The assessment of the recent mass balance anomaly of Adishi glacier in the Central Caucasus by satellite altimetry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10505858" target="_blank" >RIV/00216208:11310/25:10505858 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hdVL57h340" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=hdVL57h340</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/esp.70180" target="_blank" >10.1002/esp.70180</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The assessment of the recent mass balance anomaly of Adishi glacier in the Central Caucasus by satellite altimetry

Popis výsledku v původním jazyce

Glacier mass balance is a key indicator of climate change, with most glaciers worldwide exhibiting negative trends due to rising temperatures. However, Adishi Glacier in the Central Caucasus presents an anomaly published by earlier studies. This research uses Ice, Clouds and Land Elevation Satellite-2 altimetry data (2018-2024) and the Shuttle Radar Topography Mission Digital Elevation Model to assess recent elevation changes and mass balance variations. ERA5 reanalysis data were used to examine potential climatic drivers. Results show persistent thinning in lower glacier regions, while the accumulation area demonstrates sustained elevation gains. The equilibrium line altitude shows a slight upward trend (+3.07 m/year), consistent with global patterns. Notably, Adishi Glacier exhibited a positive mass balance of 0.05 +/- 0.17 m w.e. a(-1) in 2021 and 0.03 +/- 0.06 m w.e. a(-1) in 2024, but the mean for 2018-2024 remains negative at -0.31 +/- 0.09 m w.e. a(-1). This suggests that, despite short-term gains, the anomaly is not sustained. Compared to the neighbouring glaciers-Bezengi, Khalde, Tsaneri North and South - which show continuous negative mass balances, Adishi&apos;s stability stands out. Regional warming (+0.19 degrees C/year) based on ERA5 reanalysis contributes to ablation zone losses, but glacier hypsometry, with an extensive accumulation area above 4,000 m a.s.l., and orographic effect of snowfall on windward slopes support temporary gains. These favourable conditions, however, are insufficient to maintain a long-term positive mass balance under ongoing climate change.

Název v anglickém jazyce

The assessment of the recent mass balance anomaly of Adishi glacier in the Central Caucasus by satellite altimetry

Popis výsledku anglicky

Glacier mass balance is a key indicator of climate change, with most glaciers worldwide exhibiting negative trends due to rising temperatures. However, Adishi Glacier in the Central Caucasus presents an anomaly published by earlier studies. This research uses Ice, Clouds and Land Elevation Satellite-2 altimetry data (2018-2024) and the Shuttle Radar Topography Mission Digital Elevation Model to assess recent elevation changes and mass balance variations. ERA5 reanalysis data were used to examine potential climatic drivers. Results show persistent thinning in lower glacier regions, while the accumulation area demonstrates sustained elevation gains. The equilibrium line altitude shows a slight upward trend (+3.07 m/year), consistent with global patterns. Notably, Adishi Glacier exhibited a positive mass balance of 0.05 +/- 0.17 m w.e. a(-1) in 2021 and 0.03 +/- 0.06 m w.e. a(-1) in 2024, but the mean for 2018-2024 remains negative at -0.31 +/- 0.09 m w.e. a(-1). This suggests that, despite short-term gains, the anomaly is not sustained. Compared to the neighbouring glaciers-Bezengi, Khalde, Tsaneri North and South - which show continuous negative mass balances, Adishi&apos;s stability stands out. Regional warming (+0.19 degrees C/year) based on ERA5 reanalysis contributes to ablation zone losses, but glacier hypsometry, with an extensive accumulation area above 4,000 m a.s.l., and orographic effect of snowfall on windward slopes support temporary gains. These favourable conditions, however, are insufficient to maintain a long-term positive mass balance under ongoing climate change.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

<a href="/cs/project/EH22_008%2F0004605" target="_blank" >EH22_008/0004605: Přírodní a antropogenní georizika</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Earth Surface Processes and Landforms

ISSN

0197-9337

e-ISSN

1096-9837

Svazek periodika

50

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

e70180

Kód UT WoS článku

001605451400007

EID výsledku v databázi Scopus

2-s2.0-105018672587