That study's discussion suggested that this was a temporary pause and likely has ended.

From the study you linked:

The slowdown in global warming is expected to be temporary23 however and may already have ended with the strong El Niño Southern Oscillation of 2015 and 2016, with subsequent consequences for the growth rate of atmospheric CO2 (ref. 36).

and

Despite the decline in the airborne fraction and the resulting pause in the growth rate of atmospheric CO2, the ultimate outcome regarding the pace and magnitude of climate change depends heavily on future emission pathways. CO2 emissions, through the burning of fossil fuels, cement production and land use, have continued to track close to the high end of all scenario predictions. Enhanced carbon uptake by the biosphere to date has served to slow the growth rate of atmospheric CO2 and our results support the hypothesis that net terrestrial CO2 uptake has been especially strong recently. Without effective reduction of global CO2 emissions, however, future climate change remains a stark reality.

Here's the /r/science discussion:

https://www.reddit.com/r/science/comments/5butsj/recent_slow_down_in_the_growth_rate_of/