@article{fdi:010086442, title = {{N}ew insights into the decadal variability in glacier volume of a tropical ice cap, {A}ntisana (0 degrees 29 ' {S}, 78 degrees 09 ' {W}), explained by the morpho-topographic and climatic context}, author = {{B}asantes-{S}errano, {R}. and {R}abatel, {A}. and {F}rancou, {B}ernard and {V}incent, {C}. and {S}oruco, {A}. and {C}ondom, {T}homas and {R}uiz, {J}. {C}.}, editor = {}, language = {{ENG}}, abstract = {{W}e present a comprehensive study of the evolution of the glaciers on the {A}ntisana ice cap (tropical {A}ndes) over the period 1956-2016. {B}ased on geodetic observations of aerial photographs and high-resolution satellite images, we explore the effects of morpho-topographic and climate variables on glacier volumes. {C}ontrasting behaviour was observed over the whole period, with two periods of strong mass loss, 1956-1964 (-0.72 m w.e. yr(-1)) and 1979-1997 (-0.82 m w.e. yr(-1)), and two periods with slight mass loss, 1965-1978 (0.10 m w.e. yr(-1)) and 1998-2016 (-0.26 m w.e. yr(-1)). {T}here was a 42 % reduction in the total surface area of the ice cap. {I}ndividually, glacier responses were modulated by morpho-topographic variables (e.g. maximum and median altitude and surface area), particularly in the case of the small tongues located at low elevations ({G}lacier 1, 5 and 16) which have been undergoing accelerated disintegration since the 1990s and will likely disappear in the coming years. {M}oreover, thanks to the availability of aerial data, a surging event was detected on the {A}ntisana {G}lacier 8 ({G}8) in the 2009-2011 period; such an event is extremely rare in this region and deserves a dedicated study. {D}espite the effect of the complex topography, glaciers have reacted in agreement with changes in climate forcing, with a stepwise transition towards warmer and alternating wet-dry conditions since the mid-1970s. {L}ong-term decadal variability is consistent with the warm-cold conditions observed in the {P}acific {O}cean represented by the {S}outhern {O}scillation index.}, keywords = {{EQUATEUR} ; {ANDES} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{C}ryosphere}, volume = {16}, numero = {11}, pages = {4659--4677}, ISSN = {1994-0416}, year = {2022}, DOI = {10.5194/tc-16-4659-2022}, URL = {https://www.documentation.ird.fr/hor/fdi:010086442}, }