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Development and Evaluation of a Methodology for the Generation of Gridded Isotopic Datasets

Abstract

The accurate knowledge of the spatial distribution of stable isotopes in precipitation is necessary for several applications. Since the number of rain sampling stations is small and unevenly distributed around the globe, the global distribution of stable isotopes can be calculated via the generation of gridded isotopic data sets. Several methods have been proposed for this purpose. In this work a methodology is proposed for the development of 10'x 10' gridded isotopic data from precipitation in the central and eastern Mediterranean. Statistical models are developed taking into account geographical and meteorological parameters as regressors. The residuals are interpolated onto the grid using ordinary kriging and thin plate splines. The result is added to the model grids, to obtain the final isotopic gridded data sets. Models are evaluated using an independent data set. the overall performance of the procedure is satisfactory and the obtained gridded data reproduce the isotopic parameters successfully. (author)
Authors:
Argiriou, A. A.; Salamalikis, V; [1]  Lykoudis, S. P. [2] 
  1. University of Patras, Department of Physics, Laboratory of Atmospheric Physics, Patras (Greece)
  2. National Observatory of Athens, Institute of Environmental and Sustainable Development, Athens (Greece)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/39
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 3 figs., 13 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. Vol. I. Proceedings of an International Symposium| 547 p.
Subject:
58 GEOSCIENCES; DATASETS; EVALUATION; KRIGING; METEOROLOGY; PERFORMANCE; RAIN; SAMPLING; SPATIAL DISTRIBUTION; STABLE ISOTOPES; STATISTICAL MODELS
OSTI ID:
22122065
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Contract Number:
Project IAEA CRP 13931
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0822078176
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1580_vol1_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 161-169
Announcement Date:
Aug 29, 2013

Citation Formats

Argiriou, A. A., Salamalikis, V, and Lykoudis, S. P. Development and Evaluation of a Methodology for the Generation of Gridded Isotopic Datasets. IAEA: N. p., 2013. Web.
Argiriou, A. A., Salamalikis, V, & Lykoudis, S. P. Development and Evaluation of a Methodology for the Generation of Gridded Isotopic Datasets. IAEA.
Argiriou, A. A., Salamalikis, V, and Lykoudis, S. P. 2013. "Development and Evaluation of a Methodology for the Generation of Gridded Isotopic Datasets." IAEA.
@misc{etde_22122065,
title = {Development and Evaluation of a Methodology for the Generation of Gridded Isotopic Datasets}
author = {Argiriou, A. A., Salamalikis, V, and Lykoudis, S. P.}
abstractNote = {The accurate knowledge of the spatial distribution of stable isotopes in precipitation is necessary for several applications. Since the number of rain sampling stations is small and unevenly distributed around the globe, the global distribution of stable isotopes can be calculated via the generation of gridded isotopic data sets. Several methods have been proposed for this purpose. In this work a methodology is proposed for the development of 10'x 10' gridded isotopic data from precipitation in the central and eastern Mediterranean. Statistical models are developed taking into account geographical and meteorological parameters as regressors. The residuals are interpolated onto the grid using ordinary kriging and thin plate splines. The result is added to the model grids, to obtain the final isotopic gridded data sets. Models are evaluated using an independent data set. the overall performance of the procedure is satisfactory and the obtained gridded data reproduce the isotopic parameters successfully. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}