and in late (i.e. from February to April) seasons.

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Journal article(s) based on this preprint

05 Feb 2025
Historical snow measurements in the central and southern Apennine Mountains: climatology, variability, and trend
Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon
The Cryosphere, 19, 565–595, https://doi.org/10.5194/tc-19-565-2025,https://doi.org/10.5194/tc-19-565-2025, 2025
Short summary
Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2024-1056', Danilo Godone, 05 Jun 2024
    • AC1: 'Reply on CC1', Vincenzo Capozzi, 06 Jun 2024
  • RC1: 'Comment on egusphere-2024-1056', Anonymous Referee #1, 05 Jul 2024
    • AC2: 'Reply on RC1', Vincenzo Capozzi, 27 Aug 2024
  • RC2: 'Comment on egusphere-2024-1056', Anonymous Referee #2, 08 Oct 2024
    • AC3: 'Reply on RC2', Vincenzo Capozzi, 15 Oct 2024

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2024-1056', Danilo Godone, 05 Jun 2024
    • AC1: 'Reply on CC1', Vincenzo Capozzi, 06 Jun 2024
  • RC1: 'Comment on egusphere-2024-1056', Anonymous Referee #1, 05 Jul 2024
    • AC2: 'Reply on RC1', Vincenzo Capozzi, 27 Aug 2024
  • RC2: 'Comment on egusphere-2024-1056', Anonymous Referee #2, 08 Oct 2024
    • AC3: 'Reply on RC2', Vincenzo Capozzi, 15 Oct 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to revisions (further review by editor and referees) (11 Nov 2024) by Melody Sandells
AR by Vincenzo Capozzi on behalf of the Authors (19 Nov 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (11 Dec 2024) by Melody Sandells
AR by Vincenzo Capozzi on behalf of the Authors (13 Dec 2024)  Manuscript 

Journal article(s) based on this preprint

05 Feb 2025
Historical snow measurements in the central and southern Apennine Mountains: climatology, variability, and trend
Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon
The Cryosphere, 19, 565–595, https://doi.org/10.5194/tc-19-565-2025,https://doi.org/10.5194/tc-19-565-2025, 2025
Short summary
Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon
Vincenzo Capozzi, Francesco Serrapica, Armando Rocco, Clizia Annella, and Giorgio Budillon

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Short summary
This study offers a “journey through time” to discover historical information about snow precipitation in the Italian Apennines. In this area, in the second half of past century, a gradual decline in snow persistence on the ground as well as in the frequency of occurrence of snowfall events has been observed, especially in sites located above 1000 m a.s.l.. The old data rescued in this study strongly enhances our knowledge about past snowfall variability and climate in the Mediterranean area.
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