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<p>I try to detect 5- to 10-year trends. I would like to use the
Mann-Kendall test. This is included in NCL6.3.0. <br>
</p>
<p>Unfortunately, I always get probability = 0 and trend = 0 if I
use less than 10 data points for the test. Is there maybe a
cut-off in the implementation?<br>
</p>
<p>The description of the trend_manken links to <a
class="moz-txt-link-freetext"
href="http://vsp.pnnl.gov/help/Vsample/Design_Trend_Mann_Kendall.htm"><a class="moz-txt-link-freetext" href="http://vsp.pnnl.gov/help/Vsample/Design_Trend_Mann_Kendall.htm">http://vsp.pnnl.gov/help/Vsample/Design_Trend_Mann_Kendall.htm</a></a>.
There it links to Gilberts 1987 book. <a
class="moz-txt-link-freetext"
href="http://www.osti.gov/scitech/servlets/purl/7037501/"><a class="moz-txt-link-freetext" href="http://www.osti.gov/scitech/servlets/purl/7037501/">http://www.osti.gov/scitech/servlets/purl/7037501/</a></a>
p. 272 Table A18 shows probability tables for 5<n<10.</p>
<p>Has anyone faced the same problem or maybe already implemented
that?</p>
<p>Unfortunately, at my work station I cannot have a look into the
source code as I only see .a files.</p>
<br>
<pre class="moz-signature" cols="72">--
Aaron Spring
Room 229
Max Planck Institute for Meteorology
Bundesstr. 53, 20146 Hamburg, Germany
<a class="moz-txt-link-freetext" href="mailto:aaron.spring@mpimet.mpg.de">mailto:aaron.spring@mpimet.mpg.de</a></pre>
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