Constraints of the enhanced snow melt in the northern Antarctic
Peninsula during the 2021/22 melt season from Sentinel-1 data
and in-situ observations

J 2026

Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations

FÁROVÁ, Kateřina; Kamil LÁSKA a Zbynek ENGEL

Základní údaje

Originální název

Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations

Autoři

FÁROVÁ, Kateřina; Kamil LÁSKA a Zbynek ENGEL

Vydání

Cold Regions Science and Technology, Elsevier, 2026, 0165-232X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10508 Physical geography

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.800 v roce 2024

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Melt; Glacier; Sentinel-1; Air temperature; Antarctic Peninsula

Štítky

14315030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 3. 2026 16:14, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

A time series of 32 Sentinel-1 images were used to establish the constraints of the surface melt on the Trinity Peninsula and James Ross Island from October 2021 to April 2022. The consistency of the decrease in the backscatter coefficient (sigma 0) with the rise in air temperature above 0 degrees C was validated through in-situ measured meteorological data. The correlation coefficient between the air temperature characteristics and sigma 0 was highest in the accumulation area of the glaciers on James Ross Island. A decrease of sigma 0 by-4 dB, compared to the winter mean value, was chosen as the threshold for the melt constraint. The number of melt days, derived from the Sentinel-1 data, was in better agreement with the same characteristics retrieved from the six-day mean air temperature, than that from the sum of positive degree days. The method proved to be useful when applied to the percolation zone, but unsuitable for the termination zone of glaciers with bare ice and for the dry snow zone. The snow-melt indices were subject to detailed analysis along selected transects across the Trinity Peninsula and James Ross Island in terms of both elevation and local/regional differences. The maximum number of melt days ranged from 150 to 180 days on the west coast of the Trinity Peninsula to 90-120 days on the southeastern part of James Ross Island. The earliest occurrence and longest duration of snow melt was observed on the northwestern coast of the Trinity Peninsula. On the east coast of the Peninsula, in the area from 200 to 600 m a.s.l., the melt duration was approximately 100 days. During a significant temperature anomaly in early February 2022, the snow melt extended to the summit of Mt. Haddington. At the same time, surface snow melting advanced to an elevation of 1600 m a.s.l. on the Trinity Peninsula. Apart from this extreme event, melting at altitudes above 1000-1200 m a.s.l. was rarely observed.

Návaznosti

MUNI/A/1469/2023, interní kód MU

Název: Geografický výzkum společenských a přírodních procesů v období změn

Investor: Masarykova univerzita, Geografický výzkum společenských a přírodních procesů v období změn

VAN 2025, interní kód MU

Název: Český antarktický výzkumný program 2025-2027

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Český antarktický výzkumný program 2025-2027, Výzkum v oblasti Antarktidy

Citovat

FÁROVÁ, Kateřina; Kamil LÁSKA a Zbynek ENGEL. Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations. Cold Regions Science and Technology. Elsevier, 2026, roč. 242, January, s. 104722-104734. ISSN 0165-232X. Dostupné z: https://doi.org/10.1016/j.coldregions.2025.104722.

@article{2533762,
   author = {Fárová, Kateřina and Láska, Kamil and Engel, Zbynek},
   article_number = {January},
   doi = {https://doi.org/10.1016/j.coldregions.2025.104722},
   keywords = {Melt; Glacier; Sentinel-1; Air temperature; Antarctic Peninsula},
   language = {eng},
   issn = {0165-232X},
   journal = {Cold Regions Science and Technology},
   title = {Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations},
   url = {http://dx.doi.org/10.1016/j.coldregions.2025.104722},
   volume = {242},
   year = {2026}
}

TY  - JOUR
ID  - 2533762
AU  - Fárová, Kateřina - Láska, Kamil - Engel, Zbynek
PY  - 2026
TI  - Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations
JF  - Cold Regions Science and Technology
VL  - 242
IS  - January
SP  - 104722
EP  - 104722
PB  - Elsevier
SN  - 0165232X
KW  - Melt
KW  - Glacier
KW  - Sentinel-1
KW  - Air temperature
KW  - Antarctic Peninsula
UR  - http://dx.doi.org/10.1016/j.coldregions.2025.104722
N2  - A time series of 32 Sentinel-1 images were used to establish the constraints of the surface melt on the Trinity Peninsula and James Ross Island from October 2021 to April 2022. The consistency of the decrease in the backscatter coefficient (sigma 0) with the rise in air temperature above 0 degrees C was validated through in-situ measured meteorological data. The correlation coefficient between the air temperature characteristics and sigma 0 was highest in the accumulation area of the glaciers on James Ross Island. A decrease of sigma 0 by-4 dB, compared to the winter mean value, was chosen as the threshold for the melt constraint. The number of melt days, derived from the Sentinel-1 data, was in better agreement with the same characteristics retrieved from the six-day mean air temperature, than that from the sum of positive degree days. The method proved to be useful when applied to the percolation zone, but unsuitable for the termination zone of glaciers with bare ice and for the dry snow zone. The snow-melt indices were subject to detailed analysis along selected transects across the Trinity Peninsula and James Ross Island in terms of both elevation and local/regional differences. The maximum number of melt days ranged from 150 to 180 days on the west coast of the Trinity Peninsula to 90-120 days on the southeastern part of James Ross Island. The earliest occurrence and longest duration of snow melt was observed on the northwestern coast of the Trinity Peninsula. On the east coast of the Peninsula, in the area from 200 to 600 m a.s.l., the melt duration was approximately 100 days. During a significant temperature anomaly in early February 2022, the snow melt extended to the summit of Mt. Haddington. At the same time, surface snow melting advanced to an elevation of 1600 m a.s.l. on the Trinity Peninsula. Apart from this extreme event, melting at altitudes above 1000-1200 m a.s.l. was rarely observed.
ER  -

FÁROVÁ, Kateřina; Kamil LÁSKA a Zbynek ENGEL. Constraints of the enhanced snow melt in the northern Antarctic Peninsula during the 2021/22 melt season from Sentinel-1 data and in-situ observations. \textit{Cold Regions Science and Technology}. Elsevier, 2026, roč.~242, January, s.~104722-104734. ISSN~0165-232X. Dostupné z: https://doi.org/10.1016/j.coldregions.2025.104722.

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