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Temporal trend and dynamics of the active layer at different monitoring points in Maritime Antarctica and Peninsula.

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Titel: Temporal trend and dynamics of the active layer at different monitoring points in Maritime Antarctica and Peninsula.
Autoren: Correia TP; Instituto Federal do Sudeste de Minas Gerais, Rua Monsenhor José Augusto, 204, Campus Barbacena, São José, 36205-018 Barbacena, MG, Brazil., Veloso GV; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil., Lyra GB; Universidade Federal Rural do Rio de Janeiro, Departamento de Ciências Ambientais, Km 07, Zona Rural, BR-465, Seropédica, 23890-000 Rio de Janeiro, RJ, Brazil., Michel RF; Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16, 45662-900 Ilhéus, BA, Brazil., Fernandes Filho EI; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil., Schaefer CE; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil., Justino FB; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil., Francelino MR; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
Quelle: Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2025 Nov 17; Vol. 97 (4), pp. e20240586. Date of Electronic Publication: 2025 Nov 17 (Print Publication: 2025).
Publikationsart: Journal Article
Sprache: English
Info zur Zeitschrift: Publisher: Academia Brasileira De Ciencias Country of Publication: Brazil NLM ID: 7503280 Publication Model: eCollection Cited Medium: Internet ISSN: 1678-2690 (Electronic) Linking ISSN: 00013765 NLM ISO Abbreviation: An Acad Bras Cienc Subsets: MEDLINE
Imprint Name(s): Original Publication: Rio De Janeiro : Academia Brasileira De Ciencias
MeSH-Schlagworte: Environmental Monitoring*/methods , Soil*/chemistry , Global Warming* , Climate Change*, Antarctic Regions ; Seasons ; Temperature ; Time Factors
Abstract: Antarctica provides a unique opportunity to understand changes in permafrost and global climate. Four monitoring sites were selected between maritime Antarctica and the Peninsula to study the temporal trend, air and soil temperature, and dynamics of the active soil layer. The Mann-Kendall method was used to determine the presence of a trend (complete series, seasonal and annual), the Sen-Slope test to check the degree of slope of the trend, and the Pettitt test to determine the exact date of the sudden change in the trend line. The thickness of the active layer - ALT - was estimated using the monthly maximum temperature. The local effects of each site influenced the dynamics of the active layer and the thermal regime. Deception heat balance was influenced primarily by geothermal activity, mainly at depth. In summer and autumn, the isotherm increases with depth at Low Head, Deception and Hope Bay. The Mann-Kendall test was significant for all sites studied. The ALT was thicker near the peninsula than in places in Shetland. Global warming causes increasingly frequent and intense extreme events, added to natural variability and the effect of local and regional climate factors.
Substance Nomenclature: 0 (Soil)
Entry Date(s): Date Created: 20251119 Date Completed: 20251119 Latest Revision: 20251119
Update Code: 20251121
DOI: 10.1590/0001-3765202520240586
PMID: 41259560
Datenbank: MEDLINE
Beschreibung
Abstract:Antarctica provides a unique opportunity to understand changes in permafrost and global climate. Four monitoring sites were selected between maritime Antarctica and the Peninsula to study the temporal trend, air and soil temperature, and dynamics of the active soil layer. The Mann-Kendall method was used to determine the presence of a trend (complete series, seasonal and annual), the Sen-Slope test to check the degree of slope of the trend, and the Pettitt test to determine the exact date of the sudden change in the trend line. The thickness of the active layer - ALT - was estimated using the monthly maximum temperature. The local effects of each site influenced the dynamics of the active layer and the thermal regime. Deception heat balance was influenced primarily by geothermal activity, mainly at depth. In summer and autumn, the isotherm increases with depth at Low Head, Deception and Hope Bay. The Mann-Kendall test was significant for all sites studied. The ALT was thicker near the peninsula than in places in Shetland. Global warming causes increasingly frequent and intense extreme events, added to natural variability and the effect of local and regional climate factors.
ISSN:1678-2690
DOI:10.1590/0001-3765202520240586