For past so many years, ice lossis being seen in glaciers and ice sheets. Global warming has deteriorated conditions to such a level that now the Arctic sea ice is also melting. A novel research has unveiled that Arctic sea ice is being lost in the long term.

The researchers have affirmed that there was a rise in Arctic sea ice in 2013. But when it comes to overall picture then Arctic sea ice has witnessed a decreasing trend since 1970s. The research published in the journal Nature Geoscience is based on the assessment of observations of sea ice volume between 2010 and 2014.

The observations were from the European Space Agency's CryoSat-2 satellite. From the observations, the researchers have come to know a rise was seen in Arctic sea ice between 2012 and 2013. At that time, sea ice volume increased by 41%.

Study's lead researcher Rachel Tilling from the University College London considered the rise to be quite surprising. As per Tilling, a sudden rise means there was 33% more ice in 2013 and 25% more in 2014 when compared to the average amount present between 2010 and 2012.

But the conditions in 2013 were different to overall trend in the Arctic seen in last few decades. The researchers said that sea ice thickness is highly variable. "If you look at the long-term temperature trend in the Arctic, it's upward, and if you look at the long-term volume trend, it's downward. If temperatures continue to rise, volume is going to continue to decrease", said the researchers.