Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model
This study assessed the climate conditions that caused the tropical Zongo Glacier (16° S, Bolivia) to reach its Little Ice Age (LIA) maximum extent in the late 17th century. We carried out sensitivity analyses of the annual surface mass balance to different physically coherent climate scenarios cons...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Académie des sciences
2022-09-01
|
| Series: | Comptes Rendus. Géoscience |
| Subjects: | |
| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.145/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1825206305388756992 |
|---|---|
| author | Autin, Philémon Sicart, Jean Emmanuel Rabatel, Antoine Hock, Regine Jomelli, Vincent |
| author_facet | Autin, Philémon Sicart, Jean Emmanuel Rabatel, Antoine Hock, Regine Jomelli, Vincent |
| author_sort | Autin, Philémon |
| collection | DOAJ |
| description | This study assessed the climate conditions that caused the tropical Zongo Glacier (16° S, Bolivia) to reach its Little Ice Age (LIA) maximum extent in the late 17th century. We carried out sensitivity analyses of the annual surface mass balance to different physically coherent climate scenarios constrained by information taken from paleoclimate proxies and sensitivity studies of past glacier advances. These scenarios were constrained by a 1.1 K cooling and a 20% increase in annual precipitation compared to the current climate. Seasonal precipitation changes were constructed using shuffled input data for the model: measurements of air temperature and relative humidity, precipitation, wind speed, incoming short and longwave radiation fluxes, and assessed using a distributed energy balance model. They were considered plausible if conditions close to equilibrium glacier-wide mass balance were obtained. Results suggest that on top of a 1.1 K cooling and ${\sim }$20% increase in annual precipitation, only two seasonal precipitation patterns allow LIA equilibrium: evenly distributed precipitation events across the year and an early wet season onset. |
| format | Article |
| id | doaj-art-5f850af4919b4b85a9851a7718eb084e |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-5f850af4919b4b85a9851a7718eb084e2025-02-07T10:40:14ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252022-09-01355S138139810.5802/crgeos.14510.5802/crgeos.145Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance modelAutin, Philémon0https://orcid.org/0000-0002-5830-1629Sicart, Jean Emmanuel1https://orcid.org/0000-0003-3332-2738Rabatel, Antoine2https://orcid.org/0000-0002-5304-1055Hock, Regine3https://orcid.org/0000-0001-8336-9441Jomelli, Vincent4https://orcid.org/0000-0002-4512-5216Univ. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l’Environnement (IGE, UMR 5001), F-38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l’Environnement (IGE, UMR 5001), F-38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, IRD, Grenoble-INP, Institut des Géosciences de l’Environnement (IGE, UMR 5001), F-38000 Grenoble, FranceDepartment of Geoscience, Oslo University, Oslo, Norway; Geophysical Institute, University of Alaska, Fairbanks, AK, USACNRS Cerege, Technopôle de l’Environnement Arbois-Méditerranée, Aix en Provence, FranceThis study assessed the climate conditions that caused the tropical Zongo Glacier (16° S, Bolivia) to reach its Little Ice Age (LIA) maximum extent in the late 17th century. We carried out sensitivity analyses of the annual surface mass balance to different physically coherent climate scenarios constrained by information taken from paleoclimate proxies and sensitivity studies of past glacier advances. These scenarios were constrained by a 1.1 K cooling and a 20% increase in annual precipitation compared to the current climate. Seasonal precipitation changes were constructed using shuffled input data for the model: measurements of air temperature and relative humidity, precipitation, wind speed, incoming short and longwave radiation fluxes, and assessed using a distributed energy balance model. They were considered plausible if conditions close to equilibrium glacier-wide mass balance were obtained. Results suggest that on top of a 1.1 K cooling and ${\sim }$20% increase in annual precipitation, only two seasonal precipitation patterns allow LIA equilibrium: evenly distributed precipitation events across the year and an early wet season onset.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.145/Tropical glacierSurface energy balance modelingLittle Ice Age climateAndesClimate reconstruction |
| spellingShingle | Autin, Philémon Sicart, Jean Emmanuel Rabatel, Antoine Hock, Regine Jomelli, Vincent Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model Comptes Rendus. Géoscience Tropical glacier Surface energy balance modeling Little Ice Age climate Andes Climate reconstruction |
| title | Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model |
| title_full | Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model |
| title_fullStr | Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model |
| title_full_unstemmed | Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model |
| title_short | Climate reconstruction of the Little Ice Age maximum extent of the tropical Zongo Glacier using a distributed energy balance model |
| title_sort | climate reconstruction of the little ice age maximum extent of the tropical zongo glacier using a distributed energy balance model |
| topic | Tropical glacier Surface energy balance modeling Little Ice Age climate Andes Climate reconstruction |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.145/ |
| work_keys_str_mv | AT autinphilemon climatereconstructionofthelittleiceagemaximumextentofthetropicalzongoglacierusingadistributedenergybalancemodel AT sicartjeanemmanuel climatereconstructionofthelittleiceagemaximumextentofthetropicalzongoglacierusingadistributedenergybalancemodel AT rabatelantoine climatereconstructionofthelittleiceagemaximumextentofthetropicalzongoglacierusingadistributedenergybalancemodel AT hockregine climatereconstructionofthelittleiceagemaximumextentofthetropicalzongoglacierusingadistributedenergybalancemodel AT jomellivincent climatereconstructionofthelittleiceagemaximumextentofthetropicalzongoglacierusingadistributedenergybalancemodel |