Open AccessGeneral description of some meteo-marine variables of surface waters adjacent to the Palmer Archipelago, Antarctic Peninsula, during 1979-2018 based on Era5 data
Author(s) -
Margorie Alexandra Hernández Duarte,
Nancy Liliana Villegas Bolaños,
Ana Elena Concha Perdomo
Publication year - 2021
Publication title -
boletin de investigaciones marinas y costeras/boletín de investigaciones marinas y costeras
Language(s) - English
Resource type - Journals
eISSN - 2590-4671
pISSN - 0122-9761
DOI - 10.25268/bimc.invemar.2021.50.1.968
Subject(s) - archipelago , peninsula , oceanography , sea surface temperature , period (music) , climatology , precipitation , geography , environmental science , physical geography , geology , meteorology , physics , archaeology , acoustics
Aspatial and temporal description of meteo-marine parameters for 1979-2018 period of the marine region surrounding the Palmer Archipelago, located West of the Antarctic Peninsula (WAP), is presented. The used information was extracted from the ERA5reanalysis. Air Temperature (Ta), Total Precipitation (TP) and Sea Surface Temperature (SST) showed a general increase over the last 40 years in the study region. The highest increase of Ta, TP and SST values were recorded north of Gerlache Strait, followed byBismarck Strait. It was evidenced that Sea Ice Cover (SIC) has decreased mostly north of Palmer Archipelago. The existence of a local differentiation of meteo-marine conditions around the Palmer Archipelago was identified. The climatology of five reference points inthe region showed more visible differences during the austral winter in Ta and SIC, these were appreciated during the austral summer in SST and a bimodal behavior was recorded in Pr. The rate of change during the 1979-2018 period for Ta was 0.011 ºC/year, for Pr it was0.008 mm/year, for SST it was 0.004 ºC/year and for SIC it was -0.003 fraction/year.