scholarly journals Semi-automatic derivation of channel network from a high-resolution DTM: the example of an Italian alpine region

2013 ◽  
Vol 46 (1) ◽  
pp. 152-174 ◽  
Author(s):  
Marco Cavalli ◽  
Sebastiano Trevisani ◽  
Beatrice Goldin ◽  
Elena Mion ◽  
Stefano Crema ◽  
...  
Keyword(s):  
High Resolution ◽  
Alpine Region ◽  
Channel Network

A new high resolution absolute temperature grid for the Greater Alpine Region back to 1780

2012 ◽  
Vol 33 (9) ◽  
pp. 2129-2141 ◽  
Author(s):  
Barbara Chimani ◽  
Christoph Matulla ◽  
Reinhard Böhm ◽  
Michael Hofstätter
Keyword(s):  
High Resolution ◽  
Absolute Temperature ◽  
Alpine Region

scholarly journals Development of a longterm dataset of solid/liquid precipitation

2011 ◽  
Vol 6 (1) ◽  
pp. 39-43 ◽  
Author(s):  
B. Chimani ◽  
R. Böhm ◽  
C. Matulla ◽  
M. Ganekind
Keyword(s):  
High Resolution ◽  
20Th Century ◽  
Alpine Region ◽  
Nonlinear Relationship ◽  
Solid Precipitation ◽  
Temperature And Precipitation ◽  
Solid Liquid ◽  
Climate Studies ◽  
Liquid Precipitation

Abstract. Solid precipitation (mainly snow, but snow and ice pellets or hail as well), is an important parameter for climate studies. But as this parameter usually is not available operationally before the second part of the 20th century and nowadays is not reported by automatic stations, information usable for long term climate studies is rare. Therefore a proxy for the fraction of solid precipitation based on a nonlinear relationship between the percentage of solid precipitation and monthly mean temperature was developed for the Greater Alpine Region of Europe and applied to the existing longterm high resolution temperature and precipitation grids (5 arcmin). In this paper the method is introduced and some examples of the resulting datasets available at monthly resolution for 1800–2003 are given.

scholarly journals Validation of a High-Resolution Regional Climate Model for the Alpine Region and Effects of a Subgrid-Scale Topography and Land Use Representation

2010 ◽  
Vol 23 (7) ◽  
pp. 1854-1873 ◽  
Author(s):  
E-S. Im ◽  
E. Coppola ◽  
F. Giorgi ◽  
X. Bi
Keyword(s):  
Land Use ◽  
High Resolution ◽  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
Alpine Region ◽  
Coarse Grid ◽  
Lapse Rate ◽  
Climate Simulation ◽  
Subgrid Scale

Abstract A mosaic-type parameterization of subgrid-scale topography and land use (SubBATS) is applied for a high-resolution regional climate simulation over the Alpine region with a regional climate model (RegCM3). The model coarse-gridcell size in the control simulation is 15 km while the subgridcell size is 3 km. The parameterization requires disaggregation of atmospheric variables from the coarse grid to the subgrid and aggregation of surface fluxes from the subgrid to the coarse grid. Two 10-yr simulations (1983–92) are intercompared, one without (CONT) and one with (SUB) the subgrid scheme. The authors first validate the CONT simulation, showing that it produces good quality temperature and precipitation statistics, showing in particular a good performance compared to previous runs of this region. The subgrid scheme produces much finer detail of temperature and snow distribution following the topographic disaggregation. It also tends to form and melt snow more accurately in response to the heterogeneous characteristics of topography. In particular, validation against station observations shows that the SUB simulation improves the model simulation of the surface hydrologic cycle, in particular snow and runoff, especially at high-elevation sites. Finally, two experiments explore the model sensitivity to different subgrid disaggregation assumptions, namely, the temperature lapse rate and an empirical elevation-based disaggregation of precipitation.

High Resolution Sensitivity Studies with the Regional Climate Model CCLM in the Alpine Region

2008 ◽  
Vol 17 (4) ◽  
pp. 467-476 ◽  
Author(s):  
Martin Suklitsch ◽  
Andreas Gobiet ◽  
Armin Leuprecht ◽  
Christoph Frei
Keyword(s):  
High Resolution ◽  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
Alpine Region ◽  
Sensitivity Studies

Estimating future changes in Alpine flash floods using CP-RCM projections

2020 ◽  
Author(s):  
Frederiek Sperna Weiland ◽  
Pety Viguurs ◽  
Marjanne Zander ◽  
Albrecht Weerts
Keyword(s):  
Climate Change ◽  
High Resolution ◽  
Climate Models ◽  
Regional Climate ◽  
Flash Floods ◽  
Climate Prediction ◽  
Alpine Region ◽  
Parameter Estimates ◽  
Projection System ◽  
The Alps

<p><span>Flash floods are a significant natural hazard in the Alpine region (FOEN, 2010). With changing rainfall regimes and decreased snow accumulation due to climate change, the risk of flash flood occurrence and timing thereof could change as well (Etchevers et al., 2002).</span></p><p><span>In this study the frequency and occurrence of flash floods in the Alpine region is estimated for current and future climate (RCP8.5) using state-of-the-art high-resolution convection permitting climate models (CP-RCMs). For the historical period and far future (2100), data from an ensemble of convection permitting climate models (Ban et al., submitted 2019) was used to drive a high-resolution distributed hydrological model, i.e. the wflow_sbm model (Imhoff et al., 2019, Verseveld et al., 2020). The model domains cover the mountainous parts of the Danube, Rhone, Rhine and Po located in the Alps.  The CP-RCM time-series available are of limited length due to computational constrains. At the same time the locations of flash floods vary per year therefore a regional scale analysis is made to assess whether in general the severity, frequency and timing of flash floods in the Alps will likely change under changing climate conditions.</span></p><p><span>This research is embedded in the EU H2020 project EUCP (EUropean Climate Prediction system) (https://www.eucp-project.eu/), which aims to support climate adaptation and mitigation decisions for the coming decades by developing a regional climate prediction and projection system based on high-resolution climate models for Europe.</span></p><p>References:</p><p>Etchevers, P.<span>, </span>Golaz, C.<span>, </span>Habets, F.<span>, and </span>Noilhan, J.<span>, </span>Impact of a climate change on the Rhone river catchment hydrology<span>, J. Geophys. Res., 107( D16), doi:, 2002. </span></p><p><span>Federal office for the environment FOEN (2010) Environment Switzerland 2011, Bern and Neuchatel 2011. Retrieved from www.environment-stat.admin.ch</span></p><p><span>Imhoff, R.O., W. van Verseveld, B. van Osnabrugge, A.H. Weerts, 2019. Scaling point-scale pedotransfer functions parameter estimates for seamless large-domain high-resolution distributed hydrological modelling: An example for the Rhine river. Submitted to Water Resources Research, 2019.</span></p><p><span>N. Ban, E. Brisson, C. Caillaud, E. Coppola, E. Pichelli, S. Sobolowski, …, M.J. Zander (submitted 2019): “The first multi-model ensemble of regional climate simulations at the kilometer-scale resolution, Part I: Evaluation of precipitation”, manuscript submitted for publication.</span></p>

scholarly journals Present extent, features and regional distribution of Italian glaciers

2019 ◽  
pp. 159-175 ◽  
Author(s):  
Guglielmina Adele Diolaiuti ◽  
Roberto Sergio Azzoni ◽  
Carlo D'Agata ◽  
Davide Maragno ◽  
Davide Fugazza ◽  
...  
Keyword(s):  
Remote Sensing ◽  
High Resolution ◽  
Regional Scale ◽  
Regional Distribution ◽  
Alpine Region ◽  
Glacier Area ◽  
Glacier Inventory ◽  
Mountain Glaciers ◽  
Multi Temporal ◽  
Comprehensive Study

Remote sensing investigations permit to map and describe at a regional scale and with a multi-temporal approach mountain glaciers. In this work, we present some results from the New Italian Glacier Inventory which we developed by analyzing high-resolution color orthophotos acquired in the timeframe 2005–2011. In particular, in this paper we focused on each Italian Alpine Region, describing in detail glacier extent and features of each mountain group. Although Italian glaciologists were the first to produce glacier inventories (developing a glacier database as early as the beginning of the 20th century), during the last three decades only regional and local glacier lists have been developed. Therefore, a comprehensive study describing the actual whole Italian glaciation has been lacking. The New Italian Glacier Inventory describes 903 glaciers covering altogether an area of 368.10 km2 ± 2%. We found that about 84% of the total number of ice bodies is composed of glaciers smaller than 0.5 km2 covering only 21% of the total area, indicating that the Italian glacier resource is spread into several small ice bodies with only few larger glaciers. A comparison between the total glacier area of the new inventory and the glacier coverage value from the CGI Inventory (1959–1962) suggests a reduction of the glacier extent of about 30%.

Verification of high-resolution real-time forecasts over the Alpine region during the MAP SOP

2003 ◽  
Vol 129 (588) ◽  
pp. 587-607 ◽  
Author(s):  
R. Ferretti ◽  
T. Paolucci ◽  
G. Giuliani ◽  
T. Cherubini ◽  
L. Bernardini ◽  
...  
Keyword(s):  
High Resolution ◽  
Real Time ◽  
Alpine Region

First Results of Monitoring Nature Conservation Sites in Alpine Region by Using Very High Resolution (VHR) X-Band SAR Data

2013 ◽  
Vol 6 (5) ◽  
pp. 2265-2274 ◽  
Author(s):  
Iftikhar Ali ◽  
Christian Schuster ◽  
Marc Zebisch ◽  
Michael Forster ◽  
Birgit Kleinschmit ◽  
...  
Keyword(s):  
Nature Conservation ◽  
High Resolution ◽  
Alpine Region ◽  
X Band ◽  
First Results ◽  
Sar Data ◽  
Very High
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