<div dir="ltr"><div><div>There is no *single* function that (a) calculates correlation; (b) calculates the 'effective' degrees of freedom; and (c) calculates the significance using (b). However, a function can be written that uses:<br><br></div>(a)<br><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/escorc_n.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/escorc_n.shtml</a><br>or<br><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/escorc.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/escorc.shtml</a><br><br></div><div>(b)<br><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/equiv_sample_size.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/equiv_sample_size.shtml</a><br><br></div><div>(c)<br><a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/rtest.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/rtest.shtml</a><br><br></div><div><br></div><div>Good Luck<br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 24, 2017 at 3:19 AM, Sri Nandini <span dir="ltr"><<a href="mailto:snandini@marum.de" target="_blank">snandini@marum.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Hello All<br><br>I have been doing correlations and regressions between timeseries and would like to understand how NCL treats autocorrelation between timeseries. <br><br>Is there any NCL function, which tests for statistical significance of correlation
coefficients, reduce the degrees of freedom depending on
autocorrelation? Or detects autocorrelation?<br><br>Deeply appreciated<br></div>
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