a b s t r a c tGround surface temperature history (GSTH) reflecting the past climate conditions in eastern Morocco was evaluated by analyzing the temperature-depth profiles measured in four boreholes at the Figuig Oasis. The temperature-depth data were inverted using the functional space inversion method in order to reconstruct the surface temperature past changes. The results reveal a recent warming in the last century with an amplitude of 1-3°C for the four boreholes and a comparison with surface air temperature (SAT) variation from the Bouarfa and Bechar meteorological stations confirms this result. This warming trend is confirmed by other climate proxies.