Erratum to: Geosci. Lett. (2016) 3:26 DOI 10.1186/s40562-016-0058-z

After publication of the original article [1], the authors found the following sentence was missing from the Acknowledgements:

“This work comprises Earth Observatory of Singapore contribution 130. This research is supported by the National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centres of Excellence initiative.”