&quot;The three 100-m resolution Proba-V images shown here were acquired on 27 April 2014, 20 July 2015 and 22 January 2016 respectively.&quot;<p>&quot;But the lake’s shallow nature, with an average depth of just 3 m, coupled with its arid highland surroundings, means that it is very sensitive to fluctuations in climate.&quot;<p>These quotes leave me wondering; why did they chose to take these images in vastly different times of year?