Difference between revisions of "Italian Elevation Model - TINITALY"

Revision as of 10:54, 25 September 2020

The DTM model for Italy – Coverage for the Italian Territory

The TINITALY model for Italy – at work at the wind farms just north of Randazzo, Scicily, Italy. 10 m grid and 25 m contour lines - the model shown covers an area of 10km x 10km.

Introduction

The Italian Elevation Model - TINITALY - is a seamless digital elevation model that covers the territory of Italy. It is procuced by Tarquini et al - using a Triangular Irregular Network (TIN) approach. The model was first presented in 2007; it is built from separate elevation models from each of the administrative regions of Italy, please consult (Tarquini, 2007) for further details on data sources. Grid resolution is 10m and this model is released from the National Institute of Geophysics and Volcanology / Istituto Nazionale di Geofisica e Vulcanologia (INGV). As a part of the TINITALY dataset evaluations (Tarquini et al, 2017), the authors reported the TINITALY DEM to outperform other sources:

"The TINITALY DEM is currently the DEM having the highest resolution and the lowest error (on average) covering the whole Italian territory.... and it represents, at a country or (trans-)regional scale, a substantial step forward with respect to global DEMs such as the ASTER DEM and the SRTM DEM...".

Dataset Overview

Spatial Coverage: Italian territory
Resolution: 10 m grid
Data-type: Digital Terrain Model (DTM) - based on multiple, heteorogeneous local data sources
Version: Data downloaded in September 2020.
Vertical Accuracy (RMSE):
- In general: TINITALY: <3.5m (average) and 0.1m-6.0m (range) - vs SRTM: 16m and Aster: 7m-50m for ASTER, see (Tarquini et al, 2007) and (Tarquini et al, 2012)
- At Mount Etna: TINITALY: 1.98m vs SRTM: 7.78m and Aster: 9.36m - comparison against LIDAR grount truth, see (Tarquini et al, 2012)
No data value: -9999 (in original data)

Usage Notes

In the original TINITALY geotiff data, some zero-elevation grid points and erroneous TIN-interpolations that were seen to be present in the data-tiles located in the mountaneous regions to the north. Typically they were found in proximity to the border or just outside the Italian territory. These erroneous values have been removed and are replaced with void-values by EMD (September 2020).

Availability from within WindPRO

The data are available directly from within windPRO in 10-meter grid resolution. The data can be accessed from the online-services in the following objects:

Line Object (with purpose to height contour lines)
Elevation Grid Object

License and Attribution

TINITALY is published with a CC-BY-4.0 license. Please use the following attribution when using this dataset:

Tarquini S., Isola I., Favalli M., Battistini A. (2007) TINITALY, a digital elevation model of Italy with a 10 m-cell size (Version 1.0) [Data set]. 
Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/TINITALY/1.0.
Data processing and distribution through EMD and windPRO.

Documentation / Litterature

(Tarquini et al, 2007): Tarquini S., I. Isola , M. Favalli , F. Mazzarini, M. Bisson, M.T. Pareschi, E. Boschi (2007). TINITALY/01: a new Triangular Irregular Network of Italy, Annals of Geophysics, 50, 407-425 - available here
(Tarquini et al, 2012): Tarquini S., Vinci S., Favalli M., Doumaz F., Fornaciai A., Nannipieri L., (2012). Release of a 10-m-resolution DEM for the Italian territory: Comparison with global-coverage DEMs and anaglyph-mode exploration via the web, Computers & Geosciences , 38, 168-170. doi: doi:10.1016/j.cageo.2011.04.01 - available [here] in pre-print.
(Tarquini et al, 2017): Tarquini S., Nannipieri L., (2017) The 10 m-resolution TINITALY DEM as a trans-disciplinary basis for the analysis of the Italian territory: Current trends and new perspectives. Geomorphology, 281, 108-115. - available here in pre-print.

Acknowledgement

Tarquini S., Isola I., Favalli M., Battistini A. and the National Institute of Geophysics and Volcanology are thanked for producing this digital elevation dataset – and disseminating it in the public domain and thus for aiding the development of renewable energy.

External Links

National Institute of Geophysics and Volcanology / Istitutoi Nazionale di Geofisica e Vulcanologia (INGV): http://www.ingv.it/it/
TINITALY: http://tinitaly.pi.ingv.it/

@@ Line 15: / Line 15: @@
 == Usage Notes ==
-* In the original TINITALY data, some zero-elevation grid points and erroneous TIN-interpolations that were seen to be present in the geotiff data-tiles located in the mountaneous regions to the north. Typically they were found in proximity to the border or just outside the Italian territory. These erroneous values have been removed and are replaced with void-values by EMD (September 2020).
+* In the original TINITALY geotiff data, some zero-elevation grid points and erroneous TIN-interpolations that were seen to be present in the data-tiles located in the mountaneous regions to the north. Typically they were found in proximity to the border or just outside the Italian territory. These erroneous values have been removed and are replaced with void-values by EMD (September 2020).
 == Availability from within WindPRO ==