Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2014 Dec 8;5:5752. doi: 10.1038/ncomms6752

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2014, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

PMC Copyright notice

Kendall’s τ values are calculated to determine the tendency of estimated (a) AR(1) coefficient and (b) variance indicators (see main text and Methods). Significance of results, using bootstrapped null model ensembles to determine P values (see main text and Methods), are plotted for (c) AR(1) and (d) variance. Any P values below the dotted horizontal line are significant at the 95% level (P<0.05). Black filled-in points correspond to 26.25°N (where the time series analysed in Fig. 3 is obtained). Approximate locations of the OSNAP and SAMOC monitoring arrays are shown in red and blue, respectively.