Effect of summer snow cover on the active layer thermal regime
and thickness on CALM-S JGM site, James Ross Island, eastern
Antarctic Peninsula

J 2021

Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula

HRBÁČEK, Filip; Zbyněk ENGEL; Michaela KŇAŽKOVÁ a Jana SMOLÍKOVÁ

Základní údaje

Originální název

Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula

Autoři

HRBÁČEK, Filip; Zbyněk ENGEL; Michaela KŇAŽKOVÁ a Jana SMOLÍKOVÁ

Vydání

Catena, Elsevier B.V. 2021, 0341-8162

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: 6.367

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/21:00119355

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Antarctica; Soils; Periglacial environment; Ground penetrating radar; Ground temperature

Štítky

14315030, H24, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 7. 12. 2021 11:17, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

This study aims to assess the role of ephemeral snow cover on ground thermal regime and active layer thickness in two ground temperature measurement profiles on the Circumpolar Active Layer Monitoring Network – South (CALM-S) JGM site on James Ross Island, eastern Antarctic Peninsula during the high austral summer 2018. The snowstorm of 13–14 January created a snowpack of recorded depth of up to 38 cm. The snowpack remained on the study site for 12 days in total and covered 46% of its area six days after the snowfall. It directly affected ground thermal regime as indicates temperature record at snow-covered profile AWS-JGM which subsurface section was nearly 5 °C colder compared to the snow-free AWS-CALM profile. The thermal insulation effect of snow cover is also reflected in the mean monthly (January) and summer (DJF) ground temperatures on AWS-JGM that decreased by ca 1.1 and 0.7 °C, respectively. Summer thawing degree days at a depth of 5 cm decreased by ca 10% and active layer was ca 5–10 cm thinner when compared to previous snow-free summer seasons. Surveying by ground penetrating radar revealed a general active layer thinning of up to 20% in those parts of the CALM-S which were covered by snow of >20 cm depth for at least six days.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

GA20-20240S, projekt VaV

Název: Dopady klimatické změny na tání sněhu a ledu v oblasti Antarktického poloostrova

Investor: Grantová agentura ČR, Dopady klimatické změny na tání sněhu a ledu v oblasti Antarktického poloostrova

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar Research Infrastructure

MUNI/A/1570/2020, interní kód MU

Název: Geografický výzkum dynamiky přírodních a společenských prostorových procesů (Akronym: GEODYN)

Investor: Masarykova univerzita, Geografický výzkum dynamiky přírodních a společenských prostorových procesů

Citovat

HRBÁČEK, Filip; Zbyněk ENGEL; Michaela KŇAŽKOVÁ a Jana SMOLÍKOVÁ. Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula. Catena. Elsevier B.V., 2021, roč. 207, December, s. 105608-105618. ISSN 0341-8162. Dostupné z: https://doi.org/10.1016/j.catena.2021.105608.

@article{1804566,
   author = {Hrbáček, Filip and Engel, Zbyněk and Kňažková, Michaela and Smolíková, Jana},
   article_number = {December},
   doi = {https://doi.org/10.1016/j.catena.2021.105608},
   keywords = {Antarctica; Soils; Periglacial environment; Ground penetrating radar; Ground temperature},
   language = {eng},
   issn = {0341-8162},
   journal = {Catena},
   title = {Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula},
   url = {https://doi.org/10.1016/j.catena.2021.105608},
   volume = {207},
   year = {2021}
}

TY  - JOUR
ID  - 1804566
AU  - Hrbáček, Filip - Engel, Zbyněk - Kňažková, Michaela - Smolíková, Jana
PY  - 2021
TI  - Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula
JF  - Catena
VL  - 207
IS  - December
SP  - 105608
EP  - 105608
PB  - Elsevier B.V.
SN  - 03418162
KW  - Antarctica
KW  - Soils
KW  - Periglacial environment
KW  - Ground penetrating radar
KW  - Ground temperature
UR  - https://doi.org/10.1016/j.catena.2021.105608
N2  - This study aims to assess the role of ephemeral snow cover on ground thermal regime and active layer thickness in two ground temperature measurement profiles on the Circumpolar Active Layer Monitoring Network – South (CALM-S) JGM site on James Ross Island, eastern Antarctic Peninsula during the high austral summer 2018. The snowstorm of 13–14 January created a snowpack of recorded depth of up to 38 cm. The snowpack remained on the study site for 12 days in total and covered 46% of its area six days after the snowfall. It directly affected ground thermal regime as indicates temperature record at snow-covered profile AWS-JGM which subsurface section was nearly 5 °C colder compared to the snow-free AWS-CALM profile. The thermal insulation effect of snow cover is also reflected in the mean monthly (January) and summer (DJF) ground temperatures on AWS-JGM that decreased by ca 1.1 and 0.7 °C, respectively. Summer thawing degree days at a depth of 5 cm decreased by ca 10% and active layer was ca 5–10 cm thinner when compared to previous snow-free summer seasons. Surveying by ground penetrating radar revealed a general active layer thinning of up to 20% in those parts of the CALM-S which were covered by snow of >20 cm depth for at least six days.
ER  -

HRBÁČEK, Filip; Zbyněk ENGEL; Michaela KŇAŽKOVÁ a Jana SMOLÍKOVÁ. Effect of summer snow cover on the active layer thermal regime and thickness on CALM-S JGM site, James Ross Island, eastern Antarctic Peninsula. \textit{Catena}. Elsevier B.V., 2021, roč.~207, December, s.~105608-105618. ISSN~0341-8162. Dostupné z: https://doi.org/10.1016/j.catena.2021.105608.

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