000048683 001__ 48683 000048683 005__ 20200221144325.0 000048683 0247_ $$2doi$$a10.5194/tc-10-681-2016 000048683 0248_ $$2sideral$$a94671 000048683 037__ $$aART-2016-94671 000048683 041__ $$aeng 000048683 100__ $$0(orcid)0000-0002-7270-9313$$aLópez-Moreno, J.I. 000048683 245__ $$aThinning of the Monte Perdido Glacier in the Spanish Pyrenees since 1981 000048683 260__ $$c2016 000048683 5060_ $$aAccess copy available to the general public$$fUnrestricted 000048683 5203_ $$aThis paper analyzes the evolution of the Monte Perdido Glacier, the third largest glacier in the Pyrenees, from 1981 to the present. We assessed the evolution of the glacier''s surface area by analysis of aerial photographs from 1981, 1999, and 2006, and changes in ice volume by geodetic methods with digital elevation models (DEMs) generated from topographic maps (1981 and 1999), airborne lidar (2010) and terrestrial laser scanning (TLS, 2011, 2012, 2013, and 2014) data. We interpreted the changes in the glacier based on climate data from nearby meteorological stations. The results indicate that the degradation of this glacier accelerated after 1999. The rate of ice surface loss was almost three times greater during 1999-2006 than during earlier periods. Moreover, the rate of glacier thinning was 1.85 times faster during 1999-2010 (rate of surface elevation change = -8.98 ± 1.80 m, glacier-wide mass balance = -0.73 ± 0.14 m w.e. yr-1) than during 1981-1999 (rate of surface elevation change = -8.35 ± 2.12 m, glacier-wide mass balance = -0.42 ± 0.10 m w.e. yr-1). From 2011 to 2014, ice thinning continued at a slower rate (rate of surface elevation change = -1.93 ± 0.4 m yr-1, glacier-wide mass balance = -0.58 ± 0.36 m w.e. yr-1). This deceleration in ice thinning compared to the previous 17 years can be attributed, at least in part, to two consecutive anomalously wet winters and cool summers (2012-2013 and 2013-2014), counteracted to some degree by the intense thinning that occurred during the dry and warm 2011-2012 period. However, local climatic changes observed during the study period do not seem sufficient to explain the acceleration of ice thinning of this glacier, because precipitation and air temperature did not exhibit statistically significant trends during the study period. Rather, the accelerated degradation of this glacier in recent years can be explained by a strong disequilibrium between the glacier and the current climate, and likely by other factors affecting the energy balance (e.g., increased albedo in spring) and feedback mechanisms (e.g., heat emitted from recently exposed bedrock and debris covered areas). 000048683 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2014-52599-P$$9info:eu-repo/grantAgreement/ES/MAGRAMA/OAPN-844-2013 000048683 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000048683 590__ $$a4.803$$b2016 000048683 591__ $$aGEOGRAPHY, PHYSICAL$$b3 / 49 = 0.061$$c2016$$dQ1$$eT1 000048683 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b8 / 188 = 0.043$$c2016$$dQ1$$eT1 000048683 592__ $$a3.696$$b2016 000048683 593__ $$aWater Science and Technology$$c2016$$dQ1 000048683 593__ $$aEarth-Surface Processes$$c2016$$dQ1 000048683 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000048683 700__ $$0(orcid)0000-0001-5483-0147$$aRevuelto, J. 000048683 700__ $$aRico, I. 000048683 700__ $$0(orcid)0000-0002-0826-3492$$aChueca-Cía, J.$$uUniversidad de Zaragoza 000048683 700__ $$0(orcid)0000-0003-2627-7166$$aJulián, A.$$uUniversidad de Zaragoza 000048683 700__ $$0(orcid)0000-0002-2864-0195$$aSerreta, A.$$uUniversidad de Zaragoza 000048683 700__ $$aSerrano, E. 000048683 700__ $$0(orcid)0000-0003-2892-518X$$aVicente-Serrano, S. 000048683 700__ $$aAzorin-Molina, C. 000048683 700__ $$aAlonso-González, E. 000048683 700__ $$0(orcid)0000-0002-8535-817X$$aGarcía-Ruiz, J.M. 000048683 7102_ $$13006$$2430$$aUniversidad de Zaragoza$$bDpto. Geograf. Ordenac.Territ.$$cÁrea Geografía Física 000048683 7102_ $$15002$$2305$$aUniversidad de Zaragoza$$bDpto. Ingeniería Diseño Fabri.$$cÁrea Expresión Gráfica en Ing. 000048683 773__ $$g10, 2 (2016), 681-694$$pCRYOSPHERE$$tCRYOSPHERE$$x1994-0416 000048683 8564_ $$s494217$$uhttps://zaguan.unizar.es/record/48683/files/texto_completo.pdf$$yVersión publicada 000048683 8564_ $$s106703$$uhttps://zaguan.unizar.es/record/48683/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000048683 909CO $$ooai:zaguan.unizar.es:48683$$particulos$$pdriver 000048683 951__ $$a2020-02-21-13:43:31 000048683 980__ $$aARTICLE