Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00138435" target="_blank" >RIV/00216224:14310/24:00138435 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/24:10486420 RIV/60076658:12310/24:43909136

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/journal-of-glaciology/article/recent-change-in-surface-massbalance-trends-of-glaciers-on-james-ross-island-northeastern-antarctic-peninsula/B42E321BC6B786FB14425DF5A850FDE2#article" target="_blank" >https://www.cambridge.org/core/journals/journal-of-glaciology/article/recent-change-in-surface-massbalance-trends-of-glaciers-on-james-ross-island-northeastern-antarctic-peninsula/B42E321BC6B786FB14425DF5A850FDE2#article</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/jog.2024.16" target="_blank" >10.1017/jog.2024.16</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula

Popis výsledku v původním jazyce

Glaciers cover 132 900 km2 around the Antarctic Ice Sheet, but few are subject to annual mass-balance measurements. Lookalike Glacier and Davies Dome on James Ross Island have been monitored since 2009, providing the third longest mass-balance record for the northern Antarctic Peninsula. These glaciers had a balanced mass budget over the period 2009/10–2014/15 but started to lose their mass thereafter. Between 2014/15 and 2020/21, mass change rates were −0.15 ± 0.13 and −0.26 ± 0.11 m w.e. a−1 for Lookalike Glacier and Davies Dome, respectively. The mean equilibrium-line altitudes over this period at Lookalike Glacier (362 ± 18 m a.s.l.) and Davies Dome (&gt;427 ± 22 m a.s.l.) are 51 and &gt;34 m higher compared to the previous 6-year period. The mean accumulation area ratio values determined for the period 2014/15–2020/21 are lower than the balanced-budget ratio indicating that glaciers are out of balance with the current climate. The data confirm the transition from positive to negative mass-balance periods around 2014/15, which is attributed to the change in air temperature trends. The mean summer temperature increased by 0.9°C between the periods 2009/10–2014/15 and 2015/16–2020/21 and melt-season temperatures became predominantly positive.

Název v anglickém jazyce

Recent change in surface mass-balance trends of glaciers on James Ross Island, north-eastern Antarctic Peninsula

Popis výsledku anglicky

Glaciers cover 132 900 km2 around the Antarctic Ice Sheet, but few are subject to annual mass-balance measurements. Lookalike Glacier and Davies Dome on James Ross Island have been monitored since 2009, providing the third longest mass-balance record for the northern Antarctic Peninsula. These glaciers had a balanced mass budget over the period 2009/10–2014/15 but started to lose their mass thereafter. Between 2014/15 and 2020/21, mass change rates were −0.15 ± 0.13 and −0.26 ± 0.11 m w.e. a−1 for Lookalike Glacier and Davies Dome, respectively. The mean equilibrium-line altitudes over this period at Lookalike Glacier (362 ± 18 m a.s.l.) and Davies Dome (&gt;427 ± 22 m a.s.l.) are 51 and &gt;34 m higher compared to the previous 6-year period. The mean accumulation area ratio values determined for the period 2014/15–2020/21 are lower than the balanced-budget ratio indicating that glaciers are out of balance with the current climate. The data confirm the transition from positive to negative mass-balance periods around 2014/15, which is attributed to the change in air temperature trends. The mean summer temperature increased by 0.9°C between the periods 2009/10–2014/15 and 2015/16–2020/21 and melt-season temperatures became predominantly positive.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Glaciology

ISSN

0022-1430

e-ISSN

1727-5652

Svazek periodika

70

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

001190399500001

EID výsledku v databázi Scopus

2-s2.0-85184876142