File:Strahlenexposition DACHL.png

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Captions

Captions

Map of mean annual radiation exposure (terrestrial gamma) in the (partial) German-speaking countries of central Europe and the Alpine realm

Summary[edit]

Description
Deutsch: Karte der mittleren jährlichen Strahlenexposition (terrestrische Gammastrahlung) in den (partiell) deutschsprachigen Ländern Mitteleuropas und des Alpenraumes („DACHL“), basierend auf Daten aus den Jahren 2016 (Deutschland, Schweiz) und 2017/2018 (Österreich); für Details siehe unten.
English: Map of mean annual radiation exposure (terrestrial gamma) in the (partial) German-speaking countries of central Europe and the Alpine realm (“DACHL”), based on data from 2016 (Germany, Switzerland) and 2017/2018 (Austria); for details see below.
Date
Source Own work (for software used, methods, and raw data sources see below)
Author Gretarsson

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Sources and methods[edit]

Deutsch: Die für die Erstellung der Karte benutzen Rohdaten setzen sich zusammen aus Zahlen Um eine realistischere Abbildung der natürlichen terrestrischen Strahlung zu erhalten, die nicht infolge winterlicher Schneebedeckung, insbesondere im deutschen Mittelgebirgs- und im Alpenraum, verfälscht ist, wurde als jeweiliger Jahreswert nicht das arithmetische Mittel der auf drei Nachkommastellen gerundeten Tagesmittelwerte verwendet, sondern der Modalwert, das heißt der am häufigsten auftretende Tagesmittelwert an jeder Messstation. Die Interpolation dieser Jahreswerte erfolgte mittels des Kriging-Algorithmus in ArcMap 10.2.2 (Kriging-Methode: ordinary; Semivariogram model: spherical; Suchradius: 12 Punkte; Auflösung: 200 Meter). Um sauber bis an die Außengrenzen der DACHL-Region interpolieren zu können, wurden zusätzlich EURDEP-Daten von insgesamt 56 grenznahen Messpunkten in allen DACHL-Nachbarländern vom November 2018 in den Datensatz einbezogen (überwiegend basierend auf Stunden-Mittelwerten).[4] Da nicht alle Messdatensätze räumliche Informationen (geographische Koordinaten) enthielten, mussten vor der Korrelation die Messdaten mit räumlichen Daten aus verschiedenen Quellen (u.a. Bundesamt für Kartographie und Geodäsie, Bundesamt für Landestopografie) verknüpft werden. Abweichungen von den tatsächlichen Positionen der Messtellen dürften dabei im Bereich von höchstens wenigen Kilometern liegen und sind angesichts des Kartenmaßstabes vernachlässigbar. Die „Rohkarte“ wurde in QGIS Desktop 2.18.6 erstellt und mit Adobe Photoshop final bearbeitet. Die Höhendaten, aus denen der Hangschummerungslayer in QGIS erstellt wurde, entstammen SRTM-GeoTIFFs, online bereitgestellt vom USGS bzw. der NASA.[5] Die Daten zu Gemeinden/Ortschaften und administrativen Grenzen sind überwiegend selektierte OpenStreetMap-Daten[6].


English: The data set used for the generation of the map is composed of counts In order to get a realistic picture of the terrestrial radiation not distorted by winterly snow cover, with special regard to the German highlands and the Swiss and Austrian Alps, the annual average value for each site is not the arithmetic mean of the daily average values but the mode, i.e. the most common among the daily average values. The interpolation of these annual values was conducted by using the kriging algorithm in ArcMap 10.2.2 (Kriging method: ordinary; semivariogram model: spherical; search radius: 12 points; 200 meters resolution). In order to avoid interpolation gaps near the outer borders of the DACHL realm, EURDEP data of November 2018 from 56 near-border monitoring sites in all adjacent countries of the DACHL realm were added to the data set (mainly based on hourly average values).[4] Since not all of the original data sets included spatial data, these spatial data were obtained from other sources (e.g. Bundesamt für Kartographie und Geodäsie, Bundesamt für Landestopografie) and linked with the radiation data. Deviations from the actual positions of the monitoring sites may not exceed a few kilometers and are negligible given the relatively small map scale. The “raw map” was created in QGIS Desktop 2.18.6 and finalized in Adobe Photoshop. The elevation data from which the hillshade layer was generated (using QGIS as well) are from SRTM GeoTIFFs provided online by USGS and NASA.[5] The community/settlement data and borders of administrative units are mainly a selection of OpenStreetMap data.[6]

References[edit]

  1. ↑ a b Download URL: https://odlinfo.bfs.de/downloads/ODL_Tagesmittelwerte_2016.dat.zip
  2. ↑ a b Bundesamt für Gesundheit (ed.): Umweltradioaktivität und Strahlendosen in der Schweiz 2016. BAG, Direktionsbereich Verbraucherschutz, Abteilung Strahlenschutz, Umweltradioaktivität, Bern 2017 (PDF), p. 48
  3. ↑ a b copied & pasted from https://www.bmnt.gv.at/umwelt/strahlen-atom/strahlen-warn-system/messwerte_aktuell.html (note that only data from the past 7 months are available for each monitoring site)
  4. ↑ a b copied & pasted from http://eurdepweb.jrc.ec.europa.eu/EurdepMap/Default.aspx (note that only data from the past 4 months are availabe for each monitoring site)
  5. ↑ a b https://earthexplorer.usgs.gov/
  6. ↑ a b created by Open Street Map contributors, 2018, licensed under the Open Database 1.0 License, downloaded as shape files at Geofabrik/Europe and extracted from OSM as shape files via OSM Admin Boundaries Map

File history

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Date/TimeThumbnailDimensionsUserComment
current01:09, 5 January 2019Thumbnail for version as of 01:09, 5 January 20192,772 × 2,375 (4.52 MB)Gretarsson (talk | contribs)added missing label for city of Essen, corrected unit abbreviation µS/h to µSv/h
16:19, 18 December 2018Thumbnail for version as of 16:19, 18 December 20182,772 × 2,375 (4.52 MB)Gretarsson (talk | contribs){{Information |description ={{de|1=Karte mit der mittleren jährlichen Strahlenexposition in den (partiell) deutschsprachigen Ländern Mitteleuropas und des Alpenraumes, basierend auf Daten aus den Jahren 2016 (Deutschland, Schweiz) und 2017/2018 (Österreich). }} {{en|1=Map of mean annual radiation exposure (T-gamma) in the (partial) German-speaking countries of central Europe and the Alpine realm, based on data from 2016 (Germany, Switzerland) and 2017/2018 (Austria).}} |date =2018-...

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