@article{fdi:010081118,
  title = {{G}iant dust particles at {N}evado {I}llimani : a proxy of summertime deep convection over the {B}olivian {A}ltiplano},
  author = {{L}indau, {F}. {G}. {L}. and {S}imoes, {J}. {C}. and {D}elmonte, {B}. and {G}inot, {P}atrick and {B}accolo, {G}. and {P}aleari, {C}. {I}. and {D}i {S}tefano, {E}. and {K}orotkikh, {E}. and {I}ntrone, {D}. {S}. and {M}aggi, {V}. and {G}arzanti, {E}. and {A}ndo, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} deeper understanding of past atmospheric circulation variability in the {C}entral {A}ndes is a high-priority topic in paleoclimatology mainly because of the necessity to validate climate models used to predict future precipitation trends and to develop mitigation and/or adaptation strategies for future climate change scenarios in this region. {W}ithin this context, we here investigate an 18-year firn core drilled at {N}evado {I}llimani in order to interpret its mineral dust record in relation to seasonal processes, in particular atmospheric circulation and deep convection. {T}he core was dated by annual layer counting based on seasonal oscillations of dust, calcium, and stable isotopes. {G}eochemical and mineralogical data show that dust is regionally sourced in winter and summer. {D}uring austral summer (wet season), an increase in the relative proportion of giant dust particles (empty set > 20 mu m) is observed, in association with oscillations of stable isotope records (delta {D}, delta {O}-18). {I}t seems that at {N}evado {I}llimani both the deposition of dust and the isotopic signature of precipitation are influenced by atmospheric deep convection, which is also related to the total amount of precipitation in the area. {T}his hypothesis is corroborated by regional meteorological data. {T}he interpretation of giant particle and stable isotope records suggests that downdrafts due to convective activity promote turbulent conditions capable of suspending giant particles in the vicinity of {N}evado {I}llimani. {G}iant particles and stable isotopes, when considered together, can be therefore used as a new proxy for obtaining information about deep convective activity in the past.},
  keywords = {{BOLIVIE} ; {ANDES} ; {NEVADO} {ILLIMANI}},
  booktitle = {},
  journal = {{C}ryosphere},
  volume = {15},
  numero = {3},
  pages = {1383--1397},
  ISSN = {1994-0416},
  year = {2021},
  DOI = {10.5194/tc-15-1383-2021},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081118},
}