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Long-Term Trend Analysis of Precipitation and Air Temperature for Kentucky, United States

Department of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40546, USA
Author to whom correspondence should be addressed.
Academic Editors: Daniele Bocchiola, Guglielmina Diolaiuti and Claudio Cassardo
Climate 2016, 4(1), 10;
Received: 19 November 2015 / Revised: 19 January 2016 / Accepted: 20 January 2016 / Published: 3 February 2016
(This article belongs to the Special Issue Impact of Climate Change on Water Resources)
Variation in quantities such as precipitation and temperature is often assessed by detecting and characterizing trends in available meteorological data. The objective of this study was to determine the long-term trends in annual precipitation and mean annual air temperature for the state of Kentucky. Non-parametric statistical tests were applied to homogenized and (as needed) pre-whitened annual series of precipitation and mean air temperature during 1950–2010. Significant trends in annual precipitation were detected (both positive, averaging 4.1 mm/year) for only two of the 60 precipitation-homogenous weather stations (Calloway and Carlisle counties in rural western Kentucky). Only three of the 42 temperature-homogenous stations demonstrated trends (all positive, averaging 0.01 °C/year) in mean annual temperature: Calloway County, Allen County in southern-central Kentucky, and urbanized Jefferson County in northern-central Kentucky. In view of the locations of the stations demonstrating positive trends, similar work in adjacent states will be required to better understand the processes responsible for those trends and to properly place them in their larger context, if any. View Full-Text
Keywords: climate variability; trend analysis; Kentucky; non-parametric climate variability; trend analysis; Kentucky; non-parametric
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Chattopadhyay, S.; Edwards, D.R. Long-Term Trend Analysis of Precipitation and Air Temperature for Kentucky, United States. Climate 2016, 4, 10.

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