Quality control and homogeneity of Turkish precipitation data
Article first published online: 9 JAN 2008
Copyright © 2008 John Wiley & Sons, Ltd.
Volume 22, Issue 16, pages 3210–3218, 30 July 2008
How to Cite
Göktürk, O. M., Bozkurt, D., Şen, Ö. L. and Karaca, M. (2008), Quality control and homogeneity of Turkish precipitation data. Hydrol. Process., 22: 3210–3218. doi: 10.1002/hyp.6915
- Issue published online: 12 JUL 2008
- Article first published online: 9 JAN 2008
- Manuscript Accepted: 10 SEP 2007
- Manuscript Received: 6 JAN 2007
- station data;
- quality control;
Outlier trimming and homogeneity checking/correction were performed on the monthly precipitation time series of various lengths from 267 stations in Turkey. Outlier values are usually found during dry summer months, and are concentrated mostly over the southern parts of the country, where the dry period is most pronounced, implying natural extremes rather than wrong measurements. Homogeneity analysis was done using the Standard Normal Homogeneity Test, on an individual monthly basis, which led to many non-testable series due to lack of reference stations, especially during summer months. Yet, remaining testable months were usually helpful for the assessment of homogenity, revealing a well distributed set of stations that proved to be homogeneous. There were still a number of stations which either could not be tested efficiently, or were classified as inhomogeneous. Lack of metadata is argued to be largely responsible for inefficient homogeneity testing. Copyright © 2008 John Wiley & Sons, Ltd.