Funding for this research was provided by:
H2020 Marie Skłodowska-Curie Actions (H2020-MSCA-IF-2014-655661)
University Corporation for Atmospheric Research (UCAR subaward No. Z17-28063, UCAR subaward No. Z17-28065)
Text and Data Mining valid from 2018-03-07
Received: 20 September 2017
Revised: 29 January 2018
Accepted: 20 February 2018
First Online: 7 March 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed by the authors.
: All necessary permits for sampling and observational field studies have been obtained by the authors from the competent authorities and are mentioned in the acknowledgements, if applicable.