Is the Arctic sea ice volume increasing?
This question has already been answered on Skeptics.SE:

Did the Arctic Ice Sheet grow by 60% from 2012 to 2013?

The short answer is that those two graphs are consistent with each other. The first shows a 33 year trend of declining Arctic sea ice (summer minimum, I think), whereas the second highlights inter-annual variation in Arctic sea ice over the last four years.  We don't expect long-term trends to be strictly monotonic increases or decreases, so both positive or negative year-on-year differences, such as those between 2012 and 2013, can be consistent with the trend.